Method writeFile

pro/src/fsGoogleDrive.ts:489–661

* https://developers.google.com/drive/api/guides/manage-uploads * https://stackoverflow.com/questions/65181932/how-i-can-upload-file-to-google-drive-with-google-drive-api

(
    key: string,
    content: ArrayBuffer,
    mtime: number,
    ctime: number
  )

   * https://stackoverflow.com/questions/65181932/how-i-can-upload-file-to-google-drive-with-google-drive-api
   */
  async writeFile(
    key: string,
    content: ArrayBuffer,
    mtime: number,
    ctime: number
  ): Promise<Entity> {
    if (key.endsWith("/")) {
      throw Error(`should not call writeFile on ${key}`);
    }

    await this._init();

    const contentType =
      mime.contentType(mime.lookup(key) || DEFAULT_CONTENT_TYPE) ||
      DEFAULT_CONTENT_TYPE;

    let parentID: string | undefined = undefined;
    let parentFolderPath: string | undefined = undefined;

    // "xxx" => []
    // "xxx/yyy/zzz.md" => ["xxx", "xxx/yyy"]
    const folderLevels = getFolderLevels(key);
    if (folderLevels.length === 0) {
      // root
      parentID = this.baseDirID;
      parentFolderPath = "";
    } else {
      parentFolderPath = `${folderLevels[folderLevels.length - 1]}/`;
      if (!(parentFolderPath in this.keyToGDEntity)) {
        throw Error(
          `parent of ${key}: ${parentFolderPath} is not created before??`
        );
      }
      parentID = this.keyToGDEntity[parentFolderPath].id;
    }

    const fileItself = key.split("/").pop()!;

    if (content.byteLength <= 5 * 1024 * 1024) {
      const formData = new FormData();
      const meta: any = {
        name: fileItself,
        modifiedTime: unixTimeToStr(mtime, true),
        createdTime: unixTimeToStr(ctime, true),
        parents: [parentID],
      };
      formData.append(
        "metadata",
        new Blob([JSON.stringify(meta)], {
          type: "application/json; charset=UTF-8",
        })
      );
      formData.append("media", new Blob([content], { type: contentType }));

      const res = await fetch(
        "https://www.googleapis.com/upload/drive/v3/files?uploadType=multipart&fields=kind,fileExtension,md5Checksum,mimeType,parents,size,spaces,id,name,trashed,createdTime,modifiedTime,quotaBytesUsed,originalFilename,fullFileExtension,sha1Checksum,sha256Checksum",
        {
          method: "POST",