'use strict';
const qiniu = require('qiniu');
const moment = require('moment');
const XLSX = require('xlsx-js-style');
const superagent = require('superagent');
const { convertHTMLToDOCX } = require('../utils/tools');

const getQwenUsage = (body = {}) => {
   const usage = body?.usage || {};
   const inputTokens = Number(usage.prompt_tokens || usage.input_tokens || 0);
   const outputTokens = Number(usage.completion_tokens || usage.output_tokens || 0);
   const totalTokens = Number(usage.total_tokens || inputTokens + outputTokens || 0);
   return {
      inputTokens: Math.max(0, Math.floor(inputTokens)),
      outputTokens: Math.max(0, Math.floor(outputTokens)),
      totalTokens: Math.max(0, Math.floor(totalTokens)),
   };
};

const reportQuoteOptimizeUsage = async (ctx, { body, runningTime, quoteData }) => {
   const usage = getQwenUsage(body);
   if (!usage.totalTokens) return;

   const centerRequest = ctx?.app?.fs?.centerRequest;
   if (!centerRequest?.post) {
      ctx.logger?.warn?.('ai-center token统计接口未初始化，跳过引用优化token上报');
      return;
   }

   try {
      await centerRequest.post('/chatLogs/report', {
         body: {
            app_id: 'ai-query',
            chat_item_data_id: String(quoteData?._id || quoteData?.id || ''),
            module_type: 'quote_optimize',
            fastgpt_source: 'qwen',
            origin_ip: ctx.ip || '',
            running_time: runningTime,
            duration_seconds: runningTime,
            input_tokens: usage.inputTokens,
            output_tokens: usage.outputTokens,
            total_tokens: usage.totalTokens,
            source_platform: 'ai-query',
            source_key: 'aichat_quote_optimize',
            model: body?.model || 'qwen3.6-flash'
         }
      });
   } catch (error) {
      ctx.logger?.error?.('引用优化token上报失败:', error);
   }
};

//[转发知识库列表]
module.exports.getKnowledgeList = async (ctx, next) => {
   try {
      const { header, query } = ctx;
      const token =  query.token;
      const {knowledgeUrl} = ctx.config.aiCenterUrl;
      const requestQuery = {
         page: query.page || 1,
         pageSize: query.pageSize || 12,
         parentId: query.parentId === undefined ? 'null' : query.parentId,
      };
      if (query.keyword) requestQuery.keyword = query.keyword;
      if (query.search) requestQuery.search = query.search;
      if (query.userId) requestQuery.userId = query.userId;
      if (query.type) requestQuery.type = query.type;

      const res = await superagent
         .get(knowledgeUrl)
         .set('Accept', 'application/json')
         .set('Content-Type', 'application/json')
         .set('token', token)
         .query(requestQuery);

      ctx.status = res.status || 200;
      ctx.body = res.body;
   } catch (error) {
      const status = error?.status || error?.response?.status || 400;
      const body = error?.response?.body;
      const text = error?.response?.text;
      ctx.logger.error('转发知识库列表失败:', error);
      ctx.status = status;
      ctx.body = body || {
         message: text || error.message || '获取知识库列表失败',
      };
   }
};

