Create Android app for Khoj (#991)

Use bubblewrap to publish the Khoj Progressive Web App (PWA) as a Trusted Web Activity (TWA) to the Android Play Store

.gitignore

@@ -42,3 +42,13 @@ src/interface/obsidian/main.js
 
 # obsidian
 data.json
+
+# Android
+src/interface/android/.gradle
+src/interface/android/app/build
+src/interface/android/build
+src/interface/android/*.aab
+src/interface/android/*.apk
+src/interface/android/*.apk.idsig
+src/interface/android/*.keystore
+src/interface/android/local.properties

src/interface/android/app/build.gradle

@@ -0,0 +1,211 @@
+/*
+ * Copyright 2019 Google Inc.
+ *
+ * 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 groovy.xml.MarkupBuilder
+
+plugins {
+    id 'com.android.application'
+}
+
+def twaManifest = [
+    applicationId: 'dev.khoj.app',
+    hostName: 'app.khoj.dev', // The domain being opened in the TWA.
+    launchUrl: '/', // The start path for the TWA. Must be relative to the domain.
+    name: 'Khoj AI', // The application name.
+    launcherName: 'Khoj', // The name shown on the Android Launcher.
+    themeColor: '#FFFFFF', // The color used for the status bar.
+    themeColorDark: '#000000', // The color used for the dark status bar.
+    navigationColor: '#000000', // The color used for the navigation bar.
+    navigationColorDark: '#000000', // The color used for the dark navbar.
+    navigationDividerColor: '#000000', // The navbar divider color.
+    navigationDividerColorDark: '#000000', // The dark navbar divider color.
+    backgroundColor: '#FFFFFF', // The color used for the splash screen background.
+    enableNotifications: true, // Set to true to enable notification delegation.
+    // Every shortcut must include the following fields:
+    // - name: String that will show up in the shortcut.
+    // - short_name: Shorter string used if |name| is too long.
+    // - url: Absolute path of the URL to launch the app with (e.g '/create').
+    // - icon: Name of the resource in the drawable folder to use as an icon.
+    shortcuts: [],
+    // The duration of fade out animation in milliseconds to be played when removing splash screen.
+    splashScreenFadeOutDuration: 300,
+    generatorApp: 'bubblewrap-cli', // Application that generated the Android Project
+    // The fallback strategy for when Trusted Web Activity is not available. Possible values are
+    // 'customtabs' and 'webview'.
+    fallbackType: 'customtabs',
+    enableSiteSettingsShortcut: 'true',
+    orientation: 'natural',
+]
+
+android {
+    compileSdkVersion 35
+    namespace "dev.khoj.app"
+    defaultConfig {
+        applicationId "dev.khoj.app"
+        minSdkVersion 19
+        targetSdkVersion 35
+        versionCode 4
+        versionName "4"
+
+        // The name for the application
+        resValue "string", "appName", twaManifest.name
+
+        // The name for the application on the Android Launcher
+        resValue "string", "launcherName", twaManifest.launcherName
+
+        // The URL that will be used when launching the TWA from the Android Launcher
+        def launchUrl = "https://" + twaManifest.hostName + twaManifest.launchUrl
+        resValue "string", "launchUrl", launchUrl
+
+
+            // The URL the Web Manifest for the Progressive Web App that the TWA points to. This
+            // is used by Chrome OS and Meta Quest to open the Web version of the PWA instead of
+            // the TWA, as it will probably give a better user experience for non-mobile devices.
+            resValue "string", "webManifestUrl", 'https://app.khoj.dev/static/khoj.webmanifest'
+
+
+
+            // This is used by Meta Quest.
+            resValue "string", "fullScopeUrl", 'https://app.khoj.dev/'
+
+
+
+
+        // The hostname is used when building the intent-filter, so the TWA is able to
+        // handle Intents to open host url of the application.
+        resValue "string", "hostName", twaManifest.hostName
+
+        // This attribute sets the status bar color for the TWA. It can be either set here or in
+        // `res/values/colors.xml`. Setting in both places is an error and the app will not
+        // compile. If not set, the status bar color defaults to #FFFFFF - white.
+        resValue "color", "colorPrimary", twaManifest.themeColor
+
+        // This attribute sets the dark status bar color for the TWA. It can be either set here or in
+        // `res/values/colors.xml`. Setting in both places is an error and the app will not
+        // compile. If not set, the status bar color defaults to #000000 - white.
+        resValue "color", "colorPrimaryDark", twaManifest.themeColorDark
+
+        // This attribute sets the navigation bar color for the TWA. It can be either set here or
+        // in `res/values/colors.xml`. Setting in both places is an error and the app will not
+        // compile. If not set, the navigation bar color defaults to #FFFFFF - white.
