66 lines
1.9 KiB
TypeScript
66 lines
1.9 KiB
TypeScript
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/*
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Copyright 2020 The Matrix.org Foundation C.I.C.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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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
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import React from "react";
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import { Client, discoverServer } from "cypher";
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import { prefixFetch } from "cypher/src/utils/fetch";
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type State = {
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clientURL: string;
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client: Client;
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}[];
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// Actions are a discriminated union.
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export enum ActionTypes {
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AddClient = "ADD_CLIENT",
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RemoveClient = "REMOVE_CLIENT",
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}
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export interface AddClient {
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action: ActionTypes.AddClient;
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clientURL: string;
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}
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export interface RemoveClient {
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action: ActionTypes.RemoveClient;
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clientURL: string;
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}
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export type Action = AddClient | RemoveClient;
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export const INITIAL_STATE: State = [];
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export const reducer = async (state: State, action: Action): Promise<State> => {
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switch (action.action) {
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case ActionTypes.AddClient:
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return state.filter((x) => x.clientURL !== action.clientURL);
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case ActionTypes.RemoveClient:
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if (!state.filter((x) => x.clientURL === action.clientURL)) {
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const resolvedURL = await discoverServer(action.clientURL);
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state.push({
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clientURL: resolvedURL,
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client: prefixFetch(resolvedURL),
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});
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}
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}
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return state;
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};
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// The null is a hack to make the type checker happy
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// create context does not need an argument
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export default React.createContext<typeof reducer | null>(null);
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