module.exports.downloadScheme = async (ctx, next) => {
   try {
      const { models } = ctx.app.fs.dc;
      const { qiniu: { dmn: domain, bkt: bucket, ak: accessKey, sk: secretKey } } = ctx.config;
      const { content, dataId, OS } = ctx.request.body;
      if (!content || !dataId) { throw '缺少参数' };
      if (OS === 'android' || OS === 'ios') {
         let result;
         const cache = await models.ChatSchemeFileCache.findOne({ where: { dataId }, raw: true });
         if (cache) {
            result = cache;
         } else {
            const docxBuffer = await convertHTMLToDOCX(content);
            // 上传七牛云
            const mac = new qiniu.auth.digest.Mac(accessKey, secretKey);
            const options = { scope: bucket };
            const putPolicy = new qiniu.rs.PutPolicy(options);
            const uploadToken = putPolicy.uploadToken(mac);
            const formUploader = new qiniu.form_up.FormUploader();
            const putExtra = new qiniu.form_up.PutExtra();
            const key = `ai-query/chat-schema/${moment().format('YYYYMMDDHHmmss')}/方案-${dataId}.docx`;
            const config = new qiniu.conf.Config();
            config.zone = qiniu.zone.Zone_z0;
            const uploadResult = await new Promise((resolve, reject) => {
               formUploader.put(uploadToken, key, docxBuffer, putExtra, (respErr, respBody, respInfo) => {
                  if (respErr) {
                     reject(respErr);
                  } else {
                     resolve(respBody);
                  }
               })
            })
            // 保存到数据库
            const { key: qiniuKey } = uploadResult;
            const url = `${domain}/${qiniuKey}`;
            await models.ChatSchemeFileCache.create({ dataId, fileUrl: url });
            result = { dataId, fileUrl: url };
         }
         ctx.set('Content-Type', 'application/json');
         ctx.status = 200;
         ctx.body = result;
      } else {
         const docxBuffer = await convertHTMLToDOCX(content);
         ctx.set('Content-Type', 'application/vnd.openxmlformats-officedocument.wordprocessingml.document');
         ctx.set('Content-Disposition', `attachment; filename=${encodeURIComponent(`方案`)}.docx`);
         ctx.body = docxBuffer;
         ctx.status = 200;
      }
   } catch (error) {
      ctx.logger.log(error);
      ctx.status = 400;
      ctx.body = {
         message: typeof error == 'string' ? error : '下载失败'
      };
   }
}

module.exports.downloadWorkingHoursEstimate = async (ctx, next) => {
   try {
      const { body } = ctx.request;
      const { qiniu: { dmn: domain, bkt: bucket, ak: accessKey, sk: secretKey } } = ctx.config;

      // 验证数据完整性
      if (!body || !body.project_overview || !body.requirement_breakdown || !body.estimation_summary) {
         throw '缺少必要的数据字段';
      }

      // 创建新的工作簿
      const workbook = XLSX.utils.book_new();

      // 创建项目概览工作表
      const projectOverviewData = [
         ['项目概览'],
         [''],
         ['项目名称', body.project_overview.project_name || ''],
         ['项目类型', body.project_overview.project_type || ''],
         ['预估规模', body.project_overview.estimated_scale || '']
      ];

      const projectOverviewSheet = XLSX.utils.aoa_to_sheet(projectOverviewData);

      // 设置样式
      projectOverviewSheet['A1'] = {
         v: '项目概览',
         s: {
            font: { bold: true, sz: 16, color: { rgb: "FFFFFF" } },
            fill: { bgColor: { indexed: 64 }, fgColor: { rgb: "4F81BD" } },
            alignment: { horizontal: "center", vertical: "center" }
         }
      };

      // 设置列宽
      projectOverviewSheet['!cols'] = [{ width: 15 }, { width: 30 }];
      // 合并标题单元格
      projectOverviewSheet['!merges'] = [{ s: { r: 0, c: 0 }, e: { r: 0, c: 1 } }];

      XLSX.utils.book_append_sheet(workbook, projectOverviewSheet, '项目概览');

      // 创建需求分解工作表
      const requirementData = [
         ['需求分解详情'],
         [''],
         ['业务域', '功能单元', '任务描述', '参考任务描述', '管理/h', '研发/h', '测试/h', '任务工时统计/h', '功能工时统计/h', '域工时统计/h']
      ];

      // 填充需求分解数据
      let mergeRanges = []; // 用于存储需要合并的单元格范围
      let totalManagementHours = 0;
      let totalDevelopmentHours = 0;
      let totalTestingHours = 0;
      let totalProjectHours = 0;
      let totalUnitHours = 0; // 功能工时统计总和
      let totalDomainHours = 0; // 域工时统计总和

      body.requirement_breakdown.forEach((domain, domainIndex) => {
         let domainStartRow = requirementData.length;
         let domainTaskCount = 0;
         let domainManagementHours = 0;
         let domainDevelopmentHours = 0;
         let domainTestingHours = 0;

