feat: Initialize project with basic structure and dependencies
Sets up the foundational elements for the NewsCaster AI application. This includes: - Initializing the project with Vite and React. - Defining core types for articles and player state. - Configuring build tools and TypeScript. - Adding essential dependencies like React, Vite, and Google's Gemini API client. - Providing initial README instructions for running locally. - Setting up basic styling and structure in index.html. - Defining available voices and playback constants. - Implementing utility functions for audio handling.
This commit is contained in:
Anthony
24
.gitignore
vendored
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24
.gitignore
vendored
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# Logs
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logs
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*.log
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npm-debug.log*
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yarn-debug.log*
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yarn-error.log*
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pnpm-debug.log*
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lerna-debug.log*
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node_modules
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dist
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dist-ssr
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*.local
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# Editor directories and files
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.vscode/*
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!.vscode/extensions.json
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.idea
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.DS_Store
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*.suo
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*.ntvs*
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*.njsproj
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*.sln
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*.sw?
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378
App.tsx
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378
App.tsx
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import React, { useState, useRef, useEffect, useCallback } from 'react';
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import { v4 as uuidv4 } from 'uuid';
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import { Plus, Play, Pause, SkipForward, SkipBack, Volume2, Gauge, Layout } from 'lucide-react';
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import { Article, PlaybackStatus, PlayerState, VoiceName } from './types';
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import { AVAILABLE_VOICES, MIN_SPEED, MAX_SPEED, SPEED_STEP } from './constants';
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import { extractArticleContent, generateSpeechFromText } from './services/geminiService';
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import { base64ToUint8Array, createWavBlob } from './services/audioUtils';
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import { QueueItem } from './components/QueueItem';
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import { VoiceSelector } from './components/VoiceSelector';
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import { ReaderView } from './components/ReaderView';
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export default function App() {
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// -- State --
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const [inputUrl, setInputUrl] = useState('');
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const [queue, setQueue] = useState<Article[]>([]);
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// Selected article for reading (defaults to playing article)
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const [viewId, setViewId] = useState<string | null>(null);
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const [playerState, setPlayerState] = useState<PlayerState>({
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isPlaying: false,
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playbackRate: 1.0,
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currentArticleId: null,
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selectedVoice: VoiceName.Puck,
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});
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// -- Refs --
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const audioRef = useRef<HTMLAudioElement>(new Audio());
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const audioSrcRef = useRef<string | null>(null);
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// -- Helpers --
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const getCurrentArticle = () => queue.find(a => a.id === playerState.currentArticleId);
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const getViewingArticle = () => {
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// If user manually selected an article to view, show that.
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// Otherwise show the currently playing one.
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// Otherwise show the first one.
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if (viewId) return queue.find(a => a.id === viewId);
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if (playerState.currentArticleId) return queue.find(a => a.id === playerState.currentArticleId);
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if (queue.length > 0) return queue[0];
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return null;
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};
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const updateArticleStatus = (id: string, status: PlaybackStatus, errorMessage?: string, audioUrl?: string, title?: string, text?: string) => {
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setQueue(prev => prev.map(item => {
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if (item.id !== id) return item;
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return {
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...item,
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status,
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errorMessage,
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audioUrl: audioUrl || item.audioUrl,
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title: title || item.title,
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text: text || item.text
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};
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}));
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};
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// -- Handlers --
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// 1. Add URL to Queue
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const handleAddUrl = async () => {
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if (!inputUrl.trim()) return;
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const id = uuidv4();
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const newArticle: Article = {
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id,
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url: inputUrl,
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title: 'Fetching info...',
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text: '',
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status: PlaybackStatus.LOADING_TEXT
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};
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setQueue(prev => [...prev, newArticle]);
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setInputUrl('');
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// Auto view the new article while loading
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if (!playerState.isPlaying) {
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setViewId(id);
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}
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// Start fetching text immediately
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try {
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const { title, text } = await extractArticleContent(newArticle.url);
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updateArticleStatus(id, PlaybackStatus.IDLE, undefined, undefined, title, text);
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} catch (error: any) {
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updateArticleStatus(id, PlaybackStatus.ERROR, error.message || "Failed to load article");
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}
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};
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// 2. Generate Audio for an article
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const prepareAudio = async (articleId: string): Promise<string | null> => {
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const article = queue.find(a => a.id === articleId);
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if (!article) return null;
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// If already has audio return it
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if (article.audioUrl) return article.audioUrl;
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updateArticleStatus(articleId, PlaybackStatus.LOADING_AUDIO);
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try {
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if (!article.text || article.text.length < 10) {
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throw new Error("No text available to read.");
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}
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const base64Audio = await generateSpeechFromText(article.text, playerState.selectedVoice);
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const pcmData = base64ToUint8Array(base64Audio);
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const wavBlob = createWavBlob(pcmData);
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const audioUrl = URL.createObjectURL(wavBlob);
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updateArticleStatus(articleId, PlaybackStatus.READY, undefined, audioUrl);
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return audioUrl;
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} catch (error: any) {
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updateArticleStatus(articleId, PlaybackStatus.ERROR, error.message || "Failed to generate speech");
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return null;
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}
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};
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// 3. Play Logic
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const playArticle = useCallback(async (id: string) => {
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const article = queue.find(a => a.id === id);
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if (!article) return;
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// If currently playing a different one, pause it.
