const { addToQueue, playNextInQueue } = require('../utils/queueManager');
const { exec } = require('child_process');
const { v4: uuidv4 } = require('uuid');
const path = require('path');
const { EmbedBuilder } = require('discord.js');
const fetch = require('node-fetch');
const fs = require('fs');

module.exports = {
    name: 'play',
    description: 'Play a song from YouTube, a URL, or an uploaded MP3 file',
    async execute(message, args) {
        const searchQuery = args.join(' ');
        const voiceChannel = message.member.voice.channel;

        if (!voiceChannel) {
            return message.reply('You need to be in a voice channel to play music!');
        }

        let url, title, tempFilePath;

        try {
            if (message.attachments.size > 0) {
                const attachment = message.attachments.first();

                if (attachment.name.endsWith('.mp3')) {
                    title = attachment.name;
                    tempFilePath = path.join(__dirname, '../utils/tmp', `${uuidv4()}.mp3`);

                    const response = await fetch(attachment.url);
                    const buffer = await response.buffer();
                    fs.writeFileSync(tempFilePath, buffer);

                    const embed = new EmbedBuilder()
                        .setColor('#0099ff')
                        .setTitle('Now Playing')
                        .setDescription(`**${title}**`)
                        .setFooter({ text: `Requested by ${message.author.username}`, iconURL: message.author.displayAvatarURL() })
                        .setTimestamp();

                    message.channel.send({ embeds: [embed] });

                    addToQueue(message.guild.id, tempFilePath, title);
                    playNextInQueue(message.guild.id, voiceChannel);
                    return;
                } else {
                    return message.reply('Only MP3 files are supported for uploads.');
                }
            }

            if (isValidURL(searchQuery)) {
                url = searchQuery;
                if (url.endsWith('.mp3')) {
                    title = path.basename(url);
                    tempFilePath = path.join(__dirname, '../utils/tmp', `${uuidv4()}.mp3`);

                    const response = await fetch(url);
                    const buffer = await response.buffer();
                    fs.writeFileSync(tempFilePath, buffer);
                } else {
                    tempFilePath = path.join(__dirname, '../utils/tmp', `${uuidv4()}.mp3`);
                    title = await downloadWithYtDlp(url, tempFilePath);
                }
            } else {
                const searchUrl = `ytsearch:${searchQuery}`;
                const searchResult = await getYtDlpInfo(searchUrl);

                if (!searchResult || !searchResult.entries || searchResult.entries.length === 0) {
                    return message.reply('No results found for your search query.');
                }

                url = searchResult.entries[0].webpage_url;
                title = searchResult.entries[0].title;

                tempFilePath = path.join(__dirname, '../utils/tmp', `${uuidv4()}.mp3`);
                await downloadWithYtDlp(url, tempFilePath);
            }

            const embed = new EmbedBuilder()
                .setColor('#0099ff')
                .setTitle('Now Playing')
                .setDescription(`**${title}**`)
                .setFooter({ text: `Requested by ${message.author.username}`, iconURL: message.author.displayAvatarURL() })
                .setTimestamp();

            message.channel.send({ embeds: [embed] });

            addToQueue(message.guild.id, tempFilePath, title);
            playNextInQueue(message.guild.id, voiceChannel);

        } catch (error) {
            console.error('yt-dlp error:', error);
            message.reply('Failed to retrieve or download the video. Please try again.');
        }
    },
};

function isValidURL(string) {
    try {
        new URL(string);
        return true;
    } catch (_) {
        return false;
    }
}

function downloadWithYtDlp(url, output) {
    return new Promise((resolve, reject) => {
        const command = `yt-dlp --cookies ${path.join(__dirname, '../cookies.txt')} --format bestaudio --output ${output} --quiet --verbose "${url}"`;
        exec(command, (error, stdout, stderr) => {
            if (error) {
                reject(`yt-dlp error: ${stderr}`);
            } else {
                resolve(output);
            }
        });
    });
}

function getYtDlpInfo(url) {
    return new Promise((resolve, reject) => {
        const command = `yt-dlp --dump-single-json "${url}"`;
        exec(command, (error, stdout, stderr) => {
            if (error) {
                reject(`yt-dlp info error: ${stderr}`);
            } else {
                resolve(JSON.parse(stdout));
            }
        });
    });
}