         // 累加域工时到总计
         totalDomainHours += domain.domain_total_hours || 0;

         domain.functional_units.forEach((unit, unitIndex) => {
            let unitStartRow = requirementData.length;
            let unitManagementHours = 0;
            let unitDevelopmentHours = 0;
            let unitTestingHours = 0;

            // 累加功能单元工时到总计
            totalUnitHours += unit.unit_total_hours || 0;

            unit.tasks.forEach((task, taskIndex) => {
               const managementHours = task.management?.subtotal_hours || 0;
               const developmentHours = task.development?.subtotal_hours || 0;
               const testingHours = task.testing?.subtotal_hours || 0;

               // 累加各级别的工时
               unitManagementHours += managementHours;
               unitDevelopmentHours += developmentHours;
               unitTestingHours += testingHours;
               domainManagementHours += managementHours;
               domainDevelopmentHours += developmentHours;
               domainTestingHours += testingHours;
               totalManagementHours += managementHours;
               totalDevelopmentHours += developmentHours;
               totalTestingHours += testingHours;

               requirementData.push([
                  (unitIndex === 0 && taskIndex === 0) ? domain.business_domain : '',
                  (taskIndex === 0) ? unit.unit_name : '',
                  task.task_description || '',
                  task.reference_description || '',
                  managementHours,
                  developmentHours,
                  testingHours,
                  task.total_task_hours || 0,
                  (taskIndex === 0) ? (unit.unit_total_hours || 0) : '',
                  (unitIndex === 0 && taskIndex === 0) ? (domain.domain_total_hours || 0) : ''
               ]);

               domainTaskCount++;
            });

            // 记录功能单元合并范围
            if (unit.tasks.length > 1) {
               mergeRanges.push({
                  s: { r: unitStartRow, c: 1 }, // 功能单元列
                  e: { r: unitStartRow + unit.tasks.length - 1, c: 1 }
               });
               mergeRanges.push({
                  s: { r: unitStartRow, c: 8 }, // 功能工时统计列
                  e: { r: unitStartRow + unit.tasks.length - 1, c: 8 }
               });
            }
         });

         // 记录业务域合并范围
         if (domainTaskCount > 1) {
            mergeRanges.push({
               s: { r: domainStartRow, c: 0 }, // 业务域列
               e: { r: domainStartRow + domainTaskCount - 1, c: 0 }
            });
            mergeRanges.push({
               s: { r: domainStartRow, c: 9 }, // 域工时统计列
               e: { r: domainStartRow + domainTaskCount - 1, c: 9 }
            });
         }
      });

      totalProjectHours = totalManagementHours + totalDevelopmentHours + totalTestingHours;

      // 添加项目总计行
      requirementData.push([
         '总计', '', '', '',
         totalManagementHours,
         totalDevelopmentHours,
         totalTestingHours,
         totalProjectHours,
         totalUnitHours,
         totalDomainHours
      ]);

      const requirementSheet = XLSX.utils.aoa_to_sheet(requirementData);

      // 设置标题样式
      requirementSheet['A1'] = {
         v: '需求分解详情',
         s: {
            font: { bold: true, sz: 16, color: { rgb: "FFFFFF" } },
            fill: { bgColor: { indexed: 64 }, fgColor: { rgb: "4F81BD" } },
            alignment: { horizontal: "center", vertical: "center" }
         }
      };

      // 设置表头样式
      for (let col = 0; col < 10; col++) {
         const cellRef = XLSX.utils.encode_cell({ r: 2, c: col });
         if (requirementSheet[cellRef]) {
            requirementSheet[cellRef].s = {
               font: { bold: true, color: { rgb: "FFFFFF" } },
               fill: { bgColor: { indexed: 64 }, fgColor: { rgb: "4F81BD" } },
               alignment: { horizontal: "center", vertical: "center" },
               border: {
                  top: { style: "thin", color: { rgb: "000000" } },
                  bottom: { style: "thin", color: { rgb: "000000" } },
                  left: { style: "thin", color: { rgb: "000000" } },
                  right: { style: "thin", color: { rgb: "000000" } }
               }
            };
         }
      }