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if (playerState.currentArticleId && playerState.currentArticleId !== id) {
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audioRef.current.pause();
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}
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setPlayerState(prev => ({ ...prev, currentArticleId: id, isPlaying: true }));
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// Also switch view to the playing article
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setViewId(id);
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let src = article.audioUrl;
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// Check if we need to generate audio
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if (!src) {
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src = await prepareAudio(id);
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}
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if (src) {
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// Only update src if it's different to avoid reload
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if (audioSrcRef.current !== src) {
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audioRef.current.src = src;
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audioSrcRef.current = src;
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// Apply current speed
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audioRef.current.playbackRate = playerState.playbackRate;
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}
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try {
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await audioRef.current.play();
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updateArticleStatus(id, PlaybackStatus.PLAYING);
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} catch (e) {
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console.error("Play error", e);
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setPlayerState(prev => ({ ...prev, isPlaying: false }));
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}
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}
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}, [queue, playerState.currentArticleId, playerState.playbackRate, playerState.selectedVoice]);
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const pausePlayback = useCallback(() => {
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audioRef.current.pause();
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setPlayerState(prev => ({ ...prev, isPlaying: false }));
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if (playerState.currentArticleId) {
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updateArticleStatus(playerState.currentArticleId, PlaybackStatus.PAUSED);
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}
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}, [playerState.currentArticleId]);
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const handleSpeedChange = (newSpeed: number) => {
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// Clamp
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const speed = Math.max(MIN_SPEED, Math.min(MAX_SPEED, newSpeed));
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setPlayerState(prev => ({ ...prev, playbackRate: speed }));
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if (audioRef.current) {
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audioRef.current.playbackRate = speed;
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}
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};
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// Auto-Advance Logic
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useEffect(() => {
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const audio = audioRef.current;
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const handleEnded = () => {
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const currentId = playerState.currentArticleId;
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if (currentId) {
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updateArticleStatus(currentId, PlaybackStatus.COMPLETED);
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// Find next
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const currentIndex = queue.findIndex(a => a.id === currentId);
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if (currentIndex !== -1 && currentIndex < queue.length - 1) {
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const nextId = queue[currentIndex + 1].id;
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playArticle(nextId);
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} else {
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setPlayerState(prev => ({ ...prev, isPlaying: false }));
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}
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}
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};
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audio.addEventListener('ended', handleEnded);
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return () => {
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audio.removeEventListener('ended', handleEnded);
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};
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}, [playerState.currentArticleId, queue, playArticle]);
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// -- Render --
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const currentArticle = getCurrentArticle();
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const viewingArticle = getViewingArticle();
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return (
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<div className="min-h-screen flex flex-col bg-slate-50 pb-32">
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{/* Header */}
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<header className="bg-white border-b border-slate-200 px-6 py-4 sticky top-0 z-20 shadow-sm">
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<div className="max-w-7xl mx-auto flex items-center justify-between">
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<div className="flex items-center gap-2">
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<div className="bg-blue-600 text-white p-2 rounded-lg">
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<Volume2 className="w-6 h-6" />
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</div>
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<h1 className="text-xl font-bold text-slate-900 tracking-tight hidden sm:block">NewsCaster AI</h1>
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</div>
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<VoiceSelector
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selectedVoice={playerState.selectedVoice}
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onVoiceChange={(v) => setPlayerState(prev => ({ ...prev, selectedVoice: v }))}
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disabled={playerState.isPlaying}
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/>
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</div>
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</header>
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{/* Main Content - Split Layout */}
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<main className="flex-grow px-4 py-6 max-w-7xl mx-auto w-full grid grid-cols-1 lg:grid-cols-12 gap-8">
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{/* Left Column: Controls & Queue (5 cols) */}
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<div className="lg:col-span-5 space-y-6">
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{/* Input Section */}
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<div className="bg-white p-1 rounded-2xl shadow-sm border border-slate-200 flex gap-2 items-center pl-4">
