simpleTasks.gs

/**
 * Copyright Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * Special function that handles HTTP GET requests to the published web app.
 * @return {HtmlOutput} The HTML page to be served.
 */
function doGet() {
  return HtmlService.createTemplateFromFile('page').evaluate()
      .setTitle('Simple Tasks');
}

/**
 * Returns the ID and name of every task list in the user's account.
 * @return {Array.<Object>} The task list data.
 */
function getTaskLists() {
  var taskLists = Tasks.Tasklists.list().getItems();
  if (!taskLists) {
    return [];
  }
  return taskLists.map(function(taskList) {
    return {
      id: taskList.getId(),
      name: taskList.getTitle()
    };
  });
}

/**
 * Returns information about the tasks within a given task list.
 * @param {String} taskListId The ID of the task list.
 * @return {Array.<Object>} The task data.
 */
function getTasks(taskListId) {
  var tasks = Tasks.Tasks.list(taskListId).getItems();
  if (!tasks) {
    return [];
  }
  return tasks.map(function(task) {
    return {
      id: task.getId(),
      title: task.getTitle(),
      notes: task.getNotes(),
      completed: Boolean(task.getCompleted())
    };
  }).filter(function(task) {
    return task.title;
  });
}

/**
 * Sets the completed status of a given task.
 * @param {String} taskListId The ID of the task list.
 * @param {String} taskId The ID of the task.
 * @param {Boolean} completed True if the task should be marked as complete, false otherwise.
 */
function setCompleted(taskListId, taskId, completed) {
  var task = Tasks.newTask();
  if (completed) {
    task.setStatus('completed');
  } else {
    task.setStatus('needsAction');
    task.setCompleted(null);
  }
  Tasks.Tasks.patch(task, taskListId, taskId);
}

/**
 * Adds a new task to the task list.
 * @param {String} taskListId The ID of the task list.
 * @param {String} title The title of the new task.
 */
function addTask(taskListId, title) {
  var task = Tasks.newTask().setTitle(title);
  Tasks.Tasks.insert(task, taskListId);
}