/**
 * 评查详情页面
 * 
 * 功能概述:
 * - 显示文档评查结果和详细信息
 * - 支持查看文档内容及评查点高亮标记
 * - 提供评查点列表，分为通过、警告和错误三种类型
 * - 支持评查点处理，如一键替换、人工审核等功能
 * - 支持导出评查报告和下载原文件
 * 
 * 组件结构:
 * - FileInfo: 显示文件基本信息和操作按钮
 * - ReviewTabs: 页面选项卡，包括评查结果、AI智能分析和文件信息
 * - FilePreview: 文档预览组件，显示文档内容及高亮问题
 * - ReviewPointsList: 评查点列表组件，显示所有评查结果
 * - AIAnalysis: AI智能分析结果，提供综合评价
 * - FileDetails: 文件详情信息
 * 
 * 数据流转:
 * 1. 页面加载时从API获取评查详情数据
 * 2. 根据评查点ID关联文档中的高亮区域
 * 3. 点击评查点时在文档中定位对应位置
 * 4. 处理评查点时更新状态并反馈到UI
 * 
 * @author 中国烟草AI合同及卷宗审核系统开发团队
 */

import { type MetaFunction, type LoaderFunctionArgs } from "@remix-run/node";
import { useState, useEffect } from "react";
import { useNavigate, useLoaderData } from "@remix-run/react";
import {getDocument} from "~/api/files/documents";
import reviewsStyles from "~/styles/reviews.css?url";
import { getReviewPoints } from "~/api/evaluation_points/reviews";

// 导入评查详情页面组件
import {
  FileInfo,
  ReviewTabs,
  FilePreview,
  ReviewPointsList,
  AIAnalysis,
  FileDetails
} from "~/components/reviews";

// 从ReviewPointsList组件中导入ReviewPoint类型
import { type ReviewPoint } from '~/components/reviews';

/**
 * 文件信息组件
 * 显示文件名称、状态信息以及操作按钮（下载原文件、导出评查报告、确认评查结果）
 */
// 格式化文件大小
const formatFileSize = (bytes: number) => {
  if (bytes === 0) return "0 Bytes";
  const k = 1024;
  const sizes = ["Bytes", "KB", "MB", "GB", "TB"];
  const i = Math.floor(Math.log(bytes) / Math.log(k));
  return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + " " + sizes[i];
};

// 定义统计数据类型
interface Statistics {
  total: number;
  success: number;
  warning: number;
  error: number;
  score: number;
}

// 定义文件信息类型
interface FileInfo {
  fileName: string;
  contractNumber: string;
  fileSize: string;
  fileFormat: string;
  pageCount: number;
  uploadTime: string;
  uploadUser: string;
  auditStatus: number;
}

// 定义合同信息类型
interface ContractInfo {
  contractType: string;
  signDate: string;
  parties: {
    partyA: string;
    partyB: string;
  };
  amount: string;
  period: string;
}

// 定义评查信息类型
interface ReviewInfo {
  reviewTime: string;
  reviewModel: string;
  ruleGroup: string;
  result: string;
  issueCount: number;
}

// 定义文档内容类型
interface FileContent {
  title: string;
  contractNumber: string;
  parties: {
    partyA: {
      name: string;
      address: string;
      representative: string;
      phone: string;
    };
    partyB: {
      name: string;
      address: string;
      representative: string;
      phone: string;
    };
  };
  sections: {
    title: string;
    content: string;
  }[];
}

// 定义分析项类型
interface AnalysisItem {
  title: string;
  content: string;
  description: string;
}

// 定义分析数据类型
interface AnalysisData {
  riskAlerts: AnalysisItem[];
  suggestions: AnalysisItem[];
  summary: string;
}

