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Added YouTube summarizer app
2 parents bac662b + 31f41e4 commit e2f8874

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‎.github/workflows/android-leap-chat-test.yml‎

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branches: [ main ]
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paths:
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- 'Android/LeapChat/**'
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- 'Android/YouTubeSummarizer/**'
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- '.github/workflows/android-leap-chat-test.yml'
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pull_request:
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branches: [ main ]
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paths:
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- 'Android/LeapChat/**'
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- 'Android/YouTubeSummarizer/**'
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- '.github/workflows/android-leap-chat-test.yml'
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workflow_dispatch:
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--device model=MediumPhone.arm,version=36,locale=en,orientation=portrait \
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--project liquid-leap
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unit-test-youtube-summarizer:
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runs-on: ubuntu-24.04
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steps:
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- uses: actions/checkout@v6
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with:
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persist-credentials: false
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- name: Set up JDK 21
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uses: actions/setup-java@v5
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with:
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java-version: '21'
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distribution: 'temurin'
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- name: Set up Gradle
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uses: gradle/actions/setup-gradle@50e97c2cd7a37755bbfafc9c5b7cafaece252f6e # v6.1.0
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- name: Run YouTubeSummarizer unit tests
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run: cd Android/YouTubeSummarizer && ./gradlew :app:test

‎Android/YouTubeSummarizer/.gitignore‎

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# Add local.properties to gitignore
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local.properties
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# Gradle
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.gradle/
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build/
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# Android Studio
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.idea/
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.kotlin/
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*.iml
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*.iws
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*.ipr
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captures/
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.externalNativeBuild/
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.cxx/
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# Signing configs
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*.jks
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*.keystore
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# Generated files
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app/release/

‎Android/YouTubeSummarizer/README.md‎

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# tl;dw
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TLDW (Too Long Didn't Watch) is a summary generation app for YouTube videos.
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# Demo
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https://github.com/user-attachments/assets/0ba2de47-b673-4c53-b1fa-367dce514fe7
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‎Android/YouTubeSummarizer/app/build.gradle.kts‎

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plugins {
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alias(libs.plugins.android.application)
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alias(libs.plugins.kotlin.android)
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alias(libs.plugins.kotlin.compose)
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alias(libs.plugins.ktfmt)
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}
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kotlin { jvmToolchain(17) }
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ktfmt { googleStyle() }
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android {
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namespace = "com.tldw.app"
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compileSdk = 36
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defaultConfig {
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applicationId = "com.tldw.app"
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minSdk = 31
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targetSdk = 36
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versionCode = 1
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versionName = "1.0"
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}
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buildTypes {
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release {
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isMinifyEnabled = false
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proguardFiles(getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro")
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}
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}
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buildFeatures { compose = true }
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}
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dependencies {
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implementation(libs.androidx.core.ktx)
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implementation(libs.androidx.lifecycle.runtime.ktx)
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implementation(libs.androidx.lifecycle.runtime.compose)
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implementation(libs.androidx.lifecycle.viewmodel.compose)
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implementation(libs.androidx.activity.compose)
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implementation(platform(libs.androidx.compose.bom))
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implementation(libs.androidx.ui)
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implementation(libs.androidx.ui.graphics)
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implementation(libs.androidx.ui.tooling.preview)
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implementation(libs.androidx.material3)
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implementation(libs.androidx.material.icons.extended)
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implementation(libs.kotlinx.coroutines.android)
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implementation(libs.okhttp)
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implementation(libs.gson)
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implementation(libs.leap.sdk.android)
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implementation(libs.leap.model.downloader)
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implementation(libs.coil.compose)
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implementation(libs.compose.markdown)
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debugImplementation(libs.androidx.ui.tooling)
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debugImplementation(libs.androidx.ui.test.manifest)
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testImplementation(libs.junit)
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testImplementation(libs.kotlinx.coroutines.test)
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testImplementation(libs.mockito.kotlin)
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testImplementation(libs.okhttp.mockwebserver)
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}