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<input
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type="url"
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placeholder="Paste article URL here..."
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className="flex-grow py-3 outline-none text-slate-700 bg-transparent placeholder:text-slate-400 min-w-0"
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value={inputUrl}
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onChange={(e) => setInputUrl(e.target.value)}
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onKeyDown={(e) => e.key === 'Enter' && handleAddUrl()}
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/>
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<button
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onClick={handleAddUrl}
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disabled={!inputUrl.trim()}
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className="bg-slate-900 hover:bg-slate-800 disabled:bg-slate-300 text-white px-4 sm:px-6 py-3 rounded-xl font-medium transition-all flex items-center gap-2 flex-shrink-0"
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>
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<Plus className="w-4 h-4" />
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<span className="hidden sm:inline">Queue</span>
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</button>
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</div>
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{/* Queue List */}
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<div className="space-y-4">
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<div className="flex items-center justify-between px-1">
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<h2 className="text-sm font-semibold text-slate-500 uppercase tracking-wider">Up Next</h2>
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<span className="text-xs bg-slate-100 text-slate-600 px-2 py-1 rounded-full">{queue.length} articles</span>
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</div>
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<div className="space-y-3">
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{queue.length === 0 ? (
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<div className="text-center py-12 border-2 border-dashed border-slate-200 rounded-2xl text-slate-400 bg-white">
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<p>No articles queued.</p>
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</div>
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) : (
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queue.map(article => (
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<div key={article.id} onClick={() => setViewId(article.id)} className="cursor-pointer">
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<QueueItem
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article={article}
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isActive={article.id === playerState.currentArticleId}
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isPlaying={playerState.isPlaying}
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onPlay={() => playArticle(article.id)}
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onPause={pausePlayback}
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onRemove={() => {
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if (playerState.currentArticleId === article.id) {
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pausePlayback();
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setPlayerState(prev => ({ ...prev, currentArticleId: null }));
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}
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setQueue(prev => prev.filter(a => a.id !== article.id));
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if (viewId === article.id) setViewId(null);
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}}
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/>
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</div>
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))
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)}
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</div>
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</div>
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</div>
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{/* Right Column: Reader View (7 cols) */}
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<div className="lg:col-span-7 h-full hidden lg:block">
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<ReaderView article={viewingArticle} />
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</div>
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{/* Mobile: Reader View appears below if selected */}
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<div className="lg:hidden block">
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{viewingArticle && (
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<div className="mt-8">
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<h3 className="text-sm font-semibold text-slate-500 uppercase tracking-wider mb-2">Article Reader</h3>
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<div className="h-[500px]">
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<ReaderView article={viewingArticle} />
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</div>
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</div>
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)}
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</div>
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</main>
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{/* Sticky Player */}
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<div className="fixed bottom-0 left-0 right-0 bg-white/90 backdrop-blur-lg border-t border-slate-200 p-4 pb-6 shadow-[0_-4px_20px_rgba(0,0,0,0.05)] z-30">
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<div className="max-w-7xl mx-auto flex flex-col sm:flex-row items-center gap-4 sm:gap-8">
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{/* Current Track Info */}
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<div className="flex-grow w-full sm:w-auto min-w-0 text-center sm:text-left">
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{currentArticle ? (
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<div>
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<h4 className="font-bold text-slate-900 truncate">{currentArticle.title}</h4>
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<p className="text-xs text-slate-500 truncate">Playing from queue</p>
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</div>
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) : (
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<div className="text-slate-400 text-sm font-medium">Ready to play</div>
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)}
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</div>
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{/* Controls */}
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<div className="flex items-center gap-6">
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{/* Speed Control */}
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<div className="hidden sm:flex items-center gap-2 group relative">
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<Gauge className="w-4 h-4 text-slate-400" />
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<div className="flex items-center gap-2 bg-slate-100 rounded-lg p-1">
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<button
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className="w-6 h-6 flex items-center justify-center hover:bg-white rounded text-xs font-bold text-slate-600 transition-colors"
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onClick={() => handleSpeedChange(playerState.playbackRate - SPEED_STEP)}