// 定义评查数据类型
interface ReviewData {
  fileInfo: FileInfo;
  contractInfo: ContractInfo;
  reviewInfo: ReviewInfo;
  statistics: Statistics;
  fileContent: FileContent;
  reviewPoints: ReviewPoint[];
  aiAnalysis: AnalysisData;
}

export const meta: MetaFunction = () => {
  return [
    { title: "评查详情 - 中国烟草AI合同及卷宗审核系统" },
    {
      name: "description",
      content: "查看文档评查结果，处理问题点，确认评查结果"
    }
  ];
};

export function links() {
  return [{ rel: "stylesheet", href: reviewsStyles }];
}

export const handle = {
  breadcrumb: "评查详情"
};

export async function loader({ request }: LoaderFunctionArgs) {
  try {
    const url = new URL(request.url);
    const id = url.searchParams.get('id') || undefined;
    // console.log("id-------",id);
    if (!id) {
      return Response.json({ error: '评查ID不能为空' }, { status: 400 });
    }

    const documentData = await getDocument(id);
    if (documentData.error) {
      console.error("获取文档数据错误:", documentData.error);
      return Response.json({ error: documentData.error }, { status: documentData.status || 500 });
    }
    const reviewData = await getReviewPoints(id);

    console.log("reviewData-------",reviewData);
    if (reviewData.error) {
      console.error("获取评查点数据错误:", reviewData.error);
      return Response.json({ error: reviewData.error }, { status: reviewData.status || 500 });
    }

    return Response.json({
      document: documentData.data,
      reviewPoints: reviewData.data,
      statistics: reviewData.stats
    });
  } catch (error) {
    console.error('获取评查数据失败:', error);
    return Response.json({ error: '获取评查数据失败' }, { status: 500 });
  }
}

export default function ReviewDetails() {
  const navigate = useNavigate();
  const { document, reviewPoints, statistics } = useLoaderData<typeof loader>();
  const [isLoading, setIsLoading] = useState(false); // 已经通过loader加载了数据，不需要再显示加载状态
  const [activeTab, setActiveTab] = useState<string>('preview'); // 'preview', 'analysis', 'fileinfo'
  const [reviewData, setReviewData] = useState<ReviewData | null>(null);
  const [activeReviewPointId, setActiveReviewPointId] = useState<string | null>(null);
  
  // 模拟获取评查数据
  useEffect(() => {
    if (!document) return;
    
    // 构建文件信息对象
    const fileInfo = {
      fileName: document.name || "未知文件名",
      contractNumber: document.documentNumber || "未知编号",
      fileSize: document.size ? formatFileSize(document.size) : "未知大小",
      fileFormat: document.fileType ? document.fileType.toUpperCase() : "未知格式",
      pageCount: document.pageCount || 0,
      uploadTime: document.uploadTime || "未知时间",
      uploadUser: document.uploadUser || "未知用户",
      auditStatus: document.auditStatus || 0,
    };
    
    // 创建包含真实文档数据的评查数据对象
    const reviewDataObj: ReviewData = {
      // 使用真实文件信息
      fileInfo: fileInfo,
      // 其他字段暂时使用默认值
      contractInfo: getMockReviewData().contractInfo,
      reviewInfo: getMockReviewData().reviewInfo,
      statistics: statistics,
      fileContent: getMockReviewData().fileContent,
      reviewPoints: reviewPoints,
      aiAnalysis: getMockReviewData().aiAnalysis,
    };
    
    setReviewData(reviewDataObj);
    setIsLoading(false);
  }, [document, reviewPoints, statistics]);
  
  const handleTabChange = (tabKey: string) => {
    setActiveTab(tabKey);
  };
  
  const handleReviewPointSelect = (reviewPointId: string) => {
    setActiveReviewPointId(reviewPointId);
  };
  
  const handleReviewPointStatusChange = (reviewPointId: string, newStatus: string) => {
    // 更新评查点状态
    if (reviewData) {
      const updatedReviewPoints = reviewData.reviewPoints.map(point => 
        point.id === reviewPointId ? { ...point, status: newStatus } : point
      );
      
      setReviewData({
        ...reviewData,
        reviewPoints: updatedReviewPoints,
        statistics: calculateStatistics(updatedReviewPoints)
      });
    }
  };
  
  const handleConfirmResults = () => {
    alert('评查结果已确认');
    navigate('/reviews'); // 假设评查列表页面路径为 /reviews
  };
  
  return (
    <div className="container">
      {isLoading ? (
        <div className="flex justify-center items-center p-12">
          <div className="loading-spinner"></div>
          <span className="ml-3">加载中...</span>
        </div>
      ) : reviewData && (
        <>
          {/* 文件信息和操作按钮 */}
          <FileInfo 
            fileInfo={reviewData.fileInfo}
            onConfirmResults={handleConfirmResults}
          />
          