‎Android/YouTubeSummarizer/app/proguard-rules.pro‎

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# Default ProGuard rules file
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# See http://proguard.sourceforge.net/manual/usage.html for usage

‎Android/YouTubeSummarizer/app/src/main/AndroidManifest.xml‎

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<?xml version="1.0" encoding="utf-8"?>
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<manifest xmlns:android="http://schemas.android.com/apk/res/android">
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<uses-permission android:name="android.permission.INTERNET" />
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<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
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<uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
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<uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
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<application
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android:allowBackup="true"
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android:icon="@mipmap/ic_launcher_round"
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android:label="@string/app_name"
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android:roundIcon="@mipmap/ic_launcher_round"
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android:supportsRtl="true"
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android:theme="@style/Theme.AppCompat.DayNight.NoActionBar">
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<activity
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android:name=".MainActivity"
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android:exported="true"
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android:label="@string/app_name"
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android:theme="@style/Theme.AppCompat.DayNight.NoActionBar">
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<!-- Main launcher intent -->
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<intent-filter>
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<action android:name="android.intent.action.MAIN" />
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<category android:name="android.intent.category.LAUNCHER" />
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</intent-filter>
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<!-- Share receiver: handles URLs shared from YouTube and other apps -->
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<intent-filter>
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<action android:name="android.intent.action.SEND" />
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<category android:name="android.intent.category.DEFAULT" />
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<data android:mimeType="text/plain" />
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</intent-filter>
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</activity>
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</application>
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</manifest>

‎Android/YouTubeSummarizer/app/src/main/java/com/tldw/app/Consts.kt‎

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package com.tldw.app
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import com.tldw.app.domain.model.VideoInfo
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object Consts {
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const val MODEL_NAME = "LFM2-350M"
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const val QUANTIZATION_SLUG = "Q8_0"
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const val TLDR_SYSTEM_PROMPT =
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"You are a helpful assistant. Given a YouTube video transcript, produce a concise TL;DR summary in 3-5 bullet points."
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const val MAX_TRANSCRIPT_CHARS = 4000
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val VIDEO_PRINTING_PRESS =
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VideoInfo(
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videoId = "Y0NopNiSkKw",
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title = "The Complete History of the Printing Press | How Printing Changed the World",
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channelName = "History of Innovations",
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durationSeconds = 595L,
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viewCount = 425L,
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)
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val VIDEO_SLEEP_SUPERPOWER =
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VideoInfo(
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videoId = "5MuIMqhT8DM",
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title = "Sleep Is Your Superpower | Matt Walker | TED",
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channelName = "TED",
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durationSeconds = 1158L,
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viewCount = 16505865L,
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)
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val VIDEO_BUILD_GPT =
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VideoInfo(
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videoId = "kCc8FmEb1nY",
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title = "Let's build GPT: from scratch, in code, spelled out.",
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channelName = "Andrej Karpathy",
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durationSeconds = 6980L,
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viewCount = 7168320L,
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)
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}

