<?php
declare(strict_types=1);

namespace Civi\Mailinglistsync;

use Civi\Api4\Contact;
use Civi\Mailinglistsync\Exceptions\MailinglistException;
use CRM_Mailinglistsync_ExtensionUtil as E;
use Civi\Api4\Event;

class EventMailingList extends BaseMailingList {

  public const CUSTOM_GROUP_NAME = 'Event_Mailing_List';

  public const LOCATION_TYPE = 'Event_Mailing_List_Address';

  protected const RELATED_CLASS = Event::class;
  protected const RELATED_TYPE = 'event';

  protected array $event;

  /**
   * Returns the related event.
   *
   * @return array
   */
  protected function getEntity(): array {
    return $this->event;
  }

  /**
   * Set the related event.
   *
   * @param array $value
   *
   * @return void
   */
  protected function setEntity(array $value): void {
    $this->event = $value;
  }

  /**
   * Get a list of recipients indexed by email address.
   *
   * @return array List of recipients (MailListRecipient)
   * @throws \Civi\Mailinglistsync\Exceptions\MailinglistException
   */
  public function getRecipients(): array {
    try {
      $recipientData = Contact::get()
        ->addSelect('id', 'first_name', 'last_name', 'email.email', 'Active_Directory.SID')
        ->addJoin('Email AS email', 'LEFT', ['id', '=', 'email.contact_id'])
        ->addJoin('Participant AS participant', 'INNER',
          ['id', '=', 'participant.contact_id'],
          ['participant.event_id', '=', $this->event['id']],
          ['participant.status_id', 'IN', self::getEnabledParticipantStatus()],
        )
        ->addGroupBy('id')
        ->execute()
        ->getArrayCopy();
    }
    catch (\Exception $e) {
      throw new MailinglistException(
        "Could not get recipients for event with id '{$this->event['id']}': {$e->getMessage()}",
        MailinglistException::ERROR_CODE_GET_RECIPIENTS_FAILED
      );
    }

    $recipients = [];
    foreach ($recipientData as $recipient) {
      try {
        $recipients[$recipient['email.email']] = new MailingListRecipient(
          sid: $recipient['Active_Directory.SID'],
          contact_id: $recipient['id'],
          first_name: $recipient['first_name'],
          last_name: $recipient['last_name'],
          email: $recipient['email.email'],
        );
      } catch (\Exception $e) {
        throw new MailinglistException(
          "Could not create recipient object for contact with id '{$recipient['id']}': $e",
          MailinglistException::ERROR_CODE_GET_RECIPIENTS_FAILED
        );
      }
    }

    return $recipients;
  }

  /**
   * Get a list of participants status that are enabled for the mailing list.
   *
   * @return ?array
   */
  public static function getEnabledParticipantStatus(): ?array {
    return MailingListSettings::get('participant_status');
  }
}