self-constructing_graph/src/utils/app.ts

import { getSessionVar } from '@/utils/session'
/**
 * 重置一个参数对象
 * @param args
 * @param def
 */
export function resetArgs<T>(args: T, def: Partial<T> = {}): T {

  let val: { [k: string]: any } = {}

  for (let key in args) {
    if (def.hasOwnProperty(key)) {
      val[key] = def[key]
    } else {
      if (Array.isArray(args[key])) val[key] = [];
      if ('string' == typeof args[key]) val[key] = '';
      if ('number' == typeof args[key]) val[key] = null;
      if ('boolean' == typeof args[key]) val[key] = false;
    }
  }
  return val as T
}

/**
 * 下载或者保存一个Blob
 * @param blob
 * @param fileName
 * @param isOpen
 * 接口返回数据流时，如果是pdf可以设置isOpen直接新窗口打开
 * export function exportReport(params: { fileCode:string }) {
 *   return request({
 *     responseType:"blob",
 *     closeResponseInterceptors:true,
 *     url: '/customer-service/open/api/report/getReport',
 *     method: 'get',
 *     params
 *   })
 * }
 */
export function saveBlob(blob: Blob, fileName: string, isOpen = false): void {

  let url = window.URL.createObjectURL(blob);
  if (isOpen) {
    window.open(url)
  } else {
    let a = document.createElement("a");
    document.body.appendChild(a);
    a.setAttribute("display", "none")
    a.href = url;
    a.download = fileName;
    a.click();
    a.remove();
    window.URL.revokeObjectURL(url);
  }
}

export function isNotLogin(): boolean {
  return getSessionVar("session_id") == null &&
    getSessionVar("username") == null
}
export function toFormData(data: any): FormData {
  const formData = new FormData()
  for (const key in data) {
    formData.append(key, data[key])
  }
  return formData
}

export default { resetArgs, saveBlob, toFormData, isNotLogin }