      // 设置数据行样式和边框
      for (let row = 3; row < requirementData.length; row++) {
         for (let col = 0; col < 10; col++) {
            const cellRef = XLSX.utils.encode_cell({ r: row, c: col });
            if (requirementSheet[cellRef]) {
               const isTotalRow = requirementSheet[cellRef].v &&
                  requirementSheet[cellRef].v.toString() === '总计';

               requirementSheet[cellRef].s = {
                  alignment: { horizontal: "left", vertical: "center" },
                  font: isTotalRow ? { bold: true } : {},
                  fill: isTotalRow ? { bgColor: { indexed: 64 }, fgColor: { rgb: "E6F2FF" } } : {},
                  border: {
                     top: { style: "thin", color: { rgb: "000000" } },
                     bottom: { style: "thin", color: { rgb: "000000" } },
                     left: { style: "thin", color: { rgb: "000000" } },
                     right: { style: "thin", color: { rgb: "000000" } }
                  }
               };
            }
         }
      }

      // 设置列宽
      requirementSheet['!cols'] = [
         { width: 15 }, { width: 20 }, { width: 35 }, { width: 30 },
         { width: 10 }, { width: 10 }, { width: 10 }, { width: 15 },
         { width: 15 }, { width: 15 }
      ];

      // 合并标题单元格和数据单元格
      requirementSheet['!merges'] = [
         { s: { r: 0, c: 0 }, e: { r: 0, c: 9 } }, // 标题行合并
         ...mergeRanges // 添加数据行的合并范围
      ];      XLSX.utils.book_append_sheet(workbook, requirementSheet, '需求分解');

      // 创建评估汇总工作表
      const summaryData = [
         ['评估汇总'],
         [''],
         ['公司标准总工时', body.estimation_summary.company_standard_total_hours || 0],
         [''],
         ['功能点分析'],
         ['内部逻辑文件数(ILF)', body.estimation_summary.function_point_analysis?.ilf_count || 0],
         ['外部接口文件数(EIF)', body.estimation_summary.function_point_analysis?.eif_count || 0],
         ['未调整功能点(UFP)', body.estimation_summary.function_point_analysis?.ufp || 0],
         ['软件类型因子', body.estimation_summary.function_point_analysis?.software_type_factor || 0],
         ['复用因子', body.estimation_summary.function_point_analysis?.reuse_factor || 0],
         ['调整后功能点', body.estimation_summary.function_point_analysis?.adjusted_fp || 0],
         ['基于功能点的工时', body.estimation_summary.function_point_analysis?.fp_based_hours || 0],
         [''],
         ['最终推荐工时', body.estimation_summary.final_recommended_hours || 0],
         ['风险评估', body.estimation_summary.risk_assessment || '']
      ];

      const summarySheet = XLSX.utils.aoa_to_sheet(summaryData);

      // 设置样式
      summarySheet['A1'] = {
         v: '评估汇总',
         s: {
            font: { bold: true, sz: 16, color: { rgb: "FFFFFF" } },
            fill: { bgColor: { indexed: 64 }, fgColor: { rgb: "4F81BD" } },
            alignment: { horizontal: "center", vertical: "center" }
         }
      };

      summarySheet['A5'] = {
         v: '功能点分析',
         s: {
            font: { bold: true, sz: 14, color: { rgb: "FFFFFF" } },
            fill: { bgColor: { indexed: 64 }, fgColor: { rgb: "92A9D1" } },
            alignment: { horizontal: "center", vertical: "center" }
         }
      };

      // 设置列宽
      summarySheet['!cols'] = [{ width: 20 }, { width: 25 }];
      // 合并标题单元格
      summarySheet['!merges'] = [
         { s: { r: 0, c: 0 }, e: { r: 0, c: 1 } },
         { s: { r: 4, c: 0 }, e: { r: 4, c: 1 } }
      ];

      XLSX.utils.book_append_sheet(workbook, summarySheet, '评估汇总');

      // 生成XLSX缓冲区
      const xlsxBuffer = XLSX.write(workbook, {
         bookType: 'xlsx',
         type: 'buffer',
         cellStyles: true
      });

