<?php

/**
 * The Authentiq options class.
 *
 * This is used to get/set plugin options.
 *
 * @since      1.0.0
 * @package    Authentiq
 * @subpackage Authentiq/includes
 * @author     The Authentiq Team <hello@authentiq.com>
 */
class Authentiq_Options
{
  protected $options_name = AUTHENTIQ_NAME . '_settings';
  private $_opt = null;
  protected static $instance = null;

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

    return self::$instance;
  }

  public function get_options_name() {
    return $this->options_name;
  }

  public function get_options() {
    if (empty($this->_opt)) {
      $options = get_option($this->options_name, array());

      if (!is_array($options)) {
        $options = $this->defaults();
      }

      $options = array_merge($this->defaults(), $options);

      $this->_opt = $options;
    }

    return $this->_opt;
  }

  public function get($key, $default = null) {
    $options = $this->get_options();

    if (!isset($options[$key])) {
      return apply_filters('authentiq_get_option', $default, $key);
    }

    /**
     * Filters Authentiq option value.
     *
     * @since 1.0.0
     *
     * @param string     $value       Option value
     * @param string     $key         Option key
     */
    return apply_filters('authentiq_get_option', $options[$key], $key);
  }

  public function set($key, $value, $should_update = true) {
    $options = $this->get_options();
    $options[$key] = $value;
    $this->_opt = $options;

    if ($should_update) {
      update_option($this->options_name, $options);
    }
  }

  public function save() {
    $options = $this->get_options();
    update_option($this->options_name, $options);
  }

  public function delete($key) {
    $defaults = $this->defaults();
    $this->set($key, $defaults[$key]);
  }

  public function get_default($key) {
    $defaults = $this->defaults();

    return $defaults[$key];
  }

  protected function defaults() {
    return array(
      'version' => AUTHENTIQ_VERSION,

      'client_id' => '',
      'client_secret' => '',
      'client_scopes' => array(),

      'requires_verified_email' => 1,

      // Allows users to use the WP username/password form
      'classic_wp_login' => 1,

      // Accepts certain users authenticating based on this rule
      // 0: all users, 1: users without Authentiq ID, 2: no users
      'classic_wp_login_for' => 1,

      // Automatic redirects to Authentiq ID, without going to WP login page
      'auto_login' => 0,

      // Filter users while authenticating based on the email domain (one domain per line)
      'filter_user_domains' => '',

      // 0: whitelist domains, 1: blacklist domains
      'filter_user_domains_condition' => 1,

      // Default redirect_to after a sign-in for Authentiq plugin
      'default_login_redirection' => '',
      'default_login_redirection_applies_to' => 'all',
      
      // Sign in form UI layout
      // 0: replace WP form, 1: add AQ as button, 2: add AQ as text link, 3: no AQ in UI
      'layout_signin_form' => 2,

      // When `layout_signin_form`=2, this allows admin to override display text
      'layout_signin_form_link_text' => esc_html__('...or use the Authentiq ID app', AUTHENTIQ_LANG),
      
      // Registration form UI layout
      // 0: replace WP form, 1: add AQ as button, 2: add AQ as text link, 3: no AQ in UI
      'layout_registration_form' => 2,

      // When `layout_registration_form`=2, this allows admin to override display text
      'layout_registration_form_link_text' => esc_html__('...or use the Authentiq ID app', AUTHENTIQ_LANG),

      // Authentiq button color scheme
      // 0: default, 1: purple, 2: orange, 3: grey, 4: white
      'button_color_scheme' => 0,

      // Used for showing messages in the admin area
      'deferred_admin_notices' => array(),

      // Asks user to correctly configure the client in our dashboard, if a WSL integration has been performed
      'wsl_migration' => 0,
    );
  }

  protected function _get_boolean($value) {
    return 1 === (int)$value || strtolower($value) === 'true';
  }

  public function is_configured() {
    return trim($this->get('client_id')) !== '' && trim($this->get('client_secret')) !== ''
      && !$this->_get_boolean($this->get('wsl_migration'));
  }

  public function allow_classic_wp_login() {
    return $this->_get_boolean($this->get('classic_wp_login'));
  }

  // WordPress helper options
  public function is_wp_registration_enabled() {
    if (is_multisite()) {
      return users_can_register_signup_filter();
    }

    return get_site_option('users_can_register', 0) == 1;
  }
}