.editorconfig

@@ -1,14 +0,0 @@
-# top-most EditorConfig file
-root = true
-
-# Unix-style newlines with a newline ending every file
-[*]
-end_of_line = lf
-insert_final_newline = true
-charset = utf-8
-indent_style = space
-indent_size = 4
-
-# Matches multiple files with brace expansion notation
-# Set default charset
-# [*.{js,py}]

.eslintrc.js

@@ -1,14 +1,7 @@
 module.exports = {
-    "env": {
-        "browser": true,
-        "es6": true
-    },
-    "extends": "eslint:recommended",
-    "parserOptions": {
-        "ecmaVersion": 2020,
-        "sourceType": "module"
-    },
-    "rules": {
-        "no-console": "off"
+    "extends": [
+        "matrix-org/ts",
+        "matrix-org/react",
+    ],
 }
-};
+

.gitignore

@@ -1,5 +1,31 @@
-node_modules
-build
-*.tar.gz
-/.idea
+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.js
+
+# testing
+/coverage
+
+# development
+bundle.js
+bundle.js.map
+
+# production
+/build
+
+# misc
 .DS_Store
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+.vercel
+
+storybook-static

.storybook/main.js

@@ -0,0 +1,32 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+module.exports = {
+    stories: ['../src/**/*.stories.tsx'],
+    addons: [
+        '@storybook/preset-create-react-app',
+        '@storybook/addon-actions',
+        '@storybook/addon-links',
+        '@storybook/addon-storysource',
+        '@storybook/addon-viewport/register',
+        '@storybook/addon-a11y/register',
+        '@storybook/addon-knobs/register',
+        '@storybook/addon-actions/register',
+        'storybook-addon-designs',
+        '@storybook/addon-backgrounds/register',
+    ],
+};
+

.storybook/preview.js

@@ -0,0 +1,45 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React from 'react';
+import { addDecorator } from '@storybook/react';
+import { withA11y } from '@storybook/addon-a11y';
+import { withKnobs } from '@storybook/addon-knobs';
+import { withDesign } from 'storybook-addon-designs'
+import { addParameters } from '@storybook/react';
+
+import SingleColumn from '../src/layouts/SingleColumn';
+
+// Default styles
+import "../src/index.scss";
+
+addDecorator(
+    storyFn => <SingleColumn>{storyFn()}</SingleColumn>
+);
+
+addDecorator(withA11y);
+
+addDecorator(withKnobs);
+
+addDecorator(withDesign);
+
+addParameters({
+    backgrounds: [
+        {name: 'light', value: '#F4F4F4', default: true},
+        {name: 'white', value: '#FFFFFF'},
+    ],
+});
+

CONTRIBUTING.md

@@ -1,59 +0,0 @@
-# Contributing to Matrix.to
-
-Thank you for taking the time to contribute to Matrix!
-
-This is the repository for Matrix.to, a simple url redirection service for the Matrix.org ecosystem which lets users share links to matrix entities without being tied to a specific app.
-
-## Sign off
-
-We ask that everybody who contributes to this project signs off their contributions, as explained below.
-
-We follow a simple 'inbound=outbound' model for contributions: the act of submitting an 'inbound' contribution means that the contributor agrees to license their contribution under the same terms as the project's overall 'outbound' license - in our case, this is Apache Software License v2 (see [LICENSE](./LICENSE)).
-
-In order to have a concrete record that your contribution is intentional and you agree to license it under the same terms as the project's license, we've adopted the same lightweight approach used by the [Linux Kernel](https://www.kernel.org/doc/html/latest/process/submitting-patches.html), [Docker](https://github.com/docker/docker/blob/master/CONTRIBUTING.md), and many other projects: the [Developer Certificate of Origin](https://developercertificate.org/) (DCO). This is a simple declaration that you wrote the contribution or otherwise have the right to contribute it to Matrix:
-
-```
-Developer Certificate of Origin
-Version 1.1
-
-Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
-660 York Street, Suite 102,
-San Francisco, CA 94110 USA
-
-Everyone is permitted to copy and distribute verbatim copies of this
-license document, but changing it is not allowed.
-
-Developer's Certificate of Origin 1.1
-
-By making a contribution to this project, I certify that:
-
-(a) The contribution was created in whole or in part by me and I
-    have the right to submit it under the open source license
-    indicated in the file; or
-
-(b) The contribution is based upon previous work that, to the best
-    of my knowledge, is covered under an appropriate open source
-    license and I have the right under that license to submit that
-    work with modifications, whether created in whole or in part
-    by me, under the same open source license (unless I am
-    permitted to submit under a different license), as indicated
-    in the file; or
-
-(c) The contribution was provided directly to me by some other
-    person who certified (a), (b) or (c) and I have not modified
-    it.
-
-(d) I understand and agree that this project and the contribution
-    are public and that a record of the contribution (including all
-    personal information I submit with it, including my sign-off) is
-    maintained indefinitely and may be redistributed consistent with
-    this project or the open source license(s) involved.
-```
-
-If you agree to this for your contribution, then all that's needed is to include the line in your commit or pull request comment:
-
-```
-Signed-off-by: Your Name <your@email.example.org>
-```
-
-Git allows you to add this signoff automatically when using the `-s` flag to `git commit`, which uses the name and email set in your `user.name` and `user.email` git configs.

Dockerfile

@@ -1,19 +0,0 @@
-FROM node:latest
-
-# Set working directory
-WORKDIR /app
-
-# Copy package files first to leverage Docker cache
-COPY package.json yarn.lock ./
-
-# Install dependencies
-RUN yarn install
-
-# Copy the rest of the application
-COPY . .
-
-# Expose port 5000
-EXPOSE 5000
-
-# Start the application
-CMD ["yarn", "start"]

LICENSE

@@ -1,177 +0,0 @@
-
-                                 Apache License
-                           Version 2.0, January 2004
-                        http://www.apache.org/licenses/
-
-   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
-
-   1. Definitions.
-
-      "License" shall mean the terms and conditions for use, reproduction,
-      and distribution as defined by Sections 1 through 9 of this document.
-
-      "Licensor" shall mean the copyright owner or entity authorized by
-      the copyright owner that is granting the License.
-
-      "Legal Entity" shall mean the union of the acting entity and all
-      other entities that control, are controlled by, or are under common
-      control with that entity. For the purposes of this definition,
-      "control" means (i) the power, direct or indirect, to cause the
-      direction or management of such entity, whether by contract or
-      otherwise, or (ii) ownership of fifty percent (50%) or more of the
-      outstanding shares, or (iii) beneficial ownership of such entity.
-
-      "You" (or "Your") shall mean an individual or Legal Entity
-      exercising permissions granted by this License.
-
-      "Source" form shall mean the preferred form for making modifications,
-      including but not limited to software source code, documentation
-      source, and configuration files.
-
-      "Object" form shall mean any form resulting from mechanical
-      transformation or translation of a Source form, including but
-      not limited to compiled object code, generated documentation,
-      and conversions to other media types.
-
-      "Work" shall mean the work of authorship, whether in Source or
-      Object form, made available under the License, as indicated by a
-      copyright notice that is included in or attached to the work
-      (an example is provided in the Appendix below).
-
-      "Derivative Works" shall mean any work, whether in Source or Object
-      form, that is based on (or derived from) the Work and for which the
-      editorial revisions, annotations, elaborations, or other modifications
-      represent, as a whole, an original work of authorship. For the purposes
-      of this License, Derivative Works shall not include works that remain
-      separable from, or merely link (or bind by name) to the interfaces of,
-      the Work and Derivative Works thereof.
-
-      "Contribution" shall mean any work of authorship, including
-      the original version of the Work and any modifications or additions
-      to that Work or Derivative Works thereof, that is intentionally
-      submitted to Licensor for inclusion in the Work by the copyright owner
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-      the copyright owner. For the purposes of this definition, "submitted"
-      means any form of electronic, verbal, or written communication sent
-      to the Licensor or its representatives, including but not limited to
-      communication on electronic mailing lists, source code control systems,
-      and issue tracking systems that are managed by, or on behalf of, the
-      Licensor for the purpose of discussing and improving the Work, but
-      excluding communication that is conspicuously marked or otherwise
-      designated in writing by the copyright owner as "Not a Contribution."
-
-      "Contributor" shall mean Licensor and any individual or Legal Entity
-      on behalf of whom a Contribution has been received by Licensor and
-      subsequently incorporated within the Work.
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-   2. Grant of Copyright License. Subject to the terms and conditions of
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-          notices within Derivative Works that You distribute, alongside
-          or as an addendum to the NOTICE text from the Work, provided
-          that such additional attribution notices cannot be construed
-          as modifying the License.
-
-      You may add Your own copyright statement to Your modifications and
-      may provide additional or different license terms and conditions
-      for use, reproduction, or distribution of Your modifications, or
-      for any such Derivative Works as a whole, provided Your use,
-      reproduction, and distribution of the Work otherwise complies with
-      the conditions stated in this License.
-
-   5. Submission of Contributions. Unless You explicitly state otherwise,
-      any Contribution intentionally submitted for inclusion in the Work
-      by You to the Licensor shall be under the terms and conditions of
-      this License, without any additional terms or conditions.
-      Notwithstanding the above, nothing herein shall supersede or modify
-      the terms of any separate license agreement you may have executed
-      with Licensor regarding such Contributions.
-
-   6. Trademarks. This License does not grant permission to use the trade
-      names, trademarks, service marks, or product names of the Licensor,
-      except as required for reasonable and customary use in describing the
-      origin of the Work and reproducing the content of the NOTICE file.
-
-   7. Disclaimer of Warranty. Unless required by applicable law or
-      agreed to in writing, Licensor provides the Work (and each
-      Contributor provides its Contributions) on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
-      implied, including, without limitation, any warranties or conditions
-      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
-      PARTICULAR PURPOSE. You are solely responsible for determining the
-      appropriateness of using or redistributing the Work and assume any
-      risks associated with Your exercise of permissions under this License.
-
-   8. Limitation of Liability. In no event and under no legal theory,
-      whether in tort (including negligence), contract, or otherwise,
-      unless required by applicable law (such as deliberate and grossly
-      negligent acts) or agreed to in writing, shall any Contributor be
-      liable to You for damages, including any direct, indirect, special,
-      incidental, or consequential damages of any character arising as a
-      result of this License or out of the use or inability to use the
-      Work (including but not limited to damages for loss of goodwill,
-      work stoppage, computer failure or malfunction, or any and all
-      other commercial damages or losses), even if such Contributor
-      has been advised of the possibility of such damages.
-
-   9. Accepting Warranty or Additional Liability. While redistributing
-      the Work or Derivative Works thereof, You may choose to offer,
-      and charge a fee for, acceptance of support, warranty, indemnity,
-      or other liability obligations and/or rights consistent with this
-      License. However, in accepting such obligations, You may act only
-      on Your own behalf and on Your sole responsibility, not on behalf
-      of any other Contributor, and only if You agree to indemnify,
-      defend, and hold each Contributor harmless for any liability
-      incurred by, or claims asserted against, such Contributor by reason
-      of your accepting any such warranty or additional liability.
-
-   END OF TERMS AND CONDITIONS

README.md

@@ -1,54 +1,10 @@
-# dm.sij.law
-This repo is cloned from the official Matrix.to repo on Github. I've added a Dockerfile and will make modifications in the future. The current version is live at [dm.sij.law](https://dm.sij.law)
-
-## First clone the repo
-```bash
-git clone https://sij.ai/sij/env.esq.git
-```
-
-## Next build the image
-```bash
-docker build -t matrix-to .
-```
-
-## Then run it
-```bash
-docker run -d \
-  --name matrix-to \
-  -p 3636:5000 \
-  matrix-to
-```
-
-# EVERYTHING BELOW HERE IS ORIGINAL DOCUMENTATION
-
-## Matrix.to
+# Matrix.to
 
 Matrix.to is a simple url redirection service for the Matrix.org ecosystem
 which lets users share links to matrix entities without being tied to a
 specific app.
 Stylistically it serves as a landing page for rooms and communities.
 
-## How can I put a badge on my website linking to my matrix room?
-
-You can use the badge image we've put up at https://matrix.to/img/matrix-badge.svg, and use it in a link like this:
-
-[![Chat on Matrix](https://matrix.to/img/matrix-badge.svg)](https://matrix.to/#/#matrix.to:matrix.org)
-
-You can use this Markdown:
-```md
-[![Chat on Matrix](https://matrix.to/img/matrix-badge.svg)](https://matrix.to/#/#matrix.to:matrix.org)
-```
-
-Or this HTML:
-
-```html
-<a href="https://matrix.to/#/#matrix.to:matrix.org" rel="noopener" target="_blank"><img src="https://matrix.to/img/matrix-badge.svg" alt="Chat on Matrix"></a>
-```
-
-to show the badge.
-
-## How does matrix.to work?
-
 Matrix.to preserves user privacy by not sharing any information about the links
 being followed with the Matrix.to server - the redirection is calculated
 entirely clientside using JavaScript, and the link details is hidden behind a
@@ -65,8 +21,6 @@ point at an alternative deployment of the service.  The Matrix.to service could
 also be hosted in an immutable/signed environment such as IPFS to further
 increase its availability and avoid tampering.
 
