<?php
/**
 * Created by PhpStorm.
 * User: mher
 * Date: 9/15/17
 * Time: 1:24 PM
 */


namespace Tenweb_Manager {


  include_once TENWEB_INCLUDES_DIR . '/class-user.php';

  class Login {

    protected static $instance = null;

    private $domain_id;
    private $access_token = false;
    private $refresh_token = false;
    private $error_logs = array();

    protected function __construct(){
      $access_token = get_site_option(TENWEB_PREFIX . '_access_token');
      $refresh_token = get_site_option(TENWEB_PREFIX . '_refresh_token');

      $this->access_token = !empty($access_token) ? $access_token : false;
      $this->refresh_token = !empty($refresh_token) ? $refresh_token : false;

      add_action('init', array($this, 'fire_actions'));
    }

    public function login($email = "", $pwd = "", $site_type = "", $args = array()){

      if($this->access_token !== false) {
        $this->error_logs["error"] = 1;
        $this->error_logs["message"] = 'User already logged in.';
        return false;
      }

      $body = Helper::get_site_info();
      if(empty($email)) {
        $body['email'] = $_POST['email'];
        $body['password'] = $_POST['password'];
        if(isset($_POST['site_type'])) {
          $body['site_type'] = $_POST['site_type'];
        }
      }else{
        $body['email'] = $email;
        $body['password'] = $pwd;
        $body['site_type'] = $site_type;
      }


      $confirm_token = md5(uniqid(mt_rand(), true));
      set_site_transient(TENWEB_PREFIX . '_confirm_token', $confirm_token, 60*5); // 5 min

      $body['confirm_token'] = $confirm_token;

      $body = $body + $args;

      $url = TENWEB_API_URL . '/login';
      $result = wp_remote_post($url, array(
        'method' => 'POST',
        'body' => $body,
        'timeout' => 15,
        'headers' => array(
          "Accept" => "application/x.10webmanager.v1+json"
        )
      ));
//var_dump($result); die;
      if(is_wp_error($result)) {
        Helper::set_error_log('login_wp_error', $result->get_error_message());
        $this->error_logs["error"] = 1;
        $this->error_logs["message"] = $result->get_error_message();
        return false;
      } else {
        $res_obj = json_decode($result['body']);

        if(isset($res_obj->error)) {
          Helper::set_error_log('login_error_from_api', json_encode($res_obj->error));
          $this->access_token = false;
          if(isset($res_obj->error->message)) {
            $this->error_logs["error"] = 1;
            $this->error_logs["message"] = $res_obj->error->message;
          }
          return false;

        } else if(isset($res_obj->status) && $res_obj->status == 'ok') {

          $this->set_access_token($res_obj->token);
          $this->set_refresh_token($res_obj->refresh_token);

          update_site_option(TENWEB_PREFIX . '_domain_id', $res_obj->domain_id);
          update_site_option(TENWEB_PREFIX . '_is_available', $res_obj->is_available . '');
          update_site_option(TENWEB_PREFIX . '_user_timezone_offset', $res_obj->timezone_offset);


          $this->domain_id = $res_obj->domain_id;

          /* create 10web user */
          $user = User::get_instance($res_obj->password);

          Helper::clear_cache();
          Manager::get_instance()->set_products();
          Helper::check_site_state();

          do_action('tenweb_logged_in');
          return true;
        }
      }
      return false;
    }

    public function get_access_token(){
      return $this->access_token;
    }

    public function set_access_token($token){
      $this->access_token = $token;
      $this->save_access_token($token);
    }
    public function get_refresh_token(){
      return $this->refresh_token;
    }

    public function set_refresh_token($token){
      $this->refresh_token = $token;
      $this->save_refresh_token($token);
    }

    public function get_domain_id(){
      return $this->domain_id;
    }

    private function save_access_token($new_token){
      update_site_option(TENWEB_PREFIX . '_access_token', $new_token);
    }
    private function save_refresh_token($new_token){
      update_site_option(TENWEB_PREFIX . '_refresh_token', $new_token);
    }

    public function logout($redirect = true){

      $domain_id = get_option('tenweb_domain_id');
      $url = TENWEB_API_URL . '/domains/'. $domain_id . '/logout' ;


      $result = wp_remote_request($url, array(
        'timeout' => 15,
        'method' => 'POST',
        'headers' => array(
          "Authorization" => "Bearer " . $this->access_token,
	        "Accept" => "application/x.10webmanager.v1+json"
        ),
      ));

      if(is_wp_error($result)) {
        Helper::set_error_log('logout_wp_error', $result->get_error_message());
      }else {
        $res_arr = json_decode($result['body'], true);
        if(isset($res_arr['error'])) {
          Helper::set_error_log('logout_api_error', json_encode($res_arr['error']));
        }
      }


      $this->force_logout();
      $user = User::get_instance();
      $user->delete_user();

      do_action('tenweb_logged_out');
      
      if($redirect){
        wp_safe_redirect('admin.php?page=tenweb_menu');
        exit();
      }


    }

    public function check_logged_in(){
      if($this->access_token == false || empty($this->access_token)) {
        return false;
      } else {
        return true;
      }

    }


    public function force_logout(){
      delete_site_option(TENWEB_PREFIX . '_access_token');
      delete_site_option(TENWEB_PREFIX . '_refresh_token');
      $this->access_token = false;
      $this->refresh_token = false;
      Helper::clear_cache();
    }

    public function fire_actions(){
      $action = $this->find_request_var('action', '');


      if(!empty($action)) {
        switch($action) {
          case 'logout':
            //delete_site_option(TENWEB_PREFIX . '_access_token');
            if(isset($_POST[TENWEB_PREFIX . '_nonce']) && wp_verify_nonce($_POST[TENWEB_PREFIX . '_nonce'], TENWEB_PREFIX . '_nonce')) {
              $this->logout();
              break;
            }
        }
      }

    }

    private function find_request_var($key, $default_value = null){
      if(isset($_POST[$key])) {
        return $_POST[$key];
      } else if(isset($_GET[$key])) {
        return $_GET[$key];
      } else if(isset($default_value)) {
        return $default_value;
      }

      return false;
    }

    public static function get_instance(){
      if(null == self::$instance) {
        self::$instance = new self;
      }
      return self::$instance;
    }

    public function get_errors(){
      return $this->error_logs;
    }

  }
}