+        resValue "color", "navigationColor", twaManifest.navigationColor
+
+        // This attribute sets the dark navigation bar color for the TWA. It can be either set here
+        // or in `res/values/colors.xml`. Setting in both places is an error and the app will not
+        // compile. If not set, the navigation bar color defaults to #000000 - black.
+        resValue "color", "navigationColorDark", twaManifest.navigationColorDark
+
+        // This attribute sets the navbar divider color for the TWA. It can be either
+        // set here or in `res/values/colors.xml`. Setting in both places is an error and the app
+        // will not compile. If not set, the divider color defaults to #00000000 - transparent.
+        resValue "color", "navigationDividerColor", twaManifest.navigationDividerColor
+
+        // This attribute sets the dark navbar divider color for the TWA. It can be either
+        // set here or in `res/values/colors.xml`. Setting in both places is an error and the
+        //app will not compile. If not set, the divider color defaults to #000000 - black.
+        resValue "color", "navigationDividerColorDark", twaManifest.navigationDividerColorDark
+
+        // Sets the color for the background used for the splash screen when launching the
+        // Trusted Web Activity.
+        resValue "color", "backgroundColor", twaManifest.backgroundColor
+
+        // Defines a provider authority for the Splash Screen
+        resValue "string", "providerAuthority", twaManifest.applicationId + '.fileprovider'
+
+        // The enableNotification resource is used to enable or disable the
+        // TrustedWebActivityService, by changing the android:enabled and android:exported
+        // attributes
+        resValue "bool", "enableNotification", twaManifest.enableNotifications.toString()
+
+        twaManifest.shortcuts.eachWithIndex { shortcut, index ->
+            resValue "string", "shortcut_name_$index", "$shortcut.name"
+            resValue "string", "shortcut_short_name_$index", "$shortcut.short_name"
+        }
+
+        // The splashScreenFadeOutDuration resource is used to set the duration of fade out animation in milliseconds
+        // to be played when removing splash screen. The default is 0 (no animation).
+        resValue "integer", "splashScreenFadeOutDuration", twaManifest.splashScreenFadeOutDuration.toString()
+
+        resValue "string", "generatorApp", twaManifest.generatorApp
+
+        resValue "string", "fallbackType", twaManifest.fallbackType
+
+        resValue "bool", "enableSiteSettingsShortcut", twaManifest.enableSiteSettingsShortcut
+        resValue "string", "orientation", twaManifest.orientation
+    }
+    buildTypes {
+        release {
+            minifyEnabled true
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    lintOptions {
+        checkReleaseBuilds false
+    }
+}
+
+task generateShorcutsFile {
+    assert twaManifest.shortcuts.size() < 5, "You can have at most 4 shortcuts."
+    twaManifest.shortcuts.eachWithIndex { s, i ->
+        assert s.name != null, 'Missing `name` in shortcut #' + i
+        assert s.short_name != null, 'Missing `short_name` in shortcut #' + i
+        assert s.url != null, 'Missing `icon` in shortcut #' + i
+        assert s.icon != null, 'Missing `url` in shortcut #' + i
+    }
+
+    def shortcutsFile = new File("$projectDir/src/main/res/xml", "shortcuts.xml")
+
+    def xmlWriter = new StringWriter()
+    def xmlMarkup = new MarkupBuilder(new IndentPrinter(xmlWriter, "    ", true))
+
+    xmlMarkup
+        .'shortcuts'('xmlns:android': 'http://schemas.android.com/apk/res/android') {
+            twaManifest.shortcuts.eachWithIndex { s, i ->
+                'shortcut'(
+                        'android:shortcutId': 'shortcut' + i,
+                        'android:enabled': 'true',
+                        'android:icon': '@drawable/' + s.icon,
+                        'android:shortcutShortLabel': '@string/shortcut_short_name_' + i,
+                        'android:shortcutLongLabel': '@string/shortcut_name_' + i) {
+                    'intent'(
+                            'android:action': 'android.intent.action.MAIN',
+                            'android:targetPackage': twaManifest.applicationId,
+                            'android:targetClass': twaManifest.applicationId + '.LauncherActivity',
+                            'android:data': s.url)
+                    'categories'('android:name': 'android.intent.category.LAUNCHER')
+                }
+            }
+        }
+    shortcutsFile.text = xmlWriter.toString() + '\n'
+}
+
+preBuild.dependsOn(generateShorcutsFile)
+
+repositories {
+
+}
+
+dependencies {
+    implementation fileTree(include: ['*.jar'], dir: 'libs')
+
+        implementation 'com.google.androidbrowserhelper:locationdelegation:1.1.1'
+
+        implementation 'com.google.androidbrowserhelper:androidbrowserhelper:2.5.0'
+
+}

