YouTube 文字起こし

// yt-transcript.js
// Note: This relies on the 'youtube-transcript' library.
// Run: npm install youtube-transcript

const { YoutubeTranscript } = require('youtube-transcript');

module.exports = async function(context) {
    const videoUrl = context.args[0];
    if (!videoUrl) return { error: "Please provide a YouTube URL" };
    
    try {
        const transcript = await YoutubeTranscript.fetchTranscript(videoUrl);
        const text = transcript.map(t => t.text).join(' ');
        
        // Return truncated text if too long
        return {
            summary: text.substring(0, 2000) + "...",
            fullLength: text.length
        };
    } catch (e) {
        return { error: e.message };
    }
};