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>-</button>
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<span className="text-xs font-mono w-8 text-center font-bold text-blue-600">{playerState.playbackRate.toFixed(1)}x</span>
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<button
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className="w-6 h-6 flex items-center justify-center hover:bg-white rounded text-xs font-bold text-slate-600 transition-colors"
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onClick={() => handleSpeedChange(playerState.playbackRate + SPEED_STEP)}
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>+</button>
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</div>
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</div>
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{/* Main Transport */}
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<div className="flex items-center gap-4">
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<button
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className="p-2 text-slate-400 hover:text-slate-600 transition-colors"
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onClick={() => {
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const idx = queue.findIndex(a => a.id === playerState.currentArticleId);
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if (idx > 0) playArticle(queue[idx - 1].id);
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}}
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disabled={!playerState.currentArticleId || queue.findIndex(a => a.id === playerState.currentArticleId) <= 0}
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>
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<SkipBack className="w-5 h-5" />
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</button>
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<button
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className="w-12 h-12 rounded-full bg-slate-900 hover:bg-slate-800 text-white flex items-center justify-center shadow-lg hover:shadow-xl hover:scale-105 transition-all active:scale-95"
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onClick={() => {
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if (playerState.isPlaying) pausePlayback();
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else if (playerState.currentArticleId) playArticle(playerState.currentArticleId);
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else if (queue.length > 0) playArticle(queue[0].id);
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||||
}}
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disabled={queue.length === 0}
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||||
>
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{playerState.isPlaying ? <Pause className="w-5 h-5 fill-current" /> : <Play className="w-5 h-5 fill-current ml-1" />}
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</button>
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||||
<button
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||||
className="p-2 text-slate-400 hover:text-slate-600 transition-colors"
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||||
onClick={() => {
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||||
const idx = queue.findIndex(a => a.id === playerState.currentArticleId);
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if (idx !== -1 && idx < queue.length - 1) playArticle(queue[idx + 1].id);
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||||
}}
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disabled={!playerState.currentArticleId || queue.findIndex(a => a.id === playerState.currentArticleId) >= queue.length - 1}
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||||
>
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<SkipForward className="w-5 h-5" />
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</button>
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||||
</div>
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</div>
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||||
</div>
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||||
</div>
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||||
</div>
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||||
);
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}
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25
README.md
25
README.md
@@ -1,11 +1,20 @@
|
||||
<div align="center">
|
||||
|
||||
<img width="1200" height="475" alt="GHBanner" src="https://github.com/user-attachments/assets/0aa67016-6eaf-458a-adb2-6e31a0763ed6" />
|
||||
|
||||
<h1>Built with AI Studio</h2>
|
||||
|
||||
<p>The fastest path from prompt to production with Gemini.</p>
|
||||
|
||||
<a href="https://aistudio.google.com/apps">Start building</a>
|
||||
|
||||
</div>
|
||||
|
||||
# Run and deploy your AI Studio app
|
||||
|
||||
This contains everything you need to run your app locally.
|
||||
|
||||
View your app in AI Studio: https://ai.studio/apps/drive/1a8wkyYOUvPDWvUXbrtN2dznWVZ-VdSDJ
|
||||
|
||||
## Run Locally
|
||||
|
||||
**Prerequisites:** Node.js
|
||||
|
||||
|
||||
1. Install dependencies:
|
||||
`npm install`
|
||||
2. Set the `GEMINI_API_KEY` in [.env.local](.env.local) to your Gemini API key
|
||||
3. Run the app:
|
||||
`npm run dev`
|
||||
|
||||
86
components/QueueItem.tsx
Normal file
86
components/QueueItem.tsx
Normal file
@@ -0,0 +1,86 @@
|
||||
import React from 'react';
|
||||
import { Article, PlaybackStatus } from '../types';
|
||||
import { Play, Pause, Loader2, AlertCircle, FileText, Headphones } from 'lucide-react';
|
||||
|
||||
interface QueueItemProps {
|
||||
article: Article;
|
||||
isActive: boolean;
|
||||
isPlaying: boolean;
|
||||
onPlay: () => void;
|
||||
onPause: () => void;
|
||||
onRemove: () => void;
|
||||
}
|
||||
|
||||
export const QueueItem: React.FC<QueueItemProps> = ({
|
||||
article,
|
||||
isActive,
|
||||
isPlaying,
|
||||
onPlay,
|
||||
onPause,
|
||||
onRemove
|
||||
}) => {
|
||||
|
||||
const getStatusIcon = () => {
|
||||
switch (article.status) {
|
||||
case PlaybackStatus.LOADING_TEXT:
|
||||
return <Loader2 className="w-5 h-5 animate-spin text-blue-500" />;
|
||||
case PlaybackStatus.LOADING_AUDIO:
|
||||
return <Loader2 className="w-5 h-5 animate-spin text-purple-500" />;
|
||||
case PlaybackStatus.ERROR:
|
||||
return <AlertCircle className="w-5 h-5 text-red-500" />;
|
||||
case PlaybackStatus.PLAYING:
|
||||
return <div className="w-4 h-4 flex items-end space-x-0.5 h-4 overflow-hidden">
|
||||
<div className="w-1 bg-blue-500 animate-[bounce_1s_infinite] h-2"></div>
|
||||
<div className="w-1 bg-blue-500 animate-[bounce_1.2s_infinite] h-4"></div>
|
||||
<div className="w-1 bg-blue-500 animate-[bounce_0.8s_infinite] h-3"></div>
|
||||
</div>;
|
||||
default:
|
||||
return <FileText className="w-5 h-5 text-slate-400" />;
|
||||
}
|
||||
};
|
||||
|
||||
const isReady = article.status === PlaybackStatus.READY || article.status === PlaybackStatus.PAUSED || article.status === PlaybackStatus.PLAYING || article.status === PlaybackStatus.COMPLETED;
|
||||
|
||||
return (
|
||||
<div className={`
|
||||
relative group flex items-center p-4 rounded-xl border transition-all duration-200
|
||||
${isActive
|
||||
? 'bg-blue-50 border-blue-200 shadow-sm'
|
||||
: 'bg-white border-slate-100 hover:border-slate-300'
|
||||
}
|
||||
`}>
|
||||
<div className="flex-shrink-0 mr-4 w-8 flex justify-center">
|
||||
{getStatusIcon()}
|
||||
</div>
|
||||
|
||||
<div className="flex-grow min-w-0">
|
||||
<h3 className={`font-medium truncate ${isActive ? 'text-blue-900' : 'text-slate-900'}`}>
|
||||
{article.title || article.url}
|
||||
</h3>
|
||||
<p className="text-xs text-slate-500 truncate mt-0.5">
|
||||
{article.url}
|
||||
</p>
|
||||
{article.errorMessage && (
|
||||
<p className="text-xs text-red-500 mt-1">{article.errorMessage}</p>
|
||||
)}
|
||||
</div>
|
||||
|
||||