      // 上传到七牛云
      const mac = new qiniu.auth.digest.Mac(accessKey, secretKey);
      const options = { scope: bucket };
      const putPolicy = new qiniu.rs.PutPolicy(options);
      const uploadToken = putPolicy.uploadToken(mac);
      const formUploader = new qiniu.form_up.FormUploader();
      const putExtra = new qiniu.form_up.PutExtra();

      const timestamp = moment().format('YYYYMMDDHHmmss');
      const key = `ai-query/working-hours-estimate/${timestamp}/工时评估-${body.project_overview.project_name || 'project'}.xlsx`;

      const config = new qiniu.conf.Config();
      config.zone = qiniu.zone.Zone_z0;

      const uploadResult = await new Promise((resolve, reject) => {
         formUploader.put(uploadToken, key, xlsxBuffer, putExtra, (respErr, respBody, respInfo) => {
            if (respErr) {
               reject(respErr);
            } else {
               resolve(respBody);
            }
         });
      });

      // 构造七牛云URL
      const { key: qiniuKey } = uploadResult;
      const url = `${domain}/${qiniuKey}`;

      ctx.status = 200;
      ctx.body = {
         success: true,
         message: '工时评估报告生成成功',
         fileUrl: url,
         fileName: `${body.project_overview.project_name || 'project'}.xlsx`
      };

   } catch (error) {
      ctx.logger.error('生成工时评估报告失败:', error);
      ctx.status = 400;
      ctx.body = {
         success: false,
         message: typeof error === 'string' ? error : '生成工时评估报告失败',
         error: error.message || error
      };
   }
}

//[优化引用数据]
module.exports.optimizeQuoteData = async (ctx, next) => {
   try {
      const startTime = Date.now();
      const { quoteData } = ctx.request.body || {};
      const content = quoteData?.q || quoteData?.content || '';
      const sourceName = quoteData?.sourceName || quoteData?.collection?.name || '';
      const updateTime = quoteData?.updateTime || quoteData?.collection?.updateTime || '';
      const linkMeta = {
         sourceName,
         updateTime,
         collectionId: quoteData?.collectionId || quoteData?.collection?.collection_id || quoteData?.collection?._id,
         sourceId: quoteData?.sourceId,
         datasetId: quoteData?.datasetId,
         collection: quoteData?.collection
      };
      const apiUrl = 'https://dashscope.aliyuncs.com/compatible-mode/v1/chat/completions';
      const appKey = ctx.app.fs.config.ali.appKey

      if (!content) { throw '缺少引用内容' };
      if (!appKey) { throw '千问优化应用未配置' };

      const requestBody = {
         model: 'qwen3.6-flash',
         stream: false,
         enable_thinking: false,
         messages: [{
            role: 'user',
            content: [
               '请把下面的引用正文整理为标准 Markdown，标题从三级标题（###）开始。',
               '只允许结构化排版，不得增删事实内容，不得改写数字、单位、专有名词、时间和链接。',
               '如正文中已有 Markdown 链接或 URL，必须原样保留 href/url，不要改写、补全或删除。',
               '只返回整理后的 Markdown 正文，不要返回解释、代码块或 JSON。',
               sourceName ? `文件名：${sourceName}` : '',
               updateTime ? `时间：${updateTime}` : '',
               '引用正文：',
               content
            ].join('\n')
         }]
      };

      const res = await superagent
         .post(apiUrl)
         .send(requestBody)
         .set({
            Authorization: `Bearer ${appKey}`,
            'Content-Type': 'application/json'
         });

      const body = res.body || JSON.parse(res.text || '{}');
      const contentMd = body?.choices?.[0]?.message?.content || '';
      const runningTime = Number(((Date.now() - startTime) / 1000).toFixed(3));

      reportQuoteOptimizeUsage(ctx, {
         body,
         runningTime,
         quoteData
      });

      ctx.status = 200;
      ctx.body = {
         code: 200,
         data: {
            ...quoteData,
            ...linkMeta,
            q: contentMd || content,
            content: contentMd,
            originalQ: quoteData?.q,
            originalContent: quoteData?.content,
            raw: body
         }
      };
   } catch (error) {
      ctx.logger.error('优化引用数据失败:', error);
      ctx.status = 400;
      ctx.body = {
         message: typeof error == 'string' ? error : '优化引用数据失败'
      };
   }
};