<?php

class GateModule
{
	private const GUEST = ['login', 'register'];

	public static function handle()
	{
		$s = App::$req->uri(1) ?? ''; // second segment
		$m = App::$req->method; // request method

		if (App::auth() && in_array($s, self::GUEST)) redirect('/');

		if ($s == '' || $s == 'login') return self::login($m);
		if ($s == 'logout' && $m == 'POST') return self::logout();
	}

	public static function login(string $method)
	{
		// just display the login page
		if ($method == 'GET') {
			echo render('layout', ['title' => 'Login', 'content' => 'gate/login']);
			return;
		}

		// handle the login form
		$id = trim($_POST['id'] ?? ''); // identifier; let a user log in with email or username
		$pw = $_POST['pw'] ?? ''; // password

		// fields are required
		if (empty($id) || empty($pw)) {
			App::flash('error', 'Please fill out all fields.');
			redirect('/gate/login');
		}

		// find the user, login if valid
		$found = App::$auth->login($id, $pw, isset($_POST['remember']));

		// Login is valid!
		if ($found) {
			App::flash('success', 'Welcome back!');
			redirect('/');
		} else {
			App::flash('error', 'Player account not found.');
			redirect('/gate/login');
		}
	}

	private static function logout()
	{
		App::$auth->logout();
		App::flash('success', 'You have been logged out.');
		redirect('/');
	}
}