import fs from 'fs';
import Track from '../models/Track.js';

const removeFile = (file) => {
  if (!file?.path) {
    return;
  }

  fs.unlink(file.path, () => {});
};

export const uploadController = {
  async uploadTrack(req, res, next) {
    try {
      if (!req.userId) {
        removeFile(req.files?.cover?.[0]);
        removeFile(req.files?.audio?.[0]);
        return res.status(401).json({ success: false, message: 'Authentication required to upload' });
      }

      const { title, artist, album, genre } = req.body;

      if (!title || !artist || !album || !genre) {
        removeFile(req.files?.cover?.[0]);
        removeFile(req.files?.audio?.[0]);
        return res.status(400).json({ success: false, message: 'All fields are required' });
      }

      const coverFile = req.files?.cover?.[0];
      const audioFile = req.files?.audio?.[0];

      if (!coverFile || !audioFile) {
        removeFile(coverFile);
        removeFile(audioFile);
        return res.status(400).json({ success: false, message: 'Cover and audio files are required' });
      }

      if (coverFile.size > 5 * 1024 * 1024) {
        removeFile(coverFile);
        removeFile(audioFile);
        return res.status(400).json({ success: false, message: 'Cover image must be 5MB or smaller' });
      }

      const coverUrl = `/uploads/covers/${coverFile.filename}`;
      const audioUrl = `/uploads/audio/${audioFile.filename}`;

      const track = await Track.create({
        title,
        artist,
        album,
        genre,
        coverUrl,
        audioUrl,
        createdBy: req.userId,
      });

      return res.json({ success: true, data: track });
    } catch (error) {
      return next(error);
    }
  },
};