<div className="flex-shrink-0 ml-4 flex items-center space-x-2 opacity-100 sm:opacity-0 sm:group-hover:opacity-100 transition-opacity">
|
||||
{isReady && (
|
||||
<button
|
||||
onClick={isActive && isPlaying ? onPause : onPlay}
|
||||
className="p-2 rounded-full bg-slate-100 hover:bg-blue-100 text-slate-700 hover:text-blue-700 transition-colors"
|
||||
>
|
||||
{isActive && isPlaying ? <Pause className="w-4 h-4" /> : <Play className="w-4 h-4" />}
|
||||
</button>
|
||||
)}
|
||||
<button
|
||||
onClick={onRemove}
|
||||
className="text-xs text-slate-400 hover:text-red-500 underline px-2"
|
||||
>
|
||||
Remove
|
||||
</button>
|
||||
</div>
|
||||
</div>
|
||||
);
|
||||
};
|
||||
59
components/ReaderView.tsx
Normal file
59
components/ReaderView.tsx
Normal file
@@ -0,0 +1,59 @@
|
||||
import React from 'react';
|
||||
import { Article } from '../types';
|
||||
import { FileText } from 'lucide-react';
|
||||
|
||||
interface ReaderViewProps {
|
||||
article?: Article | null;
|
||||
}
|
||||
|
||||
export const ReaderView: React.FC<ReaderViewProps> = ({ article }) => {
|
||||
if (!article) {
|
||||
return (
|
||||
<div className="h-full flex flex-col items-center justify-center text-slate-400 p-12 border-2 border-dashed border-slate-200 rounded-2xl bg-slate-50/50">
|
||||
<FileText className="w-12 h-12 mb-4 opacity-50" />
|
||||
<p className="text-lg font-medium">Select an article to read along</p>
|
||||
<p className="text-sm">The text will appear here while you listen.</p>
|
||||
</div>
|
||||
);
|
||||
}
|
||||
|
||||
// Split text by newlines to create paragraphs
|
||||
const paragraphs = article.text
|
||||
? article.text.split('\n').filter(p => p.trim().length > 0)
|
||||
: [];
|
||||
|
||||
return (
|
||||
<div className="bg-white rounded-2xl border border-slate-200 shadow-sm overflow-hidden h-[calc(100vh-12rem)] flex flex-col">
|
||||
<div className="p-6 border-b border-slate-100 bg-white sticky top-0 z-10">
|
||||
<h2 className="text-2xl font-bold text-slate-900 leading-tight">
|
||||
{article.title}
|
||||
</h2>
|
||||
<a
|
||||
href={article.url}
|
||||
target="_blank"
|
||||
rel="noopener noreferrer"
|
||||
className="text-sm text-blue-600 hover:underline mt-2 inline-block"
|
||||
>
|
||||
{new URL(article.url).hostname}
|
||||
</a>
|
||||
</div>
|
||||
|
||||
<div className="flex-grow overflow-y-auto p-6 sm:p-8 space-y-6 custom-scrollbar bg-white">
|
||||
{paragraphs.length > 0 ? (
|
||||
paragraphs.map((paragraph, idx) => (
|
||||
<p key={idx} className="text-lg text-slate-700 leading-relaxed font-serif">
|
||||
{paragraph}
|
||||
</p>
|
||||
))
|
||||
) : (
|
||||
<div className="space-y-4 animate-pulse">
|
||||
<div className="h-4 bg-slate-100 rounded w-3/4"></div>
|
||||
<div className="h-4 bg-slate-100 rounded w-full"></div>
|
||||
<div className="h-4 bg-slate-100 rounded w-5/6"></div>
|
||||
<p className="text-slate-400 italic mt-4">Extracting article content...</p>
|
||||
</div>
|
||||
)}
|
||||
</div>
|
||||
</div>
|
||||
);
|
||||
};
|
||||
30
components/VoiceSelector.tsx
Normal file
30
components/VoiceSelector.tsx
Normal file
@@ -0,0 +1,30 @@
|
||||
import React from 'react';
|
||||
import { VoiceName } from '../types';
|
||||
import { AVAILABLE_VOICES } from '../constants';
|
||||
import { Mic } from 'lucide-react';
|
||||
|
||||
interface VoiceSelectorProps {
|
||||
selectedVoice: VoiceName;
|
||||
onVoiceChange: (voice: VoiceName) => void;
|
||||
disabled?: boolean;
|
||||
}
|
||||
|
||||
export const VoiceSelector: React.FC<VoiceSelectorProps> = ({ selectedVoice, onVoiceChange, disabled }) => {
|
||||
return (
|
||||
<div className="flex items-center space-x-2">
|
||||
<Mic className="w-4 h-4 text-slate-500" />
|
||||
<select
|
||||
value={selectedVoice}
|
||||
onChange={(e) => onVoiceChange(e.target.value as VoiceName)}
|
||||
disabled={disabled}
|
||||
className="bg-white border border-slate-300 text-slate-700 text-sm rounded-lg focus:ring-blue-500 focus:border-blue-500 block w-full p-2.5 disabled:opacity-50 disabled:cursor-not-allowed"
|
||||
>
|
||||
{AVAILABLE_VOICES.map((v) => (
|
||||
<option key={v.name} value={v.name}>
|
||||
{v.label}
|
||||
</option>
|
||||
))}
|
||||
</select>
|
||||
</div>
|
||||
);
|
||||
};
|
||||
15
constants.ts
Normal file
15
constants.ts
Normal file
@@ -0,0 +1,15 @@
|
||||
import { VoiceName } from './types';
|
||||
|
||||
export const AVAILABLE_VOICES = [
|
||||
{ name: VoiceName.Puck, label: 'Puck (Male, Standard)' },
|
||||
{ name: VoiceName.Charon, label: 'Charon (Male, Deep)' },
|
||||
{ name: VoiceName.Kore, label: 'Kore (Female, Soothing)' },
|
||||
{ name: VoiceName.Fenrir, label: 'Fenrir (Male, Energetic)' },
|
||||
{ name: VoiceName.Zephyr, label: 'Zephyr (Female, Clear)' },
|
||||
];
|
||||
|
||||
export const MIN_SPEED = 0.5;
|
||||
export const MAX_SPEED = 3.5;
|
||||
export const SPEED_STEP = 0.5;
|
||||
|
||||
export const SAMPLE_RATE = 24000;
|
||||
40
index.html
Normal file
40
index.html
Normal file
@@ -0,0 +1,40 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="en">
|
||||
<head>
|
||||
<meta charset="UTF-8" />
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
|
||||
<title>NewsCaster AI</title>
|
||||
<script src="https://cdn.tailwindcss.com"></script>
|
||||
<link href="https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap" rel="stylesheet">
|
||||
<style>
|
||||
body { font-family: 'Inter', sans-serif; }
|
||||
/* Custom scrollbar for queue list */
|
||||
.custom-scrollbar::-webkit-scrollbar {
|
||||
width: 6px;
|
||||
}
|
||||
.custom-scrollbar::-webkit-scrollbar-track {
|
||||
background: rgba(0,0,0,0.05);
|
||||
}
|
||||
.custom-scrollbar::-webkit-scrollbar-thumb {
|
||||
background: rgba(0,0,0,0.2);
|
||||
border-radius: 3px;
|
||||
}
|
||||
</style>
|
||||
<script type="importmap">
|
||||
{
|
||||
"imports": {
|
||||
"lucide-react": "https://aistudiocdn.com/lucide-react@^0.554.0",
|
||||
"@google/genai": "https://aistudiocdn.com/@google/genai@^1.30.0",
|
||||
"react": "https://aistudiocdn.com/react@^19.2.0",
|
||||
"react/": "https://aistudiocdn.com/react@^19.2.0/",
|
||||
"react-dom/": "https://aistudiocdn.com/react-dom@^19.2.0/",
|
||||
"uuid": "https://aistudiocdn.com/uuid@^13.0.0"
|
||||
}
|
||||
}
|
||||
</script>
|
||||
</head>
|
||||
<body class="bg-slate-50 text-slate-900">
|
||||
<div id="root"></div>
|
||||
<script type="module" src="/index.tsx"></script>
|
||||
</body>
|
||||
</html>
|
||||
15
index.tsx
Normal file
15
index.tsx
Normal file
@@ -0,0 +1,15 @@
|
||||
import React from 'react';
|
||||
import ReactDOM from 'react-dom/client';
|
||||
import App from './App';
|
||||
|
||||
const rootElement = document.getElementById('root');
|
||||
if (!rootElement) {
|
||||
throw new Error("Could not find root element to mount to");
|
||||
}
|
||||
|
||||
const root = ReactDOM.createRoot(rootElement);
|
||||
root.render(
|
||||
<React.StrictMode>
|
||||
<App />
|
||||
</React.StrictMode>
|
||||
);
|
||||
5
metadata.json
Normal file
5
metadata.json
Normal file
@@ -0,0 +1,5 @@
|
||||
{
|
||||
"name": "NewsCaster AI",
|
||||
"description": "A realistic AI news reader that converts article URLs to speech with adjustable speed and pitch preservation.",
|
||||
"requestFramePermissions": []
|
||||
}
|
||||
24
package.json
Normal file
24
package.json
Normal file
@@ -0,0 +1,24 @@
|
||||
{
|
||||
"name": "newscaster-ai",
|
||||
"private": true,
|
||||
"version": "0.0.0",
|
||||
"type": "module",
|
||||
"scripts": {
|
||||
"dev": "vite",
|
||||
"build": "vite build",
|
||||
"preview": "vite preview"
|
||||
},
|
||||
"dependencies": {
|
||||
"lucide-react": "^0.554.0",
|
||||
"@google/genai": "^1.30.0",
|
||||
"react": "^19.2.0",
|
||||
"react-dom": "^19.2.0",
|
||||
"uuid": "^13.0.0"
|
||||
},
|
||||
"devDependencies": {
|
||||
"@types/node": "^22.14.0",
|
||||
"@vitejs/plugin-react": "^5.0.0",
|
||||
"typescript": "~5.8.2",
|
||||
"vite": "^6.2.0"
|
||||
}
|
||||
}
|
||||
59
services/audioUtils.ts
Normal file
59
services/audioUtils.ts
Normal file
@@ -0,0 +1,59 @@
|
||||
/**
|
||||
* Converts a Base64 string (Raw PCM) to a Uint8Array.
