<?php

namespace Civi\Mailinglistsync;

use Civi\Authx\None;
use CRM_Mailinglistsync_ExtensionUtil as E;

class MailingListSettings {

  public const SETTINGS = [
    E::SHORT_NAME . '_enable' => [
      'data_type' => 'boolean',
    ],
    E::SHORT_NAME . '_logging' => [
      'data_type' => 'boolean',
    ],
    E::SHORT_NAME . '_mlmmj_host' => [
      'data_type' => 'string',
    ],
    E::SHORT_NAME . '_mlmmj_token' => [
      'data_type' => 'string',
    ],
    E::SHORT_NAME . '_mlmmj_port' => [
      'data_type' => 'integer',
      'default_value' => 443,
    ],
    E::SHORT_NAME . '_dovecot_host' => [
      'data_type' => 'string',
    ],
    E::SHORT_NAME . '_dovecot_token' => [
      'data_type' => 'string',
    ],
    E::SHORT_NAME . '_dovecot_port' => [
      'data_type' => 'integer',
      'default_value' => 443,
    ],
    E::SHORT_NAME . '_participant_status' => [
      'data_type' => 'array',
    ],
    E::SHORT_NAME . '_ad_contact_tags' => [
      'data_type' => 'array',
    ],
  ];

  /**
   * Stores a setting in Civi::settings
   *
   * @param array $settings
   * Expects an array with key => value for the setting
   */
  public static function set(array $settings): void {
    // Remove possibly illegal data from settings
    $settings = array_intersect_key($settings, self::SETTINGS);

    // Cast settings to the correct datatype
    foreach ($settings as $key => $value) {
      if ($value !== '') {
        settype($settings[$key], self::SETTINGS[$key]['data_type']);
      } else {
        $settings[$key] = NULL;
      }
    }

    \Civi::settings()->add($settings);
  }

  /**
   * Returns a specific value of a setting if the key is passed as parameter.
   * Else all settings will be returned as associative array.
   *
   * @param null $key
   * The name of the setting or NULL
   *
   * @return array|mixed|null
   */
  public static function get($key = NULL): mixed {
    if (!is_null($key)) {
      return \Civi::settings()->get($key);
    }
    else {
      $settings = [];
      foreach (array_keys(self::SETTINGS) as $key) {
        $settings[$key] = \Civi::settings()->get($key) ?? self::SETTINGS[$key]['default_value'] ?? NULL;
      }
      return $settings;
    }
  }

  /**
   * Validates the settings.
   *
   * @param array $values
   * @param array $errors
   *
   * @return void
   */
  public static function validate(array $values, array &$errors): void {
    // Validate url if synchronization is enabled
    $url = $values[E::SHORT_NAME . '_mailinglist_mlmmj_host'];
    if (!empty($values[E::SHORT_NAME . '_mailinglist_mlmmj_enable']) && !filter_var($url, FILTER_VALIDATE_URL)) {
      $errors[E::SHORT_NAME . '_mailinglist_mlmmj_host'] = E::ts('Invalid URL');
    }

    // Validate port if synchronization is enabled and port is set
    $port = $values[E::SHORT_NAME . '_mailinglist_mlmmj_port'] ?? NULL;
    if (!empty($values[E::SHORT_NAME . '_mailinglist_mlmmj_enable']) && !empty($port)) {
      if (is_numeric($port)) {
        $errors[E::SHORT_NAME . '_mailinglist_mlmmj_port'] = E::ts('Port must be a number');
      }
      if ($port < 1 || $port > 65535) {
        $errors[E::SHORT_NAME . '_mailinglist_mlmmj_port'] = E::ts('Port must be between 1 and 65535');
      }
    }

    // Require host and token if mlmmj is enabled
    if (!empty($values[E::SHORT_NAME . '_mailinglist_mlmmj_enable'])) {
      if (empty($values[E::SHORT_NAME . '_mailinglist_mlmmj_host'])) {
        $errors[E::SHORT_NAME . '_mailinglist_mlmmj_host'] = E::ts('Host is required');
      }
      if (empty($values[E::SHORT_NAME . '_mailinglist_mlmmj_token'])) {
        $errors[E::SHORT_NAME . '_mailinglist_mlmmj_token'] = E::ts('Token is required');
      }
    }
  }

}