          {/* 选项卡 */}
          <ReviewTabs
            activeTab={activeTab}
            onTabChange={handleTabChange}
          >
            {/* 评查结果选项卡内容 */}
            {activeTab === 'preview' && (
              <div className="flex flex-col lg:flex-row space-y-4 lg:space-y-0 lg:space-x-4">
                {/* 左侧：文件预览 */}
                <div className="w-full lg:w-2/3">
                  <FilePreview 
                    fileContent={reviewData.fileContent}
                    reviewPoints={reviewData.reviewPoints}
                    activeReviewPointId={activeReviewPointId}
                  />
                </div>
                
                {/* 右侧：评查结果 */}
                <div className="w-full lg:w-1/3">
                  <ReviewPointsList
                    reviewPoints={reviewData.reviewPoints}
                    statistics={reviewData.statistics}
                    activeReviewPointId={activeReviewPointId}
                    onReviewPointSelect={handleReviewPointSelect}
                    onStatusChange={handleReviewPointStatusChange}
                  />
                </div>
              </div>
            )}
            
            {/* AI智能分析选项卡内容 */}
            {activeTab === 'analysis' && (
              <AIAnalysis
                analysisData={reviewData.aiAnalysis}
                score={reviewData.statistics.score}
                onConfirmResults={handleConfirmResults}
              />
            )}
            
            {/* 文件信息选项卡内容 */}
            {activeTab === 'fileinfo' && (
              <FileDetails
                fileInfo={reviewData.fileInfo}
                contractInfo={reviewData.contractInfo}
                reviewInfo={reviewData.reviewInfo}
              />
            )}
          </ReviewTabs>
        </>
      )}
    </div>
  );
}

// 计算评查统计数据
function calculateStatistics(reviewPoints: ReviewPoint[]): Statistics {
  const total = reviewPoints.length;
  const success = reviewPoints.filter(point => point.status === 'success').length;
  const warning = reviewPoints.filter(point => point.status === 'warning').length;
  const error = reviewPoints.filter(point => point.status === 'error').length;
  
  // 计算评分：通过占总数的百分比，错误项有额外惩罚
  const score = Math.round((success / total) * 100 - (error * 5));
  
  return {
    total,
    success,
    warning,
    error,
    score: Math.max(0, Math.min(100, score)) // 确保分数在0-100之间
  };
}