src/interface/android/app/src/main/AndroidManifest.xml

@@ -0,0 +1,188 @@
+<!--
+    Copyright 2019 Google Inc. All Rights Reserved.
+
+     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.
+-->
+
+<!-- The "package" attribute is rewritten by the Gradle build with the value of applicationId.
+     It is still required here, as it is used to derive paths, for instance when referring
+     to an Activity by ".MyActivity" instead of the full name. If more Activities are added to the
+     application, the package attribute will need to reflect the correct path in order to use
+     the abbreviated format. -->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="dev.khoj.app">
+
+
+        <uses-permission android:name="android.permission.POST_NOTIFICATIONS"/>
+
+
+
+
+
+
+
+
+    <application
+        android:name="Application"
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/appName"
+
+        android:manageSpaceActivity="com.google.androidbrowserhelper.trusted.ManageDataLauncherActivity"
+
+        android:supportsRtl="true"
+        android:theme="@android:style/Theme.Translucent.NoTitleBar">
+
+        <meta-data
+            android:name="asset_statements"
+            android:resource="@string/assetStatements" />
+
+
+            <meta-data
+                android:name="web_manifest_url"
+                android:value="@string/webManifestUrl" />
+
+
+        <meta-data
+            android:name="twa_generator"
+            android:value="@string/generatorApp" />
+
+
+
+
+
+
+            <activity android:name="com.google.androidbrowserhelper.trusted.ManageDataLauncherActivity">
+            <meta-data
+                android:name="android.support.customtabs.trusted.MANAGE_SPACE_URL"
+                android:value="@string/launchUrl" />
+            </activity>
+
+
+        <activity android:name="LauncherActivity"
+            android:alwaysRetainTaskState="true"
+            android:label="@string/launcherName"
+            android:exported="true">
+            <meta-data android:name="android.support.customtabs.trusted.DEFAULT_URL"
+                android:value="@string/launchUrl" />
+
+            <meta-data
+                android:name="android.support.customtabs.trusted.STATUS_BAR_COLOR"
+                android:resource="@color/colorPrimary" />
+
+            <meta-data
+                android:name="android.support.customtabs.trusted.STATUS_BAR_COLOR_DARK"
+                android:resource="@color/colorPrimaryDark" />
+
+            <meta-data
+                android:name="android.support.customtabs.trusted.NAVIGATION_BAR_COLOR"
+                android:resource="@color/navigationColor" />
+
+            <meta-data
+                android:name="android.support.customtabs.trusted.NAVIGATION_BAR_COLOR_DARK"
+                android:resource="@color/navigationColorDark" />
+
+            <meta-data
+                android:name="androix.browser.trusted.NAVIGATION_BAR_DIVIDER_COLOR"
+                android:resource="@color/navigationDividerColor" />
+
+            <meta-data
+                android:name="androix.browser.trusted.NAVIGATION_BAR_DIVIDER_COLOR_DARK"
+                android:resource="@color/navigationDividerColorDark" />
+
+            <meta-data android:name="android.support.customtabs.trusted.SPLASH_IMAGE_DRAWABLE"
+                android:resource="@drawable/splash"/>
+
+            <meta-data android:name="android.support.customtabs.trusted.SPLASH_SCREEN_BACKGROUND_COLOR"
+                android:resource="@color/backgroundColor"/>
+
+            <meta-data android:name="android.support.customtabs.trusted.SPLASH_SCREEN_FADE_OUT_DURATION"
+                android:value="@integer/splashScreenFadeOutDuration"/>
+
+            <meta-data android:name="android.support.customtabs.trusted.FILE_PROVIDER_AUTHORITY"
+                android:value="@string/providerAuthority"/>
+
+            <meta-data android:name="android.app.shortcuts" android:resource="@xml/shortcuts" />
+
+            <meta-data android:name="android.support.customtabs.trusted.FALLBACK_STRATEGY"
+                android:value="@string/fallbackType" />
+
+
+
+
+
+            <meta-data android:name="android.support.customtabs.trusted.SCREEN_ORIENTATION"
+                android:value="@string/orientation"/>
+
+
+
+
+
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+
+            <intent-filter android:autoVerify="true">
+                <action android:name="android.intent.action.VIEW"/>
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE"/>
+                <data android:scheme="https"
+                    android:host="@string/hostName"/>
+            </intent-filter>
+
+
+        </activity>
+
+        <activity android:name="com.google.androidbrowserhelper.trusted.FocusActivity" />
+
+        <activity android:name="com.google.androidbrowserhelper.trusted.WebViewFallbackActivity"
+            android:configChanges="orientation|screenSize" />
+
+        <provider
+            android:name="androidx.core.content.FileProvider"
+            android:authorities="@string/providerAuthority"
+            android:grantUriPermissions="true"
+            android:exported="false">
+            <meta-data
+                android:name="android.support.FILE_PROVIDER_PATHS"
+                android:resource="@xml/filepaths" />
+        </provider>
+
+        <service
+            android:name=".DelegationService"
+            android:enabled="@bool/enableNotification"
+            android:exported="@bool/enableNotification">
+
+
+                <meta-data
+                    android:name="android.support.customtabs.trusted.SMALL_ICON"
+                    android:resource="@drawable/ic_notification_icon" />
+
+
+            <intent-filter>
+                <action android:name="android.support.customtabs.trusted.TRUSTED_WEB_ACTIVITY_SERVICE"/>
+                <category android:name="android.intent.category.DEFAULT"/>
+            </intent-filter>
+        </service>
+
+
+            <activity android:name="com.google.androidbrowserhelper.trusted.NotificationPermissionRequestActivity" />
+
+
+
+            <activity android:name=
+        "com.google.androidbrowserhelper.locationdelegation.PermissionRequestActivity"/>
+
+    </application>
+</manifest>

