'use strict';

const Service = require('egg').Service;
const ExcelJS = require('exceljs');
class TemplateService extends Service {
  // 创建excel模板
  async excel({ type, _this }) {
    const workbook = new ExcelJS.Workbook();
    const sheet = workbook.addWorksheet('Sheet');
    const exportFiled = _this.app.config.exportFiled[`export${type}`];
    sheet.columns = exportFiled.map(e => ({ header: e.title, key: e.name, width: 30 }));
    return await workbook.xlsx.writeFile(`${_this.app.config.templatePath}/template${type}.xlsx`).then(function() {
      _this.ctx.set('Content-Type', 'application/vnd.ms-excel;charset=UTF-8');
      return `${_this.app.config.templatePath}/template${type}.xlsx`;
    }, function(err) {
      return err;
    });
  }
}

module.exports = TemplateService;