require('dotenv').config();
const { Client, MessageEmbed, Collection } = require('discord.js');
const fetch = require('node-fetch');
const ytdl = require('ytdl-core');
const ytSearch = require('yt-search');

const client = new Client();
const CMD_PREFIX = "!"
client.on('message', (message) => {
    if (message.author.bot) return;
    if (message.content.startsWith(CMD_PREFIX)) {
        const commandReply = parseCMD(message);
        if (commandReply && (typeof commandReply != "object")) {
            message.reply(commandReply);
        } else if(!commandReply){
            generateConfusionGif(message);
        }

    } else {
        const replyMessage = parseCasualMessage(message);
        if (replyMessage) {
            message.reply(replyMessage);
        } else {

        }
    }
});

function parseCasualMessage(message) {
    const { content } = message;
    switch (content.trim().toLowerCase()) {
        case 'hello':
        case 'hi':
            return `Hey ${message.author} 🙋‍♂️. How Are You?`;
        case 'ഹലോ':
        case 'ഹി':
            return `ഹല്ലാ.... ഇതാരാ ${message.author}യോ... സുഖം തന്നെ?`;
        case 'എന്തൊക്കെ ഉണ്ട് വിശേഷം':
        case 'enthokke und vishesham':
        case 'enthokkeyund vishesham': return `അങ്ങിനെ പോണു...🤷‍♂️ സുഖങ്ങളൊക്കെ തന്നെ?`;
        case 'മനുസ്സനല്ലേ പുള്ളെ':
        case 'manusanalle pulle': return `ഇറച്ചിയും ബറോട്ടയും വേണായിരിക്കും... 🤣🤣🤣`;
        case 'നീ ആരാ':
        case 'nee araa': return `താൻ ആരാണെന്ന് തനിക്ക് അറിയാന്മേലെങ്കിൽ താൻ എന്നോട് ചോയ്ക്ക് താൻ ആരാണെന്ന്??? തനിക്ക് ഞാൻ പറഞ്ഞു തരാം താൻ ആരാണെന്ന്... 🤪🤪`;
        default: return null;
    }
}

function generateConfusionGif(message) {
    message.channel.startTyping();
    const embed = new MessageEmbed()
        .setDescription(`I dont understand what you are saying <@${process.env.KLIAS_TAG}> do you know what this guy is asking?`)
        .setColor("RANDOM");
    const randomIndex = Math.floor(Math.random() * 9);
    fetch(`https://api.tenor.com/v1/random?key=${process.env.TENOR_TOKEN}&q=I%20dont%20understand&limit=10`)
        .then(res => res.json())
        .then(response => {
            embed.setImage(response.results[randomIndex].media[0].gif.url);
            message.channel.stopTyping();
            message.channel.send(embed);
        });
}

function parseCMD(message) {
    const [CMD_NAME, ...args] = message.content
        .trim()
        .substring(CMD_PREFIX.length)
        .split(/\s+/);
    switch (CMD_NAME) {
        case 'jokes': randomJokes(message); return {};
        case 'play' : playMusik(message, args); return {};
        case 'stop' : stopMusik(message); return {};
        default: return null;
    }
}

function randomJokes(message) {
    message.channel.startTyping();
    fetch(`https://official-joke-api.appspot.com/jokes/random`)
    .then(res => res.json())
    .then(response => {
        message.channel.stopTyping();
        if(response) {
            message.channel.startTyping();
            message.reply(response.setup);
            setTimeout(() => {
                message.channel.stopTyping();
                message.reply(response.punchline);
            }, 5000)
        }  

        console.log(response);
    })
}

async function playMusik(message, args) {
    const voiceChannel = message.member.voice.channel;
    if (!voiceChannel) {
        return message.channel.send("Join a voice channel to Play Music");
    }
    const permission = voiceChannel.permissionsFor(message.client.user);
    if(!permission.has('CONNECT') || !permission.has('SPEAK')) {
        return  message.channel.send("You don't have the permission to play music. 😥");
    }

    if(!args.length) {
        return message.channel.send("Please pass something to play as second argument");
    }

    const connection = await voiceChannel.join();
    const video = await searchVideo(args.join(' '));

    if(video) {
        const youtubeStream = ytdl(video.url, {filter: 'audioonly'});
        connection.play(youtubeStream, {seek: 0, volume: 1})
            .on('finish', () => {
                voiceChannel.leave();
            });
        await message.reply(`Now Playing ${video.title}...`);
    } else {
        message.channel.send("No music found to play for you mate. Try again! 👍");
    }
}

async function stopMusik(message) {
    const voiceChannel = message.member.voice.channel;

    if (!voiceChannel) {
        return message.channel.send("Join a voice channel to Execute this command");
    }

    await voiceChannel.leave();
    await message.channel.send("Stoping Music... Baye Baye.... 😅");
}

async function searchVideo(query) {
    const searchResult = await ytSearch(query);
    return (searchResult.videos.length > 1) ? searchResult.videos[0] : null;
}

client.login(process.env.LUL_BOT_TKN)
    .then(() => {
        console.log("BOT Logged in");
    })
    .catch((error) => {
        console.error("BOT Login Failed ", error);
    });