// *** Libraries to import ***
const { Client, Events, GatewayIntentBits } = require('discord.js');
const Voice = require('@discordjs/voice');
const { createReadStream, existsSync } = require('fs');
//const play = require('play-dl');
// Local config files to import
const { token } = require('./.data/config.json');

// Declare a new Discord Client Instance
const client = new Client( { intents: [GatewayIntentBits.Guilds, GatewayIntentBits.GuildMessages, GatewayIntentBits.MessageContent, GatewayIntentBits.GuildVoiceStates] } );

// Define Sigtrap Callback for clean shutdowns
function signalExit(signal) {
	console.log(`\tCaught ${signal}`);
	// Close the client cleanly
	client.destroy();
	// And exit cleanly
	process.exit(0);
}
// Subscribe to a few signal events
process.on('SIGINT', signalExit); // For Ctrl-C when running in a TTY
process.on('SIGTERM', signalExit); // for systemd's stopping of services

// Define Discord Callbacks
// Phone Home when the process is started successfully
client.on( Events.ClientReady, c => {
	console.log(`Logged in Successfully as ${c.user.tag}`);
	// Signal via discord that we are alive
	client.channels.fetch("860393205401255936")
		.then( papi => papi.send('hello papi') );
});
// In order to leave a voice channel when its just us we need to process every voice change state in a guild we are in
client.on( Events.VoiceStateUpdate, async (oldState, newState) => {
	// We can limit the exposure to only looking at oldState, the channel the user left
	if(!oldState.channel) return; // User was not in a channel, this is probably a join
	if(!oldState.channel.members.has(client.user.id)) return; // We are not in this channel
	// grab the members, filtering out bots
	const members = oldState.channel.members.filter(m => !m.user.bot);
	if(members.size) return; // There are still others in the channel
	const connection = Voice.getVoiceConnection(oldState.channel.guild.id);
	connection.destroy();
});
// In order to process text commands we need to process every message sent in a guild we are in
client.on( Events.MessageCreate, async message => {
	if (message.content.match(/[\/;]/)) return; // we had to add '/' because moose tried to 'play' ../../../../etc/shadow
	// Variables that may be useful
	const d = new Date(); // Today's date and timestamp

	// *** Filter Section ***

	// Prevent any triggering if the message is our own
	if( message.author.id === "860345552742907935" ) return;
	//TODO: Also ignore other bots? message.author.bot
	// In the event of a DM...
	if (message.guild == null) {
		switch (message.author.id) {
			case "262406433201586177": // Weegee
			case "137358406821347328": // moosecrap
			case "144317130026778624": // Piroglith
			case "137293315883139072": // tks_ftw
			case "172538370440953867": // Brightland
			case "183009699300507648": // spamminn
			case "209154502412992514": // NariNaju
			case "198278682677084160": // DrunkZombie
			case "137349560610586624": // craze
			case "305491553198145539": // Sam
			case "174356437550497792": // NoobWantsHacks
			case "308412988329558017": // Revanite
				// TODO: Recieve sound files from trusted parties?
				return;
			default:
				console.log(`Ignoring DM from ${message.author.tag}: ${message.content}`);
				return;
		}
	}
	// Filter Authorized Guilds
	switch (message.guild.id) {
		case "860344888301846538": // ZeSkypeBot Incubator
		case "305204527152365581": // Goldar Squad
			break;
		default:
			console.log(`Message from Unauthorized Guild ${message.guild.name}!`);
			return;
	}