-## URL Scheme
-
 The matrix.to URL scheme is
 
 | Entity type: | Example URL                                                       |
@@ -86,23 +40,10 @@ visitors.
 (Technically the # and @ in the URL fragment should probably be escaped, but in
 practice for legibility we bend the rules and include it verbatim)
 
-### Optional parameters
-
-https://matrix.to/#/#matrix:matrix.org?web-instance[element.io]=chat.mozilla.org
-
-- `client`, e.g. `client=im.fluffychat`, `client=element.io`
-- `web-instance[]`, e.g. `web-instance[element.io]=chat.mozilla.org`.
-    - For [matrix.to](https://matrix.to/), we have a list of [trusted web instances configured](src/open/clients/Element.js) (see `trustedWebInstances`).
--  `via`, e.g. `via=mozilla.org`
-
 You can discuss matrix.to in
 [`#matrix.to:matrix.org`](https://matrix.to/#/#matrix.to:matrix.org)
 
-## Build Instructions
+A development build of matrix-two can be found at https://matrix-to.vercel.app
 
-1. Install [yarn](https://classic.yarnpkg.com/en/docs/install)
-1. `git clone https://github.com/matrix-org/matrix.to`
-1. `cd matrix.to`
-1. `yarn`
-1. `yarn start`
-1. Go to http://localhost:5000 in your browser
+A preview of all components can be found at
+https://matrix-to-storybook.vercel.app

css/client.css

@@ -1,98 +0,0 @@
-.ClientListView h2 {
-    text-align: center;
-    margin: 18px 0;
-}
-
-.ClientListView .filterOption {
-    display: flex;
-    align-items: center;
-    margin: 8px 0;
-}
-
-.ClientView {
-    border: 1px solid #E6E6E6;
-    border-radius: 8px;
-    margin: 16px 0;
-    padding: 16px;
-}
-
-.ClientView.isPreferred {
-    border: 3px solid var(--link);
-    box-shadow: 0px 8px 4px rgba(0, 0, 0, 0.05);
-}
-
-.ClientView .hostedBanner {
-    text-align: center;
-    margin-bottom: 29px;
-    padding: 4px 0;
-    line-height: 20px;
-    border-radius: 8px;
-    font-weight: bold;
-    font-size: 16px;
-    background-color: var(--lightgrey);
-}
-
-.ClientView .header {
-    display: flex;
-}
-
-.ClientView .description {
-    flex: 1;
-}
-
-.ClientView h3 {
-    margin-top: 0;
-}
-
-.ClientView .clientIcon {
-    border-radius: 8px;
-    background-repeat: no-repeat;
-    background-size: cover;
-    width: 60px;
-    height: 60px;
-    overflow: hidden;
-    display: block;
-    margin-left: 16px;
-}
-
-.ClientView .platforms {
-    background-image: url('../images/platform-icon.svg');
-    background-repeat: no-repeat;
-    background-position: 0 center;
-    padding-left: 28px;
-}
-
-.ClientView .actions a.badge {
-    display: inline-block;
-    height: 40px;
-    margin: 8px 16px 8px 0;
-}
-
-.ClientView .actions img {
-    height: 100%;
-}
-
-.ClientView .back {
-    margin-top: 22px;
-}
-
-.InstallClientView .instructions button {
-    background-repeat: no-repeat;
-    background-position: center;
-    background-color: transparent;
-    padding: 4px;
-    border: none;
-    width: 24px;
-    height: 24px;
-    margin: 8px;
-    vertical-align: middle;
-}
-
-.InstallClientView .instructions button.copy {
-    background-image: url('../images/copy.svg');
-}
-
-.InstallClientView .instructions button.tick {
-    background-image: url('../images/tick-dark.svg');
-}
-

css/create.css

@@ -1,13 +0,0 @@
-.CreateLinkView h2 {
-    padding: 0 40px;
-    word-break: break-all;
-    text-align: center;
-}
-
-.CreateLinkView form {
-    margin-top: 36px;
-}
-
-.CreateLinkView form > *:not(:first-child) {
-    margin-top: 24px;
-}

css/main.css

@@ -1,223 +0,0 @@
-/*
-Copyright 2020 The Matrix.org Foundation C.I.C.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-@import url('spinner.css');
-@import url('client.css');
-@import url('preview.css');
-@import url('create.css');
-@import url('open.css');
-
-:root {
-    --app-background: #f4f4f4;
-    --background: #ffffff;
-    --foreground: #000000;
-    --font: #333333;
-    --grey: #666666;
-    --accent: #0098d4;
-    --error: #d6001c;
-    --link: #0098d4;
-    --borders: #f4f4f4;
-    --lightgrey: #E6E6E6;
-    --spinner-stroke-size: 2px;
-}
-
-html {
-    margin: 0;
-    padding: 0;
-}
-
-body {
-    background-color: var(--app-background);
-    background-image: url('../images/background.svg');
-    background-attachment: fixed;
-    background-repeat: no-repeat;
-    background-size: auto;
-    background-position: center -50px;
-    height: 100%;
-    width: 100%;
-    font-size: 14px;
-    color: var(--font);
-    padding: 120px 0 0 0;
-    margin: 0;
-}
-
-noscript {
-    display: block;
-    padding: 20px;
-}
-
-p { line-height: 150%; }
-a { text-decoration: none; }
-
-h1 { font-size: 24px; }
-h2 { font-size: 21px; }
-h3 { font-size: 16px; }
-
-body,
-button,
-input,
-textarea {
-    font-family: Helvetica Neue, Helvetica, Arial, sans-serif;
-    font-style: normal;
-}
-
-button, input[type=submit] {
-    cursor: pointer;
-}
-
-button, input {
-    font-size: inherit;
-    font-weight: inherit;
-}
-
-input[type="checkbox"], input[type="radio"] {
-    margin: 0 8px 0 0;
-}
-
-.RootView {
-    margin: 0 auto;
-    max-width: 480px;
-    width: 100%;
-}
-
-.card {
-    background-color: var(--background);
-    border-radius: 16px;
-    box-shadow: 0px 18px 24px rgba(0, 0, 0, 0.06);
-}
-
-.card, .footer {
-    padding: 2rem;
-}
-
-.hidden {
-    display: none !important;
-}
-
-
-@media screen and (max-width: 480px) {
-    body {
-        background-image: none;
-        background-color: var(--background);
-        padding: 0;
-    }
-
-    .card {
-        border-radius: unset;
-        box-shadow: unset;
-    }
-}
-
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css/open.css

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-/*
-Copyright 2020 The Matrix.org Foundation C.I.C.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
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-    http://www.apache.org/licenses/LICENSE-2.0
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-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
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-.OpenLinkView .caption {
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-    border-bottom: 1px solid var(--grey);
-    padding: 4px 0;
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css/preview.css

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css/spinner.css

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docker-compose.yaml

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-version: '3'
-services:
-  matrix-to:
-    build: .
-    ports:
-      - "3636:5000"

images-nohash/matrix-badge.svg

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images/client-icons/cinny.svg

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images/client-icons/element.svg

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images/client-icons/fluffychat.svg

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-</svg>

images/platform-icon.svg

@@ -1 +0,0 @@
-<svg width="22" height="22" fill="none" xmlns="http://www.w3.org/2000/svg"><path d="M13.358 14.752H4.97a1.048 1.048 0 01-1.047-1.048V6.286c0-.579.469-1.048 1.047-1.048H17.08c.579 0 1.048.47 1.048 1.048v1.33M11.424 15.152v1.21M9.304 16.362h3.653" stroke="#666" stroke-width=".8" stroke-linecap="round" stroke-linejoin="round"/><rect x="14.543" y="8.955" width="3.914" height="7.371" rx=".648" stroke="#666" stroke-width=".8"/><path stroke="#666" stroke-width=".8" d="M16.028 15.174h1.048"/></svg>

images/tick-dark.svg

@@ -1,3 +0,0 @@
-<svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
-<path d="M5.5 12.5L8.84497 15.845C9.71398 16.714 11.1538 16.601 11.8767 15.6071L18.5 6.5" stroke="#333" stroke-width="2" stroke-linecap="round"/>
-</svg>

index.html

@@ -1,26 +0,0 @@
-<!DOCTYPE html>
-<html>
-<head>
-    <meta charset="utf-8">
-    <title>You're invited to talk on Matrix</title>
-    <meta name="description" content="You're invited to talk on Matrix">
-    <meta name="viewport" content="width=device-width, user-scalable=no">
-    <link rel="stylesheet" type="text/css" href="css/main.css">
-    <meta property="twitter:card" content="summary"/>
-    <meta property="twitter:image" content="https://matrix.org/blog/img/matrix-logo.png"/>
-	<meta property="twitter:site" content="@matrixdotorg"/>
-	<meta property="twitter:title" content="Matrix - Decentralised and secure communication"/>
-	<meta property="twitter:description" content="You're invited to talk on Matrix. If you don't already have a client this link will help you pick one, and join the conversation. If you already have one, this link will help you join the conversation"/>
-</head>
-<body>
-    <script id="main" type="module">
-        import {main} from "./src/main.js";
-        main(document.body);
-    </script>
-    <noscript>
-        <h1>Please enable javascript</h1>
-        <p>Matrix.to is a preview service from chat rooms, people and communities on <a href="https://matrix.org">Matrix</a>.</p>
-        <p>It preserves your privacy by only processing what you view on the client side. For this to work, it needs javascript.</p>
-    </noscript>
-</body>
-</html>

jest.config.js

@@ -0,0 +1,4 @@
+module.exports = {
+  preset: 'ts-jest',
+  testEnvironment: 'node',
+};

package.json

@@ -1,37 +1,81 @@
 {
     "name": "matrix.to",
-  "version": "1.2.17",
-  "type": "module",
-  "license": "Apache-2.0",
-  "engines": {
-    "node": ">= 14.0.0"
+    "version": "0.1.0",
+    "private": true,
+    "dependencies": {
+        "@quentin-sommer/react-useragent": "^3.1.0",
+        "classnames": "^2.2.6",
+        "cross-fetch": "^3.0.6",
+        "formik": "^2.1.4",
+        "promise.any": "^2.0.1",
+        "react": "^16.13.1",
+        "react-dom": "^16.13.1",
+        "react-scripts": "3.4.1",
+        "zod": "^1.10.3"
     },
     "scripts": {
-    "start": "node scripts/serve-local.js",
-    "build": "node scripts/build.js"
+        "start": "react-scripts start",
+        "build": "react-scripts build",
+        "test": "react-scripts test",
+        "eject": "react-scripts eject",
+        "lint:fix": "eslint src/**/*.ts src/**/*.tsx --fix",
+        "storybook": "start-storybook -p 9009 -s public",
+        "build-storybook": "build-storybook -s public"
+    },
+    "lint-staged": {
+        "src/**/*.{js,jsx,ts,tsx}": [
+            "eslint --fix",
+            "prettier --write --tab-width 4 --single-quote"
+        ],
+        "src/**/*.{json,css,scss,md}": [
+            "prettier --write --tab-width 4 --single-quote"
+        ]
+    },
+    "husky": {
+        "hooks": {
+            "pre-commit": "lint-staged"
+        }
+    },
+    "browserslist": {
+        "production": [
+            ">0.2%",
+            "not dead",
+            "not op_mini all"
+        ],
+        "development": [
+            "last 1 chrome version",
+            "last 1 firefox version",
+            "last 1 safari version"
+        ]
     },
     "devDependencies": {
-    "@babel/core": "^7.11.1",
-    "@babel/preset-env": "^7.11.0",
-    "@rollup/plugin-babel": "^5.1.0",
-    "@rollup/plugin-commonjs": "^15.0.0",
-    "@rollup/plugin-multi-entry": "^4.0.0",
-    "@rollup/plugin-node-resolve": "^9.0.0",
-    "@rollup/plugin-replace": "^2.3.4",
-    "autoprefixer": "^10.0.1",
-    "cheerio": "^1.0.0-rc.3",
-    "core-js": "^3.6.5",
-    "finalhandler": "^1.1.2",
-    "mdn-polyfills": "^5.20.0",
-    "postcss": "^8.4.31",
-    "postcss-css-variables": "^0.17.0",
-    "postcss-flexbugs-fixes": "^4.2.1",
-    "postcss-import": "^12.0.1",
-    "postcss-url": "^8.0.0",
-    "regenerator-runtime": "^0.13.7",
-    "rollup": "^2.26.4",
-    "rollup-plugin-terser": "^7.0.2",
-    "serve-static": "^1.14.1",
-    "xxhashjs": "^0.2.2"
+        "@storybook/addon-a11y": "^5.3.19",
+        "@storybook/addon-actions": "^5.3.19",
+        "@storybook/addon-backgrounds": "^5.3.19",
+        "@storybook/addon-knobs": "^5.3.19",
+        "@storybook/addon-links": "^5.3.19",
+        "@storybook/addon-storysource": "^5.3.19",
+        "@storybook/addon-viewport": "^5.3.19",
+        "@storybook/addons": "^5.3.19",
+        "@storybook/preset-create-react-app": "^3.1.4",
+        "@storybook/react": "^5.3.19",
+        "@testing-library/jest-dom": "^4.2.4",
+        "@testing-library/react": "^9.3.2",
+        "@testing-library/user-event": "^7.1.2",
+        "@types/classnames": "^2.2.10",
+        "@types/jest": "^24.0.0",
+        "@types/lodash": "^4.14.159",
+        "@types/node": "^12.0.0",
+        "@types/react": "^16.9.0",
+        "@types/react-dom": "^16.9.0",
+        "@types/yup": "^0.29.3",
+        "eslint-config-matrix-org": "^0.1.0",
+        "husky": "^4.2.5",
+        "lint-staged": "^10.2.7",
+        "node-sass": "^4.14.1",
+        "prettier": "^2.0.5",
+        "storybook-addon-designs": "^5.4.0",
+        "ts-jest": "^26.1.4",
+        "typescript": "~3.7.2"
     }
 }

public/index.html

@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <meta
+      name="description"
+      content="A client-side matrix link redirection service"
+    />
+    <title>Matrix.to</title>
+  </head>
+  <body>
+    <noscript>You need to enable JavaScript to run this app.</noscript>
+    <div id="root"></div>
+  </body>
+</html>