// 模拟评查数据
function getMockReviewData(): ReviewData {
  return {
    fileInfo: {
      fileName: "烟草产品销售合同（2023版）.docx",
      contractNumber: "XS-2023-1025-001",
      fileSize: "5.2MB",
      fileFormat: "DOCX",
      pageCount: 5,
      uploadTime: "2023-10-25 14:30:45",
      uploadUser: "张三",
      auditStatus: 0
    },
    contractInfo: {
      contractType: "销售合同",
      signDate: "2023年10月20日",
      parties: {
        partyA: "XX烟草公司",
        partyB: "YY贸易有限公司"
      },
      amount: "¥ 1,580,000.00",
      period: "2023年11月1日至2024年10月31日"
    },
    reviewInfo: {
      reviewTime: "2023-10-25 14:35:12",
      reviewModel: "DeepSeek",
      ruleGroup: "合同标准规则组",
      result: "warning",
      issueCount: 9
    },
    statistics: {
      total: 15,
      success: 6,
      warning: 7,
      error: 2,
      score: 75
    },
    fileContent: {
      title: "烟草产品销售合同",
      contractNumber: "XS-2023-1025-001",
      parties: {
        partyA: {
          name: "XX烟草公司",
          address: "XX省XX市XX区XX路XX号",
          representative: "张XX",
          phone: "123-4567-8901"
        },
        partyB: {
          name: "YY贸易有限公司",
          address: "XX省XX市XX区YY路YY号",
          representative: "李YY", 
          phone: "123-4567-8902"
        }
      },
      sections: [
        {
          title: "总则",
          content: "1.1 本合同适用于甲乙双方之间的烟草制品买卖事宜。\n1.2 双方应本着平等互利、诚实信用的原则履行本合同。"
        },
        {
          title: "合同标的物",
          content: "2.1 产品名称：烟草制品\n2.2 规格型号：如附件所列\n2.3 数量：5000箱\n2.4 质量要求：符合国家标准GB/T XXXXX-XXXX"
        },
        {
          title: "交货与付款",
          content: "3.1 交货时间：自合同签订之日起30日内。\n3.2 乙方应在收到货物之日起5个工作日内支付合同款项，甲方应在收到乙方全部付款后开具增值税专用发票，乙方应在收到发票后支付剩余款项。\n3.3 交货地点：乙方指定的仓库。\n3.4 运输方式：陆运，运费由甲方承担。"
        },
        {
          title: "合同文本",
          content: "本合同一式两份，甲乙双方各执一份，具有同等法律效力。"
        }
      ]
    },
    reviewPoints: [
      {
        id: "1",
        title: "付款条件描述不明确",
        groupName: "付款条款清晰性",
        // location: "交货与付款条款",
        status: "error",
        content: "乙方应在收到货物之日起5个工作日内支付合同款项，甲方应在收到乙方全部付款后开具增值税专用发票，乙方应在收到发票后支付剩余款项。",
        suggestion: "乙方应在收到货物验收合格之日起5个工作日内支付合同总额的70%，甲方收到该部分款项后3个工作日内向乙方开具等额增值税专用发票；乙方应在收到发票之日起5个工作日内支付剩余30%款项。",
        position: { section: "交货与付款", index: 2 },
        result: false
      },
      {
        id: "2",
        title: "违约责任条款缺失",
        groupName: "合同权利义务对等性",
        status: "warning",
        content: "如合同发生纠纷，双方应协商解决。",
        suggestion: "如合同发生纠纷，双方应友好协商解决；协商不成的，任何一方均有权向甲方所在地人民法院提起诉讼。任何一方未能履行本合同约定义务，应向守约方支付合同总金额的10%作为违约金；给对方造成损失的，还应赔偿由此产生的全部损失。",
        position: { section: "争议解决", index: 0 },
        result: false
      },
      {
        id: "3",
        title: "签章不完整",
        groupName: "合同签署规范性",
        status: "warning",
        content: "乙方（盖章）：YY贸易有限公司\n代表人签字：李YY\n日期：2023年10月20日",
        suggestion: "需要联系甲方补充公章",
        needsHumanReview: true,
        humanReviewNote: "需要联系甲方补充公章",
        position: { section: "签章", index: 0 },
        result: false
      },
      {
        id: "9",
        title: "交货方式描述模糊",
        groupName: "履行条款明确性",
        status: "success",
        content: "3.4 运输方式：陆运，运费由甲方承担。",
        suggestion: "建议补充具体的运输方式和时间",
        needsHumanReview: true,
        humanReviewNote: "经核实，该交货方式虽然描述不够详细，但符合行业惯例且双方已经多次合作，不会造成实际履行障碍。",
        humanReviewBy: "王法务",
        humanReviewTime: "2023-11-05 14:30:22",
        position: { section: "交货与付款", index: 4 },
        result: true
      },
      {
        id: "10",
        title: "法律适用条款缺失",
        groupName: "争议解决条款完整性",
        status: "error",
        content: "",
        suggestion: "第十三条 法律适用\n本合同的订立、效力、解释、履行及争议的解决均适用中华人民共和国法律。因本合同引起的或与本合同有关的任何争议，双方应友好协商解决。协商不成的，提交甲方所在地人民法院诉讼解决。",
        position: { section: "缺失", index: 0 },
        result: false
      }
    ],
    aiAnalysis: {
      riskAlerts: [
        {
          title: "风险提示",
          content: "本合同缺少违约责任条款，可能导致权责不明。",
          description: "根据《中华人民共和国民法典》第五百七十七条规定，建议增加违约责任条款，明确双方违约责任及赔偿方式。"
        },
        {
          title: "完整性检查",
          content: "本合同缺少法律适用条款。",
          description: "根据行业惯例，销售合同应明确约定适用法律和纠纷解决方式，以避免后续争议解决时的不确定性。"
        }
      ],
      suggestions: [
        {
          title: "优化建议",
          content: "建议完善付款条件描述。",
          description: "目前合同中关于付款条件的描述存在歧义，可能导致付款时间和条件不明确。建议按系统修改建议优化。"
        }
      ],
      summary: "本合同基本结构完整，主体内容清晰，但存在多处条款描述不完善的问题，主要体现在支付条件、违约责任、不可抗力、保密条款、合同终止条件等方面。这些问题虽不影响合同的基本合规性，但可能在合同履行过程中引发争议和纠纷。同时，合同签章不完整，也影响了合同的法律效力。建议对上述问题进行修改完善后再行签署。"
    }
  };
}