<?php

namespace app\api\controller;

use app\api\controller\Base;
use think\Db;
use app\common\OpenAi;
use app\common\Article;
/**
 * @title AI审核文章
 * @description 对接OPENAI接口
 */
class Aireview extends Base
{

    /**
     * @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($aParam = []){


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


        //问题等级
        $sQuestionLevel = empty($aParam['question_level']) ? 'A' : $aParam['question_level'];
        //需要处理的AI问题字段
        $sQuestionFields = empty($aParam['queue_fields']) ? 'journal_scope' : $aParam['queue_fields'];
        $aQuestionFields = explode(',', $sQuestionFields);
        //查询文章及AI审稿
        $aWhere = ['article_id' => $aParam['article_id']];
        $aResult = json_decode($this->get($aWhere),true);
        //文章信息
        $aArticle = empty($aResult['article_data']) ? [] : $aResult['article_data'];
        if(empty($aArticle)){
            return json_encode(array('status' => 3,'msg' => 'No articles requiring review were found' ));
        }
        //AI审稿信息
        $aAiReview = empty($aResult['data']) ? [] : $aResult['data'];
        if(!empty($aAiReview['is_finish']) && $aAiReview['is_finish'] == 1){
            return json_encode(array('status' => 1,'msg' => 'AI has been reviewed','data' => $aAiReview));
        }

        //实例化公共方法
        $oHelperFunction = new \app\common\HelperFunction;
        //根据期刊ID查询期刊信息
        $aJournalIssn = [];
        $sIssn = $sScope = '';
        if(in_array('journal_scope', $aQuestionFields)){
            $aWhere = ['journal_id' => $aArticle['journal_id'],'state' => 0];
            $aJournal = Db::table('t_journal')->field('title as targeted_journals,scope as journal_scope,issn')->where($aWhere)->find();
            if(empty($aJournal)){
                return json_encode(array('status' => 4,'msg' => 'This article is not associated with a journal' ));
            }
            $aArticle += $aJournal;
            $sIssn = empty($aJournal['issn']) ? '' : $aJournal['issn'];
            $sScope = empty($aJournal['journal_scope']) ? '' : $aJournal['journal_scope'];
            $aJournalIssn = array_merge($aJournalIssn,[$sIssn]);
        }
        if(in_array('other_journal', $aQuestionFields)){
            $aWhere = ['journal_id' => ['<>',$aArticle['journal_id']],'state' => 0];
            $aJournalOther = Db::table('t_journal')->field('title as targeted_journals,scope as journal_scope,issn')->where($aWhere)->select();
            if(!empty($aJournalOther)){
                $aJournalIssn = array_merge($aJournalIssn,array_column($aJournalOther, 'issn')); 
            }
        }
        //查询期刊范围
        if(!empty($aJournalIssn)){
            //查询期刊内容
            $oArticle = new Article;
            $aJournalPaperArt = json_decode($oArticle->getJournalPaperArt(['issn' => $aJournalIssn]),true);
            $aJournalPaperArt = empty($aJournalPaperArt['data']) ? [] : $aJournalPaperArt['data'];
            $aArticle['journal_scope'] = empty($aJournalPaperArt[$sIssn]) ? $sScope : $oHelperFunction->filterAllTags($aJournalPaperArt[$sIssn]);
            if(!empty($aJournalPaperArt[$sIssn])){
                unset($aJournalPaperArt[$sIssn]);
            }
            $aArticle['other_journal'] = empty($aJournalPaperArt) ? '' : json_encode($aJournalPaperArt,JSON_UNESCAPED_UNICODE);
        }