scripts/build.js

@@ -1,307 +0,0 @@
-/*
-Copyright 2020 Bruno Windels <bruno@windels.cloud>
-Copyright 2020 The Matrix.org Foundation C.I.C.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-import cheerio from "cheerio";
-import fs from "fs/promises";
-import path from "path";
-import xxhash from 'xxhashjs';
-import { rollup } from 'rollup';
-import postcss from "postcss";
-import postcssImport from "postcss-import";
-// needed for legacy bundle
-import babel from '@rollup/plugin-babel';
-// needed to find the polyfill modules in the main-legacy.js bundle
-import { nodeResolve } from '@rollup/plugin-node-resolve';
-// needed because some of the polyfills are written as commonjs modules
-import commonjs from '@rollup/plugin-commonjs';
-// multi-entry plugin so we can add polyfill file to main
-import multi from '@rollup/plugin-multi-entry';
-import { terser } from "rollup-plugin-terser";
-import replace from "@rollup/plugin-replace";
-// replace urls of asset names with content hashed version
-import postcssUrl from "postcss-url";
-import cssvariables from "postcss-css-variables";
-import autoprefixer from "autoprefixer";
-import flexbugsFixes from "postcss-flexbugs-fixes";
-
-import {createClients} from "../src/open/clients/index.js";
-
-import { fileURLToPath } from 'url';
-import { dirname } from 'path';
-const projectDir = path.join(dirname(fileURLToPath(import.meta.url)), "../");
-
-async function build() {
-    // get version number
-    const version = JSON.parse(await fs.readFile(path.join(projectDir, "package.json"), "utf8")).version;
-    // clear target dir
-    const targetDir = path.join(projectDir, "build/");
-    await removeDirIfExists(targetDir);
-    await fs.mkdir(targetDir);
-    await fs.mkdir(path.join(targetDir, "images"));
-    await fs.mkdir(path.join(targetDir, "img")); // contains the badge image for historical reasons, unhashed
-    await fs.mkdir(path.join(targetDir, ".well-known"));
-    const assets = new AssetMap(targetDir);
-    const imageAssets = await copyFolder(path.join(projectDir, "images"), path.join(targetDir, "images"));
-    assets.addSubMap(imageAssets);
-    await assets.write(`bundle.js`, await buildJs("src/main.js", assets, ["src/polyfill.js"]));
-    await assets.write(`bundle.css`, await buildCss("css/main.css", targetDir, assets));
-    await assets.writeUnhashed(".well-known/apple-app-site-association", buildAppleAssociatedAppsFile(createClients()));
-    await assets.writeUnhashed("index.html", await buildHtml(assets));
-    await assets.writeUnhashed("img/matrix-badge.svg", await fs.readFile(path.join(projectDir, "images-nohash/matrix-badge.svg")));
-    const globalHash = assets.hashForAll();
-    console.log(`built matrix.to ${version} (${globalHash}) successfully with ${assets.size} files`);
-}
-
-async function buildHtml(assets) {
-    const devHtml = await fs.readFile(path.join(projectDir, "index.html"), "utf8");
-    const doc = cheerio.load(devHtml);
-    doc("link[rel=stylesheet]").attr("href", assets.resolve(`bundle.css`));
-    const mainScripts = [
-        // this is needed to avoid hitting https://github.com/facebook/regenerator/issues/378
-        // which prevents the whole bundle to load, as our CSP headers don't allow unsafe-eval
-        // and I preferred this over disabling strict mode for the whole bundle
-        `<script type="text/javascript">window.regeneratorRuntime = undefined;</script>`,
-        `<script type="text/javascript" src="${assets.resolve(`bundle.js`)}"></script>`,
-        `<script type="text/javascript">bundle.main(document.body);</script>`
-    ];
-    doc("script#main").replaceWith(mainScripts.join(""));
-    return doc.html();
-}
-
-function createReplaceUrlPlugin(assets) {
-    const replacements = {};
-    for (const [key, value] of assets) {
-        replacements[key] = value;
-    }
-    return replace(replacements);
-}
-
-async function buildJs(mainFile, assets, extraFiles = []) {
-    // compile down to whatever IE 11 needs
-    const babelPlugin = babel.babel({
-        babelHelpers: 'bundled',
-        exclude: 'node_modules/**',
-        presets: [
-            [
-                "@babel/preset-env",
-                {
-                    useBuiltIns: "entry",
-                    corejs: "3",
-                    targets: "IE 11",
-                }
-            ]
-        ]
-    });
-    // create js bundle
-    const rollupConfig = {
-        // important the extraFiles come first,
-        // so polyfills are available in the global scope
-        // if needed for the mainfile
-        input: extraFiles.concat(mainFile),
-        plugins: [multi(), commonjs(), nodeResolve(), createReplaceUrlPlugin(assets), babelPlugin, terser()]
-    };
-    const bundle = await rollup(rollupConfig);
-    const {output} = await bundle.generate({
-        format: 'iife',
-        name: `bundle`
-    });
-    const code = output[0].code;
-    return code;
-}
-
-function buildAppleAssociatedAppsFile(clients) {
-    const appIds = clients.map(c => c.appleAssociatedAppId).flat().filter(id => !!id);
-    return JSON.stringify({
-        "applinks": {
-            "details": [
-                {
-                    appIDs: appIds,
-                    components: [
-                        {
-                            "#": "/*",
-                            "comment": "Only open urls with a fragment, so you can still create links"
-                        }
-                    ]
-                }
-            ]
-        }
-    });
-}
-
-async function buildCss(entryPath, targetDir, assets) {
-    entryPath = path.join(projectDir, entryPath);
-    const assetUrlMapper = ({absolutePath}) => {
-        const relPath = absolutePath.slice(projectDir.length);
-        return assets.resolve(path.join(targetDir, relPath));
-    };
-
-    const preCss = await fs.readFile(entryPath, "utf8");
-    const options = [
-        postcssImport,
-        cssvariables(),
-        autoprefixer({overrideBrowserslist: ["IE 11"], grid: "no-autoplace"}),
-        flexbugsFixes(),
-        postcssUrl({url: assetUrlMapper}),
-    ];
-    const cssBundler = postcss(options);
-    const result = await cssBundler.process(preCss, {from: entryPath});
-    return result.css;
-}
-
-async function removeDirIfExists(targetDir) {
-    try {
-        await fs.rmdir(targetDir, {recursive: true});
-    } catch (err) {
-        if (err.code !== "ENOENT") {
-            throw err;
-        }
-    }
-}
-
-async function copyFolder(srcRoot, dstRoot, filter = null, assets = null) {
-    assets = assets || new AssetMap(dstRoot);
-    const dirEnts = await fs.readdir(srcRoot, {withFileTypes: true});
-    for (const dirEnt of dirEnts) {
-        const dstPath = path.join(dstRoot, dirEnt.name);
-        const srcPath = path.join(srcRoot, dirEnt.name);
-        if (dirEnt.isDirectory()) {
-            await fs.mkdir(dstPath);
-            await copyFolder(srcPath, dstPath, filter, assets);
-        } else if ((dirEnt.isFile() || dirEnt.isSymbolicLink()) && (!filter || filter(srcPath))) {
-            const content = await fs.readFile(srcPath);
-            await assets.write(dstPath, content);
-        }
-    }
-    return assets;
-}
-
-function contentHash(str) {
-    var hasher = new xxhash.h32(0);
-    hasher.update(str);
-    return hasher.digest();
-}
-
-class AssetMap {
-    constructor(targetDir) {
-        // remove last / if any, so substr in create works well
-        this._targetDir = path.resolve(targetDir);
-        this._assets = new Map();
-        // hashes for unhashed resources so changes in these resources also contribute to the hashForAll
-        this._unhashedHashes = [];
-    }
-
-    _toRelPath(resourcePath) {
-        let relPath = resourcePath;
-        if (path.isAbsolute(resourcePath)) {
-            if (!resourcePath.startsWith(this._targetDir)) {
-                throw new Error(`absolute path ${resourcePath} that is not within target dir ${this._targetDir}`);
-            }
-            relPath = resourcePath.slice(this._targetDir.length + 1); // + 1 for the /
-        }
-        return relPath;
-    }
-
-    _create(resourcePath, content) {
-        const relPath = this._toRelPath(resourcePath);
-        const hash = contentHash(Buffer.from(content));
-        const dir = path.dirname(relPath);
-        const extname = path.extname(relPath);
-        const basename = path.basename(relPath, extname);
-        const dstRelPath = path.join(dir, `${basename}-${hash}${extname}`);
-        this._assets.set(relPath, dstRelPath);
-        return dstRelPath;
-    }
-
-    async write(resourcePath, content) {
-        const relPath = this._create(resourcePath, content);
-        const fullPath = path.join(this.directory, relPath);
-        if (typeof content === "string") {
-            await fs.writeFile(fullPath, content, "utf8");
-        } else {
-            await fs.writeFile(fullPath, content);
-        }
-        return relPath;
-    }
-
-    async writeUnhashed(resourcePath, content) {
-        const relPath = this._toRelPath(resourcePath);
-        this._assets.set(relPath, relPath);
-        const fullPath = path.join(this.directory, relPath);
-        if (typeof content === "string") {
-            await fs.writeFile(fullPath, content, "utf8");
-        } else {
-            await fs.writeFile(fullPath, content);
-        }
-        return relPath;
-    }
-
-    get directory() {
-        return this._targetDir;
-    }
-
-    resolve(resourcePath) {
-        const relPath = this._toRelPath(resourcePath);
-        const result = this._assets.get(relPath);
-        if (!result) {
-            throw new Error(`unknown path: ${relPath}, only know ${Array.from(this._assets.keys()).join(", ")}`);
-        }
-        return result;
-    }
-
-    addSubMap(assetMap) {
-        if (!assetMap.directory.startsWith(this.directory)) {
-            throw new Error(`map directory doesn't start with this directory: ${assetMap.directory} ${this.directory}`);
-        }
-        const relSubRoot = assetMap.directory.slice(this.directory.length + 1);
-        for (const [key, value] of assetMap._assets.entries()) {
-            this._assets.set(path.join(relSubRoot, key), path.join(relSubRoot, value));
-        }
-    }
-
-    [Symbol.iterator]() {
-        return this._assets.entries();
-    }
-
-    isUnhashed(relPath) {
-        const resolvedPath = this._assets.get(relPath);
-        if (!resolvedPath) {
-            throw new Error("Unknown asset: " + relPath);
-        }
-        return relPath === resolvedPath;
-    }
-
-    get size() {
-        return this._assets.size;
-    }
-
-    has(relPath) {
-        return this._assets.has(relPath);
-    }
-
-    hashForAll() {
-        const globalHashAssets = Array.from(this).map(([, resolved]) => resolved);
-        globalHashAssets.push(...this._unhashedHashes);
-        globalHashAssets.sort();
-        return contentHash(globalHashAssets.join(","));
-    }
-
-    addToHashForAll(resourcePath, content) {
-        this._unhashedHashes.push(`${resourcePath}-${contentHash(Buffer.from(content))}`);
-    }
-}
-
-build().catch(err => console.error(err));

scripts/package.sh

@@ -1,8 +0,0 @@
-set -e
-VERSION=$(jq -r ".version" package.json)
-PACKAGE=matrixto-$VERSION.tar.gz
-yarn build
-pushd build
-tar -czvf ../$PACKAGE ./
-popd
-echo $PACKAGE

scripts/serve-local.js

@@ -1,48 +0,0 @@
-/*
-Copyright 2020 Bruno Windels <bruno@windels.cloud>
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-import finalhandler from "finalhandler"
-import http from "http"
-import serveStatic from "serve-static"
-import path from "path"
-import { fileURLToPath } from "url";
-const projectDir = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "../");
-
-// Serve up parent directory with cache disabled
-const serve = serveStatic(
-    projectDir,
-    {
-        etag: false,
-        setHeaders: res => {
-            res.setHeader("Pragma", "no-cache");
-            res.setHeader("Cache-Control", "no-cache, no-store, must-revalidate");
-            res.setHeader("Expires", "Wed, 21 Oct 2015 07:28:00 GMT");
-            // same CSP as matrix.to server is using, so local testing happens under similar environment
-            res.setHeader("Content-Security-Policy", "default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval'; style-src 'self' 'unsafe-inline'; img-src * data:; connect-src *; font-src 'self'; manifest-src 'self'; form-action 'self'; navigate-to *;");
-        },
-        index: ['index.html', 'index.htm']
-    }
-);
- 
-// Create server
-const server = http.createServer(function onRequest (req, res) {
-    console.log(req.method, req.url);
-    serve(req, res, finalhandler(req, res))
-});
-
-// Listen
-server.listen(5000);
-console.log("Listening on port 5000");

src/App.scss

@@ -0,0 +1,42 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+@import './color-scheme';
+
+#root {
+    background-color: $app-background;
+    background-image: url('./imgs/background.svg');
+    background-repeat: no-repeat;
+    background-size: cover;
+}
+
+@mixin spacer {
+    width: 100%;
+    flex-grow: 0;
+    flex-shrink: 0;
+}
+
+.topSpacer {
+    @include spacer;
+
+    height: 10vh;
+}
+
+.bottomSpacer {
+    @include spacer;
+
+    height: 10vh;
+}

src/App.tsx

@@ -0,0 +1,81 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React, { useState, useEffect } from 'react';
+
+import SingleColumn from './layouts/SingleColumn';
+import CreateLinkTile from './components/CreateLinkTile';
+import MatrixTile from './components/MatrixTile';
+import Tile from './components/Tile';
+import LinkRouter from './pages/LinkRouter';
+import Footer from './components/Footer';
+
+import './App.scss';
+
+import GlobalContext from './contexts/GlobalContext';
+
+/* eslint-disable no-restricted-globals */
+
+const App: React.FC = () => {
+    let page = (
+        <>
+            <CreateLinkTile />
+        </>
+    );
+
+    const [hash, setHash] = useState(location.hash);
+
+    console.log(`Link for ${hash}`);
+
+    useEffect(() => {
+        // Some hacky uri decoding
+        if (location.href.split('/').length > 4) {
+            location.href = decodeURIComponent(location.href);
+        }
+
+        window.onhashchange = () => setHash(location.hash);
+    }, []);
+
+    if (hash) {
+        if (hash.startsWith('#/')) {
+            page = <LinkRouter link={hash.slice(2)} />;
+        } else {
+            page = (
+                <Tile>
+                    Links should be in the format {location.host}/#/{'<'}
+                    matrix-resource-identifier{'>'}
+                </Tile>
+            );
+        }
+    }
+
+    return (
+        <GlobalContext>
+            <SingleColumn>
+                <div className="topSpacer" />
+                {page}
+                <div>
+                    <MatrixTile isLink={!!location.hash} />
+                    <br />
+                    <Footer />
+                </div>
+                <div className="bottomSpacer" />
+            </SingleColumn>
+        </GlobalContext>
+    );
+};
+
+export default App;

src/InvalidUrlView.js

@@ -1,56 +0,0 @@
-/*
-Copyright 2021 The Matrix.org Foundation C.I.C.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-import {TemplateView} from "./utils/TemplateView.js";
-import {LinkKind, IdentifierKind} from "./Link.js";
-
-export class InvalidUrlView extends TemplateView {
-    render(t, vm) {
-        return t.div({ className: "DisclaimerView card" }, [
-            t.h1("Invalid URL"),
-            t.p([
-                'The link you have entered is not valid. If you like, you can ',
-                t.a({ href: "#/" }, 'return to the home page.')
-            ]),
-            vm.validFixes.length ? this._renderValidFixes(t, vm.validFixes) : [],
-        ]);
-    }
-
-    _describeRoom(identifierKind) {
-        return identifierKind === IdentifierKind.RoomAlias ? "room alias" : "room";
-    }
-
-    _describeLinkKind(linkKind, identifierKind) {
-        switch (linkKind) {
-            case LinkKind.Room: return `The ${this._describeRoom(identifierKind)} `;
-            case LinkKind.User: return "The user ";
-            case LinkKind.Group: return "The group ";
-            case LinkKind.Event: return `An event in ${this._describeRoom(identifierKind)} `;
-        }
-    }
-
-    _renderValidFixes(t, validFixes) {
-        return t.p([
-            'Did you mean any of the following?',
-            t.ul(validFixes.map(fix =>
-                t.li([
-                    this._describeLinkKind(fix.link.kind, fix.link.identifierKind),
-                    t.a({ href: fix.url }, fix.link.identifier)
-                ])
-            ))
-        ]);
-    }
-}

