<?php
// +----------------------------------------------------------------------
// | LARAVEL8.0 框架 [ LARAVEL ][ RXThinkCMF ]
// +----------------------------------------------------------------------
// | 版权所有 2017~2021 LARAVEL研发中心
// +----------------------------------------------------------------------
// | 官方网站: http://www.laravel.cn
// +----------------------------------------------------------------------
// | Author: laravel开发员 <laravel.qq.com>
// +----------------------------------------------------------------------

namespace App\Services\Api;

use App\Models\ArticleCateModel;
use App\Models\ArticleModel;
use App\Models\ExamAccessLogModel;
use App\Services\BaseService;
use App\Services\ConfigService;
use App\Services\RedisService;
use PhpOffice\PhpWord\IOFactory;

/**
 * 文章-服务类
 * @author laravel开发员
 * @since 2020/11/11
 * @package App\Services\Api
 */
class ArticleService extends BaseService
{
    // 静态对象
    protected static $instance = null;

    /**
     * 构造函数
     * @author laravel开发员
     * @since 2020/11/11
     */
    public function __construct()
    {
        $this->model = new ArticleModel();
    }

    /**
     * 静态入口
     */
    public static function make()
    {
        if (!self::$instance) {
            self::$instance = new static();
        }
        return self::$instance;
    }

    /**
     * 信息
     * @param int $num
     * @return array|mixed
     */
    public function getInfoByType($type)
    {
        $cacheKey = "caches:article:info_{$type}";
        $datas = RedisService::get($cacheKey);
        if($datas){
            return $datas;
        }

        $datas =  $this->model->where(['type'=>$type,'status'=>1,'mark'=>1])
            ->select(['id','title','type','content','status'])
            ->orderBy('create_time','desc')
            ->first();
        $datas = $datas? $datas->toArray() : [];
        if($datas){
            $datas['content'] = preg_replace("/\n+/",'<br/>',$datas['content']);
            $datas['content'] = get_format_content($datas['content']);
            RedisService::set($cacheKey, $datas,   86400);
        }

        return $datas;
    }

    /**
     * @param $params
     * @param int $pageSize
     * @return array
     */
    public function getDataList($params, $pageSize = 15)
    {
        $page = isset($params['page'])? $params['page'] : 1;
        $cacheKey = "caches:articles:list_{$page}_{$pageSize}:".md5(json_encode($params));
        $datas = RedisService::get($cacheKey);
        if($datas){
            return $datas;
        }

        $query = $this->getQuery($params);
        $list = $query->select(['a.id','a.type','a.title','a.cover','a.view_num','a.show_type','a.create_time','a.description','a.status'])
            ->orderBy('a.create_time','desc')
            ->paginate($pageSize > 0 ? $pageSize : 9999999);
        $list = $list? $list->toArray() :[];
        if($list){
            foreach($list['data'] as &$item){
                $item['create_time'] = $item['create_time']? datetime($item['create_time'],'Y-m-d') : '';
                $item['cover'] = $item['cover']? get_image_url($item['cover']) : '';

            }
        }

        $rows = isset($list['data'])? $list['data'] : [];
        $datas = [
            'pageSize'=> $pageSize,
            'total'=> isset($list['total'])? $list['total'] : 0,
            'list'=> $rows
        ];
        if($rows){
            RedisService::set($cacheKey, $datas, rand(3600, 7200));
        }

        return $datas;
    }

    /**
     * 查询
     * @param $params
     * @return mixed
     */
    public function getQuery($params)
    {
        $where = ['a.mark' => 1];
        $status = isset($params['status'])? $params['status'] : 0;
        $type = isset($params['type'])? $params['type'] : 0;
        $answerType = isset($params['answer_type'])? $params['answer_type'] : 0;
        $cateId = isset($params['cate_id'])? $params['cate_id'] : 0;
        if($status>0){
            $where['a.status'] = $status;
        }
        if($type>0){
            $where['a.type'] = $type;
        }

        if($answerType>0){
            $where['a.answer_type'] = $answerType;
        }

        if($cateId>=0){
            $where['a.cate_id'] = $cateId;
        }


        return $this->model->from('article as a')
            ->where($where)
            ->where(function ($query) use($params){
                $keyword = isset($params['keyword'])? $params['keyword'] : '';
                if($keyword){
                    $query->where('a.title','like',"%{$keyword}%");
                }
            });
    }

    /**
     * 热门问答（都在问列表）
     * @param $userId
     * @param $answerType 问答类型：1-职高，3-专升本
     * @param false $refresh
     * @return array|mixed
     */
    public function getHotList($userId,$answerType=1,$refresh=false)
    {
        $cacheKey = "caches:articles:hotList_{$userId}_{$answerType}";
        $datas = RedisService::get($cacheKey);
        if($datas && !$refresh){
            return $datas;
        }

