import mammoth from 'mammoth/mammoth.browser.min.js'
import { FaMessageBox } from '../../../src/index'

export default {
  open: editor => FaMessageBox.confirm({
    icon: null,
    input: 'file',
    inputAttributes: {
      placeholder: '将 .docx 文件拖到此处，或点击上传',
      multiple: true,
    },
    titleText: '插入 Word 文档',
    confirmButtonText: '确定',
    cancelButtonText: '取消',
    showLoaderOnConfirm: true,
    preConfirm: (fileList) => {
      if (fileList) {
        return Promise.allSettled([...fileList].map(file =>
          new Promise((resolve, reject) => {
            if (!file.name.endsWith('.docx')) {
              reject(new Error('仅支持 docx 格式'))
            }

            const reader = new FileReader()
            reader.onload = async (e) => {
              const arrayBuffer = e.target.result
              if (arrayBuffer.byteLength) {
                mammoth.convertToHtml({ arrayBuffer }).then((res) => {
                  const { value } = res
                  console.info(`${file.name} 解析结果：`, res)
                  if (value) {
                    resolve(value)
                  }
                  else {
                    reject(new Error(`${file.name} 内容为空`))
                  }
                }).catch((err) => {
                  reject(err)
                })
              }
              else {
                reject(new Error(`${file.name} 内容为空`))
              }
            }
            reader.readAsArrayBuffer(file)
          }),
        )).then((results) => {
          results.forEach((result) => {
            const { status, value, reason } = result
            if (status === 'fulfilled') {
              editor.insertContent(value)
            }
            else {
              if (reason) {
                if (typeof reason === 'string') {
                  FaMessageBox.showValidationMessage(reason)
                }
                else {
                  console.error(reason)
                  FaMessageBox.showValidationMessage('解析失败')
                }
              }
            }
          })
        })
      }
      else {
        FaMessageBox.showValidationMessage('未选择任何文件')
      }
    },
  }),

}