        //获取文章的领域
        if($sQuestionFields == 'hotspot'){
            $oArticle = new Article;
            $aArticleField = $oArticle->getArticleField(['article_id' => $iArticleId]);
            $aArticleField = empty($aArticleField['data']) ? [] : $aArticleField['data'];
            if(empty($aArticleField)){
                return json_encode(array('status' => 4,'msg' => 'Domain where article not found:'.$sQuestionFields));
            }
            //数据处理
            $aArticleFieldData = [];
            foreach ($aArticleField as $key => $value) {
                $aArticleFieldData[] = getMajorStr($value['major_id']);
            }
            $aArticle['hotspot'] = json_encode($aArticleFieldData,JSON_UNESCAPED_UNICODE);
        }
        //获取提问AI话术
        $oOpenAi = new OpenAi;
        //获取文章内容
        $aChunkContent = [];
        if(!in_array($sQuestionFields, ['journal_scope','other_journal','hotspot','ai_ethics','ai_registration'])){
            //实例化公共方法
            $oArticle = new Article;
            if($aArticle['state'] > 4 ){
                //查询文章内容
                $aWhere['type'] = 0;
                $aWhere['content'] = ['<>',''];
                $aWhere['state'] = 0;
                $aArticleMain = Db::table('t_article_main')->where($aWhere)->column('content'); 
                //查询参考文献
                $aWhere = ['state' => ['in',[0,2]],'article_id' => $iArticleId];
                $aProductionArticle = Db::name('production_article')->field('p_article_id')->where($aWhere)->find();
                if(!empty($aProductionArticle)){
                    $aWhere = ['state' => 0,'p_article_id' => $aProductionArticle['p_article_id']];
                    $aRefer = Db::name('production_article_refer')->field('refer_content')->where($aWhere)->column('refer_content');
                    $aArticleMain = empty($aRefer) ? $aArticleMain : array_merge($aRefer,$aArticleMain);
                }
            }else{
                $aFile = json_decode($oArticle->getFileContent(['article_id' => $iArticleId]),true);

                $aFile = empty($aFile['data']) ? [] : $aFile['data'];
                $aArticleMain = empty($aFile['mains']) ? [] : $aFile['mains'];
            }
            $sContent = empty($aArticleMain) ? '' : implode("\n", array_unique($aArticleMain));
            if(empty($sContent)){
                return json_encode(array('status' => 4,'msg' => 'No article content found:'.$sQuestionFields));
            }


            //处理内容
            //过滤字符串
            $sContent = $oHelperFunction->filterAllTags($sContent);
            //将文章内容拆分参考文献
            $aDealContent = $this->dealContent($sContent);
            $sBefore= empty($aDealContent['before']) ? '' : $aDealContent['before'];
            $sReference = empty($aDealContent['after']) ?  '' :  $aDealContent['after'];
            if(in_array($sQuestionFields, ['attribute'])){//科学性和创新性
                $aChunkContent = $oHelperFunction->splitContent($sContent);
            }
            if($sQuestionFields == 'reference'){//参考文献
                if(empty($sReference)){
                    return json_encode(array('status' => 5,'msg' => 'Reference not matched successfully' ));
                }
                $aChunkContent = [$sReference];
            }
            if(!in_array($sQuestionFields, ['attribute','reference'])){
                $aChunkContent = $oHelperFunction->splitContent($sBefore);
            }
            $aArticle['reference'] = $sReference;
            $aArticle['content'] = empty($aChunkContent[0]) ? '' : $aChunkContent[0];
            if(count($aChunkContent) > 1){
                $aArticle['content'] = $aChunkContent;
            }
        }

        //内容处理
        $aArticle['queue_fields'] = $sQuestionFields;
        $aArticle['question_level'] = $sQuestionLevel;
        if(count($aChunkContent) <= 1){
            $aMessage = $oOpenAi->buildReviewPrompt($aArticle);
        }else{
            $aMessage = $oOpenAi->buildReviewPromptChunk($aArticle);
        }
        if(empty($aMessage)){
            return json_encode(['status' => 5,'msg' => 'AI Q&A content not obtained']);
        }
        //请求OPENAI接口
        $aParam = [
            'messages' => $aMessage,
            'model' => empty($aParam['api_model']) ? 'DeepSeek-V3' : $aParam['api_model'],
            'article_id' => empty($aArticle['article_id']) ? 0 : $aArticle['article_id'],
            'queue_fields' => $sQuestionFields,
            'question_level' => $sQuestionLevel,
            'journal_id' => empty($aArticle['journal_id']) ? 0 : $aArticle['journal_id']
        ];
        if(count($aChunkContent) > 1){
            return $oOpenAi->articleReviewDealChunk($aParam);
        }else{
            return $oOpenAi->articleReviewDeal($aParam);
        }
    }
    /**
     * @title 将文章内容拆分参考文献
     * @param sContent 文章内容
     */
    private function dealContent($sContent = '',$regex = null){
        if (empty($sContent)) {
            return ['before' => '', 'after' => ''];
        }

