<?php

/**
 * Matomo - free/libre analytics platform
 *
 * @link https://matomo.org
 * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
 */

namespace Piwik\Plugins\UsersManager\UserNotifications;

use Piwik\Plugins\UsersManager\Model as UserModel;

abstract class UserNotificationProvider implements UserNotificationProviderInterface
{
    /** @var UserModel */
    protected $userModel;

    public function __construct()
    {
        $this->userModel = new UserModel();
    }

    abstract protected function createNotification(array $users): UserNotificationInterface;

    abstract protected function getSetsOfUsersToNotify(): array;

    public function getUserNotificationsForDispatch(): array
    {
        $notifications = [];

        foreach (array_filter($this->getSetsOfUsersToNotify()) as $setOfUsers) {
            $notifications[] = $this->createNotification($setOfUsers);
        }

        return $notifications;
    }
}