// app/api/music/tracks/route.ts
import { NextResponse } from 'next/server';
import { readdir } from 'fs/promises';
import { join } from 'path';

export const dynamic = 'force-dynamic';

interface Track {
  title: string;
  fileName: string;
  artist: string;
  theme: string;
}

function parseFileName(fileName: string): Track {
  // Remove file extension
  const nameWithoutExt = fileName.replace(/\.(mp4|mp3|wav|ogg)$/i, '');
  
  // Parse format: [music_name]_[theme/genre].[format]
  const parts = nameWithoutExt.split('_');
  
  if (parts.length >= 2) {
    const theme = parts[parts.length - 1].toLowerCase();
    const title = parts.slice(0, -1).join(' ');
    
    return {
      title: title.replace(/-/g, ' ').replace(/\b\w/g, l => l.toUpperCase()),
      fileName: fileName,
      artist: theme.charAt(0).toUpperCase() + theme.slice(1) + ' Collection',
      theme: theme
    };
  }
  
  // Fallback for files that don't follow the naming convention
  return {
    title: nameWithoutExt.replace(/-|_/g, ' ').replace(/\b\w/g, l => l.toUpperCase()),
    fileName: fileName,
    artist: 'Unknown Artist',
    theme: 'general'
  };
}

export async function GET() {
  try {
    // Path to your music directory
    const musicDir = join(process.cwd(), 'public', 'files', 'music');
    
    // Read all files in the directory
    const files = await readdir(musicDir);
    
    // Filter for audio/video files and parse them
    const tracks = files
      .filter(file => /\.(mp4|mp3|wav|ogg)$/i.test(file))
      .map(file => parseFileName(file))
      .sort((a, b) => {
        // Sort by theme first, then by title
        if (a.theme !== b.theme) {
          return a.theme.localeCompare(b.theme);
        }
        return a.title.localeCompare(b.title);
      });
    
    return NextResponse.json({ tracks });
  } catch (error) {
    console.error('Error reading music directory:', error);
    
    // Return fallback tracks if directory reading fails
    return NextResponse.json({ 
      tracks: [
      ]
    });
  }
}