<?php

namespace app\api\controller;

use app\api\controller\Base;
use think\Db;

/**
 * @title AI审核文章
 * @description 对接OPENAI接口
 */
class Aireview extends Base
{

    protected $sApiKey;
    protected $proxy;
    protected $sUrl;
    protected $curl;
    protected $sResponesData;
    protected $sError;
    protected $timeout = 60;

    public function __construct(\think\Request $request = null) {
        // 从配置读取敏感信息（非硬编码）
        $this->sApiKey = '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';
        $this->proxy = '';
        $this->sUrl = 'https://api.openai.com/v1/chat/completions';

        parent::__construct($request);
    }

    /**
     * CURL 发送请求到 OpenAI
     * @param $messages 内容
     * @param $model 模型类型
     */
    protected function curlOpenAI($messages, $model = 'gpt-4o'){

        $sUrl = $this->sUrl;

        $data = [
            'model' => $model,
            'messages' => $messages,
            'temperature' => 0.7
        ];

        $this->curl = curl_init();
       

        // 通用配置
        curl_setopt($this->curl, CURLOPT_URL, $sUrl);
         // 设置头信息
        curl_setopt($this->curl, CURLOPT_HTTPHEADER,  [
                'Content-Type: application/json',
                'Authorization: Bearer ' . $this->sApiKey
        ]);
        curl_setopt($this->curl, CURLOPT_PROXY,$this->proxy);
        curl_setopt($this->curl, CURLOPT_SSL_VERIFYPEER,true);
        curl_setopt($this->curl, CURLOPT_SSL_VERIFYHOST,2);
        curl_setopt($this->curl, CURLOPT_POST, true); //设置为POST方式
        curl_setopt($this->curl, CURLOPT_POSTFIELDS,json_encode($data));
        curl_setopt($this->curl, CURLOPT_RETURNTRANSFER, TRUE) ; // 获取数据返回
        // curl_setopt($this->curl, CURLOPT_TIMEOUT, $this->timeout);

        $result = curl_exec($this->curl);

        //请求失败
        if (curl_errno($this->curl)){
            $this->sError = curl_errno($this->curl);
            curl_close($this->curl);
            return FALSE;
        }
        $this->sResponesData = json_decode($result);
        curl_close($this->curl);
        return TRUE;
    }
   
    /**
     * @title AI审核文章
     * @param article_id 文章ID
     * @param abstrart 摘要
     * @param keywords 关键词
     * @param model 接口模型
     * @param stream  是否流式输出 true是false否
     */
    public function review(){


        //获取参数
        $aParam = $this->request->post();
        if(empty($aParam['article_id'])){
            exit(json_encode(array('status' => 2,'msg' => 'Please select an article' )));
        }
        // if(empty($aParam['abstrart'])){
        //     exit(json_encode(array('status' => 2,'msg' => 'abstrart cannot be empty' )));
        // }
        // if(empty($aParam['keywords'])){
        //     exit(json_encode(array('status' => 2,'msg' => 'keywords cannot be empty' )));
        // }

        //查询文章
        $aArticle = Db::table('t_article')->field('article_id,abstrart,keywords,journal_id')->where('article_id',$aParam['article_id'])->find();
        if(empty($aArticle)){
            exit(json_encode(array('status' => 3,'msg' => 'No articles requiring review were found' )));
        }

        //获取文章评测内容
        $aAiReview = Db::table('t_article_ai_review')->field('article_id,content')->where('article_id',$aParam['article_id'])->find();
        if(!empty($aAiReview)){
            exit(json_encode(array('status' => 1,'msg' => 'AI has been reviewed','data' => $aAiReview)));
        }

        $aParam['abstrart'] = empty($aParam['abstrart']) ? $aArticle['abstrart'] : $aParam['abstrart'];//简介
        $aParam['keywords'] = empty($aParam['keywords']) ? $aArticle['keywords'] : $aParam['keywords'];//关键词


