<?php

declare(strict_types=0);

/**
 * vim:set softtabstop=4 shiftwidth=4 expandtab:
 *
 * LICENSE: GNU Affero General Public License, version 3 (AGPL-3.0-or-later)
 * Copyright Ampache.org, 2001-2024
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 *
 */

namespace Ampache\Module\Api\Method;

use Ampache\Config\ConfigContainerInterface;
use Ampache\Config\ConfigurationKeyEnum;
use Ampache\Module\Api\Authentication\GatekeeperInterface;
use Ampache\Module\Api\Exception\ErrorCodeEnum;
use Ampache\Module\Api\Method\Exception\RequestParamMissingException;
use Ampache\Module\Api\Method\Exception\ResultEmptyException;
use Ampache\Module\Api\Output\ApiOutputInterface;
use Ampache\Repository\Model\ModelFactoryInterface;
use Ampache\Repository\Model\User;
use Ampache\Repository\PodcastRepositoryInterface;
use Psr\Http\Message\ResponseInterface;

final class PodcastEpisodesMethod implements MethodInterface
{
    public const ACTION = 'podcast_episodes';

    private ModelFactoryInterface $modelFactory;

    private PodcastRepositoryInterface $podcastRepository;

    private ConfigContainerInterface $configContainer;

    public function __construct(
        ModelFactoryInterface $modelFactory,
        PodcastRepositoryInterface $podcastRepository,
        ConfigContainerInterface $configContainer
    ) {
        $this->modelFactory      = $modelFactory;
        $this->podcastRepository = $podcastRepository;
        $this->configContainer   = $configContainer;
    }

    /**
     * MINIMUM_API_VERSION=420000
     *
     * This returns the episodes for a podcast
     *
     * filter = (string) ID of the podcast
     * offset = (integer) //optional
     * limit  = (integer) //optional
     * cond    = (string) Apply additional filters to the browse using ';' separated comma string pairs (e.g. 'filter1,value1;filter2,value2') //optional
     * sort    = (string) sort name or comma separated key pair. Order default 'ASC' (e.g. 'name,ASC' and 'name' are the same) //optional
     *
     * @param GatekeeperInterface $gatekeeper
     * @param ResponseInterface $response
     * @param ApiOutputInterface $output
     * @param array{
     *     filter?: string,
     *     offset?: string,
     *     limit?: string,
     *     cond?: string,
     *     sort?: string,
     *     api_format: string,
     *     auth: string,
     * } $input
     * @param User $user
     * @return ResponseInterface
     * @throws RequestParamMissingException|ResultEmptyException
     */
    public function handle(
        GatekeeperInterface $gatekeeper,
        ResponseInterface $response,
        ApiOutputInterface $output,
        array $input,
        User $user
    ): ResponseInterface {
        if (!$this->configContainer->get(ConfigurationKeyEnum::PODCAST)) {
            $response->getBody()->write(
                $output->error(
                    ErrorCodeEnum::ACCESS_DENIED,
                    T_('Enable: podcast'),
                    self::ACTION,
                    'system'
                )
            );

            return $response;
        }

        $podcastId = (int)($input['filter'] ?? 0);
        if ($podcastId === 0) {
            throw new RequestParamMissingException(
                sprintf(T_('Bad Request: %s'), 'filter')
            );
        }

        $podcast = $this->podcastRepository->findById($podcastId);
        if ($podcast === null) {
            throw new ResultEmptyException(
                (string) $podcastId
            );
        }

        $browse = $this->modelFactory->createBrowse(null, false);

        $browse->set_user_id($user);

        $browse->set_type('podcast_episode');

        $browse->set_sort_order(html_entity_decode((string)($input['sort'] ?? '')), ['pubdate','DESC']);

        $browse->set_filter('podcast', $podcastId);

        $browse->set_conditions(html_entity_decode((string)($input['cond'] ?? '')));

        $results = $browse->get_objects();
        if ($results === []) {
            $response->getBody()->write(
                $output->writeEmpty('podcast_episode')
            );

            return $response;
        }

        $output->setOffset((int)($input['offset'] ?? 0));
        $output->setLimit((int)($input['limit'] ?? 0));
        $output->setCount($browse->get_total());

        $response->getBody()->write(
            $output->podcastEpisodes($results, $user, $input['auth'])
        );

        return $response;
    }
}