        $model = $this->model->where(['type'=>9,'answer_type'=>$answerType,'status'=>1,'mark'=>1]);
        $model1 = clone $model;
        if($model1->where('view_num','>', 0)->count('id')>5){
            $model = $model1;
        }

        $num = ConfigService::make()->getConfigByCode('custom_hot_num', 3);
        $num = $num>=2 && $num<= 20? $num : 3;
        $datas = $model->select(['id','cover','type','answer_type','title','description','status'])
            ->orderByRaw('RAND()')
            ->take($num)
            ->get();
        $datas = $datas? $datas->toArray() : [];
        if($datas){
            RedisService::set($cacheKey, $datas, rand(300, 600));
        }

        return $datas;
    }

    /**
     * 推荐问答
     * @param $answerType
     * @param false $refresh
     * @return array|mixed
     */
    public function getRecommendList($answerType=1,$refresh=false)
    {
        $cacheKey = "caches:articles:recList_{$answerType}";
        $datas = RedisService::get($cacheKey);
        if($datas && !$refresh){
            return $datas;
        }

        $num = ConfigService::make()->getConfigByCode('custom_rec_num', 3);
        $num = $num>=2 && $num<= 20? $num : 3;
        $datas = $this->model->where(['type'=>9,'answer_type'=>$answerType,'status'=>1,'mark'=>1])
            ->select(['id','cover','title','answer_type','type','description','status'])
            ->orderBy('view_num','desc')
            ->take($num)
            ->get();
        $datas = $datas? $datas->toArray() : [];
        if($datas){
            RedisService::set($cacheKey, $datas, rand(300, 600));
        }

        return $datas;
    }

    /**
     * 获取文章详情
     * @param $id
     * @return array|mixed
     */
    public function getInfo($id)
    {
        $cacheKey = "caches:articles:info_{$id}";
        $info = RedisService::get($cacheKey);
        if($info){
            return $info;
        }

        $info = $this->model->where(['id'=> $id,'status'=>1,'mark'=>1])
            ->select(['id','title','type','answer_type','cover','show_type','file_url','view_num','author','description','create_time','type','content'])
            ->first();
        $info = $info? $info->toArray() : [];
        if($info){
            $info['create_time'] = $info['create_time']? datetime($info['create_time'],'Y-m-d') : '';
            $info['cover'] = get_image_url($info['cover']);
            $info['file_url'] = get_image_url($info['file_url']);
            if($info['show_type']==2){
                if($content = $this->convertDocxToHtml($info['file_url'])){
                    $info['file_content'] = $content;
                }else{
                    $info['file_content'] = $this->error;
                }

            }
            $info['content'] = get_format_content($info['content']);
            $this->model->where(['id'=> $id])->increment('view_num',1);
            $info['view_num'] += intval($info['view_num']);
            RedisService::set($cacheKey, $info, rand(5,10));
        }

        return $info;
    }

    /**
     * @param $inputFile
     * @return false|string
     * @throws \PhpOffice\PhpSpreadsheet\Writer\Exception
     */
    public function convertDocxToHtml($inputFile)
    {
        $filePath = get_image_path($inputFile);
        $outputFile = str_replace('.docx', '.html', $filePath);
        $outputFile = str_replace('.doc', '.html', $outputFile);
        $filePath = ATTACHMENT_PATH.get_image_path($filePath);
        // 检查文件是否存在
        if (!file_exists($filePath)) {
            $this->error = '解析文档不存在，请确认已成功上传';
            return false;
        }

        if (file_exists(ATTACHMENT_PATH.$outputFile)) {
            return file_get_contents(ATTACHMENT_PATH.$outputFile);
        }

        try {
            // 加载文档
            $phpWord = IOFactory::load($filePath);


            //保存为HTML
            $htmlWriter = IOFactory::createWriter($phpWord, 'HTML');
            $htmlWriter->save(ATTACHMENT_PATH.$outputFile);

            if (file_exists(ATTACHMENT_PATH.$outputFile)) {
                return file_get_contents(ATTACHMENT_PATH.$outputFile);
            } else {
                $this->error = '解析文档失败';
                return false;
            }
        }catch (\Exception $exception){
            $this->error = '解析文档失败：'.$exception->getMessage();
            return false;
        }
    }

