'use strict';

const Service = require('../core/base_service');

const { Op } = require('sequelize');

const moment = require('moment');

const fileName = "Exam";

class ExamService extends Service {
  // 管理系统新增考试信息
  async addExam(form) {
    const { ctx } = this;
    try {
      const result = await ctx.model.Examination.bulkCreate(form, { ignoreDuplicates: true });
      return result.length == 0 ? false : result;
    } catch (error) {
      const blockName = fileName + "--" + "addExam";
      ctx.app.middleware.log('../../serviceLog', blockName + ">>>>" + error);
      return 'error';
    }
  }

  // 管理系统查看考试信息
  async showExam(uid, body) {
    const { ctx } = this;
    try {
      let { offset, limit, searchOptions, sortOptions } = body;
      offset = (offset - 1) * limit;
      let attributes = ['uid', 'exam_name', 'status', 'application_start', 'application_end', 'exam_start', 'exam_end'],
        where = {}, order = [], dbOptions,
        joinSubstring = [],
        substring = ['uid', 'exam_name'],
        key = ['status'],
        between = ['application_start', 'application_end', 'exam_start', 'exam_end'];
      attributes.forEach(element => {
        if (searchOptions[element]) {
          if (searchOptions[element] == '*空') {
            if (joinSubstring.includes(element)) {
              where[element] = null;
            } else {
              where[element] = [null, ''];
            }
          } else if (joinSubstring.includes(element)) {
            let targetKeyArr = [];
            where[element] = targetKeyArr.length > 0 ? targetKeyArr : 'null';
          } else if (substring.includes(element)) {
            where[element] = { [Op.substring]: searchOptions[element] };
          } else if (key.includes(element)) {
            where[element] = searchOptions[element];
          } else if (between.includes(element)) {
            where[element] = { [Op.between]: [searchOptions[element][0], searchOptions[element][1]] };
          }
        }
        if (sortOptions[element] == true) {
          order.push([element, 'ASC']);
        } else if (sortOptions[element] == false) {
          order.push([element, 'DESC']);
        }
      });
      dbOptions = { attributes, offset, limit, where, order };
      const result = await ctx.model.Examination.findAndCountAll(dbOptions);
      return result.rows.length == 0 ? false : result;
    } catch (error) {
      const blockName = fileName + "--" + "showExam";
      ctx.app.middleware.log('../../serviceLog', blockName + ">>>>" + error);
      return 'error';
    }
  }

  // 管理系统编辑考试信息
  async editExam(uid, modelType, updateMsg, requestMsg) {
    const { ctx } = this;
    try {
      const result = await ctx.model.Manager.findOne({ where: { uid } });
      if (!result || result.dataValues.role < 1) return false;
      let where = {};
      if (modelType == "single") {
        const { exam_name, status, application_start, application_end, exam_start, exam_end } = requestMsg;
        where = { exam_name, status, application_start, application_end, exam_start, exam_end };
      } else if (modelType == "multiple") {
        let exam_name = [], status = [], application_start = [], application_end = [], exam_start = [], exam_end = [];
        for (const key in requestMsg) {
          requestMsg[key].forEach(element => {
            exam_name.push(element.exam_name);
            status.push(element.status);
            application_start.push(element.application_start);
            application_end.push(element.application_end);
            exam_start.push(element.exam_start);
            exam_end.push(element.exam_end);
          });
        }
        where = { exam_name, status, application_start, application_end, exam_start, exam_end };
      }
      const resultList = await ctx.model.Examination.update(updateMsg, { where });
      return resultList[0] == 0 ? false : resultList;
    } catch (error) {
      const blockName = fileName + "--" + "editExam";
      ctx.app.middleware.log('../../serviceLog', blockName + ">>>>" + error);
      return 'error';
    }
  }