src/interface/android/app/src/main/java/dev/khoj/app/Application.java

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2020 Google Inc.
+ *
+ * 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.
+ */
+package dev.khoj.app;
+
+
+
+public class Application extends android.app.Application {
+
+
+
+  @Override
+  public void onCreate() {
+      super.onCreate();
+
+  }
+}

src/interface/android/app/src/main/java/dev/khoj/app/DelegationService.java

@@ -0,0 +1,17 @@
+package dev.khoj.app;
+
+
+import com.google.androidbrowserhelper.locationdelegation.LocationDelegationExtraCommandHandler;
+
+
+public class DelegationService extends
+        com.google.androidbrowserhelper.trusted.DelegationService {
+    @Override
+    public void onCreate() {
+        super.onCreate();
+
+
+            registerExtraCommandHandler(new LocationDelegationExtraCommandHandler());
+
+    }
+}

src/interface/android/app/src/main/java/dev/khoj/app/LauncherActivity.java

@@ -0,0 +1,54 @@
+/*
+ * Copyright 2020 Google Inc.
+ *
+ * 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.
+ */
+package dev.khoj.app;
+
+import android.content.pm.ActivityInfo;
+import android.net.Uri;
+import android.os.Build;
+import android.os.Bundle;
+
+
+
+public class LauncherActivity
+        extends com.google.androidbrowserhelper.trusted.LauncherActivity {
+
+
+
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        // Setting an orientation crashes the app due to the transparent background on Android 8.0
+        // Oreo and below. We only set the orientation on Oreo and above. This only affects the
+        // splash screen and Chrome will still respect the orientation.
+        // See https://github.com/GoogleChromeLabs/bubblewrap/issues/496 for details.
+        if (Build.VERSION.SDK_INT > Build.VERSION_CODES.O) {
+            setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
+        } else {
+            setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
+        }
+    }
+
+    @Override
+    protected Uri getLaunchingUrl() {
+        // Get the original launch Url.
+        Uri uri = super.getLaunchingUrl();
+
+
+
+        return uri;
+    }
+}

src/interface/android/app/src/main/res/drawable-anydpi/shortcut_legacy_background.xml

