import Docxtemplater from 'docxtemplater'
import PizZip from 'pizzip'
import JSZipUtils from 'jszip-utils'
import { saveAs } from 'file-saver'

export const ExportBriefDataDocx = (tempDocxPath, data, fileName) => {
  var expressions = require('angular-expressions')
  var assign = require('lodash/assign')
  expressions.filters.lower = function(input) {
    // This condition should be used to make sure that if your input is
    // undefined, your output will be undefined as well and will not
    // throw an error
    if (!input) return input
    // toLowerCase() 方法用于把字符串转换为小写。
    return input.toLowerCase()
  }
  function angularParser(tag) {
    tag = tag
      .replace(/^\.$/, 'this')
      .replace(/(’|‘)/g, "'")
      .replace(/(“|”)/g, '"')
    const expr = expressions.compile(tag)
    return {
      get: function(scope, context) {
        let obj = {}
        const scopeList = context.scopeList
        const num = context.num
        for (let i = 0, len = num + 1; i < len; i++) {
          obj = assign(obj, scopeList[i])
        }
        return expr(scope, obj)
      }
    }
  }
  JSZipUtils.getBinaryContent(tempDocxPath, (error, content) => {
    if (error) {
      console.log(error)
    }

    // 创建一个JSZip实例，内容为模板的内容
    // let zip = new JSZip(content); //用PizZip替代
    const zip = new PizZip(content)
    // 创建并加载 Docxtemplater 实例对象
    const doc = new Docxtemplater(zip, { parser: angularParser })
    // 设置模板变量的值
    doc.setData(data)
    try {
      // 呈现文档，会将内部所有变量替换成值，
      doc.render()
    } catch (error) {
      const e = {
        message: error.message,
        name: error.name,
        stack: error.stack,
        properties: error.properties

      }
      console.log({ error: e })
      // 当使用json记录时，此处抛出错误信息
      throw error
    }
    // 生成一个代表Docxtemplater对象的zip文件（不是一个真实的文件，而是在内存中的表示）
    const out = doc.getZip().generate({
      type: 'blob',
      mimeType: 'application/vnd.openxmlformats-officedocument.wordprocessingml.document'
    })
    // 将目标文件对象保存为目标类型的文件，并命名
    saveAs(out, fileName)
  })
}