src/Link.js

@@ -1,212 +0,0 @@
-/*
-Copyright 2020 The Matrix.org Foundation C.I.C.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-import {createEnum} from "./utils/enum.js";
-import {orderedUnique} from "./utils/unique.js";
-
-const ROOMALIAS_PATTERN = /^#([^:]*):(.+)$/;
-const ROOMID_PATTERN = /^!([^:]*):(.+)$/;
-const USERID_PATTERN = /^@([^:]+):(.+)$/;
-const EVENTID_PATTERN = /^$([^:]+):(.+)$/;
-const GROUPID_PATTERN = /^\+([^:]+):(.+)$/;
-
-export const IdentifierKind = createEnum(
-    "RoomId",
-    "RoomAlias",
-    "UserId",
-    "GroupId",
-);
-
-function asPrefix(identifierKind) {
-    switch (identifierKind) {
-        case IdentifierKind.RoomId: return "!";
-        case IdentifierKind.RoomAlias: return "#";
-        case IdentifierKind.GroupId: return "+";
-        case IdentifierKind.UserId: return "@";
-        default: throw new Error("invalid id kind " + identifierKind);
-    }
-}
-
-function getWebInstanceMap(queryParams) {
-    const prefix = "web-instance[";
-    const postfix = "]";
-    const webInstanceParams = queryParams.filter(([key]) => key.startsWith(prefix) && key.endsWith(postfix));
-    const webInstances = webInstanceParams.map(([key, value]) => {
-        const noPrefix = key.slice(prefix.length);
-        const clientId = noPrefix.slice(0, -postfix.length);
-        return [clientId, value];
-    });
-    return webInstances.reduce((map, [clientId, host]) => {
-        map[clientId] = host;
-        return map;
-    }, {});
-}
-
-export function getLabelForLinkKind(kind) {
-    switch (kind) {
-        case LinkKind.User: return "Start chat";
-        case LinkKind.Room: return "View room";
-        case LinkKind.Group: return "View community";
-        case LinkKind.Event: return "View message";
-    }
-}
-
-export const LinkKind = createEnum(
-    "Room",
-    "User",
-    "Group",
-    "Event"
-)
-
-export function tryFixUrl(fragment) {
-    const attempts = [];
-    const afterHash = fragment.substring(fragment.startsWith("#/") ? 2 : 1);
-    attempts.push('#/@' + afterHash);
-    attempts.push('#/#' + afterHash);
-    attempts.push('#/!' + afterHash);
-
-    const validAttempts = [];
-    for (const attempt of [...new Set(attempts)]) {
-        const link = Link.parseFragment(attempt);
-        if (link) {
-            validAttempts.push({ url: attempt, link });
-        }
-    }
-    return validAttempts;
-}
-
-export class Link {
-    static validateIdentifier(identifier) {
-        return !!(
-            USERID_PATTERN.exec(identifier) ||
-            ROOMALIAS_PATTERN.exec(identifier) || 
-            ROOMID_PATTERN.exec(identifier) ||
-            GROUPID_PATTERN.exec(identifier)
-        );
-    }
-
-    static parseIdentifier(identifier) {
-        return Link._parse(identifier);
-    }
-
-    static parseFragment(fragment) {
-        if (!fragment) {
-            return null;
-        }
-        let [linkStr, queryParamsStr] = fragment.split("?");
-        if (!linkStr.startsWith("#/")) {
-            return null;
-        }
-        linkStr = linkStr.slice(2);
-        const [identifier, eventId] = linkStr.split("/");
-
-        let viaServers = [];
-        let clientId = null;
-        let webInstances = {};
-        if (queryParamsStr) {
-            const queryParams = queryParamsStr.split("&").map(pair => {
-                const [key, value] = pair.split("=");
-                return [decodeURIComponent(key), decodeURIComponent(value)];
-            });
-            viaServers = queryParams
-                .filter(([key, value]) => key === "via")
-                .map(([,value]) => value);
-            const clientParam = queryParams.find(([key]) => key === "client");
-            if (clientParam) {
-                clientId = clientParam[1];
-            }
-            webInstances = getWebInstanceMap(queryParams);
-        }
-        return Link._parse(identifier, eventId, clientId, viaServers, webInstances);
-    }
-
-    static _parse(identifier, eventId = undefined, clientId = null, viaServers = [], webInstances = {}) {
-        if (!identifier) {
-            return null;
-        }
-        let matches;
-        matches = USERID_PATTERN.exec(identifier);
-        if (matches) {
-            const server = matches[2];
-            const localPart = matches[1];
-            return new Link(clientId, viaServers, IdentifierKind.UserId, localPart, server, webInstances);
-        }
-        matches = ROOMALIAS_PATTERN.exec(identifier);
-        if (matches) {
-            const server = matches[2];
-            const localPart = matches[1];
-            return new Link(clientId, viaServers, IdentifierKind.RoomAlias, localPart, server, webInstances, eventId);
-        }
-        matches = ROOMID_PATTERN.exec(identifier);
-        if (matches) {
-            const server = matches[2];
-            const localPart = matches[1];
-            return new Link(clientId, viaServers, IdentifierKind.RoomId, localPart, server, webInstances, eventId);
-        }
-        matches = GROUPID_PATTERN.exec(identifier);
-        if (matches) {
-            const server = matches[2];
-            const localPart = matches[1];
-            return new Link(clientId, viaServers, IdentifierKind.GroupId, localPart, server, webInstances);
-        }
-        return null;
-    }
-
-    constructor(clientId, viaServers, identifierKind, localPart, server, webInstances, eventId) {
-        const servers = [server];
-        servers.push(...viaServers);
-        this.webInstances = webInstances;
-        this.servers = orderedUnique(servers);
-        this.identifierKind = identifierKind;
-        this.identifier = `${asPrefix(identifierKind)}${localPart}:${server}`;
-        this.eventId = eventId;
-        this.clientId = clientId;
-    }
-
-    get kind() {
-        if (this.eventId) {
-            return LinkKind.Event;
-        }
-        switch (this.identifierKind) {
-            case IdentifierKind.RoomId:
-            case IdentifierKind.RoomAlias:
-                return LinkKind.Room;
-            case IdentifierKind.UserId:
-                return LinkKind.User;
-            case IdentifierKind.GroupId:
-                return LinkKind.Group;
-            default:
-                return null;
-        }
-    }
-
-    equals(link) {
-        return link &&
-            link.identifier === this.identifier &&
-            this.servers.length === link.servers.length &&
-            this.servers.every((s, i) => link.servers[i] === s) &&
-            Object.keys(this.webInstances).length === Object.keys(link.webInstances).length &&
-            Object.keys(this.webInstances).every(k => this.webInstances[k] === link.webInstances[k]);
-    }
-
-    toFragment() {
-        if (this.eventId) {
-            return `/${this.identifier}/${this.eventId}`;
-        } else {
-            return `/${this.identifier}`;
-        }
-    }
-}

src/Platform.js

@@ -1,64 +0,0 @@
-/*
-Copyright 2020 The Matrix.org Foundation C.I.C.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-import {createEnum} from "./utils/enum.js";
-
-export const Platform = createEnum(
-    "DesktopWeb",
-    "MobileWeb",
-    "Android",
-    "iOS",
-    "Windows",
-    "macOS",
-    "Linux"
-);
-
-export function guessApplicablePlatforms(userAgent, platform) {
-    // return [Platform.DesktopWeb, Platform.Linux];
-    let nativePlatform;
-    let webPlatform;
-    if (/android/i.test(userAgent)) {
-        nativePlatform = Platform.Android;
-        webPlatform = Platform.MobileWeb;
-    } else if ( // https://stackoverflow.com/questions/9038625/detect-if-device-is-ios/9039885
-        (
-            /iPad|iPhone|iPod/.test(navigator.platform) ||
-            (navigator.platform === 'MacIntel' && navigator.maxTouchPoints > 1)
-        ) && !window.MSStream
-    ) {
-        nativePlatform = Platform.iOS;
-        webPlatform = Platform.MobileWeb;
-    } else if (platform.toLowerCase().indexOf("linux") !== -1) {
-        nativePlatform = Platform.Linux;
-        webPlatform = Platform.DesktopWeb;
-    } else if (platform.toLowerCase().indexOf("mac") !== -1) {
-        nativePlatform = Platform.macOS;
-        webPlatform = Platform.DesktopWeb;
-    } else {
-        nativePlatform = Platform.Windows;
-        webPlatform = Platform.DesktopWeb;
-    }
-    return [nativePlatform, webPlatform];
-}
-
-export function isWebPlatform(p) {
-    return p === Platform.DesktopWeb || p === Platform.MobileWeb;
-}
-
-
-export function isDesktopPlatform(p) {
-    return p === Platform.Linux || p === Platform.Windows || p === Platform.macOS;
-}

src/Preferences.js

@@ -1,68 +0,0 @@
-/*
-Copyright 2020 The Matrix.org Foundation C.I.C.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-import {Platform} from "./Platform.js";
-import {EventEmitter} from "./utils/ViewModel.js";
-
-export class Preferences extends EventEmitter {
-    constructor(localStorage) {
-        super();
-        this._localStorage = localStorage;
-        this.clientId = null;
-        // used to differentiate web from native if a client supports both
-        this.platform = null;
-        this.homeservers = null;
-
-        const prefsStr = localStorage.getItem("preferred_client");
-        if (prefsStr) {
-            const {id, platform} = JSON.parse(prefsStr);
-            this.clientId = id;
-            this.platform = Platform[platform];
-        }
-        const serversStr = localStorage.getItem("consented_servers");
-        if (serversStr) {
-            this.homeservers = JSON.parse(serversStr);
-        }
-    }
-
-    setClient(id, platform) {
-        this.clientId = id;
-        platform = Platform[platform];
-        this.platform = platform;
-        this._localStorage.setItem("preferred_client", JSON.stringify({id, platform}));
-        this.emit("canClear")
-    }
-
-    setHomeservers(homeservers, persist) {
-        this.homeservers = homeservers;
-        if (persist) {
-            this._localStorage.setItem("consented_servers", JSON.stringify(homeservers));
-            this.emit("canClear");
-        }
-    }
-
-    clear() {
-        this._localStorage.removeItem("preferred_client");
-        this._localStorage.removeItem("consented_servers");
-        this.clientId = null;
-        this.platform = null;
-        this.homeservers = null;
-    }
-
-    get canClear() {
-        return !!this.clientId || !!this.platform || !!this.homeservers;
-    }
-}

src/RootView.js

@@ -1,49 +0,0 @@
-/*
-Copyright 2020 The Matrix.org Foundation C.I.C.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-import {TemplateView} from "./utils/TemplateView.js";
-import {OpenLinkView} from "./open/OpenLinkView.js";
-import {CreateLinkView} from "./create/CreateLinkView.js";
-import {LoadServerPolicyView} from "./policy/LoadServerPolicyView.js";
-import {DisclaimerView} from "./disclaimer/DisclaimerView.js";
-import {InvalidUrlView} from "./InvalidUrlView.js";
-
-export class RootView extends TemplateView {
-    render(t, vm) {
-        return t.div({className: "RootView"}, [
-            t.mapView(vm => vm.invalidUrlViewModel, invalidVM => invalidVM ? new InvalidUrlView(invalidVM) : null),
-            t.mapView(vm => vm.showDisclaimer, disclaimer => disclaimer ? new DisclaimerView() : null),
-            t.mapView(vm => vm.openLinkViewModel, vm => vm ? new OpenLinkView(vm) : null),
-            t.mapView(vm => vm.createLinkViewModel, vm => vm ? new CreateLinkView(vm) : null),
-            t.mapView(vm => vm.loadServerPolicyViewModel, vm => vm ? new LoadServerPolicyView(vm) : null),
-            t.div({className: "footer"}, [
-                t.p(t.img({src: "images/matrix-logo.svg"})),
-                t.p(["This invite uses ", externalLink(t, "https://matrix.org", "Matrix"), ", an open network for secure, decentralized communication."]),
-                t.ul({className: "links"}, [
-                    t.li(externalLink(t, "https://github.com/matrix-org/matrix.to", "GitHub project")),
-                    t.li(externalLink(t, "https://github.com/matrix-org/matrix.to/tree/main/src/open/clients", "Add your app")),
-                    t.li({className: {hidden: vm => !vm.hasPreferences}},
-                        t.button({className: "text", onClick: () => vm.clearPreferences()}, "Clear preferences")),
-                    t.li(t.a({href: "#/disclaimer/"}, "Disclaimer")),
-                ])
-            ])
-        ]);
-    }
-}
-
-function externalLink(t, href, label) {
-    return t.a({href, target: "_blank", rel: "noopener noreferrer"}, label);
-}

src/RootViewModel.js

@@ -1,98 +0,0 @@
-/*
-Copyright 2020 The Matrix.org Foundation C.I.C.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-import {Link} from "./Link.js";
-import {ViewModel} from "./utils/ViewModel.js";
-import {OpenLinkViewModel} from "./open/OpenLinkViewModel.js";
-import {createClients} from "./open/clients/index.js";
-import {CreateLinkViewModel} from "./create/CreateLinkViewModel.js";
-import {LoadServerPolicyViewModel} from "./policy/LoadServerPolicyViewModel.js";
-import {InvalidUrlViewModel} from "./InvalidUrlViewModel.js";
-import {Platform} from "./Platform.js";
-
-export class RootViewModel extends ViewModel {
-    constructor(options) {
-        super(options);
-        this.link = null;
-        this.openLinkViewModel = null;
-        this.createLinkViewModel = null;
-        this.loadServerPolicyViewModel = null;
-        this.invalidUrlViewModel = null;
-        this.showDisclaimer = false;
-        this.preferences.on("canClear", () => {
-            this.emitChange();
-        });
-    }
-
-    _updateChildVMs(newLink, oldLink) {
-        this.link = newLink;
-        if (!newLink) {
-            this.openLinkViewModel = null;
-        } else if (!oldLink || !oldLink.equals(newLink)) {
-            this.openLinkViewModel = new OpenLinkViewModel(this.childOptions({
-                link: newLink,
-                clients: createClients(),
-            }));
-        }
-    }
-
-    _hideLinks() {
-        this.link = null;
-        this.openLinkViewModel = null;
-        this.createLinkViewModel = null;
-    }
-
-    updateHash(hash) {
-        // All view models except openLink are re-created anyway. Might as well
-        // clear them to avoid having to manually reset (n-1)/n view models in every case.
-        // That just doesn't scale well when we add new views.
-        const oldLink = this.link;
-        this.invalidUrlViewModel = null;
-        this.showDisclaimer = false;
-        this.loadServerPolicyViewModel = null;
-        this.createLinkViewModel = null;
-        let newLink;
-        if (hash.startsWith("#/policy/")) {
-            const server = hash.slice(9);
-            this._updateChildVMs(null, oldLink);
-            this.loadServerPolicyViewModel = new LoadServerPolicyViewModel(this.childOptions({server}));
-            this.loadServerPolicyViewModel.load();
-        } else if (hash.startsWith("#/disclaimer/")) {
-            this._updateChildVMs(null, oldLink);
-            this.showDisclaimer = true;
-        }  else if (hash === "" || hash === "#" || hash === "#/") {
-            this._updateChildVMs(null, oldLink);
-            this.createLinkViewModel = new CreateLinkViewModel(this.childOptions());
-        } else if (newLink = Link.parseFragment(hash)) {
-            this._updateChildVMs(newLink, oldLink);
-        } else {
-            this._updateChildVMs(null, oldLink);
-            this.invalidUrlViewModel = new InvalidUrlViewModel(this.childOptions({
-                fragment: hash
-            }));
-        }
-        this.emitChange();
-    }
-
-    clearPreferences() {
-        this.preferences.clear();
-        this._updateChildVMs();
-    }
-
-    get hasPreferences() {
-        return this.preferences.canClear;
-    }
-}

src/_color-scheme.scss

@@ -0,0 +1,25 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+$app-background: #f4f4f4;
+$background: #ffffff;
+$foreground: #000000;
+$font: #333333;
+$grey: #666666;
+$accent: #0098d4;
+$error: #d6001c;
+$link: #0098d4;
+$borders: #f4f4f4;

src/_error.scss

@@ -14,5 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-import "core-js/stable";
-import "regenerator-runtime/runtime";
+@mixin error {
+    color: $error;
+    border-color: $error;
+}

src/_mixins.scss

@@ -0,0 +1,11 @@
+@mixin unreal-focus {
+    outline-width: 2px;
+    outline-style: solid;
+    outline-color: Highlight;
+
+    /* WebKit gets its native focus styles. */
+    @media (-webkit-min-device-pixel-ratio: 0) {
+        outline-color: -webkit-focus-ring-color;
+        outline-style: auto;
+    }
+}