|
||||
*/
|
||||
export const base64ToUint8Array = (base64: string): Uint8Array => {
|
||||
const binaryString = atob(base64);
|
||||
const len = binaryString.length;
|
||||
const bytes = new Uint8Array(len);
|
||||
for (let i = 0; i < len; i++) {
|
||||
bytes[i] = binaryString.charCodeAt(i);
|
||||
}
|
||||
return bytes;
|
||||
};
|
||||
|
||||
/**
|
||||
* Wraps raw PCM data in a WAV container so it can be played by standard HTML5 Audio elements.
|
||||
* This allows us to use `playbackRate` with automatic pitch preservation.
|
||||
*/
|
||||
export const createWavBlob = (pcmData: Uint8Array, sampleRate: number = 24000): Blob => {
|
||||
const numChannels = 1;
|
||||
const bitsPerSample = 16;
|
||||
const byteRate = (sampleRate * numChannels * bitsPerSample) / 8;
|
||||
const blockAlign = (numChannels * bitsPerSample) / 8;
|
||||
const dataSize = pcmData.length;
|
||||
const chunkSize = 36 + dataSize;
|
||||
|
||||
const buffer = new ArrayBuffer(44 + dataSize);
|
||||
const view = new DataView(buffer);
|
||||
|
||||
// RIFF chunk descriptor
|
||||
writeString(view, 0, 'RIFF');
|
||||
view.setUint32(4, chunkSize, true);
|
||||
writeString(view, 8, 'WAVE');
|
||||
|
||||
// fmt sub-chunk
|
||||
writeString(view, 12, 'fmt ');
|
||||
view.setUint32(16, 16, true); // Subchunk1Size (16 for PCM)
|
||||
view.setUint16(20, 1, true); // AudioFormat (1 for PCM)
|
||||
view.setUint16(22, numChannels, true); // NumChannels
|
||||
view.setUint32(24, sampleRate, true); // SampleRate
|
||||
view.setUint32(28, byteRate, true); // ByteRate
|
||||
view.setUint16(32, blockAlign, true); // BlockAlign
|
||||
view.setUint16(34, bitsPerSample, true); // BitsPerSample
|
||||
|
||||
// data sub-chunk
|
||||
writeString(view, 36, 'data');
|
||||
view.setUint32(40, dataSize, true);
|
||||
|
||||
// Write PCM data
|
||||
const dataView = new Uint8Array(buffer, 44);
|
||||
dataView.set(pcmData);
|
||||
|
||||
return new Blob([buffer], { type: 'audio/wav' });
|
||||
};
|
||||
|
||||
const writeString = (view: DataView, offset: number, string: string) => {
|
||||
for (let i = 0; i < string.length; i++) {
|
||||
view.setUint8(offset + i, string.charCodeAt(i));
|
||||
}
|
||||
};
|
||||
283
services/geminiService.ts
Normal file
283
services/geminiService.ts
Normal file
@@ -0,0 +1,283 @@
|
||||
import { GoogleGenAI, Modality } from '@google/genai';
|
||||
import { VoiceName } from '../types';
|
||||
|
||||
const getAiClient = () => {
|
||||
const apiKey = process.env.API_KEY;
|
||||
if (!apiKey) {
|
||||
throw new Error("API Key is missing");
|
||||
}
|
||||
return new GoogleGenAI({ apiKey });
|
||||
};
|
||||
|
||||
/**
|
||||
* Helper to ensure URL has protocol.
|
||||
* Proxies often fail if 'http/https' is missing.
|
||||
*/
|
||||
const normalizeUrl = (url: string) => {
|
||||
let cleanUrl = url.trim();
|
||||
if (!cleanUrl.startsWith('http://') && !cleanUrl.startsWith('https://')) {
|
||||
return `https://${cleanUrl}`;
|
||||
}
|
||||
return cleanUrl;
|
||||
};
|
||||
|
||||
/**
|
||||
* List of CORS proxies to try in order.
|
||||
* This improves reliability if one service is down or blocked.
|
||||
*/
|
||||
const PROXY_PROVIDERS = [
|
||||
// AllOrigins: Generally the most reliable for raw text
|
||||
(url: string) => `https://api.allorigins.win/raw?url=${encodeURIComponent(url)}`,
|
||||
|
||||
// CodeTabs: Good fallback, handles redirects well
|
||||
(url: string) => `https://api.codetabs.com/v1/proxy?quest=${encodeURIComponent(url)}`,
|
||||
|
||||
// CORSProxy.io: Fast but sometimes has strict CORS headers
|
||||
(url: string) => `https://corsproxy.io/?${encodeURIComponent(url)}`,
|
||||
|
||||
// ThingProxy: Another fallback
|
||||
(url: string) => `https://thingproxy.freeboard.io/fetch/${url}`
|
||||
];
|
||||
|
||||
/**
|
||||
* Cleans raw HTML by removing scripts, styles, and non-content elements.
|
||||
* This acts like a dedicated "Reader Mode" pre-processor.
|
||||
*/
|
||||
function cleanAndMinifyHtml(rawHtml: string): string {
|
||||
try {
|
||||
const parser = new DOMParser();
|
||||
const doc = parser.parseFromString(rawHtml, 'text/html');
|
||||
|
||||
// 1. Remove heavy technical tags
|
||||
const technicalTags = ['script', 'style', 'noscript', 'iframe', 'svg', 'link', 'meta', 'button', 'input', 'form', 'img', 'picture', 'video'];
|
||||
technicalTags.forEach(tag => {
|
||||
const elements = doc.querySelectorAll(tag);
|
||||
elements.forEach(el => el.remove());
|
||||
});
|
||||
|
||||
// 2. Remove semantic layout tags that are usually clutter
|
||||
const layoutTags = ['nav', 'footer', 'aside', 'header'];
|
||||
layoutTags.forEach(tag => {
|
||||
const elements = doc.querySelectorAll(tag);
|
||||
elements.forEach(el => el.remove());
|
||||
});
|
||||
|
||||
// 3. Remove common ad/social/cookie containers by class/id heuristics
|
||||
const junkSelectors = [
|
||||
'[class*="ad-"]', '[id*="ad-"]',
|
||||
'[class*="cookie"]', '[id*="cookie"]',
|
||||
'[class*="newsletter"]', '[id*="newsletter"]',
|
||||
'[class*="social"]', '[class*="share"]',
|
||||
'[class*="comment"]', '[id*="comment"]',
|
||||
'[class*="recommended"]', '[class*="related"]'
|
||||
];
|
||||
|
||||
junkSelectors.forEach(selector => {
|
||||
try {
|
||||
const elements = doc.querySelectorAll(selector);
|
||||
elements.forEach(el => el.remove());
|
||||
} catch (e) {
|
||||
// Ignore invalid selector errors
|
||||
}
|
||||
});
|
||||
|
||||
// 4. Return the cleanest possible content
|
||||
// If there is a specific article tag, it's usually the best bet.