@@ -0,0 +1,25 @@
+<!--
+    Copyright 2020 Google Inc. All Rights Reserved.
+
+     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.
+-->
+<inset xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:inset="2dp">
+    <aapt:attr name="android:drawable">
+        <shape android:shape="oval">
+            <solid android:color="@color/shortcut_background" />
+            <size android:width="44dp" android:height="44dp" />
+        </shape>
+    </aapt:attr>
+</inset>

src/interface/android/app/src/main/res/raw/web_app_manifest.json

@@ -0,0 +1 @@
+{"name":"Khoj","short_name":"Khoj","display":"standalone","start_url":"/","description":"The open, personal AI for your digital brain. You can ask Khoj to draft a message, paint your imagination, find information on the internet and even answer questions from your documents.","theme_color":"#ffffff","background_color":"#ffffff","icons":[{"src":"/static/assets/icons/khoj_lantern_128x128.png","sizes":"128x128","type":"image/png"},{"src":"/static/assets/icons/khoj_lantern_256x256.png","sizes":"256x256","type":"image/png"}],"screenshots":[{"src":"/static/assets/samples/phone-remember-plan-sample.png","sizes":"419x900","type":"image/png","form_factor":"narrow","label":"Remember and Plan"},{"src":"/static/assets/samples/phone-browse-draw-sample.png","sizes":"419x900","type":"image/png","form_factor":"narrow","label":"Browse and Draw"},{"src":"/static/assets/samples/desktop-remember-plan-sample.png","sizes":"1260x742","type":"image/png","form_factor":"wide","label":"Remember and Plan"},{"src":"/static/assets/samples/desktop-browse-draw-sample.png","sizes":"1260x742","type":"image/png","form_factor":"wide","label":"Browse and Draw"}]}

src/interface/android/app/src/main/res/values/colors.xml

@@ -0,0 +1,18 @@
+<!--
+    Copyright 2020 Google Inc. All Rights Reserved.
+
+     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.
+-->
+<resources>
+    <color name="shortcut_background">#F5F5F5</color>
+</resources>

src/interface/android/app/src/main/res/values/strings.xml

@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+    Copyright 2021 Google Inc. All Rights Reserved.
+
+     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.
+-->
+<resources>
+
+
+  <!--
+    This variable below expresses the relationship between the app and the site,
+    as documented in the TWA documentation at
+    https://developers.google.com/web/updates/2017/10/using-twa#set_up_digital_asset_links_in_an_android_app
+    and is injected into the AndroidManifest.xml
+  -->
+  <string name="assetStatements">
+    [{
+        \"relation\": [\"delegate_permission/common.handle_all_urls\"],
+        \"target\": {
+            \"namespace\": \"web\",
+            \"site\": \"https://app.khoj.dev\"
+        }
+    }]
+
+  </string>
+</resources>

src/interface/android/app/src/main/res/xml/filepaths.xml

@@ -0,0 +1,18 @@
+<!--
+    Copyright 2019 Google Inc. All Rights Reserved.
+
+     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.
+-->
+<paths>
+    <files-path path="twa_splash/" name="twa_splash" />
+</paths>

src/interface/android/app/src/main/res/xml/shortcuts.xml

@@ -0,0 +1 @@
+<shortcuts xmlns:android='http://schemas.android.com/apk/res/android' />

src/interface/android/build.gradle

@@ -0,0 +1,42 @@
+/*
+ * Copyright 2019 Google Inc.
+ *
+ * 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.
+ */
+
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+
+buildscript {
+
+    repositories {
+        google()
+        mavenCentral()
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:8.7.2'
+
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+tasks.register('clean', Delete) {
+    delete rootProject.buildDir
+}

src/interface/android/gradle.properties

@@ -0,0 +1,14 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx1536m
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+android.useAndroidX=true

src/interface/android/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.9-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true

src/interface/android/gradlew

@@ -0,0 +1,249 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# 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
+#
+#      https://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.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"

