<?php

namespace App\Service\business;

use App\BaseApp\BaseService;
use App\Models\business\CarouselModel;
use App\Service\common\MediaUrlService;
use Exception;
use Psr\Container\ContainerExceptionInterface;
use Psr\Container\NotFoundExceptionInterface;

/**
 * 小程序轮播图
 *
 * 老 CarouselService 是从 CategoryService 复制来的，option() 去查 carousel 表上并不存在的
 * name / pid 两列，调用即报错。这里按轮播图自己的字段重写。
 */
class CarouselService extends BaseService
{
    private MediaUrlService $media;

    public function __construct()
    {
        parent::__construct();
        $this->model = CarouselModel::class;
        $this->selectField = ['id', 'url', 'to_path', 'sort', 'status', 'created_at', 'updated_at'];
        $this->queryField = ['to_path' => 'like', 'status' => '='];
        $this->orderBy = ['name' => 'sort', 'sort' => 'asc'];
        $this->media = MediaUrlService::getInstance();
    }

    /**
     * @throws ContainerExceptionInterface
     * @throws NotFoundExceptionInterface
     */
    public function list(): array
    {
        $result = $this->getPageList();
        $this->media->publicEach($result['items'], ['url']);
        return $result;
    }

    public function option(): mixed
    {
        $rows = CarouselModel::where('deleted_at', 0)
            ->orderBy('sort')
            ->get(['id', 'url', 'to_path', 'sort'])
            ->toArray();
        $this->media->publicEach($rows, ['url']);
        return $rows;
    }

    /**
     * @throws Exception
     */
    public function detail($id): mixed
    {
        $info = $this->getDetail($id);
        $info->url = $this->media->toPublic($info->url);
        return $info;
    }

    /**
     * 新增：支持一次选多张图批量建轮播
     * @throws Exception
     */
    public function create($params): mixed
    {
        $urls = $params['url'] ?? '';
        $urls = is_array($urls) ? $urls : [$urls];
        $now = time();
        $sort = (int) ($params['sort'] ?? 0);

        $rows = [];
        foreach ($urls as $index => $url) {
            $url = $this->media->toStorage(is_string($url) ? $url : '');
            if ($url === '') {
                continue;
            }
            $rows[] = [
                'url' => $url,
                'to_path' => (string) ($params['to_path'] ?? ''),
                'sort' => $sort + $index,
                // 缺省显示；前端可传 status，批量建时统一用同一状态
                'status' => (int) ($params['status'] ?? 0),
                'created_at' => $now,
            ];
        }
        if (empty($rows)) {
            $this->utils->errorThrow('请上传轮播图');
        }
        if (count($rows) === 1) {
            return $this->insert($rows[0]);
        }
        return CarouselModel::insert($rows);
    }

    /**
     * @throws Exception
     */
    public function update($id, $params): mixed
    {
        if (array_key_exists('url', $params)) {
            $params['url'] = $this->media->firstOf($params['url']);
        }
        return $this->save($id, $params);
    }

    /**
     * @throws Exception
     */
    public function delete($id): mixed
    {
        return $this->del(is_array($id) ? $id : [$id]);
    }

    /**
     * @throws Exception
     */
    public function status($id, $status): mixed
    {
        return $this->save($id, ['status' => (int) $status]);
    }
}