<?php
namespace App\Services\Common;

use App\Models\VideoModel;
use App\Services\BaseService;
use Illuminate\Support\Facades\DB;

class VideoService extends BaseService
{
    public static $instance = null;

    public function __construct()
    {
        $this->model = new VideoModel();
    }

    public static function make()
    {
        if (!self::$instance) {
            self::$instance = new static();
        }
        return self::$instance;
    }

    /**
     * 获取视频集列表
     */
    public function getDataList($params, $pageSize = 15)
    {
        $where = ['a.mark' => 1];

        // 状态过滤
        $status = isset($params['status']) ? (int) $params['status'] : 0;
        if ($status > 0) {
            $where['a.status'] = $status;
        }

        // 查询
        $query = $this->model->from('videos as a')
            ->where($where)
            ->where(function ($query) use ($params) {
                $keyword = isset($params['keyword']) ? trim($params['keyword']) : '';
                if ($keyword) {
                    $query->where('a.video_name', 'like', "%{$keyword}%");
                }
            })
            ->where(function ($query) use ($params) {
                $categoryId = isset($params['category_id']) ? (int) $params['category_id'] : 0;
                if ($categoryId) {
                    $query->where('a.category_id', $categoryId);
                }
            })
            ->select([
                'a.id',
                'a.video_name',
                'a.category_id',
                'a.poster',
                'a.description',
                'a.sort',
                'a.create_time',
                'a.update_time',
                'a.status'
            ])
            ->orderBy('a.sort', 'desc')
            ->orderBy('a.create_time', 'desc');

        $list = $query->paginate($pageSize > 0 ? $pageSize : 9999999)->toArray();

        // 格式化数据
        if (!empty($list['data'])) {
            foreach ($list['data'] as &$item) {
                $item['create_time'] = $item['create_time'] ? datetime($item['create_time'], 'Y-m-d H:i:s') : '';
                $item['update_time'] = $item['update_time'] ? datetime($item['update_time'], 'Y-m-d H:i:s') : '';
                $item['poster'] = $item['poster'] ? get_image_url($item['poster']) : '';
            }
        }

        return [
            'pageSize' => $pageSize,
            'total' => $list['total'] ?? 0,
            'list' => $list['data'] ?? []
        ];
    }

    /**
     * 编辑或新增视频集
     */
    public function edit()
    {
        $data = request()->all();

        // 视频封面处理
        if (!empty($data['poster'])) {
            $data['poster'] = get_image_path(trim($data['poster']));
        }

        $id = $data['id'] ?? 0;

        // 校验视频集名称是否唯一
        $videoName = trim($data['video_name'] ?? '');
        $checkId = $this->model->where(['video_name' => $videoName, 'mark' => 1])->value('id');
        if ($checkId && $id != $checkId) {
            return message('视频集名称已存在', false);
        }

        // 默认字段处理
        $data['update_time'] = time();
        if (!$id) {
            $data['create_time'] = time();
        }

        return parent::edit($data); // 调用父类的 edit 方法
    }

    /**
     * 获取视频集详情
     */
    public function info()
    {
        $id = request()->input("id", 0);
        $info = [];
        if ($id) {
            $info = $this->model->getInfo($id);
        }
        $info['poster'] = $info['poster'] ? get_image_url($info['poster']) : '';
        return message(MESSAGE_OK, true, $info);
    }

    /**
     * 获取视频集选项
     */
    public function options()
    {
        // 获取查询参数
        $param = request()->all();
        $keyword = getter($param, "keyword");

        // 查询视频集名称或描述
        $datas = $this->model
            ->where(function ($query) use ($keyword) {
                if ($keyword) {
                    $query->where('video_name', 'like', "%{$keyword}%")
                        ->orWhere('description', 'like', "%{$keyword}%");
                }
            })
            ->where(['mark' => 1])
            ->select(['id', 'video_name'])
            ->get();

        return $datas ? $datas->toArray() : [];
    }
}