        // 1. 优化字符串长度计算
        $contentLength = mb_strlen($sContent);
        $searchStart = $contentLength > 5000 ? (int)($contentLength * 0.6) : 0;

        // 2. 截取搜索区域
        $searchContent = $searchStart > 0 
            ? mb_substr($sContent, $searchStart, null, 'UTF-8') 
            : $sContent;

        // 3. 正则模式优化 - 重点处理拼写错误和特殊格式
        if ($regex === null) {
            // 关键词列表增加容错处理
            $keywords = [
                'r?reference[s]?',  // 允许关键词前多一个r（处理Rreferences这类拼写错误）
                'bibliograph(?:y|ies)', 
                'works? cited', 
                'citation[s]?',
                'literature cited',
                'reference list'
            ];
            
            // 正则模式优化：
            // 1. 允许关键词与前面内容直接连接（解决"article.Rreferences"这种没有空格的情况）
            // 2. 增强对冒号和方括号的支持（匹配"References:[1]"这种格式）
            $pattern = sprintf(
                '/(?:^|\s|[(\[{<"\']|[\p{P}])?\s*\#*[*_]*\s*(%s)\s*[*_]*\s*[:\-–=.]?\s*(?:$|\s|[)\]}>"\'.|[\d{[])*/i',
                implode('|', $keywords)
            );
            $regex = $pattern;
        }

        // 4. 高效匹配 - 从字符串末尾开始搜索最后一个匹配项
        // 使用带偏移量的循环匹配找到最后一个符合条件的关键词
        $lastPos = 0;
        $matchFound = false;
        $offset = 0;
        $searchLen = mb_strlen($searchContent);

        // 从字符串末尾向前搜索，提高长文本效率
        while ($offset < $searchLen && preg_match($regex, $searchContent, $match, PREG_OFFSET_CAPTURE, $offset)) {
            $lastPos = $match[0][1];
            $matchFound = true;
            // 移动偏移量继续查找下一个匹配
            $offset = $lastPos + mb_strlen($match[0][0]);
        }

        if ($matchFound) {
            $refPosition = $searchStart + $lastPos;
            
            $process = static function($str) {
                return trim(str_replace("\n", '', $str));
            };
            
            return [
                'before' => $process(mb_substr($sContent, 0, $refPosition, 'UTF-8')),
                'after' => $process(mb_substr($sContent, $refPosition, null, 'UTF-8'))
            ];
        }

        // 未匹配时处理
        return [
            'before' => trim(str_replace("\n", '', $sContent)),
            'after' => ''
        ];
        // $lastPos = strrpos($sContent, 'Reference');
        // if ($lastPos === false) {
        //     $lastPos = strrpos($sContent, 'REFERENCE');
        //     if($lastPos === false){
        //         // 未找到 "Reference"，返回原字符串和空
        //         return ['before' => $sContent, 'after' => ''];
        //     }
        // }
        
        // // 拆分：关键词之前的内容
        // $before = substr($sContent, 0, $lastPos);
        // // 关键词及之后的内容（包含关键词本身）
        // $after = substr($sContent, $lastPos);
        // return ['before' => $before,'after' => $after];
    }

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

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

        //查询文章
        $oArticle = new Article;
        $aArticle = json_decode($oArticle->get($aParam),true);
        $aArticle = empty($aArticle['data']) ? [] : $aArticle['data'];
        if(empty($aArticle)){
            return json_encode(array('status' => 3,'msg' => 'No articles requiring review were found' ));
        }
        //查询文章审核内容
        $oAireview = new \app\common\Aireview;
        $aAireview = $oAireview->get($aParam);
        $aAireview = empty($aAireview['data']) ? [] : $aAireview['data'];
        return json_encode(array('status' => 1,'msg' => 'Successfully obtained article review content','data' => $aAireview,'article_data' => $aArticle));
    }
}