src/clients/Element.ts

@@ -0,0 +1,97 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import {
+    LinkedClient,
+    Maturity,
+    ClientKind,
+    ClientId,
+    Platform,
+} from './types';
+import { LinkKind } from '../parser/types';
+import logo from '../imgs/element.svg';
+
+export const Element: LinkedClient = {
+    kind: ClientKind.LINKED_CLIENT,
+    name: 'Element',
+    author: 'Element',
+    logo: logo,
+    homepage: 'https://element.io',
+    maturity: Maturity.STABLE,
+    description: 'Fully-featured Matrix client for the Web',
+    platforms: [Platform.Desktop, Platform.Android, Platform.iOS],
+    experimental: false,
+    clientId: ClientId.Element,
+    toUrl: (link) => {
+        const params = link.arguments.originalParams.toString();
+        const prefixedParams = params ? `?${params}` : '';
+        switch (link.kind) {
+            case LinkKind.Alias:
+            case LinkKind.RoomId:
+                return new URL(
+                    `https://app.element.io/#/room/${link.identifier}${prefixedParams}`
+                );
+            case LinkKind.UserId:
+                return new URL(
+                    `https://app.element.io/#/user/${link.identifier}${prefixedParams}`
+                );
+            case LinkKind.Permalink:
+                return new URL(
+                    `https://app.element.io/#/room/${link.identifier}${prefixedParams}`
+                );
+            case LinkKind.GroupId:
+                return new URL(
+                    `https://app.element.io/#/group/${link.identifier}${prefixedParams}`
+                );
+        }
+    },
+    linkSupport: () => true,
+};
+
+export const ElementDevelop: LinkedClient = {
+    kind: ClientKind.LINKED_CLIENT,
+    name: 'Element Develop',
+    author: 'Element',
+    logo: logo,
+    homepage: 'https://element.io',
+    maturity: Maturity.STABLE,
+    description: 'Fully-featured Matrix client for the Web',
+    platforms: [Platform.Desktop],
+    experimental: true,
+    clientId: ClientId.ElementDevelop,
+    toUrl: (link) => {
+        switch (link.kind) {
+            case LinkKind.Alias:
+            case LinkKind.RoomId:
+                return new URL(
+                    `https://develop.element.io/#/room/${link.identifier}`
+                );
+            case LinkKind.UserId:
+                return new URL(
+                    `https://develop.element.io/#/user/${link.identifier}`
+                );
+            case LinkKind.Permalink:
+                return new URL(
+                    `https://develop.element.io/#/room/${link.identifier}`
+                );
+            case LinkKind.GroupId:
+                return new URL(
+                    `https://develop.element.io/#/group/${link.identifier}`
+                );
+        }
+    },
+    linkSupport: () => true,
+};

src/clients/Fractal.tsx

@@ -0,0 +1,74 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React from 'react';
+
+import { TextClient, Maturity, ClientKind, ClientId, Platform } from './types';
+
+import { LinkKind } from '../parser/types';
+
+import logo from '../imgs/fractal.png';
+
+const Fractal: TextClient = {
+    kind: ClientKind.TEXT_CLIENT,
+    name: 'Fractal',
+    logo: logo,
+    author: 'Daniel Garcia Moreno',
+    homepage: 'https://github.com/poljar/weechat-matrix',
+    maturity: Maturity.BETA,
+    experimental: false,
+    platforms: [Platform.Desktop],
+    clientId: ClientId.Fractal,
+    toInviteString: (link) => {
+        switch (link.kind) {
+            case LinkKind.Alias:
+            case LinkKind.RoomId:
+            case LinkKind.UserId:
+                return (
+                    <span>
+                        Click the '+' button in the top right and paste the
+                        identifier
+                    </span>
+                );
+            default:
+                return <span>Fractal doesn't support this kind of link</span>;
+        }
+    },
+    copyString: (link) => {
+        switch (link.kind) {
+            case LinkKind.Alias:
+            case LinkKind.RoomId:
+            case LinkKind.UserId:
+                return `${link.identifier}`;
+            default:
+                return '';
+        }
+    },
+    linkSupport: (link) => {
+        switch (link.kind) {
+            case LinkKind.Alias:
+            case LinkKind.RoomId:
+            case LinkKind.UserId:
+                return true;
+            default:
+                return false;
+        }
+    },
+
+    description: 'Fractal is a Matrix Client written in Rust',
+};
+
+export default Fractal;

src/clients/Nheko.tsx

@@ -0,0 +1,91 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React from 'react';
+
+import { TextClient, Maturity, ClientKind, ClientId, Platform } from './types';
+
+import { LinkKind } from '../parser/types';
+
+import logo from '../imgs/nheko.svg';
+
+const Nheko: TextClient = {
+    kind: ClientKind.TEXT_CLIENT,
+    name: 'Nheko',
+    logo: logo,
+    author: 'mujx, red_sky, deepbluev7, Konstantinos Sideris',
+    homepage: 'https://github.com/Nheko-Reborn/nheko',
+    maturity: Maturity.BETA,
+    experimental: false,
+    platforms: [Platform.Desktop],
+    clientId: ClientId.Nheko,
+    toInviteString: (link) => {
+        switch (link.kind) {
+            case LinkKind.Alias:
+            case LinkKind.RoomId:
+                return (
+                    <span>
+                        Type{' '}
+                        <code>
+                            /join{' '}
+                            <b className="matrixIdentifier">
+                                {link.identifier}
+                            </b>
+                        </code>
+                    </span>
+                );
+            case LinkKind.UserId:
+                return (
+                    <span>
+                        Type{' '}
+                        <code>
+                            /invite{' '}
+                            <b className="matrixIdentifier">
+                                {link.identifier}
+                            </b>
+                        </code>
+                    </span>
+                );
+            default:
+                return <span>Nheko doesn't support this kind of link</span>;
+        }
+    },
+    copyString: (link) => {
+        switch (link.kind) {
+            case LinkKind.Alias:
+            case LinkKind.RoomId:
+                return `/join ${link.identifier}`;
+            case LinkKind.UserId:
+                return `/invite ${link.identifier}`;
+            default:
+                return '';
+        }
+    },
+    linkSupport: (link) => {
+        switch (link.kind) {
+            case LinkKind.Alias:
+            case LinkKind.RoomId:
+            case LinkKind.UserId:
+                return true;
+            default:
+                return false;
+        }
+    },
+    description:
+        'A native desktop app for Matrix that feels more like a mainstream chat app.',
+};
+
+export default Nheko;

src/clients/Weechat.tsx

@@ -0,0 +1,91 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React from 'react';
+
+import { TextClient, Maturity, ClientKind, ClientId, Platform } from './types';
+
+import { LinkKind } from '../parser/types';
+
+import logo from '../imgs/weechat.svg';
+
+const Weechat: TextClient = {
+    kind: ClientKind.TEXT_CLIENT,
+    name: 'Weechat',
+    logo: logo,
+    author: 'Poljar',
+    homepage: 'https://github.com/poljar/weechat-matrix',
+    maturity: Maturity.LATE_BETA,
+    experimental: false,
+    platforms: [Platform.Desktop],
+    clientId: ClientId.WeeChat,
+    toInviteString: (link) => {
+        switch (link.kind) {
+            case LinkKind.Alias:
+            case LinkKind.RoomId:
+                return (
+                    <span>
+                        Type{' '}
+                        <code>
+                            /join{' '}
+                            <b className="matrixIdentifier">
+                                {link.identifier}
+                            </b>
+                        </code>
+                    </span>
+                );
+            case LinkKind.UserId:
+                return (
+                    <span>
+                        Type{' '}
+                        <code>
+                            /invite{' '}
+                            <b className="matrixIdentifier">
+                                {link.identifier}
+                            </b>
+                        </code>
+                    </span>
+                );
+            default:
+                return <span>Weechat doesn't support this kind of link</span>;
+        }
+    },
+    copyString: (link) => {
+        switch (link.kind) {
+            case LinkKind.Alias:
+            case LinkKind.RoomId:
+                return `/join ${link.identifier}`;
+            case LinkKind.UserId:
+                return `/invite ${link.identifier}`;
+            default:
+                return '';
+        }
+    },
+    linkSupport: (link) => {
+        switch (link.kind) {
+            case LinkKind.Alias:
+            case LinkKind.RoomId:
+            case LinkKind.UserId:
+                return true;
+            default:
+                return false;
+        }
+    },
+
+    description: 'Command-line Matrix interface using Weechat',
+};
+
+export default Weechat;

src/clients/index.ts

@@ -0,0 +1,45 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { Client } from './types';
+
+import { Element, ElementDevelop } from './Element';
+import Weechat from './Weechat';
+import Nheko from './Nheko';
+import Fractal from './Fractal';
+
+/*
+ * All the supported clients of matrix.to
+ */
+const clients: Client[] = [Element, Weechat, Nheko, Fractal, ElementDevelop];
+
+/*
+ * A map from sharer string to client.
+ * Configured by hand so we can change the mappings
+ * easily later.
+ */
+export const clientMap: { [key: string]: Client } = {
+    [Element.clientId]: Element,
+    [Weechat.clientId]: Weechat,
+    [ElementDevelop.clientId]: ElementDevelop,
+    [Nheko.clientId]: Nheko,
+    [Fractal.clientId]: Fractal,
+};
+
+/*
+ * All the supported clients of matrix.to
+ */
+export default clients;

src/clients/types.ts

@@ -0,0 +1,94 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { SafeLink } from '../parser/types';
+
+/*
+ * A collection of descriptive tags that can be added to
+ * a clients description.
+ */
+export enum Platform {
+    iOS = 'iOS',
+    Android = 'ANDROID',
+    Desktop = 'DESKTOP',
+}
+
+/*
+ * A collection of states used for describing a clients maturity.
+ */
+export enum Maturity {
+    ALPHA = 'ALPHA',
+    LATE_ALPHA = 'LATE ALPHA',
+    BETA = 'BETA',
+    LATE_BETA = 'LATE_BETA',
+    STABLE = 'STABLE',
+}
+
+/*
+ * Used for constructing the discriminated union of all client types.
+ */
+export enum ClientKind {
+    LINKED_CLIENT = 'LINKED_CLIENT',
+    TEXT_CLIENT = 'TEXT_CLIENT',
+}
+
+export enum ClientId {
+    Element = 'element.io',
+    ElementDevelop = 'develop.element.io',
+    WeeChat = 'weechat',
+    Nheko = 'nheko',
+    Fractal = 'fractal',
+}
+
+/*
+ * The descriptive details of a client
+ */
+export interface ClientDescription {
+    name: string;
+    author: string;
+    homepage: string;
+    logo: string;
+    description: string;
+    platforms: Platform[];
+    maturity: Maturity;
+    clientId: ClientId;
+    experimental: boolean;
+    linkSupport: (link: SafeLink) => boolean;
+}
+
+/*
+ * A client which can be opened using a link with the matrix resource.
+ */
+export interface LinkedClient extends ClientDescription {
+    kind: ClientKind.LINKED_CLIENT;
+    toUrl(parsedLink: SafeLink): URL;
+}
+
+/*
+ * A client which provides isntructions for how to access the descired
+ * resource.
+ */
+export interface TextClient extends ClientDescription {
+    kind: ClientKind.TEXT_CLIENT;
+    toInviteString(parsedLink: SafeLink): JSX.Element;
+    copyString(parsedLink: SafeLink): string;
+}
+
+/*
+ * A description for a client as well as a method for converting matrix.to
+ * links to the client's specific representation.
+ */
+export type Client = LinkedClient | TextClient;

src/components/Avatar.scss

@@ -0,0 +1,29 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+@import '../color-scheme';
+
+.avatar {
+    border-radius: 100%;
+    border: 1px solid $borders;
+    height: 60px;
+    width: 60px;
+}
+
+.avatarNoCrop {
+    border-radius: 0;
+    border: 0;
+}

src/components/Avatar.stories.tsx

@@ -0,0 +1,44 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// disable camelcase check because our object keys come
+// from the matrix spec
+/* eslint-disable @typescript-eslint/camelcase */
+
+import React from 'react';
+
+import { UserAvatar } from './Avatar';
+
+export default {
+    title: 'Avatar',
+    parameters: {
+        design: {
+            type: 'figma',
+            url:
+                'https://www.figma.com/file/WSXjCGc1k6FVI093qhlzOP/04-Recieving-share-link?node-id=143%3A5853',
+        },
+    },
+};
+
+export const Default: React.FC<{}> = () => (
+    <UserAvatar
+        user={{
+            avatar_url: 'mxc://matrix.org/EqMZYbAYhREvHXvYFyfxOlkf',
+            displayname: 'Jorik Schellekens',
+        }}
+        userId="@jorik:matrix.org"
+    />
+);

src/components/Avatar.tsx

@@ -0,0 +1,121 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React, { useEffect, useState } from 'react';
+import classNames from 'classnames';
+
+import { Group, Room, User } from '../matrix-cypher';
+import useHSs from '../utils/getHS';
+import { getThumbnailURI } from '../utils/cypher-wrapper';
+import logo from '../imgs/chat-icon.svg';
+
+import './Avatar.scss';
+
+const AVATAR_SIZE = 96;
+
+interface IProps {
+    className?: string;
+    avatarUrl: string;
+    label: string;
+}
+
+const Avatar: React.FC<IProps> = ({ className, avatarUrl, label }: IProps) => {
+    const [src, setSrc] = useState(avatarUrl);
+    useEffect(() => {
+        setSrc(avatarUrl ? avatarUrl : logo);
+    }, [avatarUrl]);
+
+    const _className = classNames('avatar', className, {
+        avatarNoCrop: src === logo,
+    });
+    return (
+        <img
+            src={src}
+            onError={(): void => setSrc(logo)}
+            alt={label}
+            className={_className}
+        />
+    );
+};
+
+interface IPropsUserAvatar {
+    user: User;
+    userId: string;
+}
+
+export const UserAvatar: React.FC<IPropsUserAvatar> = ({
+    user,
+    userId,
+}: IPropsUserAvatar) => {
+    const [hs] = useHSs({ identifier: userId });
+    return (
+        <Avatar
+            avatarUrl={getThumbnailURI(
+                hs,
+                AVATAR_SIZE,
+                AVATAR_SIZE,
+                user.avatar_url
+            )}
+            label={user.displayname ? user.displayname : userId}
+        />
+    );
+};
+
+interface IPropsRoomAvatar {
+    room: Room;
+}
+
+export const RoomAvatar: React.FC<IPropsRoomAvatar> = ({
+    room,
+}: IPropsRoomAvatar) => {
+    const [hs] = useHSs({ identifier: room.room_id });
+    return (
+        <Avatar
+            avatarUrl={getThumbnailURI(
+                hs,
+                AVATAR_SIZE,
+                AVATAR_SIZE,
+                room.avatar_url
+            )}
+            label={room.name || room.room_id}
+        />
+    );
+};
+
+interface IPropsGroupAvatar {
+    group: Group;
+    groupId: string;
+}
+
+export const GroupAvatar: React.FC<IPropsGroupAvatar> = ({
+    group,
+    groupId,
+}: IPropsGroupAvatar) => {
+    const [hs] = useHSs({ identifier: groupId });
+    return (
+        <Avatar
+            avatarUrl={getThumbnailURI(
+                hs,
+                AVATAR_SIZE,
+                AVATAR_SIZE,
+                group.avatar_url
+            )}
+            label={group.name}
+        />
+    );
+};
+
+export default Avatar;