‎Android/YouTubeSummarizer/app/src/main/java/com/tldw/app/MainActivity.kt‎

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package com.tldw.app
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import android.content.Intent
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import android.os.Bundle
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import androidx.activity.ComponentActivity
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import androidx.activity.compose.setContent
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import androidx.activity.enableEdgeToEdge
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import androidx.activity.viewModels
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import androidx.compose.foundation.layout.Box
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import androidx.compose.foundation.layout.fillMaxSize
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import androidx.compose.material3.CircularProgressIndicator
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import androidx.compose.material3.Surface
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import androidx.compose.runtime.getValue
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import androidx.compose.ui.Alignment
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import androidx.compose.ui.Modifier
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import androidx.lifecycle.compose.collectAsStateWithLifecycle
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import com.tldw.app.data.repository.ModelRepositoryImpl
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import com.tldw.app.domain.usecase.CheckModelDownloadedUseCase
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import com.tldw.app.ui.modelscreen.ModelDownloadScreenRoute
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import com.tldw.app.ui.theme.TldwTheme
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import com.tldw.app.ui.transcriptscreen.TranscriptScreenRoute
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class MainActivity : ComponentActivity() {
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val mainViewModel: MainViewModel by viewModels {
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val repository = ModelRepositoryImpl(applicationContext)
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MainViewModelFactory(CheckModelDownloadedUseCase(repository))
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}
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override fun onCreate(savedInstanceState: Bundle?) {
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super.onCreate(savedInstanceState)
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enableEdgeToEdge()
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val sharedUrl = resolveSharedUrl(intent)
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setContent {
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TldwTheme {
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Surface(modifier = Modifier.fillMaxSize()) {
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val state by mainViewModel.state.collectAsStateWithLifecycle()
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when {
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state.isCheckingStatus -> {
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Box(contentAlignment = Alignment.Center, modifier = Modifier.fillMaxSize()) {
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CircularProgressIndicator()
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}
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}
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state.isModelDownloaded -> {
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TranscriptScreenRoute(
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sharedUrl = sharedUrl,
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onNavigateToModelDownload = { mainViewModel.checkStatus() },
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)
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}
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else -> {
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ModelDownloadScreenRoute(onModelReady = { mainViewModel.checkStatus() })
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}
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}
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}
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}
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}
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}
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private fun resolveSharedUrl(intent: Intent): String? =
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if (intent.action == Intent.ACTION_SEND && intent.type == "text/plain") {
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intent.getStringExtra(Intent.EXTRA_TEXT)
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} else {
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null
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}
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}

‎Android/YouTubeSummarizer/app/src/main/java/com/tldw/app/MainViewModel.kt‎

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package com.tldw.app
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import androidx.lifecycle.ViewModel
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import androidx.lifecycle.viewModelScope
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import com.tldw.app.domain.usecase.CheckModelDownloadedUseCase
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import kotlinx.coroutines.flow.MutableStateFlow
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import kotlinx.coroutines.flow.StateFlow
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import kotlinx.coroutines.flow.asStateFlow
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import kotlinx.coroutines.flow.update
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import kotlinx.coroutines.launch
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data class MainState(val isCheckingStatus: Boolean = true, val isModelDownloaded: Boolean = false)
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class MainViewModel(private val checkModelDownloadedUseCase: CheckModelDownloadedUseCase) :
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ViewModel() {
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private val _state = MutableStateFlow(MainState())
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val state: StateFlow<MainState> = _state.asStateFlow()
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init {
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checkStatus()
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}
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fun checkStatus() {
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viewModelScope.launch {
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_state.update { it.copy(isCheckingStatus = true) }
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try {
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val isDownloaded = checkModelDownloadedUseCase()
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_state.update { it.copy(isCheckingStatus = false, isModelDownloaded = isDownloaded) }
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} catch (e: Exception) {
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// If it fails, assume not downloaded or handle gracefully.
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_state.update { it.copy(isCheckingStatus = false, isModelDownloaded = false) }
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}
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}
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}
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}

‎Android/YouTubeSummarizer/app/src/main/java/com/tldw/app/MainViewModelFactory.kt‎

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package com.tldw.app
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import androidx.lifecycle.ViewModel
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import androidx.lifecycle.ViewModelProvider
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import com.tldw.app.domain.usecase.CheckModelDownloadedUseCase
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class MainViewModelFactory(private val checkModelDownloadedUseCase: CheckModelDownloadedUseCase) :
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ViewModelProvider.Factory {
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@Suppress("UNCHECKED_CAST")
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override fun <T : ViewModel> create(modelClass: Class<T>): T {
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if (modelClass.isAssignableFrom(MainViewModel::class.java)) {
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return MainViewModel(checkModelDownloadedUseCase) as T
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}
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throw IllegalArgumentException("Unknown ViewModel class")
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}
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}

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