        //根据期刊ID查询期刊信息
        $aJournal = Db::table('t_journal')->field('zname')->where('journal_id',$aArticle['journal_id'])->find();
        if(empty($aJournal)){
            exit(json_encode(array('status' => 4,'msg' => 'This article is not associated with a journal' )));
        }
        //组织参数
        $sContent = '';
        $sContent .= '摘要：'.$aParam['abstrart'];
        $sContent .= '关键词：'.$aParam['keywords'];
        $sContent .= '以上这篇文章是否符合'.$aJournal['zname'].'？是否具有科学前沿性和创新性？请返回中文解释';
        $messages = [
            [
                'role' => 'user', //角色：platform：平台;developer:开发者；user:用户;guideline:模型规范“指南”部分:连接：https://model-spec.openai.com/2025-02-12.html#chain_of_command
                'content' => $sContent
            ]
        ];
        //请求接口
        $sModel = $aParam['api_model'] ?? 'gpt-4o';
        $result = $this->curlOpenAI($messages,$sModel);
        if($result ==  FALSE){
            exit(json_encode(array('status' => 4,'msg' => 'Interface request failed'.$this->sError)));
        }

        //处理返回信息
        $data = $this->sResponesData;
        if(!is_object($data)){
            exit(json_encode(array('status' => 5,'msg' => 'There is a misunderstanding in the data returned by the interface')));
        }
        $data = object_to_array($data);
        $aChoices = $data['choices'] ?? [];
        if(empty($aChoices)){
            exit(json_encode(array('status' => 6,'msg' => 'OPENAI did not return data')));
        }
        $aChoicesInfo = $aChoices[0] ?? [];
        $aMessage = $aChoicesInfo['message'] ?? [];
        if(empty($aMessage['content'])){
            exit(json_encode(array('status' => 7,'msg' => 'OPENAI returns empty data')));
        }

        //执行数据入库
        $param = [];
        $param['content'] = addslashes($aMessage['content']);
        $param['article_id'] = $aParam['article_id'];
        $aResult = $this->addAiReview($param);
        exit(json_encode($aResult));
       

    }

    /**
     * @title AI审核内容入库
     * @param article_id 文章ID
     * @param content 内容
     */
    protected function addAiReview($aParam = array()){

        //返回数组
        $aResult = ['status' => 1,'msg' => 'AI review successful','data' => $aParam];
        //必填参数验证
        $aFields = ['article_id','content'];
        $bStatus = true;
        foreach($aFields as $val){
            if(empty($aParam[$val])){
                $aResult = ['status' => 2,'msg' => $val.'cannot be empty'];
                $bStatus = false;
                break;
            }
        }
        if($bStatus == false){
            return $aResult;
        }
        //执行入库
        $aParam['create_time'] = date('Y-m-d H:i:s');
        if(!Db::name('article_ai_review')->insert($aParam)){
           $aResult =  ['status' => 2,'msg' => 'Failed to add AI audit content'];
        }
        return $aResult;
    }

    /**
     * @title 文章AI审核内容查询
     * @param article_id 文章ID
     */
    public function get(){

        //获取参数
        $aParam = $this->request->post();
        if(empty($aParam['article_id'])){
            exit(json_encode(array('status' => 2,'msg' => 'Please select an article' )));
        }

        //查询文章
        $aArticle = Db::table('t_article')->field('article_id')->where('article_id',$aParam['article_id'])->find();
        if(empty($aArticle)){
            exit(json_encode(array('status' => 3,'msg' => 'No articles requiring review were found' )));
        }
        //查询文章审核内容
        $aAiReview = Db::table('t_article_ai_review')->field('content')->where('article_id',$aParam['article_id'])->find();
        exit(json_encode(array('status' => 1,'msg' => 'Successfully obtained article review content','data' => $aAiReview)));
    }

    public function test(){
        //获取参数
        $aParam = $this->request->post();
        if(empty($aParam['content'])){
            exit(json_encode(array('status' => 2,'msg' => '请输入需要验证的字符串' )));
        }
        if(!$this->checkMinChars($aParam['content'],200)){
            exit(json_encode(array('status' => 3,'msg' => '字符串长度未满足配置' )));
        }
        exit(json_encode(array('status' => 1,'msg' => '验证成功' )));
    }
    /**
     * 验证字符长度
     * @param $str 字符串
     * @param $num 字符长度
     * @return void
     */
    private function checkMinChars($str = '',$num = 200) {
        // 过滤非汉字和英文的字符（保留汉字、大小写字母）
        $filteredStr = preg_replace('/[^\x{4e00}-\x{9fa5}a-zA-Z0-9]/u', '', $str);
        
        // 计算有效字符总数（汉字按1个字符计，英文和数字同理）
        $total = mb_strlen($filteredStr, 'UTF-8');
        return $total >= $num;
    }
}