import { ResponseHandler } from "./RepsonseHandler";

export interface DownloadMetadata {
  name?: string;
  type?: string;
}

const DownloadFileHandler: ResponseHandler<DownloadMetadata> = (res, next, extra) => {
  if (res.status === 404) {
    console.log("Nothing to download");
    return res.json().then(next);
  }
  return res.blob()
    .then(data => {
      let a = document.createElement("a");
      a.href = window.URL.createObjectURL(data);
      a.download = `${extra?.name || "file"}.${extra?.type || "txt"}`;
      a.click();
      next()
    })
    .catch(next);
}

export default DownloadFileHandler;