<?php
declare(strict_types=1);

namespace Civi\Mailinglistsync;

use Civi\Api4\LocationType;
use Civi\Mailinglistsync\Exceptions\MailinglistException;
use CRM_Mailinglistsync_ExtensionUtil as E;

/**
 * Gets the location type IDs for mailing list email-addresses either from
 * the database or from the cache.
 *
 * @return array
 * @throws \Civi\Mailinglistsync\Exceptions\MailinglistException
 */
function getLocationTypes(): array {
  // Try to get location types from cache
  $locationTypes = \Civi::cache()->get(E::SHORT_NAME . '_location_types');

  // Get location types from database if not in cache
  if ($locationTypes === NULL) {
    $locationTypeNames = [
      GroupMailingList::getLocationTypeName(),
      ADGroupMailingList::getLocationTypeName(),
      EventMailingList::getLocationTypeName(),
    ];
    try {
      $result = LocationType::get()
        ->addSelect('id', 'name')
        ->addWhere('name', 'IN', $locationTypeNames)
        ->execute()
        ->getArrayCopy();
      $locationTypes = [];
      foreach ($result as $locationType) {
        $locationTypes[$locationType['id']] = $locationType['name'];
      }
    }
    catch (\Exception $e) {
      throw new MailinglistException(
        "Could not get location types: {$e->getMessage()}",
        MailinglistException::ERROR_CODE_GET_LOCATION_TYPES_FAILED,
      );
    }
    // Cache location types
    \Civi::cache()->set(E::SHORT_NAME . '_location_types', $locationTypes);
  }

  return $locationTypes;
}

/**
 * Get a user ID of the current session.
 *
 * @return int
 */
function getSessionUser(): int {
  $session = \CRM_Core_Session::singleton();
  return (int) $session->get('userID');
}