GoogleフォトからGoogleドライブへのデータ移動と複製：Google Apps Scriptを活用した手順

{
  "timeZone": "Asia/Tokyo",
  "dependencies": {
    "enabledAdvancedServices": [
      {
        "userSymbol": "Drive",
        "version": "v3",
        "serviceId": "drive"
      }
    ]
  },
  "exceptionLogging": "STACKDRIVER",
  "runtimeVersion": "V8",
  "oauthScopes": [
    "https://www.googleapis.com/auth/script.external_request",
    "https://www.googleapis.com/auth/photoslibrary.readonly",
    "https://www.googleapis.com/auth/drive.file"
  ]
}

const ALBUM_NAME = 'テストアルバム'; // アルバム名を定数として設定
const FOLDER_ID = '1YSzmJj-uBLAwDkh49NrphF3KMFawlwC3'; // フォルダIDを定数として設定

function copyPhotosToDrive() {
  const photoLibrary = getPhotoLibrary();
  const album = getAlbumByName(ALBUM_NAME, photoLibrary);
  if (!album) {
    Logger.log('アルバムが見つかりませんでした');
    return;
  }

  const photos = getPhotosFromAlbum(album.id);
  const folder = DriveApp.getFolderById(FOLDER_ID);

  photos.forEach(photo => {
    const fileName = `${ALBUM_NAME}_${photo.filename}`;
    if (!isFileExists(folder, fileName)) {
      const blob = getPhotoBlob(photo.baseUrl);
      const file = folder.createFile(blob);
      file.setName(fileName);
      Logger.log(`ファイル ${fileName} をコピーしました`);
    } else {
      Logger.log(`ファイル ${fileName} は既に存在します`);
    }
  });
}

function getPhotoLibrary() {
  const url = 'https://photoslibrary.googleapis.com/v1/albums';
  const response = UrlFetchApp.fetch(url, {
    headers: {
      Authorization: 'Bearer ' + ScriptApp.getOAuthToken()
    }
  });
  return JSON.parse(response.getContentText());
}

function getAlbumByName(name, photoLibrary) {
  return photoLibrary.albums.find(album => album.title === name);
}

function getPhotosFromAlbum(albumId) {
  const url = `https://photoslibrary.googleapis.com/v1/mediaItems:search`;
  const payload = JSON.stringify({ albumId: albumId });
  const options = {
    method: 'post',
    contentType: 'application/json',
    headers: {
      Authorization: 'Bearer ' + ScriptApp.getOAuthToken()
    },
    payload: payload
  };
  const response = UrlFetchApp.fetch(url, options);
  return JSON.parse(response.getContentText()).mediaItems;
}

function getPhotoBlob(baseUrl) {
  const url = baseUrl + '=d';
  return UrlFetchApp.fetch(url).getBlob();
}

function isFileExists(folder, fileName) {
  const files = folder.getFilesByName(fileName);
  return files.hasNext();
}