<?php

namespace app\common\service;

use app\common\model\PostMedia;
use app\common\model\User;
use app\common\validate\PostValidate;
use app\common\traits\crud\CrudServiceTrait;
use app\common\model\Post;
use support\exception\BusinessException;
use support\Redis;
use support\Request;

class PostService
{

    use CrudServiceTrait;

    /**
     * 指定当前要操作的模型
     */
    protected string $modelClass = Post::class;

    /**
     * 验证器
     */
    protected $validator = PostValidate::class;

    /**
     * 获取验证器
     */
    public function getValidator()
    {
        return  new $this->validator;
    }

    /**
     * 构造 CrudUtil 查询配置
     */
    protected function buildQueryConfig(Request $request, string $scene = 'default'): array
    {
        $p = $request->all();

        $config = [];
        $config['model'] = $this->modelClass;
        switch ($scene) {
            case 'default':
                $config['where']['status'] = 1;
                $config['order']['sort'] = 'desc';
                $config['order']['id'] = 'desc';
                break;
            case 'index':
                if (isset($p['category_id']) && $p['category_id']) {
                    $config['where']['category_id'] = $p['category_id'];
                }
                if (isset($p['scene']) && $p['scene']=='self') {
                    if(!empty($request->user) && !empty($request->user->uid)){
                        $config['where']['user_id'] = $request->user->uid;
                    }else{
                        $config['where']['user_id'] = -1;
                    }
                }
                if(isset($p['year']) && $p['year']){
                    $from = strtotime($p['year'].'-01-01');
                    $to = strtotime($p['year'].'-12-31 23:59:59');
                    $config['where']['created_at'] = [
                        'between', [$from, $to]
                    ];
                }
                if (isset($p['keyword']) && $p['keyword']) {
                    $config['where']['content'] = ['like', '%'.$p['keyword'].'%'];
                }
                $config['where']['status'] = 1;
                $config['order']['sort'] = 'desc';

                if (isset($p['favorite']) && $p['favorite']) {
                    $config['order']['favorite'] = 'desc';
                } elseif (isset($p['browse']) && $p['browse']) {
                    $config['order']['browse'] = 'desc';
                } else {
                    $config['order']['id'] = 'desc';
                }
                break;
            case 'show':
                $config['where']['id'] = $p['id'];
                $config['where']['status'] = 1;
                break;
            case 'store':
                break;
            case 'update':
                $config['where']['id'] = $p['id'];
                break;
            case 'destroy':
                $config['where']['id'] = $p['id'];
                break;
        }

        return $config;
    }

    /**
     * 添加前置处理
     */
    public function beforeServiceStore($data, Request $request)
    {
        $data['user_id'] = $request->user->uid;;
//        $user = User::where('id', $data['user_id'])->first();
//        if($user->is_release == 0){
//            throw new BusinessException('无发布权限');
//        }
        $media = serialize($data['media']);
        redis::set('PostMedia_'.$data['user_id'],$media,30);
        unset($data['media']);

        return $data;
    }

    /**
     * 添加后置处理
     */
    public function afterServiceStore($res)
    {
        $media = redis::get('PostMedia_'.$res['user_id']);
        $media = unserialize($media);
        if(!is_array($media)){
            $media = explode(',',$media);
        }
        foreach ($media as $v) {
            PostMedia::create([
                'post_id' => $res->id,
                'media_type' => $this->getMediaTypeByUrl($v),
                'url' => $v,
            ]);
        }
    }

    /**
     * 添加前置处理
     */
    public function beforeServiceUpdate($data, Request $request)
    {
        $data['user_id'] = $request->user->uid;;
        $media = serialize($data['media']);
        redis::set('PostMedia_'.$data['user_id'],$media,30);
        unset($data['media']);

        return $data;
    }

    /**
     * 添加后置处理
     */
    public function afterServiceUpdate($res)
    {
        PostMedia::where('post_id', $res->id)->delete();
        $media = redis::get('PostMedia_'.$res['user_id']);
        $media = unserialize($media);
        foreach ($media as $v) {
            PostMedia::create([
                'post_id' => $res->id,
                'media_type' => $this->getMediaTypeByUrl($v['url']),
                'url' => $v['url'],
            ]);
        }
    }

    /**
     * 添加前置处理
     */
    public function beforeServiceShow($data, Request $request)
    {
        $post = Post::find($data['id']);
        if(!$post){
            $post->browse = $post->browse+1;
            $post->save();
        }

        return $data;
    }

    function getMediaTypeByUrl(string $url): int
    {
        // 提取后缀
        $ext = strtolower(pathinfo(parse_url($url, PHP_URL_PATH), PATHINFO_EXTENSION));

        // 图片类型
        $imageExt = ['jpg', 'jpeg', 'png', 'gif', 'webp', 'bmp'];
        // 视频类型
        $videoExt = ['mp4', 'mov', 'avi', 'wmv', 'flv', 'mkv'];

        if (in_array($ext, $imageExt)) {
            return 1; // 图片
        }
        if (in_array($ext, $videoExt)) {
            return 2; // 视频
        }

        return 0; // 未知类型
    }
}