src/components/Button.scss

@@ -0,0 +1,61 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+@import '../color-scheme';
+
+.button {
+    width: 100%;
+
+    height: 48px;
+
+    border-radius: 2rem;
+    border: 0;
+
+    background-color: $foreground;
+    color: $background;
+
+    font-size: 14px;
+    font-weight: 500;
+
+    &:hover {
+        cursor: pointer;
+    }
+
+    position: relative;
+
+    .buttonIcon {
+        position: absolute;
+        height: 24px;
+        width: 24px;
+
+        left: 18px;
+        top: 12px;
+    }
+}
+
+.buttonSecondary {
+    background-color: $background;
+    color: $foreground;
+    border: 1px solid $foreground;
+}
+
+.errorButton:hover {
+    cursor: not-allowed;
+}
+
+.buttonHighlight {
+    background-color: $accent;
+}

src/components/Button.stories.tsx

@@ -0,0 +1,33 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React from 'react';
+import { action } from '@storybook/addon-actions';
+import { text } from '@storybook/addon-knobs';
+
+import Button from './Button';
+
+export default { title: 'Button' };
+
+export const WithText: React.FC = () => (
+    <Button onClick={action('clicked')}>
+        {text('label', 'Hello Story Book')}
+    </Button>
+);
+
+export const Secondary: React.FC = () => (
+    <Button secondary>Secondary button</Button>
+);

src/components/Button.tsx

@@ -0,0 +1,89 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React from 'react';
+import classnames from 'classnames';
+
+import './Button.scss';
+
+interface IProps extends React.ButtonHTMLAttributes<Element> {
+    // Briefly display these instead of the children onClick
+    flashChildren?: React.ReactNode;
+    secondary?: boolean;
+    icon?: string;
+    flashIcon?: string;
+}
+
+/**
+ * Like a normal button except it will flash content when clicked.
+ */
+const Button: React.FC<
+    IProps & React.RefAttributes<HTMLButtonElement>
+> = React.forwardRef(
+    (
+        {
+            onClick,
+            children,
+            flashChildren,
+            className,
+            secondary,
+            icon,
+            flashIcon,
+            ...props
+        }: IProps,
+        ref: React.Ref<HTMLButtonElement>
+    ) => {
+        const [wasClicked, setWasClicked] = React.useState(false);
+
+        const wrappedOnClick: React.MouseEventHandler = (e) => {
+            if (onClick) {
+                onClick(e);
+            }
+
+            setWasClicked(true);
+            window.setTimeout(() => {
+                setWasClicked(false);
+            }, 1000);
+        };
+
+        const content = wasClicked && flashChildren ? flashChildren : children;
+
+        const classNames = classnames('button', className, {
+            buttonHighlight: wasClicked,
+            buttonSecondary: secondary,
+        });
+
+        const iconSrc = wasClicked && flashIcon ? flashIcon : icon;
+
+        const buttonIcon = icon ? (
+            <img className="buttonIcon" src={iconSrc} alt="" />
+        ) : null;
+
+        return (
+            <button
+                className={classNames}
+                onClick={wrappedOnClick}
+                ref={ref}
+                {...props}
+            >
+                {buttonIcon}
+                {content}
+            </button>
+        );
+    }
+);
+
+export default Button;

src/components/ClientList.scss

@@ -0,0 +1,22 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+.clientList {
+    display: grid;
+    row-gap: 20px;
+    list-style-type: none;
+    padding-inline-start: 0;
+}

src/components/ClientList.tsx

@@ -0,0 +1,98 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React, { useContext } from 'react';
+import { UAContext } from '@quentin-sommer/react-useragent';
+
+import { SafeLink } from '../parser/types';
+import { ActionType, ClientContext } from '../contexts/ClientContext';
+import Clients from '../clients';
+import { Client, Platform } from '../clients/types';
+import ClientTile from './ClientTile';
+
+import './ClientList.scss';
+
+interface IProps {
+    link: SafeLink;
+    rememberSelection: boolean;
+}
+
+const ClientList: React.FC<IProps> = ({ link, rememberSelection }: IProps) => {
+    const [
+        { showOnlyDeviceClients, showExperimentalClients },
+        clientDispatcher,
+    ] = useContext(ClientContext);
+    const { uaResults } = useContext(UAContext);
+
+    /*
+     * Function to decide whether a client is shown
+     */
+    const showClient = (client: Client): boolean => {
+        let showClient = false;
+
+        if (!showOnlyDeviceClients || uaResults === {}) {
+            showClient = true;
+        }
+
+        for (const platform of client.platforms) {
+            switch (platform) {
+                case Platform.Desktop:
+                    showClient = showClient || !(uaResults as any).mobile;
+                    break;
+                case Platform.iOS:
+                    showClient = showClient || (uaResults as any).ios;
+                    break;
+                case Platform.Android:
+                    showClient = showClient || (uaResults as any).android;
+                    break;
+            }
+        }
+
+        if (!showExperimentalClients && client.experimental) {
+            showClient = false;
+        }
+
+        if (!client.linkSupport(link)) {
+            showClient = false;
+        }
+
+        return showClient;
+    };
+
+    const clientLi = (client: Client): JSX.Element => (
+        <li
+            key={client.clientId}
+            onClick={(): void =>
+                rememberSelection
+                    ? clientDispatcher({
+                          action: ActionType.SetClient,
+                          clientId: client.clientId,
+                      })
+                    : undefined
+            }
+        >
+            <ClientTile client={client} link={link} />
+        </li>
+    );
+
+    return (
+        <ul className="clientList">
+            {Clients.filter(showClient).map(clientLi)}
+        </ul>
+    );
+};
+
+export default ClientList;

src/components/ClientSelection.scss

@@ -14,12 +14,14 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-export function orderedUnique(array) {
-    const copy = [];
-    for (let i = 0; i < array.length; ++i) {
-        if (i === 0 || array.lastIndexOf(array[i], i - 1) === -1) {
-            copy.push(array[i]);
+.advanced {
+    display: grid;
+    row-gap: 20px;
+
+    .advancedOptions {
+        display: flex;
+        flex-direction: column;
+
+        align-items: flex-start;
     }
 }
-    return copy;
-}

src/components/ClientSelection.tsx

@@ -0,0 +1,88 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React, { useContext, useState } from 'react';
+
+import './ClientSelection.scss';
+import { ActionType, ClientContext } from '../contexts/ClientContext';
+import ClientList from './ClientList';
+import { SafeLink } from '../parser/types';
+import Button from './Button';
+import StyledCheckbox from './StyledCheckbox';
+
+interface IProps {
+    link: SafeLink;
+}
+
+const ClientSelection: React.FC<IProps> = ({ link }: IProps) => {
+    const [clientState, clientStateDispatch] = useContext(ClientContext);
+    const [rememberSelection, setRememberSelection] = useState(false);
+    const options = (
+        <div className="advancedOptions">
+            <StyledCheckbox
+                onChange={(): void => {
+                    setRememberSelection(!rememberSelection);
+                }}
+                checked={rememberSelection}
+            >
+                Remember for future invites in this browser
+            </StyledCheckbox>
+            <StyledCheckbox
+                onChange={(): void => {
+                    clientStateDispatch({
+                        action: ActionType.ToggleShowOnlyDeviceClients,
+                    });
+                }}
+                checked={clientState.showOnlyDeviceClients}
+            >
+                Show only clients suggested for this device
+            </StyledCheckbox>
+            <StyledCheckbox
+                onChange={(): void => {
+                    clientStateDispatch({
+                        action: ActionType.ToggleShowExperimentalClients,
+                    });
+                }}
+                checked={clientState.showExperimentalClients}
+            >
+                Show experimental clients
+            </StyledCheckbox>
+        </div>
+    );
+
+    const clearSelection =
+        clientState.clientId !== null ? (
+            <Button
+                onClick={(): void =>
+                    clientStateDispatch({
+                        action: ActionType.ClearClient,
+                    })
+                }
+            >
+                Clear my default client
+            </Button>
+        ) : null;
+
+    return (
+        <div className="advanced">
+            {options}
+            <ClientList link={link} rememberSelection={rememberSelection} />
+            {clearSelection}
+        </div>
+    );
+};
+
+export default ClientSelection;

src/components/ClientTile.scss

@@ -0,0 +1,75 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+@import '../color-scheme';
+
+.clientTile {
+    display: flex;
+    flex-direction: row;
+    align-items: flex-start;
+
+    min-height: 150px;
+    width: 100%;
+
+    color: $foreground;
+
+    > img {
+        flex-shrink: 0;
+        height: 116px;
+        width: 116px;
+        margin-right: 14px;
+        border-radius: 16px;
+    }
+
+    > div {
+        display: flex;
+        flex-direction: column;
+        justify-content: space-between;
+        h1 {
+            text-align: left;
+            font-size: 14px;
+            line-height: 24px;
+        }
+
+        p {
+            margin-right: 8px;
+            text-align: left;
+        }
+
+        .button {
+            height: 40px;
+            width: 130px;
+            margin-top: 16px;
+        }
+    }
+
+    border-radius: 8px;
+
+    padding: 15px;
+
+    // For the chevron
+    position: relative;
+
+    &:hover {
+        background-color: $app-background;
+    }
+}
+
+.clientTileLink {
+    position: relative;
+
+    width: 100%;
+}

src/components/ClientTile.tsx

@@ -0,0 +1,78 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React from 'react';
+import classNames from 'classnames';
+
+import { Client, ClientKind } from '../clients/types';
+import { SafeLink } from '../parser/types';
+import Tile from './Tile';
+import Button from './Button';
+
+import './ClientTile.scss';
+
+interface IProps {
+    client: Client;
+    link: SafeLink;
+}
+
+const ClientTile: React.FC<IProps> = ({ client, link }: IProps) => {
+    const inviteLine =
+        client.kind === ClientKind.TEXT_CLIENT ? (
+            <p>{client.toInviteString(link)}</p>
+        ) : null;
+
+    const className = classNames('clientTile', {
+        clientTileLink: client.kind === ClientKind.LINKED_CLIENT,
+    });
+
+    let inviteButton: JSX.Element = <></>;
+    if (client.kind === ClientKind.LINKED_CLIENT) {
+        inviteButton = <Button>Accept invite</Button>;
+    } else {
+        const copyString = client.copyString(link);
+        if (copyString !== '') {
+            inviteButton = (
+                <Button
+                    onClick={() => navigator.clipboard?.writeText(copyString)}
+                    flashChildren="Invite copied"
+                >
+                    Copy invite
+                </Button>
+            );
+        }
+    }
+
+    let clientTile = (
+        <Tile className={className}>
+            <img src={client.logo} alt={client.name + ' logo'} />
+            <div>
+                <h1>{client.name}</h1>
+                <p>{client.description}</p>
+                {inviteLine}
+                {inviteButton}
+            </div>
+        </Tile>
+    );
+
+    if (client.kind === ClientKind.LINKED_CLIENT) {
+        clientTile = <a href={client.toUrl(link).toString()}>{clientTile}</a>;
+    }
+
+    return clientTile;
+};
+
+export default ClientTile;

src/components/CreateLinkTile.scss

@@ -0,0 +1,89 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+@import '../color-scheme';
+
+.createLinkTile {
+    background: none;
+
+    row-gap: 24px;
+
+    * {
+        width: 100%;
+    }
+
+    > form {
+        display: grid;
+        row-gap: 24px;
+        align-self: center;
+    }
+
+    > a {
+        color: $foreground;
+    }
+
+    .createLinkReset {
+        height: 40px;
+        width: 40px;
+
+        border-radius: 100%;
+        border: 1px solid lighten($grey, 50%);
+
+        background: $background;
+
+        padding: 6px;
+
+        position: relative;
+
+        > div {
+            // This is a terrible case of faking it till
+            // we make it. It will break. I'm so sorry
+            position: absolute;
+            display: none;
+
+            width: max-content;
+            top: -35px;
+            left: -17px;
+
+            border-radius: 30px;
+            padding: 5px 15px;
+
+            background: $background;
+
+            word-wrap: none;
+        }
+
+        img {
+            height: 100%;
+            width: 100%;
+            border: 0;
+
+            filter: invert(12%);
+        }
+
+        &:hover {
+            border: 0;
+
+            background: $foreground;
+
+            cursor: pointer;
+
+            > div {
+                display: block;
+            }
+        }
+    }
+}

src/components/CreateLinkTile.stories.tsx

@@ -0,0 +1,32 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React from 'react';
+
+import CreateLinkTile from './CreateLinkTile';
+
+export default {
+    title: 'CreateLinkTile',
+    parameters: {
+        design: {
+            type: 'figma',
+            url:
+                'https://figma.com/file/WSXjCGc1k6FVI093qhlzOP/04-Recieving-share-link?node-id=59%3A1',
+        },
+    },
+};
+
+export const Default: React.FC = () => <CreateLinkTile />;

src/components/CreateLinkTile.tsx

@@ -0,0 +1,156 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React, { useEffect, useRef } from 'react';
+import { Formik, Form } from 'formik';
+
+import Tile from './Tile';
+import Button from './Button';
+import Input from './Input';
+import { parseHash } from '../parser/parser';
+import { LinkKind } from '../parser/types';
+import linkIcon from '../imgs/link.svg';
+import copyIcon from '../imgs/copy.svg';
+import tickIcon from '../imgs/tick.svg';
+import refreshIcon from '../imgs/refresh.svg';
+import './CreateLinkTile.scss';
+
+interface ILinkNotCreatedTileProps {
+    setLink: React.Dispatch<React.SetStateAction<string>>;
+}
+
+interface FormValues {
+    identifier: string;
+}
+
+// Hacky use of types here
+function validate(values: FormValues): Partial<FormValues> {
+    const errors: Partial<FormValues> = {};
+
+    if (values.identifier === '') {
+        errors.identifier = '';
+        return errors;
+    }
+
+    const parse = parseHash(values.identifier);
+
+    if (parse.kind === LinkKind.ParseFailed) {
+        errors.identifier =
+            "That identifier doesn't look right. Double check the details.";
+    }
+
+    return errors;
+}
+
+const LinkNotCreatedTile: React.FC<ILinkNotCreatedTileProps> = (
+    props: ILinkNotCreatedTileProps
+) => {
+    return (
+        <Tile className="createLinkTile">
+            <h1>
+                Create shareable links to Matrix rooms, users or messages
+                without being tied to any app
+            </h1>
+            <Formik
+                initialValues={{
+                    identifier: '',
+                }}
+                validate={validate}
+                onSubmit={(values): void => {
+                    props.setLink(
+                        document.location.protocol +
+                            '//' +
+                            document.location.host +
+                            '/#/' +
+                            values.identifier
+                    );
+                }}
+            >
+                {(formik): JSX.Element => (
+                    <Form>
+                        <Input
+                            name={'identifier'}
+                            type={'text'}
+                            placeholder="#room:example.com, @user:example.com"
+                            autoFocus
+                        />
+                        <Button
+                            type="submit"
+                            icon={linkIcon}
+                            disabled={!!formik.errors.identifier}
+                            className={
+                                formik.errors.identifier ? 'errorButton' : ''
+                            }
+                        >
+                            Create Link
+                        </Button>
+                    </Form>
+                )}
+            </Formik>
+        </Tile>
+    );
+};
+
+interface ILinkCreatedTileProps {
+    link: string;
+    setLink: React.Dispatch<React.SetStateAction<string>>;
+}
+
+const LinkCreatedTile: React.FC<ILinkCreatedTileProps> = (props) => {
+    const buttonRef = useRef<HTMLButtonElement>(null);
+
+    // Focus button on render
+    useEffect((): void => {
+        if (buttonRef && buttonRef.current) {
+            buttonRef.current.focus();
+        }
+    });
+
+    return (
+        <Tile className="createLinkTile">
+            <button
+                className="createLinkReset"
+                onClick={(): void => props.setLink('')}
+            >
+                <div>New link</div>
+                <img src={refreshIcon} alt="Go back to matrix.to home page" />
+            </button>
+            <h1 className="linkHeader matrixIdentifier">{props.link}</h1>
+            <Button
+                flashChildren={'Copied'}
+                icon={copyIcon}
+                flashIcon={tickIcon}
+                onClick={(): void => {
+                    navigator.clipboard?.writeText(props.link);
+                }}
+                ref={buttonRef}
+            >
+                Copy Link
+            </Button>
+        </Tile>
+    );
+};
+
+const CreateLinkTile: React.FC = () => {
+    const [link, setLink] = React.useState('');
+    if (!link) {
+        return <LinkNotCreatedTile setLink={setLink} />;
+    } else {
+        return <LinkCreatedTile link={link} setLink={setLink} />;
+    }
+};
+
+export default CreateLinkTile;

