export const formHeaderPost = (url, method, params, header) => {
  url = url + "?__random__=" + (new Date()).valueOf();
  let formdata = new URLSearchParams();
  Object.keys(params).map(key => {
    formdata.append(key, params[key]);
  });
  return fetch(url, {
    method, mode: "cors",
    headers: { "Content-Type": "application/x-www-form-urlencoded", ...header },
    body: formdata
  }).then(res => res.json());
};

export const postFetch = (url, params) => {
  url = url + "?__random__=" + (new Date()).valueOf();
  return fetch(url, {
    method: "POST",
    mode: "cors",
    headers: {
      "Content-Type": "application/json"
    },
    body: JSON.stringify(params)
  }).then(res => res.json());
};
export const headerRequestFetch = (url, method, params, header) => {
  url = url + "?__random__=" + (new Date()).valueOf();
  return fetch(url, {
    method, mode: "cors",
    headers: { "Content-Type": "application/json", ...header },
    body: JSON.stringify(params)
  }).then(res => res.json());
};
export const postExportFetch = (url, params) => {
  url = url + "?__random__=" + (new Date()).valueOf();
  return fetch(url, {
    method: "POST",
    mode: "cors",
    headers: {
      "Content-Type": "application/json"
    },
    body: JSON.stringify(params)
  }).then(res => {
    const filename = res.headers.get("Content-Disposition").split("filename=")[1];
    res.blob().then(blob => {
      const url = window.URL.createObjectURL(blob);
      const a = document.createElement("a");
      a.href = url;
      a.download = decodeURI(filename);
      a.click();
      window.URL.revokeObjectURL(url);
    });
  });
};