class IMAPController {
	constructor (socket, tag) {
		this.socket = socket;
		this.tag = tag;
	}
	
	out (answer) {
		this.socket.write(`${this.tag} ${answer}`);
	}
	
	untaggedOut (answer) {
		this.socket.write(answer);
	}
	
	close () {
		this.socket.end();
	}
}

class Commands {
	constructor (client) {
		this.client = client;
	}
	
	async capability (args, controller) {
		/*if (args.length > 0)
			return out();*/
		controller.untaggedOut("* CAPABILITY IMAP4rev1 STARTTLS LOGINDISABLED\r\n");
		controller.out("OK CAPABILITY completed\r\n");
	}
	
	async logout(args, controller) {
		controller.untaggedOut("* BYE Logging out\r\n");
		controller.out("OK LOGOUT completed\r\n");
		
		controller.close();
	}
}

class Client {
	constructor (socket) {
		this.socket = socket;
		this.commands = new Commands(this);
	}
	
	command (tag, command, args) {
		//console.debug("this >>", this, this.socket, this.commands);
		const cmd = this.commands[command.toLowerCase()];
		if (cmd === undefined) {
			return this.socket.write(`${tag} BAD unknown command\r\n`);
		}
		cmd.call(this.commands, args, new IMAPController(this.socket, tag));
	}
}

module.exports = { Client };