src/components/DefaultPreview.scss

@@ -0,0 +1,22 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+.defaultPreview {
+    .avatar {
+        border-radius: 0;
+        border: 0;
+    }
+}

src/components/DefaultPreview.tsx

@@ -0,0 +1,42 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React from 'react';
+
+import { SafeLink } from '../parser/types';
+import Avatar from './Avatar';
+
+import './DefaultPreview.scss';
+
+import genericRoomPreview from '../imgs/chat-icon.svg';
+
+interface IProps {
+    link: SafeLink;
+}
+
+const DefaultPreview: React.FC<IProps> = ({ link }: IProps) => {
+    return (
+        <div className="defaultPreview">
+            <Avatar
+                avatarUrl={genericRoomPreview}
+                label={`Generic icon representing ${link.identifier}`}
+            />
+            <h1 className="matrixIdentifier">{link.identifier}</h1>
+        </div>
+    );
+};
+
+export default DefaultPreview;

src/components/EventPreview.tsx

@@ -0,0 +1,35 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React from 'react';
+import { Room, Event } from '../matrix-cypher';
+
+import RoomPreview from './RoomPreview';
+
+interface IProps {
+    room: Room;
+    event: Event;
+}
+
+const EventPreview: React.FC<IProps> = ({ room, event }: IProps) => (
+    <>
+        <RoomPreview room={room} />
+        <p>"{event.content}"</p>
+        <p>{event.sender}</p>
+    </>
+);
+
+export default EventPreview;

src/components/FakeProgress.scss

@@ -0,0 +1,31 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+@import '../color-scheme';
+
+.fakeProgress {
+    width: 100%;
+    height: 4px;
+    background-color: lighten($grey, 50%);
+    border-radius: 4px;
+
+    > div {
+        width: 60%;
+        height: 100%;
+        background-color: $foreground;
+        border-radius: 4px;
+    }
+}

src/components/FakeProgress.tsx

@@ -0,0 +1,27 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React from 'react';
+
+import './FakeProgress.scss';
+
+const FakeProgress = () => (
+    <div className="fakeProgress">
+        <div />
+    </div>
+);
+
+export default FakeProgress;

src/components/Footer.scss

@@ -14,12 +14,20 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-import {ViewModel} from "./utils/ViewModel.js";
-import {tryFixUrl} from "./Link.js";
+@import '../color-scheme';
 
-export class InvalidUrlViewModel extends ViewModel {
-    constructor(options) {
-        super(options);
-        this.validFixes = tryFixUrl(options.fragment);
+.footer {
+    display: grid;
+    grid-auto-flow: column;
+    justify-content: center;
+    column-gap: 5px;
+
+    * {
+        color: $font;
+    }
+
+    .textButton {
+        margin: 0;
+        padding: 0;
     }
 }

src/components/Footer.tsx

@@ -0,0 +1,65 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React, { useContext } from 'react';
+
+import HSContext, {
+    HSOptions,
+    ActionType as HSACtionType,
+} from '../contexts/HSContext';
+import ClientContext, {
+    ActionType as ClientActionType,
+} from '../contexts/ClientContext';
+import TextButton from './TextButton';
+
+import './Footer.scss';
+
+const Footer: React.FC = () => {
+    const [hsState, hsDispatch] = useContext(HSContext);
+    const [clientState, clientDispatch] = useContext(ClientContext);
+
+    const clear =
+        hsState.option !== HSOptions.Unset || clientState.clientId !== null ? (
+            <>
+                {' · '}
+                <TextButton
+                    onClick={(): void => {
+                        hsDispatch({
+                            action: HSACtionType.Clear,
+                        });
+                        clientDispatch({
+                            action: ClientActionType.ClearClient,
+                        });
+                    }}
+                >
+                    Clear preferences
+                </TextButton>
+            </>
+        ) : null;
+
+    return (
+        <div className="footer">
+            <a href="https://github.com/matrix-org/matrix.to">GitHub</a>
+            {' · '}
+            <a href="https://github.com/matrix-org/matrix.to/tree/matrix-two/src/clients">
+                Add your client
+            </a>
+            {clear}
+        </div>
+    );
+};
+
+export default Footer;

src/components/GroupPreview.scss

@@ -0,0 +1,26 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+.groupPreview {
+    > .avatar {
+        margin-bottom: 8px;
+    }
+
+    > h1 {
+        font-size: 24px;
+        margin-bottom: 4px;
+    }
+}

src/components/GroupPreview.tsx

@@ -0,0 +1,45 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React from 'react';
+import { Group } from '../matrix-cypher';
+
+import { GroupAvatar } from './Avatar';
+
+import './GroupPreview.scss';
+
+interface IProps {
+    group: Group;
+    groupId: string;
+}
+
+const GroupPreview: React.FC<IProps> = ({ group, groupId }: IProps) => {
+    const description = group.long_description
+        ? group.long_description
+        : group.short_description
+        ? group.short_description
+        : null;
+
+    return (
+        <div className="groupPreview">
+            <GroupAvatar group={group} groupId={groupId}/>
+            <h1>{group.name}</h1>
+            {description ? <p>{description}</p> : null}
+        </div>
+    );
+};
+
+export default GroupPreview;

src/components/HomeserverOptions.scss

@@ -0,0 +1,57 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+@import '../color-scheme';
+
+.homeserverOptions {
+    display: grid;
+    row-gap: 20px;
+
+    background: $app-background;
+    text-align: left;
+
+    > * {
+        width: 100%;
+    }
+
+    .homeserverOptionsDescription {
+        width: 100%;
+
+        display: flex;
+        flex-direction: row;
+        justify-content: space-between;
+
+        > p {
+            flex-grow: 1;
+        }
+
+        > img {
+            flex-shrink: 0;
+            flex-grow: 0;
+            background-color: $background;
+            height: 62px;
+            width: 62px;
+            padding: 11px;
+            border-radius: 100%;
+            margin-left: 14px;
+        }
+    }
+
+    form {
+        display: grid;
+        row-gap: 25px;
+    }
+}

src/components/HomeserverOptions.stories.tsx

@@ -0,0 +1,42 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React from 'react';
+
+import HomeserverOptions from './HomeserverOptions';
+import { LinkKind } from '../parser/types';
+
+export default {
+    title: 'HomeserverOptions',
+    parameters: {
+        design: {
+            type: 'figma',
+            url:
+                'https://figma.com/file/WSXjCGc1k6FVI093qhlzOP/04-Recieving-share-link?node-id=143%3A5853',
+        },
+    },
+};
+
+export const Default: React.FC = () => (
+    <HomeserverOptions
+        link={{
+            identifier: '#banter:matrix.org',
+            arguments: { vias: [], originalParams: new URLSearchParams() },
+            kind: LinkKind.Alias,
+            originalLink: 'This is all made up',
+        }}
+    />
+);

src/components/HomeserverOptions.tsx

@@ -0,0 +1,130 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React, { useContext, useState } from 'react';
+import { Formik, Form } from 'formik';
+import { string } from 'zod';
+
+import Tile from './Tile';
+import HSContext, { TempHSContext, ActionType } from '../contexts/HSContext';
+import icon from '../imgs/telecom-mast.svg';
+import Button from './Button';
+import Input from './Input';
+import StyledCheckbox from './StyledCheckbox';
+import { SafeLink } from '../parser/types';
+
+import './HomeserverOptions.scss';
+
+interface IProps {
+    link: SafeLink;
+}
+
+interface FormValues {
+    HSUrl: string;
+}
+
+function validateURL(values: FormValues): Partial<FormValues> {
+    const errors: Partial<FormValues> = {};
+    try {
+        string().url().parse(values.HSUrl);
+    } catch {
+        errors.HSUrl =
+            'This must be a valid homeserver URL, starting with https://';
+    }
+    return errors;
+}
+
+const HomeserverOptions: React.FC<IProps> = ({ link }: IProps) => {
+    const HSStateDispatcher = useContext(HSContext)[1];
+    const TempHSStateDispatcher = useContext(TempHSContext)[1];
+
+    const [rememberSelection, setRemeberSelection] = useState(false);
+
+    // Select which disaptcher to use based on whether we're writing
+    // the choice to localstorage
+    const dispatcher = rememberSelection
+        ? HSStateDispatcher
+        : TempHSStateDispatcher;
+
+    const hsInput = (
+        <Formik
+            initialValues={{
+                HSUrl: '',
+            }}
+            validate={validateURL}
+            onSubmit={({ HSUrl }): void =>
+                dispatcher({ action: ActionType.SetHS, HSURL: HSUrl })
+            }
+        >
+            {({ values, errors }): JSX.Element => (
+                <Form>
+                    <Input
+                        muted={!values.HSUrl}
+                        type="text"
+                        name="HSUrl"
+                        placeholder="Preferred homeserver URL"
+                    />
+                    {values.HSUrl && !errors.HSUrl ? (
+                        <Button secondary type="submit">
+                            Use {values.HSUrl}
+                        </Button>
+                    ) : null}
+                </Form>
+            )}
+        </Formik>
+    );
+
+    return (
+        <Tile className="homeserverOptions">
+            <div className="homeserverOptionsDescription">
+                <div>
+                    <h3>
+                        About&nbsp;
+                        <span className="matrixIdentifier">
+                            {link.identifier}
+                        </span>
+                    </h3>
+                    <p>
+                        A homeserver will show you metadata about the link, like
+                        a description. Homeservers will be able to relate your
+                        IP to things you've opened invites for in matrix.to.
+                    </p>
+                </div>
+                <img
+                    src={icon}
+                    alt="Icon making it clear that connections may be made with external services"
+                />
+            </div>
+            <StyledCheckbox
+                checked={rememberSelection}
+                onChange={(e): void => setRemeberSelection(e.target.checked)}
+            >
+                Remember my choice
+            </StyledCheckbox>
+            <Button
+                secondary
+                onClick={(): void => {
+                    dispatcher({ action: ActionType.SetAny });
+                }}
+            >
+                Use any homeserver
+            </Button>
+            {hsInput}
+        </Tile>
+    );
+};
+
+export default HomeserverOptions;

src/components/Input.scss

@@ -0,0 +1,50 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+@import '../color-scheme';
+@import '../error';
+
+.input {
+    width: 100%;
+    padding: 12px;
+
+    background: $background;
+
+    border: 1px solid $foreground;
+    font: lighten($grey, 60%);
+    border-radius: 24px;
+
+    font-size: 14px;
+    line-height: 24px;
+
+    &.error {
+        @include error;
+    }
+
+    &:focus {
+        border: 1px solid $font;
+        font: $font;
+    }
+}
+
+.inputError {
+    @include error;
+    text-align: center;
+}
+
+.inputMuted {
+    border-color: lighten($grey, 60%);
+}

src/components/Input.stories.tsx

@@ -0,0 +1,45 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React from 'react';
+import { withDesign } from 'storybook-addon-designs';
+import { Formik, Form } from 'formik';
+
+import Input from './Input';
+
+export default {
+    title: 'Input',
+    parameters: {
+        design: {
+            type: 'figma',
+            url:
+                'https://figma.com/file/WSXjCGc1k6FVI093qhlzOP/04-Recieving-share-link?node-id=59%3A1',
+        },
+    },
+    decorators: [withDesign],
+};
+
+export const Default: React.FC = () => (
+    <Formik initialValues={{}} onSubmit={(): void => {}}>
+        <Form>
+            <Input
+                name="Example input"
+                type="text"
+                placeholder="Write something"
+            />
+        </Form>
+    </Formik>
+);

src/components/Input.tsx

@@ -0,0 +1,50 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React from 'react';
+import classnames from 'classnames';
+import { useField } from 'formik';
+
+import './Input.scss';
+
+interface IProps extends React.InputHTMLAttributes<HTMLElement> {
+    name: string;
+    type: string;
+    muted?: boolean;
+}
+
+const Input: React.FC<IProps> = ({ className, muted, ...props }) => {
+    const [field, meta] = useField(props);
+
+    const errorBool = meta.touched && meta.value !== '' && meta.error;
+    const error = errorBool ? (
+        <div className="inputError">{meta.error}</div>
+    ) : null;
+
+    const classNames = classnames('input', className, {
+        error: errorBool,
+        inputMuted: !!muted,
+    });
+
+    return (
+        <>
+            <input type="text" className={classNames} {...field} {...props} />
+            {error}
+        </>
+    );
+};
+
+export default Input;

src/components/InviteTile.scss

@@ -0,0 +1,39 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+@import '../color-scheme';
+
+.inviteTile {
+    display: grid;
+    row-gap: 24px;
+
+    .inviteTileClientSelection {
+        margin: 0 auto;
+        display: grid;
+
+        justify-content: space-between;
+        row-gap: 20px;
+
+        h2 + p {
+            color: $foreground;
+        }
+    }
+
+    hr {
+        width: 100%;
+        margin: 0;
+    }
+}