  // 管理系统删除考试信息
  async deleteExam(uid, modelType, password, requestMsg) {
    const { ctx } = this;
    const systemMonitoring = {
      operate: 2,
      operate_msg: '删除用户账号信息',
      type: 0,
      status: 0,
      affect_entries: 0,
      user: uid,
      created_at: new Date()
    };
    try {
      const result = await ctx.model.Manager.findOne({ where: { uid } });
      if (!result || result.dataValues.password !== this.shaForm(password, this.decryptRequest(result.dataValues.salt)) || result.dataValues.role < 2) {
        if (!result) systemMonitoring.status = 0;
        else if (result.dataValues.password !== this.shaForm(password, this.decryptRequest(result.dataValues.salt))) systemMonitoring.status = 1;
        else if (result.dataValues.role < 2) systemMonitoring.status = 2;
        await ctx.model.Monitoring.create(systemMonitoring);
        return false;
      };
      let where = {};
      if (modelType == "single") {
        const { exam_name, status, application_start, application_end, exam_start, exam_end } = requestMsg;
        where = { exam_name, status, application_start, application_end, exam_start, exam_end };
      } else if (modelType == "multiple") {
        let exam_name = [], status = [], application_start = [], application_end = [], exam_start = [], exam_end = [];
        for (const key in requestMsg) {
          requestMsg[key].forEach(element => {
            exam_name.push(element.exam_name);
            status.push(element.status);
            application_start.push(element.application_start);
            application_end.push(element.application_end);
            exam_start.push(element.exam_start);
            exam_end.push(element.exam_end);
          });
        }
        where = { exam_name, status, application_start, application_end, exam_start, exam_end };
      }
      const resultList = await ctx.model.Examination.destroy({ where });
      systemMonitoring.status = resultList == 0 ? 3 : 4;
      systemMonitoring.affect_entries = resultList;
      await ctx.model.Monitoring.create(systemMonitoring);
      return resultList == 0 ? false : true;
    } catch (error) {
      systemMonitoring.status = 5;
      await ctx.model.Monitoring.create(systemMonitoring);
      const blockName = fileName + "--" + "deleteExam";
      ctx.app.middleware.log('../../serviceLog', blockName + ">>>>" + error);
      return 'error';
    }
  }

  // 管理系统导出考试信息数据
  async downloadExamData(uid, searchMsg) {
    const { ctx } = this;
    try {
      const user = await ctx.model.Manager.findOne({ where: { uid } });
      if (!user || user.dataValues.role < 1) return false;
      let { searchOptions, sortOptions } = searchMsg;
      let attributes = ['uid', 'exam_name', 'status', 'application_start', 'application_end', 'exam_start', 'exam_end'],
        where = {}, order = [], dbOptions,
        joinSubstring = [],
        substring = ['uid', 'exam_name'],
        key = ['status'],
        between = ['application_start', 'application_end', 'exam_start', 'exam_end'];
      attributes.forEach(element => {
        if (searchOptions[element]) {
          if (searchOptions[element] == '*空') {
            if (joinSubstring.includes(element)) {
              where[element] = null;
            } else {
              where[element] = [null, ''];
            }
          } else if (joinSubstring.includes(element)) {
            let targetKeyArr = [];
            where[element] = targetKeyArr.length > 0 ? targetKeyArr : 'null';
          } else if (substring.includes(element)) {
            where[element] = { [Op.substring]: searchOptions[element] };
          } else if (key.includes(element)) {
            where[element] = searchOptions[element];
          } else if (between.includes(element)) {
            where[element] = { [Op.between]: [searchOptions[element][0], searchOptions[element][1]] };
          }
        }
        if (sortOptions[element] == true) {
          order.push([element, 'ASC']);
        } else if (sortOptions[element] == false) {
          order.push([element, 'DESC']);
        }
      });
      dbOptions = { attributes, where, order };
      const result = await ctx.model.Examination.findAll(dbOptions);
      if (result.length == 0) return { code: false };
      let data = [];
      const statusOptions = [
        {
          value: "0",
          label: "即将进行"
        },
        {
          value: "1",
          label: "正在进行"
        },
        {
          value: "2",
          label: "已经结束"
        },
      ];
      result.forEach(element => {
        statusOptions.forEach((item) => {
          if (item.value == element.dataValues["status"]) {
            element.dataValues["status"] = item.label;
          }
        });
        element.dataValues.application_start = moment
          .utc(element.dataValues.application_start)
          .add(8, "hours")
          .format("YYYY年MM月DD日HH时mm分ss秒");
        element.dataValues.application_end = moment
          .utc(element.dataValues.application_end)
          .add(8, "hours")
          .format("YYYY年MM月DD日HH时mm分ss秒");
        element.dataValues.exam_start = moment
          .utc(element.dataValues.exam_start)
          .add(8, "hours")
          .format("YYYY年MM月DD日HH时mm分ss秒");
        element.dataValues.exam_end = moment
          .utc(element.dataValues.exam_end)
          .add(8, "hours")
          .format("YYYY年MM月DD日HH时mm分ss秒");
        data.push(element.dataValues);
      });
      return { code: true, data };
    } catch (error) {
      const blockName = fileName + "--" + "downloadExamData";
      ctx.app.middleware.log('../../serviceLog', blockName + ">>>>" + error);
      return 'error';
    }
  }
}

module.exports = ExamService;