Google Drive Activity Service

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/**
 * Lists 10 activity for a Drive user.
 * @see https://developers.google.com/drive/activity/v2/reference/rest/v2/activity/query
 */
function listDriveActivity() {
  const request = {
    pageSize: 10
    // Use other parameter here if needed.
  };
  try {
    // Activity.query method is used Query past activity in Google Drive.
    const response = DriveActivity.Activity.query(request);
    const activities = response.activities;
    if (!activities || activities.length === 0) {
      console.log('No activity.');
      return;
    }
    console.log('Recent activity:');
    for (const activity of activities) {
      // get time information of activity.
      const time = getTimeInfo(activity);
      // get the action details/information
      const action = getActionInfo(activity.primaryActionDetail);
      // get the actor's details of activity
      const actors = activity.actors.map(getActorInfo);
      // get target information of activity.
      const targets = activity.targets.map(getTargetInfo);
      // print the time,actor,action and targets of drive activity.
      console.log('%s: %s, %s, %s', time, actors, action, targets);
    }
  } catch (err) {
    // TODO (developer) - Handle error from drive activity API
    console.log('Failed with an error %s', err.message);
  }
}

/**
 * @param {object} object
 * @return {string}  Returns the name of a set property in an object, or else "unknown".
 */
function getOneOf(object) {
  for (const key in object) {
    return key;
  }
  return 'unknown';
}

/**
 * @param {object} activity Activity object.
 * @return {string} Returns a time associated with an activity.
 */
function getTimeInfo(activity) {
  if ('timestamp' in activity) {
    return activity.timestamp;
  }
  if ('timeRange' in activity) {
    return activity.timeRange.endTime;
  }
  return 'unknown';
}

/**
 * @param {object} actionDetail The primary action details of the activity.
 * @return {string} Returns the type of action.
 */
function getActionInfo(actionDetail) {
  return getOneOf(actionDetail);
}

/**
 * @param {object} user The User object.
 * @return {string}  Returns user information, or the type of user if not a known user.
 */
function getUserInfo(user) {
  if ('knownUser' in user) {
    const knownUser = user.knownUser;
    const isMe = knownUser.isCurrentUser || false;
    return isMe ? 'people/me' : knownUser.personName;
  }
  return getOneOf(user);
}

/**
 * @param {object} actor The Actor object.
 * @return {string} Returns actor information, or the type of actor if not a user.
 */
function getActorInfo(actor) {
  if ('user' in actor) {
    return getUserInfo(actor.user);
  }
  return getOneOf(actor);
}

/**
 * @param {object} target The Target object.
 * @return {string} Returns the type of a target and an associated title.
 */
function getTargetInfo(target) {
  if ('driveItem' in target) {
    const title = target.driveItem.title || 'unknown';
    return 'driveItem:"' + title + '"';
  }
  if ('drive' in target) {
    const title = target.drive.title || 'unknown';
    return 'drive:"' + title + '"';
  }
  if ('fileComment' in target) {
    const parent = target.fileComment.parent || {};
    const title = parent.title || 'unknown';
    return 'fileComment:"' + title + '"';
  }
  return getOneOf(target) + ':unknown';
}