    /**
     * 查找或查看
     * @param $params
     * @return array|false|mixed
     */
    public function search($params)
    {
        $cacheKey = "caches:articles:search_".md5(json_encode($params));
        $data = RedisService::get($cacheKey);
        if($data){
            return $data;
        }
        $id = isset($params['id'])? $params['id'] : 0;
        $answerType = isset($params['answer_type']) && $params['answer_type']? $params['answer_type'] : 1;
        $keyword = isset($params['keyword'])? $params['keyword'] : '';
        if(empty($keyword) && $id<=0){
            $this->error = '请选择或输入问题';
            return false;
        }

        $where = ['id'=>0,'type'=>9,'answer_type'=>$answerType,'status'=>1,'mark'=>1];
        if($id){
            $where['id'] = $id;
        }else{
            unset($where['id']);
        }
        $data = $this->model->where($where)
            ->where(function($query) use($keyword){
                if($keyword){
                    $query->where('title', 'like',"%{$keyword}%")->orWhere('content', 'like',"%{$keyword}%");
                }
            })
            ->select(['id','title','type','answer_type','description','content','status'])
            ->orderByRaw('RAND()')
            ->orderBy('sort','desc')
            ->first();
        $data = $data? $data->toArray() :[];
        if($data){
            RedisService::set($cacheKey, $data, rand(3,5));
        }

        return $data;
    }

    /**
     * 获取分类文章推荐
     * @param int $cateId 推荐分类ID
     * @param int $type 类别：3-普通文章，4-客服回复
     * @return array|mixed
     */
    public function getCustomRecommend($cateId=0, $type=4)
    {
        $cacheKey = "caches:articles:list_{$cateId}";
        $datas = RedisService::get($cacheKey);
        if($datas){
            return $datas;
        }

        $limitNum = ConfigService::make()->getConfigByCode('custom_recommend_num', 6);
        $limitNum = $limitNum? $limitNum : 6;
        $datas = ArticleCateModel::where(function($query) use($cateId){
                if($cateId){
                    $query->where('cate_id', $cateId);
                }
            })->where(['type'=>$type,'status'=>1,'mark'=>1])
            ->select(['id','cate_id','title','description','sort','type','status'])
            ->limit($limitNum)
            ->orderBy('sort','desc')
            ->orderBy('create_time','desc')
            ->get();
        $datas = $datas? $datas->toArray() : [];
        if($datas){
            RedisService::set($cacheKey, $datas, rand(300,600));
        }

        return $datas;
    }

    /**
     * 获取文章推荐分类
     * @param int $type 1-普通文章分类
     * @return array|mixed
     */
    public function getIndexList($type=1)
    {
        $cacheKey = "caches:articles:list_{$type}";
        $datas = RedisService::get($cacheKey);
        if($datas){
            return $datas;
        }

        $limitNum = ConfigService::make()->getConfigByCode('index_article_num', 6);
        $limitNum = $limitNum? $limitNum : 6;
        $datas = $this->model::where(['type'=> $type,'status'=>1,'mark'=>1])
            ->orderBy('sort','desc')
            ->orderBy('id','desc')
            ->limit($limitNum)
            ->get();
        $datas = $datas? $datas->toArray() : [];
        if($datas){
            RedisService::set($cacheKey, $datas, rand(300,600));
        }

        return $datas;
    }

    /**
     * 获取文章推荐分类
     * @param int $type 2-对口资料分类，3-专升本资料分类
     * @return array|mixed
     */
    public function getCateList($type=2, $sc=0)
    {
        $cacheKey = "caches:articles:cateList_{$type}";
        $datas = RedisService::get($cacheKey);
        // 复习资料访问统计
        if (empty($sc)) {
            ExamAccessLogModel::saveLog(date('Y-m-d'), $type, 5);
        }
        if($datas){
            return $datas;
        }


        $datas = ArticleCateModel::where(['type'=> $type,'status'=>1,'mark'=>1])
            ->select(['id','icon','name','pid','description','type','sort','status'])
            ->orderBy('sort','desc')
            ->orderBy('id','asc')
            ->get();
        $datas = $datas? $datas->toArray() : [];
        //var_dump($datas);
        $list = [];
        if($datas){
            foreach ($datas as $item){
                $pid = isset($item['pid'])? $item['pid'] : 0;
                $id = isset($item['id'])? $item['id'] : 0;
                if($pid>0){
                    $list[$pid] = isset($list[$pid])? $list[$pid] : [];
                    $list[$pid]['children'][] = $item;
                }else {
                    $item['children'] = isset($list[$id]['children'])? $list[$id]['children'] : [];
                    $list[$id] = $item;
                }
            }
            RedisService::set($cacheKey, $list, rand(300,600));
        }

        return $list;
    }
}