import { showNotification, _ } from './utils.js';

export async function generateAndDownloadSingleM3U(mediaItem) {
    try {
        if (!mediaItem || !mediaItem.streamUrl || !mediaItem.title) {
            showNotification(_('invalidMediaItemForM3U'), 'error');
            return;
        }

        const duration = mediaItem.duration ? Math.round(mediaItem.duration / 1000) : -1;
        const tvgLogo = mediaItem.thumb ? `tvg-logo="${mediaItem.thumb}"` : '';
        const groupTitle = mediaItem.seriesTitle && mediaItem.seasonNumber 
            ? `group-title="${mediaItem.seriesTitle} - Season ${mediaItem.seasonNumber}"` 
            : `group-title="${mediaItem.title}'`; // Fallback to title for group-title

        let m3uContent = '#EXTM3U\n';
        m3uContent += `#EXTINF:${duration} ${tvgLogo} ${groupTitle},${mediaItem.title}\n`;
        m3uContent += `${mediaItem.streamUrl}\n`;

        const blob = new Blob([m3uContent], { type: 'audio/x-mpegurl;charset=utf-8' });
        const url = URL.createObjectURL(blob);
        const a = document.createElement('a');
        a.href = url;
        a.download = `${mediaItem.title}.m3u`;
        document.body.appendChild(a);
        a.click();
        document.body.removeChild(a);
        URL.revokeObjectURL(url);

        showNotification(_('m3uDownloadedSuccess'), 'success');

    } catch (error) {
        console.error(_('errorGeneratingM3uFile'), error);
        showNotification(_('errorGeneratingM3uFile'), 'error');
    }
}