#!/usr/bin/env node

const net = require("net");
const util = require("util");
const protocol = require("./protocol.js");
const keyboard = require("./keyboard.js");

if (process.argv.length != 4) {
	console.log("Usage: ./client.js <hostname> <port>");
	console.log("Pass address of doomrooms server as arguments.");
	process.exit(1);
}

const GAME_ID = "tictactoe-tom";

keyboard.init();

function fatalError(err) {
	console.log("A fatal error occurred:");
	console.log(" ", err);
	process.exit(1);
}

function showMenu(title, options) {
	return new Promise(async (resolve, reject) => {
		console.log(title);
		for (let i = 0; i < options.length; i++) {
			console.log(" " + (i + 1) + ") " + options[i]);
		}
		while (true) {
			const line = await keyboard.prompt("> ");
			const num = parseInt(line.trim(), 10);
			if (num >= 1 && num <= options.length) {
				resolve(num - 1);
				break;
			}
			console.log(
					"That's an invalid choice. " +
					"Please enter a number between 1 and " + options.length + ".");
		}
	});
}

function messageHandler(msg) {
	console.log("Message: " + util.inspect(msg));
}

const conn = new protocol.Connection(net.createConnection(+process.argv[3], process.argv[2]), messageHandler);
conn.conn.on("connect", async () => {
	console.log("Connected to Doomrooms.");
	let choice = await showMenu("Register or log in?", ["Register new account", "Log in to existing account"])
	const username = await keyboard.prompt("Username: ");
	const password = await keyboard.prompt("Password: ");
	let msg;
	if (choice == 0) {
		msg = await conn.send(new protocol.Message("make-player", username, password));
	} else {
		msg = await conn.send(new protocol.Message("login", username, password));
	}
	if (msg.err) fatalError(msg.err);
	console.log(msg);

	msg = await conn.send(new protocol.Message("set-game", GAME_ID));
	if (msg.err) fatalError(msg.err);

	setTimeout(() => {process.exit(0);}, 2000);
});