src/interface/android/gradlew.bat

@@ -0,0 +1,92 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

src/interface/android/manifest-checksum.txt

@@ -0,0 +1 @@
+6ee1711cf4f745dafc80c1cc13c3025342a0f5da

src/interface/android/settings.gradle

@@ -0,0 +1 @@
+include ':app'

src/interface/android/twa-manifest.json

@@ -0,0 +1,55 @@
+{
+  "packageId": "dev.khoj.app",
+  "host": "app.khoj.dev",
+  "name": "Khoj AI",
+  "launcherName": "Khoj",
+  "display": "standalone",
+  "themeColor": "#FFFFFF",
+  "themeColorDark": "#000000",
+  "navigationColor": "#000000",
+  "navigationColorDark": "#000000",
+  "navigationDividerColor": "#000000",
+  "navigationDividerColorDark": "#000000",
+  "backgroundColor": "#FFFFFF",
+  "enableNotifications": true,
+  "startUrl": "/",
+  "iconUrl": "https://assets.khoj.dev/khoj_lantern_1200x1200.png",
+  "splashScreenFadeOutDuration": 300,
+  "signingKey": {
+    "path": "android.keystore",
+    "alias": "android"
+  },
+  "appVersionName": "4",
+  "appVersionCode": 4,
+  "shortcuts": [],
+  "generatorApp": "bubblewrap-cli",
+  "webManifestUrl": "https://app.khoj.dev/static/khoj.webmanifest",
+  "fallbackType": "customtabs",
+  "features": {
+    "locationDelegation": {
+      "enabled": true
+    }
+  },
+  "alphaDependencies": {
+    "enabled": false
+  },
+  "enableSiteSettingsShortcut": true,
+  "isChromeOSOnly": false,
+  "isMetaQuest": false,
+  "fullScopeUrl": "https://app.khoj.dev/",
+  "minSdkVersion": 19,
+  "orientation": "natural",
+  "fingerprints": [
+    {
+      "name": "signing",
+      "value": "CC:98:4A:0A:F1:CC:84:26:AC:02:86:49:AA:69:64:B9:5E:63:A3:EF:18:56:EA:CA:13:C1:3A:15:CA:49:77:46"
+    },
+    {
+      "name": "upload",
+      "value": "D4:5A:6F:6C:18:28:D2:1C:78:27:92:C6:AC:DB:4C:12:C4:52:A1:88:9B:A1:F5:67:D1:22:FE:A0:0F:B1:AE:92"
+    }
+  ],
+  "additionalTrustedOrigins": [],
+  "retainedBundles": [],
+  "appVersion": "4"
+}

src/interface/web/public/khoj.webmanifest

@@ -1,11 +1,18 @@
 {
-    "name": "Khoj",
+    "id": "https://app.khoj.dev",
+    "name": "Khoj AI - Get Answers, Create Anything",
     "short_name": "Khoj",
     "display": "standalone",
     "start_url": "/",
-    "description": "The open, personal AI for your digital brain. You can ask Khoj to draft a message, paint your imagination, find information on the internet and even answer questions from your documents.",
+    "scope": "/",
+    "description": "Khoj is your open, personal AI. Gets answers from the internet and your documents. Quickly draft messages, summarize any information, generate beautiful paintings, create personal agents and do deep research.",
+    "categories": ["productivity", "utilities", "personalization", "education"],
     "theme_color": "#ffffff",
     "background_color": "#ffffff",
+    "orientation": "natural",
+    "launch_handler": {
+        "client_mode": ["navigate-existing", "auto"]
+    },
     "icons": [
         {
             "src": "/static/assets/icons/khoj_lantern_128x128.png",
@@ -16,6 +23,24 @@
             "src": "/static/assets/icons/khoj_lantern_256x256.png",
             "sizes": "256x256",
             "type": "image/png"
+        },
+        {
+            "src": "/static/assets/icons/khoj_lantern_512x512.png",
+            "sizes": "512x512",
+            "type": "image/png",
+            "purpose": "any"
+        },
+        {
+            "src": "/static/assets/icons/khoj_lantern_512x512.png",
+            "sizes": "512x512",
+            "type": "image/png",
+            "purpose": "maskable"
+        },
+        {
+            "src": "/static/assets/icons/khoj_lantern_1200x1200.png",
+            "sizes": "1200x1200",
+            "type": "image/png",
+            "purpose": "any"
         }
     ],
     "screenshots": [