const tmi = require("tmi.js");
const convert = require("color-convert");
const chalk = require("chalk");

const sleep = (waitTimeInMs) => new Promise(resolve => setTimeout(resolve, waitTimeInMs));

let hue = 48;
let sat = 89;
let light = 50;

let connected = false;

if (!process.env.TWITCH_BOT_KEY || !process.env.TWITCH_BOT_USERNAME) {
	console.log(
		"TWITCH_BOT_KEY and TWITCH_BOT_USERNAME must be available as environment variables"
	);
	process.exit(1);
}

const colorMode = process.env.TWITCH_BOT_COLOR_MODE || "loop";

const client = new tmi.Client({
	connection: {
		reconnect: true,
		secure: true
	},
	identity: {
		username: process.env.TWITCH_BOT_USERNAME,
		password: process.env.TWITCH_BOT_KEY
	},
	channels: [process.env.TWITCH_BOT_USERNAME.toLowerCase()]
});

client.on("connected", onConnected);
client.on("disconnected", onDisconnected);

client.connect();

function onConnected(addr, port) {
	console.log(`* Connected to ${addr}:${port}`);

	connected = true;
	updateColor();
}

function onDisconnected(reason) {
	console.log(`* Disconnected: ${reason}`);

	connected = false;
}

function generateRandomColor() {
	hue = Math.floor(Math.random() * 360);
	sat = 20 + Math.floor(Math.random() * 60);
	light = 40 + Math.floor(Math.random() * 40);
}

function incrementColorLoop() {
	if (hue < 351) {
		hue += 2;
	} else {
		hue = 0;
	}
}

function updateColor() {
	if (!connected) {
		console.log('tried to update color while not connected.');
		return;
	}

	if (colorMode === "random") {
		generateRandomColor();
	} else {
		incrementColorLoop();
	}

	const color = convert.hsl.hex(hue, sat, light);
	console.log(
		`* Updating username color to`,
		chalk.hex(`#${color}`)(`#${color}`)
	);
	client.color(`#${color}`);
}

const intervalTime = process.env.TWITCH_BOT_INTERVAL * 1000 || 10000;

interval = setInterval(function () {
	updateColor();
}, intervalTime);