|
||||
const article = doc.querySelector('article');
|
||||
if (article && article.textContent && article.textContent.length > 200) {
|
||||
return article.innerHTML;
|
||||
}
|
||||
|
||||
const main = doc.querySelector('main');
|
||||
if (main && main.textContent && main.textContent.length > 200) {
|
||||
return main.innerHTML;
|
||||
}
|
||||
|
||||
// Fallback: Return the cleaned body
|
||||
return doc.body.innerHTML;
|
||||
} catch (e) {
|
||||
console.warn("HTML cleaning failed, using raw string", e);
|
||||
return rawHtml;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Fetches Raw HTML using a rotation of proxies.
|
||||
*/
|
||||
async function fetchRawHtml(inputUrl: string): Promise<string> {
|
||||
const url = normalizeUrl(inputUrl);
|
||||
let lastError;
|
||||
|
||||
for (const provider of PROXY_PROVIDERS) {
|
||||
let proxyUrl = '';
|
||||
try {
|
||||
proxyUrl = provider(url);
|
||||
console.log(`Fetching via proxy: ${proxyUrl}`);
|
||||
|
||||
const controller = new AbortController();
|
||||
const timeoutId = setTimeout(() => controller.abort(), 10000); // 10s timeout per proxy
|
||||
|
||||
// We purposely do NOT add complex headers here.
|
||||
// Adding headers like 'X-Requested-With' often triggers a CORS Preflight (OPTIONS) request,
|
||||
// which many simple free proxies do not handle correctly, causing "Load failed".
|
||||
const response = await fetch(proxyUrl, {
|
||||
signal: controller.signal,
|
||||
});
|
||||
clearTimeout(timeoutId);
|
||||
|
||||
if (!response.ok) {
|
||||
throw new Error(`Proxy returned status ${response.status}`);
|
||||
}
|
||||
|
||||
const text = await response.text();
|
||||
|
||||
// Simple validation to ensure we got something resembling HTML/Text
|
||||
if (text && text.length > 100) {
|
||||
return text;
|
||||
} else {
|
||||
throw new Error("Response too short, likely blocked or empty.");
|
||||
}
|
||||
} catch (e) {
|
||||
console.warn(`Proxy attempt failed for ${proxyUrl}:`, e);
|
||||
lastError = e;
|
||||
}
|
||||
}
|
||||
|
||||
throw lastError || new Error("Unable to access article content via proxies.");
|
||||
}
|
||||
|
||||
/**
|
||||
* Uses Gemini to extract clean text from the raw HTML.
|
||||
*/
|
||||
async function parseHtmlWithGemini(html: string, url: string): Promise<{ title: string; text: string }> {
|
||||
const ai = getAiClient();
|
||||
|
||||
const cleanedHtml = cleanAndMinifyHtml(html);
|
||||
|
||||
if (cleanedHtml.length < 100) {
|
||||
throw new Error("Content appears to be empty after cleaning. The site might require JavaScript to render.");
|
||||
}
|
||||
|
||||
const prompt = `
|
||||
SOURCE URL: ${url}
|
||||
|
||||
TASK:
|
||||
I have provided the HTML source of a webpage.
|
||||
Your job is to act as a dumb "Text Extractor" tool.
|
||||
Extract the TITLE and the FULL BODY TEXT of the main article.
|
||||
|
||||
CRITICAL RULES:
|
||||
1. VERBATIM: Do NOT rewrite, summarize, or fix the text. Output it exactly as written in the HTML.
|
||||
2. FULL TEXT: Do NOT stop early. Process the entire HTML to find the end of the article.
|
||||
3. CLEANING: Exclude ads, navigation, "read more" links, and comments.
|
||||
4. FORMATTING: Keep the paragraphs intact.
|
||||
5. FAILURE: If the HTML contains a CAPTCHA, Login Screen, or Paywall message instead of an article, return the text "PAYWALL_DETECTED".
|
||||
|
||||
Output Format:
|
||||
===TITLE_START===
|
||||
(Headline)
|
||||
===TITLE_END===
|
||||
===TEXT_START===
|
||||
(Paragraph 1)
|
||||
|
||||
(Paragraph 2)
|
||||
|
||||
...
