Method mkdir

pro/src/fsGoogleDrive.ts:423–483

* https://developers.google.com/drive/api/guides/folder

(
    key: string,
    mtime: number | undefined,
    ctime: number | undefined
  )

   * https://developers.google.com/drive/api/guides/folder
   */
  async mkdir(
    key: string,
    mtime: number | undefined,
    ctime: number | undefined
  ): Promise<Entity> {
    if (!key.endsWith("/")) {
      throw Error(`you should not mkdir on key=${key}`);
    }

    await this._init();

    // xxx/ => ["xxx"]
    // xxx/yyy/zzz/ => ["xxx", "xxx/yyy", "xxx/yyy/zzz"]
    const folderLevels = getFolderLevels(key);
    let parentFolderPath: string | undefined = undefined;
    let parentID: string | undefined = undefined;
    if (folderLevels.length === 0) {
      throw Error(`cannot getFolderLevels of ${key}`);
    } else if (folderLevels.length === 1) {
      parentID = this.baseDirID;
      parentFolderPath = ""; // ignore base dir
    } else {
      // length > 1
      parentFolderPath = `${folderLevels[folderLevels.length - 2]}/`;
      if (!(parentFolderPath in this.keyToGDEntity)) {
        throw Error(
          `parent of ${key}: ${parentFolderPath} is not created before??`
        );
      }
      parentID = this.keyToGDEntity[parentFolderPath].id;
    }

    // xxx/yyy/zzz/ => ["xxx", "xxx/yyy", "xxx/yyy/zzz"] => "xxx/yyy/zzz" => "zzz"
    let folderItselfWithoutSlash = folderLevels[folderLevels.length - 1];
    folderItselfWithoutSlash = folderItselfWithoutSlash.split("/").pop()!;

    const meta: any = {
      mimeType: FOLDER_MIME_TYPE,
      modifiedTime: unixTimeToStr(mtime, true),
      createdTime: unixTimeToStr(ctime, true),
      name: folderItselfWithoutSlash,
      parents: [parentID],
    };
    const res = await fetch("https://www.googleapis.com/drive/v3/files", {
      method: "POST",
      headers: {
        Authorization: `Bearer ${await this._getAccessToken()}`,
        "Content-Type": "application/json",
      },
      body: JSON.stringify(meta),
    });
    if (res.status !== 200 && res.status !== 201) {
      throw Error(`create folder ${key} failed! meta=${JSON.stringify(meta)}`);
    }
    const res2: File = await res.json();
    // console.debug(res2);
    const entity = fromFileToGDEntity(res2, parentID, parentFolderPath);
    // insert into cache