import { ElMessage } from 'element-plus'

function _basePath(path: string): string[] {
  if (Array.isArray(path)) return path
  return path.replace(/\[/g, '.').replace(/\]/g, '').split('.')
}

export function get(object: any, path: string, defaultValue = undefined): { key: string; value: any } {
  if (typeof object !== 'object') return defaultValue
  const resPath = _basePath(path)
  return {
    key: resPath.at(-1),
    value: resPath.reduce((o, k) => (o || {})[k], object) || defaultValue
  }
}

export function set(object: any, path: string, value: any) {
  if (typeof object !== 'object') return object
  _basePath(path).reduce((o, k, i, _) => {
    if (i === (_ as []).length - 1) {
      // 若遍历结束直接赋值
      o[k] = value
      return null
    } else if (k in o) {
      // 若存在对应路径，则返回找到的对象，进行下一次遍历
      return o[k]
    } else {
      // 若不存在对应路径，则创建对应对象，若下一路径是数字，新对象赋值为空数组，否则赋值为空对象
      o[k] = /^[0-9]{1,}$/.test(_[i + 1]) ? [] : {}
      return o[k]
    }
  }, object)
  return object
}
// 导出文件
export async function getExportFil(fun, params = {}, name) {
  try {
    const res = await fun({ ...params })
    const blob = new Blob([res], {
      type: 'application/vnd.ms-excel;charset=UTF-8'
    })
    const fileName = name + '.xls'
    const url = window.URL.createObjectURL(blob)
    if ('download' in document.createElement('a')) {
      const a = document.createElement('a')
      a.href = url
      a.download = fileName
      a.style.display = 'none'
      document.body.appendChild(a)
      a.click()
      URL.revokeObjectURL(a.href)
      document.body.removeChild(a)
    } else {
      const nav = window.navigator as any
      nav.msSaveBlob(blob, fileName)
    }
    // let link = document.createElement('a')
    // link.href = url
    // link.setAttribute('download', fileName)
    // link.click()
    // link = null
    ElMessage({
      type: 'success',
      message: '导出成功'
    })
  } catch (err) {
    ElMessage({
      type: 'error',
      message: err
    })
  }
}