|
||||
|
||||
(Final Paragraph)
|
||||
===TEXT_END===
|
||||
|
||||
HTML CONTENT:
|
||||
${cleanedHtml}
|
||||
`;
|
||||
|
||||
const response = await ai.models.generateContent({
|
||||
model: 'gemini-2.5-flash',
|
||||
contents: prompt,
|
||||
config: {
|
||||
temperature: 0.0, // Strict deterministic output
|
||||
}
|
||||
});
|
||||
|
||||
return parseResponse(response.text || "");
|
||||
}
|
||||
|
||||
function parseResponse(rawText: string): { title: string; text: string } {
|
||||
if (rawText.includes("PAYWALL_DETECTED")) {
|
||||
throw new Error("This article is behind a paywall or anti-bot protection and cannot be accessed directly.");
|
||||
}
|
||||
|
||||
const titleMatch = rawText.match(/===TITLE_START===([\s\S]*?)===TITLE_END===/);
|
||||
const textMatch = rawText.match(/===TEXT_START===([\s\S]*?)===TEXT_END===/);
|
||||
|
||||
const title = titleMatch ? titleMatch[1].trim() : "";
|
||||
const text = textMatch ? textMatch[1].trim() : "";
|
||||
|
||||
// Fallback logic for malformed AI responses
|
||||
if (!text && rawText.length > 100) {
|
||||
// If AI failed to use delimiters but returned text, try to use it if it looks like an article
|
||||
if (!rawText.includes("===TEXT_START===") && rawText.length > 200) {
|
||||
return { title: "Extracted Content", text: rawText };
|
||||
}
|
||||
}
|
||||
|
||||
if (!text || text.length < 50) {
|
||||
throw new Error("Could not extract article text. The page structure might be too complex or empty.");
|
||||
}
|
||||
|
||||
return { title, text };
|
||||
}
|
||||
|
||||
/**
|
||||
* Main Extraction Function
|
||||
*/
|
||||
export const extractArticleContent = async (url: string): Promise<{ title: string; text: string }> => {
|
||||
console.log("Attempting to extract:", url);
|
||||
|
||||
try {
|
||||
// 1. Fetch Raw HTML via Proxy
|
||||
const html = await fetchRawHtml(url);
|
||||
|
||||
// 2. Parse with Gemini
|
||||
console.log("HTML fetched (" + html.length + " chars). Parsing...");
|
||||
return await parseHtmlWithGemini(html, url);
|
||||
|
||||
} catch (error: any) {
|
||||
console.error("Extraction failed:", error);
|
||||
// We intentionally DO NOT fall back to Google Search here, as per user request.
|
||||
// We want to fail if we can't get the direct content.
|
||||
throw new Error(error.message || "Failed to access article directly.");
|
||||
}
|
||||
};
|
||||
|
||||
/**
|
||||
* Generates speech audio from text.
|
||||
*/
|
||||
export const generateSpeechFromText = async (text: string, voice: VoiceName): Promise<string> => {
|
||||
const ai = getAiClient();
|
||||
|
||||
const response = await ai.models.generateContent({
|
||||
model: 'gemini-2.5-flash-preview-tts',
|
||||
contents: {
|
||||
parts: [{ text: text }]
|
||||
},
|
||||
config: {
|
||||
responseModalities: [Modality.AUDIO],
|
||||
speechConfig: {
|
||||
voiceConfig: {
|
||||
prebuiltVoiceConfig: {
|
||||
voiceName: voice
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
});
|
||||
|
||||
const base64Audio = response.candidates?.[0]?.content?.parts?.[0]?.inlineData?.data;
|
||||
|
||||
if (!base64Audio) {
|
||||
throw new Error("No audio data received from model");
|
||||
}
|
||||
|
||||
return base64Audio;
|
||||
};
|
||||
29
tsconfig.json
Normal file
29
tsconfig.json
Normal file
@@ -0,0 +1,29 @@
|
||||
{
|
||||
"compilerOptions": {
|
||||
"target": "ES2022",
|
||||
"experimentalDecorators": true,
|
||||
"useDefineForClassFields": false,
|
||||
"module": "ESNext",
|
||||
"lib": [
|
||||
"ES2022",
|
||||
"DOM",
|
||||
"DOM.Iterable"
|
||||
],
|
||||
"skipLibCheck": true,
|
||||
"types": [
|
||||
"node"
|
||||
],
|
||||
"moduleResolution": "bundler",
|
||||
"isolatedModules": true,
|
||||
"moduleDetection": "force",
|
||||
"allowJs": true,
|
||||
"jsx": "react-jsx",
|
||||
"paths": {
|
||||
"@/*": [
|
||||
"./*"
|
||||
]
|
||||
},
|
||||
"allowImportingTsExtensions": true,
|
||||
"noEmit": true
|
||||
}
|
||||
}
|
||||
35
types.ts
Normal file
35
types.ts
Normal file
@@ -0,0 +1,35 @@
|
||||
export enum VoiceName {
|
||||
Puck = 'Puck',
|
||||
Charon = 'Charon',
|
||||
Kore = 'Kore',
|
||||
Fenrir = 'Fenrir',
|
||||
Zephyr = 'Zephyr',
|
||||
}
|
||||
|
||||
export enum PlaybackStatus {
|
||||
IDLE = 'IDLE',
|
||||
LOADING_TEXT = 'LOADING_TEXT',
|
||||
LOADING_AUDIO = 'LOADING_AUDIO',
|
||||
READY = 'READY',
|
||||
PLAYING = 'PLAYING',
|
||||
PAUSED = 'PAUSED',
|
||||
ERROR = 'ERROR',
|
||||
COMPLETED = 'COMPLETED'
|
||||
}
|
||||
|
||||
export interface Article {
|
||||
id: string;
|
||||
url: string;
|
||||
title: string;
|
||||
text: string;
|
||||
audioUrl?: string; // Blob URL for the WAV file
|
||||
status: PlaybackStatus;
|
||||
errorMessage?: string;
|
||||
}
|
||||
|
||||
export interface PlayerState {
|
||||
isPlaying: boolean;
|
||||
playbackRate: number;
|
||||
currentArticleId: string | null;
|
||||
selectedVoice: VoiceName;
|
||||
}
|
||||
23
vite.config.ts
Normal file
23
vite.config.ts
Normal file
@@ -0,0 +1,23 @@
|
||||
import path from 'path';
|
||||
import { defineConfig, loadEnv } from 'vite';
|
||||
import react from '@vitejs/plugin-react';
|
||||
|
||||
export default defineConfig(({ mode }) => {
|
||||
const env = loadEnv(mode, '.', '');
|
||||
return {
|
||||
server: {
|
||||
port: 3000,
|
||||
host: '0.0.0.0',
|
||||
},
|
||||
plugins: [react()],
|
||||
define: {
|
||||
'process.env.API_KEY': JSON.stringify(env.GEMINI_API_KEY),
|
||||
'process.env.GEMINI_API_KEY': JSON.stringify(env.GEMINI_API_KEY)
|
||||
},
|
||||
resolve: {
|
||||
alias: {
|
||||
'@': path.resolve(__dirname, '.'),
|
||||
}
|
||||
}
|
||||
};
|
||||
});
|
||||
Reference in New Issue
Block a user