	// *** Process Section ***

	// Check for the shut up message
	if (message.content === "~") {
		console.log(`!stop issued by ${message.author.tag}`);
		if (!message.member.voice.channel) {
			message.channel.send('you can\'t stop the party if you\'re not here');
		} else {
			const connection = Voice.getVoiceConnection(message.guild.id);
			connection.destroy();
		}
		return;
	}
	// Check for youtube play command
/*	if (message.content.startsWith('!play') && message.member.voice.channel) {
		console.log(`!play issued by ${message.author.tag} ${message.author.id}`);
		// Determine if we have a URL or a search term
		const ytmatch = message.content.match(/(?<=(?:https?:\/\/)(?:www\.)?youtu(?:(?:be\.com\/(?:(?:watch\?v=)|(?:shorts\/)))|(?:\.be\/)))[\w-]{11,12}/);
		var yturl = null;
		var timestamp = '0'
		if (ytmatch) {
			console.log(`ytmatch yields ${ytmatch[0]}`);
			// Message matches the youtube video regex, see if it comes with a timestamp
			const timematch = message.content.match(/(?<=t=)(\d{1,4})s?(?=$)/);
			if (timematch) {const connection = Voice.getVoiceConnection(message.guild.id);
			connection.destroy();
				console.log(`timematch yields $timematch[1]`);
				timestamp = timematch[1];
			}
			// Reconstruct a URL for the supplied video
			yturl = `https://youtu.be/${ytmatch[0]}`;
		} else {
			// Message may be a search term
			let args = message.content.split('play ')[1];
			console.log(`ytsearch args: "${args}"`);
			// Search youtube with the term
			let yt_info = await play.search(args, { limit: 1 });
			// and get the first result as a URL
			yturl = yt_info[0].url;
			// Link it to the chat
			message.channel.send(`Found video ${yturl} hope its what you were looking for`);
		}
		console.log(`yturl: ${yturl}`);
		// Create a stream reference to the provided URL
		const stream = await play.stream(yturl, {
			seek: timestamp
		});
		// Now that we have a stream reference we can join the channel and play
		const connection = Voice.joinVoiceChannel({
			channelId: message.member.voice.channel.id,
			guildId: message.guild.id,
			adapterCreator: message.guild.voiceAdapterCreator,
		});
		// Open the stream as a voice resource
		const resource = Voice.createAudioResource(stream.stream, { inputType: stream.type });
		// Create a player to play the resource
		const player = Voice.createAudioPlayer();
		// Play the resource through the player (i hate discord v16)
		player.play(resource);
		// Connect the player to the voice connection (internal screaming intensifies)
		connection.subscribe(player);
		// Setup Callbacks for when the player completes
		return;
	} */
	if (message.content.match( "!new" )) {
		const response = 'got tired of getting left in voice calls all night\n'
		message.channel.send(response);
		return;
	}
	if (message.content.match( "!help" )) {
		console.log(`!help issued by ${message.author.tag} ${message.author.id}`);
		var response = 'ZeSkypeBot v7.2.5 \'What Year is it?\'\n';
		response += 'Original by @moosecrap for Skype, Remade by @fredstonemason for Discord\n';
		response += 'Changelog:\n';
		response += 'v4.2.4 First Update in 18 months, !play has been ripped out. Discord.js 14 updated to latest to fix no sound audio\n';
		response += 'v7.2.1	Added !echo to try and deduce why theres lag in commands\n';
		response += 'v7.2.0	Attempts to fix seemingly random searches, now should support age-restricted videos\n';
		response += 'v7.1.0	Added support for searching in !play\n'
		response += 'v7.0.0	Update to Discord.js 14\n';
		response += 'v6.1.0	Update to Discord.js 13, replaced ytdl-core-discord with play-dl\n';
		response += 'v6.0.6	Changes to !play regex in pursuit of playing at timestamps\n';
		response += 'v6.0.5	Added feedback for cases where ytdl crashes\n';
		response += 'v6.0.3	Changed !play regex per user feedback and counterexamples\n';
		response += 'v6.0.2	Removed response to voiceless sound commands, for being too spammy\n';
		response += 'v6.0.1	Added !play for youtube videos\n';
		response += 'v6.0.0	Public release, plays sounds from Goldar Squad\'s collection of micspam audio files.  No list will be provided\n';
		response += 'Commands:\n';
		response += '~		stop any sounds in progress and disconnect from voice\n';
		response += '!help	print this message\n';
		response += 'To play Sounds, first join a voice channel then send a message in the text chat with the name of the sound\n';
//		response += '!play [youtube url]	play a youtube video over chat\n';
//		response += '!play [search terms]	play the first video that comes up after searching youtube with your terms\n';
		message.channel.send(response);
		return;
	}
	if (message.content.match( "!echo" )) {
		var response = 'Debug Timers:\n```';
		response += `Discord Timestamp: ${message.createdAt.toISOString()}\n`;
		response += `Local event start: ${d.toISOString()}\n`;
		d = new Date();
		response += `Local event now:   ${d.toISOString()}\n`;
		response += `Online Since:      ${client.readyAt.toISOString()}\n`;
		response += '```';
		message.channel.send(response);
		return;
	}
	// Generic message responses
	if (message.content.match(/https:\/\/ootbingo\.github\.io/)) {
		var response = 'ooh its bingo time, i call ';
		if (Math.floor(Math.random()*2)) { response += 'over'; }
		else { response += 'under'; }
		response += ' on gateskip';
		message.channel.send(response);
		return;
	}
	// Try to find a sound file that matches the message
	if(message.content.match(' ')) return;
	// Construct the expected sound path
	var soundPath = '';
	if( d.getMonth() == 3 && d.getDate() == 1 ) {
			// TODO: april fools!
			// Scan the directory as an array
			// select randomly from the array
			// play that sound instead
	}
	else soundPath = `./Sounds/${message.content}.ogg`;
	if (message.author.id === "172538370440953867") {
		switch(message.content) {
			case "butthash":
				message.react('859687015247511561');
			default:
		}
	}
	if (message.author.id === "144317130026778624") {
		switch(message.content) {
			case "daytona":
			case "e":
				if ([0,5,6].includes(d.getDay()) && Math.random() < 0.8) return;
			default:
		}
	}
	// Test if there is a file at the expected path
	if (existsSync(soundPath)) {
		// Get the VoiceChannel of the sender if there is one
		const channel = message.member.voice.channel;
		if (!(channel && channel.joinable && channel.speakable)) return;
		console.log(`Sound '${message.content}' issued by ${message.author.tag} ${message.author.id}`);
		// 
		// Join the Voice Channel of the author
		const connection = Voice.joinVoiceChannel({
			channelId: channel.id,
			guildId: message.guild.id,
			adapterCreator: message.guild.voiceAdapterCreator,
		});
		// Create an audio player for the desired sound
		const resource = Voice.createAudioResource(createReadStream(soundPath));
		const player = Voice.createAudioPlayer();
		// Play the resource through the player to the connection (i hate discord v16)
		player.play(resource);
		// Connect the player to the voice connection (internal screaming intensifies)
		connection.subscribe(player);
	
		return;
	}
});
// Now our client is prepared, we can log in.
client.login(token);