<?php

if (!defined('ABSPATH')) {
    exit;
}

class AlmefyRegisterEndpoint
{

    public function __construct()
    {
        $this->api();
    }

    private function api()
    {
        add_action('rest_api_init', function () {
            register_rest_route('almefy/v1', '/register', [
                'methods' => 'POST',
                'permission_callback' => '__return_true',
                'callback' => function ($request) {

                    // API Has been disabled in backend
                    $api_enabled = get_option('almefy-api-enabled') == 1;
                    // $registration_enabled = get_option('almefy-mail-connect-on-register') == 1;
                    if (!$api_enabled) {
                        return new WP_Error('disabled', __('Registration via Almefy has been disabled by an administrator.', 'almefy-me'));
                    }

                    $client = AlmefyManager::$client;
                    // Check if API set up correctly
                    if ($client == null) {
                        return new WP_REST_Response(__('Sorry, the almefy API data is incorrect!', 'almefy-me'), 500);
                    }

                    // body params
                    $username = $request['username'];
                    $email = $request['email'];

                    if ($email == null || !is_email($email)) {
                        return new WP_REST_Response(__('Sorry, email missing or invalid!', 'almefy-me'), 400);
                    }

                    if ($username == null) {
                        $username = $email;
                    }

                    // Create Wordpress user if not exists
                    $user_id = wp_create_user($username, wp_generate_password(64), $email);

                    // false = 'new account' email, true = 'new device' 
                    $resend = false;

                    if (is_wp_error($user_id)) {
                        $error_code = $user_id->get_error_code();
                        if($error_code === "existing_user_login") {
                            $resend = true;
                        } else {
                            return new WP_REST_Response($user_id->get_error_message(), 400);
                        }
                    }

                    try {
                        $success = AlmefyMailer::send_enrollment($email, $resend);
                        
                        if(!$success) {
                            return new WP_REST_Response(__('Wordpress could not send this email. Is Wordpress configured correctly?', 'almefy-me'), 500);
                        }
                        return;
                    } catch (\Almefy\Exception\TransportException $e) {
                        return new WP_REST_Response(__('Could not connect to Almefy service.', 'almefy-me'), 500);
                    }

                    // wp_set_current_user($user_id);
                    // wp_set_auth_cookie($user_id, true, is_ssl());
                    // wp_redirect("/", 301);

                    // TODO: return redirect url?

                    // return admin_url('/users.php?page=almefy-device-manager');
                }
            ]);
        });
    }
}