const Discord = require('discord.js');
const fs = require('fs');
const { REST } = require('@discordjs/rest')
const { Routes } = require('discord-api-types/v9')

const { Intents, Client, Collection } = require("discord.js");

const client = new Client({
    intents: [Intents.FLAGS.GUILDS, Intents.FLAGS.DIRECT_MESSAGES, Intents.FLAGS.GUILD_MESSAGES, Intents.FLAGS.GUILD_VOICE_STATES],
    partials: ["CHANNEL", "MESSAGE", "REACTION", "GUILD_MEMBER", "USER"]
})

const ytdl = require('ytdl-core');
const { SlashCommandBuilder } = require('@discordjs/builders')
const { joinVoiceChannel, createAudioPlayer, NoSubscriberBehavior, createAudioResource, StreamType, AudioPlayerStatus, AudioPlayer } = require('@discordjs/voice');
const ffmpeg = require('ffmpeg-static')

const queue = new Map();

const { prefix, token } = require('./config.json')

client.login(token)
client.commands = new Collection()

const eventsFolder = fs.readdirSync("./Events").filter(f => f.endsWith(".js"))

for (const fil of eventsFolder) {
    const file = require(`./Events/${fil}`)

    if (file.once) {
        client.once(file.name, (...args) => file.execute(...args, client))
    } else {
        client.on(file.name, (...args) => file.execute(...args, client))
    }
}

const commandFiles = fs.readdirSync('./Commands').filter(f => f.endsWith('.js'))

const commands = [];
const clientId = '694131404316999721'
const guildId = '849957133646954536'

for (const file of commandFiles) {
    const command = require(`./Commands/${file}`);
    client.commands.set(command.data.name, command);
    commands.push(command.data.toJSON())
}

const rest = new REST({ version: '9' }).setToken(token);

(async () => {
    try {
        console.log('Succesfully refreshing application (/) commands.')

        await rest.put(
            Routes.applicationGuildCommands(clientId, guildId),
            { body: commands }
        )

        console.log('Succesfully reloaded application (/) commands.')

    } catch (err) {
        console.error(err)
    }
})();

client.on('messageCreate', async msg => {
    if(!msg.guild) return;
    if(!client.application?.owner) await client.application?.fetch()

    if(msg.content.startsWith('!deploy') && msg.author.id === client.application?.owner?.id) {
        await msg.guild.commands.set([
            {
                name: 'play',
                description: 'Plays a song',
                options: [
                    {
                        name: 'song',
                        type: 'STRING',
                        description: 'The song you want to play',
                        required: true,
                    },
                ],
            },
        ]);

        await msg.reply('Deployed!')
    }
})

client.on('interactionCreate', async interaction => {

    if (!interaction.isCommand()) return;
    const cmd = interaction.commandName

    try {
        if (cmd === 'play' || cmd === 'p') {

            await interaction.defer()

            const songToPlay = interaction.options.get('song').value

            const voiceChannel = interaction.member.voice.channel

            const serverQueue = queue.get(interaction.guild.id);

            if (!voiceChannel) return interaction.reply(`You must be in a voice channel to play music!`)

            const songInfo = await ytdl.getInfo(songToPlay);
            const song = {
                title: songInfo.videoDetails.title,
                url: songInfo.videoDetails.video_url,
                thumbnail: songInfo.videoDetails.thumbnails,
            }

            if (!serverQueue) {

                const queueContruct = {
                    textChannel: interaction.channel,
                    voiceChannel: voiceChannel,
                    connection: null,
                    songs: [],
                    volume: 5,
                    playing: true,
                }

                queue.set(interaction.guild.id, queueContruct)

                queueContruct.songs.push(song)

                try {
                    var connection = joinVoiceChannel({
                        channelId: voiceChannel.id,
                        guildId: interaction.guild.id,
                        adapterCreator: interaction.guild.voiceAdapterCreator
                    })

                    interaction.reply({content: 'Looking for the song!'})

                    play(song, interaction.guild, client, interaction, connection)
                } catch (err) {
                    console.error(err)
                    queue.delete(interaction.guild.id)
                    return interaction.reply({ content: 'There was an error while executing this command!', ephemeral: true })
                }

            } else {
                serverQueue.songs.push(song);
                const addedEmbed = new Discord.MessageEmbed()
                    .setTitle(`ADDED TO QUEUE`)
                    .setDescription(`[${song.title}](${song.url}) [${interaction.member}]`)
                    .setThumbnail(song.thumbnail[0].url)
                    .setFooter(`©️ Soundy Studios | All rights reserved!`, `https://cdn.discordapp.com/attachments/861355381774221312/881284765842542592/Soundy_Studios.png`)
                return interaction.reply({ embeds: [addedEmbed] })
            }
        }
    } catch (error) {
        if (error) console.error(error);
        await interaction.reply({ content: 'There was an error while executing this command!', ephemeral: true });
    }
});

function play(song, guild, client, interaction, connection) {
    const serverQueue = queue.get(guild.id)

    if(!song) {
        connection.destroy();
        queue.delete(guild.id)
    }

    const player = createAudioPlayer({
        behaviors: {
            noSubscriber: NoSubscriberBehavior.Pause,
        }
    })

    const stream = ytdl(song.url, { filter: 'audioonly' })
    const resource = createAudioResource(stream, { inputType: StreamType.Arbitrary })

    player.play(resource)

    connection.subscribe(player)

    player.on('error', async error  => {
        interaction.followUp({ content: 'An error occured playing that song, skipping song!'})
    })
    player.on(AudioPlayerStatus.Idle, async () => {
        serverQueue.songs.shift();
        play(serverQueue.songs[0], guild, client, interaction, connection)
    })
    player.on(AudioPlayerStatus.Playing, () => {
        const playEmbed = new Discord.MessageEmbed()
        .setTitle(`NOW PLAYING`)
        .setDescription(`[${song.title}](${song.url}) [${interaction.member}]`)
        .setThumbnail(song.thumbnail[0].url)
        .setFooter(`©️ Soundy Studios | All rights reserved!`, `https://cdn.discordapp.com/attachments/861355381774221312/881284765842542592/Soundy_Studios.png`)
    interaction.followUp({ embeds: [playEmbed] })
    })
}