src/components/InviteTile.stories.tsx

@@ -0,0 +1,123 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// disable camelcase check because our object keys come
+// from the matrix spec
+/* eslint-disable @typescript-eslint/camelcase */
+
+import React from 'react';
+
+import InviteTile from './InviteTile';
+import UserPreview, { InviterPreview } from './UserPreview';
+import RoomPreview, { RoomPreviewWithTopic } from './RoomPreview';
+import Clients from '../clients';
+import { LinkKind, SafeLink } from '../parser/types';
+
+export default {
+    title: 'InviteTile',
+    parameters: {
+        design: {
+            type: 'figma',
+            url:
+                'https://figma.com/file/WSXjCGc1k6FVI093qhlzOP/04-Recieving-share-link?node-id=59%3A334',
+        },
+    },
+};
+
+const userLink: SafeLink = {
+    kind: LinkKind.UserId,
+    identifier: '@jorik:matrix.org',
+    arguments: {
+        vias: [],
+        originalParams: new URLSearchParams(),
+    },
+    originalLink: 'asdfsadf',
+};
+
+const roomLink: SafeLink = {
+    kind: LinkKind.Alias,
+    identifier: '#element-dev:matrix.org',
+    arguments: {
+        vias: [],
+        originalParams: new URLSearchParams(),
+    },
+    originalLink: 'asdfsadf',
+};
+
+export const withLink: React.FC<{}> = () => (
+    <InviteTile client={Clients[0]} link={userLink}>
+        This is an invite with a link
+    </InviteTile>
+);
+
+export const withInstruction: React.FC<{}> = () => (
+    <InviteTile client={Clients[0]} link={userLink}>
+        This is an invite with an instruction
+    </InviteTile>
+);
+
+export const withUserPreview: React.FC<{}> = () => (
+    <InviteTile client={Clients[0]} link={userLink}>
+        <UserPreview
+            user={{
+                avatar_url: 'mxc://matrix.org/EqMZYbAYhREvHXvYFyfxOlkf',
+                displayname: 'Nicholas Briteli',
+            }}
+            userId="@nicholasbritelli:matrix.org"
+        />
+    </InviteTile>
+);
+
+export const withRoomPreviewAndRoomTopic: React.FC<{}> = () => (
+    <InviteTile client={Clients[0]} link={roomLink}>
+        <RoomPreviewWithTopic
+            room={{
+                aliases: ['#murrays:cheese.bar'],
+                avatar_url: 'mxc://bleeker.street/CHEDDARandBRIE',
+                guest_can_join: false,
+                name: 'CHEESE',
+                num_joined_members: 37,
+                room_id: '!ol19s:bleecker.street',
+                topic: 'Tasty tasty cheese',
+                world_readable: true,
+            }}
+        />
+    </InviteTile>
+);
+
+export const withRoomPreviewAndInviter: React.FC<{}> = () => (
+    <InviteTile client={Clients[0]} link={roomLink}>
+        <InviterPreview
+            user={{
+                avatar_url: 'mxc://matrix.org/EqMZYbAYhREvHXvYFyfxOlkf',
+                displayname: 'Nicholas Briteli',
+            }}
+            userId="@nicholasbritelli:matrix.org"
+        />
+        <RoomPreview
+            room={{
+                aliases: ['#murrays:cheese.bar'],
+                avatar_url: 'mxc://bleeker.street/CHEDDARandBRIE',
+                guest_can_join: false,
+                name: 'CHEESE',
+                num_joined_members: 37,
+                room_id: '!ol19s:bleecker.street',
+                topic: 'Tasty tasty cheese',
+                world_readable: true,
+            }}
+        />
+    </InviteTile>
+);

src/components/InviteTile.tsx

@@ -0,0 +1,120 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React, { useState } from 'react';
+
+import './InviteTile.scss';
+
+import Tile from './Tile';
+import LinkButton from './LinkButton';
+import Button from './Button';
+import ClientSelection from './ClientSelection';
+import { Client, ClientKind } from '../clients/types';
+import { SafeLink } from '../parser/types';
+import TextButton from './TextButton';
+
+interface IProps {
+    children?: React.ReactNode;
+    client: Client | null;
+    link: SafeLink;
+}
+
+const InviteTile: React.FC<IProps> = ({ children, client, link }: IProps) => {
+    const [showAdvanced, setShowAdvanced] = useState(false);
+    let invite: React.ReactNode;
+    let advanced: React.ReactNode;
+
+    if (client === null) {
+        invite = showAdvanced ? null : (
+            <Button onClick={(): void => setShowAdvanced(!showAdvanced)}>
+                Accept invite
+            </Button>
+        );
+    } else {
+        let inviteUseString: string;
+
+        switch (client.kind) {
+            case ClientKind.LINKED_CLIENT:
+                invite = (
+                    <LinkButton href={client.toUrl(link).toString()}>
+                        Accept invite
+                    </LinkButton>
+                );
+                inviteUseString = `Accepting will open this link in ${client.name}.`;
+                break;
+            case ClientKind.TEXT_CLIENT:
+                // TODO: copy to clipboard
+                invite = <p>{client.toInviteString(link)}</p>;
+                navigator.clipboard?.writeText(client.copyString(link));
+                inviteUseString = `These are instructions for ${client.name}.`;
+                break;
+        }
+
+        const advancedToggle = (
+            <p>
+                {inviteUseString}
+                <TextButton
+                    onClick={(): void => setShowAdvanced(!showAdvanced)}
+                >
+                    Change client
+                </TextButton>
+            </p>
+        );
+
+        invite = (
+            <>
+                {invite}
+                {advancedToggle}
+            </>
+        );
+    }
+
+    if (showAdvanced) {
+        if (client === null) {
+            advanced = (
+                <>
+                    <hr />
+                    <h2>Almost done!</h2>
+                    <p>Great, pick a client below to confirm and continue</p>
+                    <ClientSelection link={link} />
+                </>
+            );
+        } else {
+            advanced = (
+                <>
+                    <hr />
+                    <h4>Change app</h4>
+                    <ClientSelection link={link} />
+                </>
+            );
+        }
+    }
+
+    advanced = advanced ? (
+        <div className="inviteTileClientSelection">{advanced}</div>
+    ) : null;
+    return (
+        <>
+            <Tile className="inviteTile">
+                {children}
+                {invite}
+                {advanced}
+            </Tile>
+        </>
+    );
+};
+
+export default InviteTile;

src/components/InvitingClientTile.stories.tsx

@@ -0,0 +1,23 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React from 'react';
+
+import ClientTile from './InvitingClientTile';
+
+export default { title: 'ClientTile' };
+
+export const Element = <ClientTile clientName={'element.io'} />;

src/components/InvitingClientTile.tsx

@@ -0,0 +1,58 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React from 'react';
+import Tile from './Tile';
+
+import { clientMap } from '../clients';
+import './MatrixTile.scss';
+
+interface IProps {
+    clientName: string;
+}
+
+const InvitingClientTile: React.FC<IProps> = ({ clientName }: IProps) => {
+    const client = clientMap[clientName];
+
+    if (!client) {
+        return (
+            <Tile className="matrixTile">
+                {/* TODO: add gh link */}
+                <p>
+                    The client that created this link "{clientName}" is not a
+                    recognised client. If this is a mistake and you'd like a
+                    nice advertisement for it here please{' '}
+                    <a href="https://github.com/matrix-org/matrix.to">
+                        open a pr
+                    </a>
+                    .
+                </p>
+            </Tile>
+        );
+    }
+
+    return (
+        <Tile className="matrixTile">
+            <img src={client.logo} alt={client.name} />
+            <h2>
+                Invite created with <a href={client.homepage}>{client.name}</a>
+            </h2>
+            <div>{client.description}</div>
+        </Tile>
+    );
+};
+
+export default InvitingClientTile;

src/components/LinkButton.tsx

@@ -0,0 +1,34 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React from 'react';
+import classnames from 'classnames';
+
+import './Button.scss';
+
+interface IProps extends React.LinkHTMLAttributes<HTMLElement> {}
+
+const LinkButton: React.FC<IProps> = ({
+    className,
+    children,
+    ...props
+}: IProps) => (
+    <a className={classnames('button', className)} {...props}>
+        {children}
+    </a>
+);
+
+export default LinkButton;

src/components/LinkPreview.tsx

@@ -0,0 +1,193 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React, { useState, useEffect, useContext } from 'react';
+import { getEvent, client } from '../matrix-cypher';
+
+import { RoomPreviewWithTopic } from './RoomPreview';
+import InviteTile from './InviteTile';
+import { SafeLink, LinkKind } from '../parser/types';
+import UserPreview, { WrappedInviterPreview } from './UserPreview';
+import EventPreview from './EventPreview';
+import GroupPreview from './GroupPreview';
+import HomeserverOptions from './HomeserverOptions';
+import DefaultPreview from './DefaultPreview';
+import Toggle from './Toggle';
+import { clientMap } from '../clients';
+import {
+    getRoomFromId,
+    getRoomFromAlias,
+    getRoomFromPermalink,
+    getUser,
+    getGroup,
+} from '../utils/cypher-wrapper';
+import { ClientContext } from '../contexts/ClientContext';
+import useHSs from '../utils/getHS';
+
+interface IProps {
+    link: SafeLink;
+}
+
+const invite = async ({
+    clientAddress,
+    link,
+}: {
+    clientAddress: string;
+    link: SafeLink;
+}): Promise<JSX.Element> => {
+    // TODO: replace with client fetch
+    switch (link.kind) {
+        case LinkKind.Alias:
+            return (
+                <RoomPreviewWithTopic
+                    room={
+                        await getRoomFromAlias(clientAddress, link.identifier)
+                    }
+                />
+            );
+
+        case LinkKind.RoomId:
+            return (
+                <RoomPreviewWithTopic
+                    room={await getRoomFromId(clientAddress, link.identifier)}
+                />
+            );
+
+        case LinkKind.UserId:
+            return (
+                <UserPreview
+                    user={await getUser(clientAddress, link.identifier)}
+                    userId={link.identifier}
+                />
+            );
+
+        case LinkKind.Permalink:
+            return (
+                <EventPreview
+                    room={await getRoomFromPermalink(clientAddress, link)}
+                    event={
+                        await getEvent(
+                            await client(clientAddress),
+                            link.roomLink,
+                            link.eventId
+                        )
+                    }
+                />
+            );
+
+        case LinkKind.GroupId:
+            return (
+                <GroupPreview
+                    group={await getGroup(clientAddress, link.identifier)}
+                    groupId={link.identifier}
+                />
+            );
+
+        default:
+            // Todo Implement events
+            return <></>;
+    }
+};
+
+interface PreviewProps extends IProps {
+    client: string;
+}
+
+const Preview: React.FC<PreviewProps> = ({ link, client }: PreviewProps) => {
+    const [content, setContent] = useState(<DefaultPreview link={link} />);
+
+    // TODO: support multiple clients with vias
+    useEffect(() => {
+        (async (): Promise<void> =>
+            setContent(
+                await invite({
+                    clientAddress: client,
+                    link,
+                })
+            ))();
+    }, [link, client]);
+
+    return content;
+};
+
+const LinkPreview: React.FC<IProps> = ({ link }: IProps) => {
+    let content: JSX.Element;
+    const [showHSOptions, setShowHSOPtions] = useState(false);
+
+    const hses = useHSs({ link });
+
+    if (!hses.length) {
+        content = (
+            <>
+                <DefaultPreview link={link} />
+                <Toggle
+                    checked={showHSOptions}
+                    onChange={(): void => setShowHSOPtions(!showHSOptions)}
+                >
+                    <span>
+                        About&nbsp;
+                        <span className="matrixIdentifier">
+                            {link.identifier}
+                        </span>
+                    </span>
+                </Toggle>
+            </>
+        );
+        if (showHSOptions) {
+            content = (
+                <>
+                    {content}
+                    <HomeserverOptions link={link} />
+                </>
+            );
+        }
+    } else {
+        content = <Preview link={link} client={hses[0]} />;
+    }
+
+    const [{ clientId }] = useContext(ClientContext);
+
+    // Select which client to link to
+    const displayClientId = clientId
+        ? clientId
+        : link.arguments.client
+        ? link.arguments.client
+        : null;
+
+    const client = displayClientId ? clientMap[displayClientId] : null;
+
+    const sharer = link.arguments.sharer ? (
+        <WrappedInviterPreview
+            link={{
+                kind: LinkKind.UserId,
+                identifier: link.arguments.sharer,
+                arguments: { vias: [], originalParams: new URLSearchParams() },
+                originalLink: '',
+            }}
+        />
+    ) : (
+        <p style={{ margin: '0 0 10px 0' }}>You're invited to join</p>
+    );
+
+    return (
+        <InviteTile client={client} link={link}>
+            {sharer}
+            {content}
+        </InviteTile>
+    );
+};
+
+export default LinkPreview;

src/components/MatrixTile.scss

@@ -0,0 +1,22 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+.matrixTile {
+    background: none;
+    row-gap: 8px;
+
+    padding: 0 40px;
+}

src/components/MatrixTile.stories.tsx

@@ -0,0 +1,23 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React from 'react';
+
+import MatrixTile from './MatrixTile';
+
+export default { title: 'MatrixTile' };
+
+export const Default: React.FC = () => <MatrixTile />;

src/components/MatrixTile.tsx

@@ -0,0 +1,51 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React from 'react';
+import Tile from './Tile';
+
+import logo from '../imgs/matrix-logo.svg';
+
+import './MatrixTile.scss';
+
+interface IProps {
+    isLink?: boolean;
+}
+
+const MatrixTile: React.FC<IProps> = ({ isLink }: IProps) => {
+    const copy = isLink ? (
+        <div>
+            This invite uses <a href="https://matrix.org">Matrix</a>, an open
+            network for secure, decentralized communication.
+        </div>
+    ) : (
+        <div>
+            Matrix.to is a stateless URL redirecting service for the{' '}
+            <a href="https://matrix.org">Matrix</a> ecosystem.
+        </div>
+    );
+
+    return (
+        <div>
+            <Tile className="matrixTile">
+                <img src={logo} alt="matrix-logo" />
+                {copy}
+            </Tile>
+        </div>
+    );
+};
+
+export default MatrixTile;

src/components/RoomPreview.scss

@@ -14,19 +14,17 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-export class ConnectionError extends Error {
-    constructor(message, isTimeout) {
-        super(message || "ConnectionError");
-        this.isTimeout = isTimeout;
+.roomPreview {
+    > .avatar {
+        margin-bottom: 8px;
     }
 
-    get name() {
-        return "ConnectionError";
+    > h1 {
+        font-size: 24px;
+        margin-bottom: 4px;
     }
 }
 
-export class AbortError extends Error {
-    get name() {
-        return "AbortError";
-    }
+.roomTopic {
+    padding-top: 8px;
 }

src/components/RoomPreview.tsx

@@ -0,0 +1,60 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React from 'react';
+import { Room } from '../matrix-cypher';
+
+import { RoomAvatar } from './Avatar';
+
+import './RoomPreview.scss';
+
+interface IProps {
+    room: Room;
+}
+
+const RoomPreview: React.FC<IProps> = ({ room }: IProps) => {
+    const roomAlias = room.canonical_alias
+        ? room.canonical_alias
+        : room.aliases
+        ? room.aliases[0]
+        : room.room_id;
+    const members =
+        room.num_joined_members > 0 ? (
+            <p>{room.num_joined_members.toLocaleString()} members</p>
+        ) : null;
+    return (
+        <div className="roomPreview">
+            <RoomAvatar room={room} />
+            <h1 className="matrixIdentifier">
+                {room.name ? room.name : roomAlias}
+            </h1>
+            {members}
+            <p className="matrixIdentifier">{roomAlias}</p>
+        </div>
+    );
+};
+
+export const RoomPreviewWithTopic: React.FC<IProps> = ({ room }: IProps) => {
+    const topic = room.topic ? <p className="roomTopic">{room.topic}</p> : null;
+    return (
+        <>
+            <RoomPreview room={room} />
+            {topic}
+        </>
+    );
+};
+
+export default RoomPreview;