var RedditRadio = require("./RedditRadio");
var toml = require("toml");
var fs = require("fs");
var Radio = require("./Radio");

class Startup
{
	constructor()
	{
		this.RADIO = 'radio';
		this.RADIOS = 'radios';
		this.NO_RADIO = 'no-radio';
		this.REGULAR_BOT = 'regular-bot';

		this.radios = [];

		let configFile = process.env.CONFIG_FILE || "config.toml";
		this.config = toml.parse(fs.readFileSync(configFile, "utf8"));
	}

	run()
	{
		let args = this.parseArgs();
		switch (args.type) {
			case this.RADIO: this.setupRadio(args.name); break;
			case this.RADIOS: this.setupRadios(); break;
			case this.NO_RADIO: this.setupNoRadio(); break;
			default: this.startBot(this.config); break;
		}
	}

	setupNoRadio()
	{
		let config = this.config;
		delete config.radios;
		this.startBot(config);
	}

	setupRadio(name)
	{
		if (this.config.radios === undefined) {
			console.error('No radios are defined in the config file, exiting...');
			process.exit(1);
		}
		for (let i = 0; i < this.config.radios.length; i++) {
			if (this.config.radios[i].name === name) {
				this.startRadio(this.config.radios[i]);
				break;
			}
		}
		this.setupSignals();
	}

	setupRadios()
	{
		for (var i = 0; i < this.config.radios.length; i++) {
			this.startRadio(this.config.radios[i]);
		}
		this.setupSignals();
	}

	startRadio(radioConfig)
	{
		this.radios.push(new Radio(this.config, radioConfig));
	}

	startBot(config)
	{
		this.bot = new RedditRadio(config);
		this.bot.start();

		this.setupSignals();
	}

	setupSignals()
	{
		var stopHandler = () => {
			if (this.bot) {
				this.bot.stop();
			}
			for (var i = 0; i < this.radios.length; i++) {
				this.radios[i].stop();
			}
		};
		process.on("SIGINT", stopHandler); // Ctrl+C
		process.on("SIGTERM", stopHandler); // Terminate
	}

	parseArgs()
	{
		let args = process.argv.splice(2);
		switch (args[0]) {
			case '--radio': return { type: this.RADIO, name: args[1]};
			case '--radios': return { type: this.RADIOS };
			case '--no-radios': return { type: this.NO_RADIO };
			default: return { type: this.REGULAR_BOT };
		}
	}
}

module.exports = Startup;