old_contents: /**
   * @license
   * Copyright Google Inc.
   *
   * 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.
   */
  // [START apps_script_execute]
  /**
   * Load the API and make an API call.  Display the results on the screen.
   */
  function callScriptFunction() {
    var scriptId = "<ENTER_YOUR_SCRIPT_ID_HERE>";
  
    // Call the Apps Script API run method
    //   'scriptId' is the URL parameter that states what script to run
    //   'resource' describes the run request body (with the function name
    //              to execute)
    gapi.client.script.scripts.run({
      'scriptId': scriptId,
      'resource': {
        'function': 'getFoldersUnderRoot'
      }
    }).then(function(resp) {
      var result = resp.result;
      if (result.error && result.error.status) {
        // The API encountered a problem before the script
        // started executing.
        appendPre('Error calling API:');
        appendPre(JSON.stringify(result, null, 2));
      } else if (result.error) {
        // The API executed, but the script returned an error.
  
        // Extract the first (and only) set of error details.
        // The values of this object are the script's 'errorMessage' and
        // 'errorType', and an array of stack trace elements.
        var error = result.error.details[0];
        appendPre('Script error message: ' + error.errorMessage);
  
        if (error.scriptStackTraceElements) {
          // There may not be a stacktrace if the script didn't start
          // executing.
          appendPre('Script error stacktrace:');
          for (var i = 0; i < error.scriptStackTraceElements.length; i++) {
            var trace = error.scriptStackTraceElements[i];
            appendPre('\t' + trace.function + ':' + trace.lineNumber);
          }
        }
      } else {
        // The structure of the result will depend upon what the Apps
        // Script function returns. Here, the function returns an Apps
        // Script Object with String keys and values, and so the result
        // is treated as a JavaScript object (folderSet).
  
        var folderSet = result.response.result;
        if (Object.keys(folderSet).length == 0) {
            appendPre('No folders returned!');
        } else {
          appendPre('Folders under your root folder:');
          Object.keys(folderSet).forEach(function(id){
            appendPre('\t' + folderSet[id] + ' (' + id  + ')');
          });
        }
      }
    });
  }
  // [END apps_script_execute]
  
new_contents: /**
   * @license
   * Copyright Google Inc.
   *
   * 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.
   */
  // [START apps_script_api_execute]
  /**
   * Load the API and make an API call.  Display the results on the screen.
   */
  function callScriptFunction() {
    var scriptId = "<ENTER_YOUR_SCRIPT_ID_HERE>";
  
    // Call the Apps Script API run method
    //   'scriptId' is the URL parameter that states what script to run
    //   'resource' describes the run request body (with the function name
    //              to execute)
    gapi.client.script.scripts.run({
      'scriptId': scriptId,
      'resource': {
        'function': 'getFoldersUnderRoot'
      }
    }).then(function(resp) {
      var result = resp.result;
      if (result.error && result.error.status) {
        // The API encountered a problem before the script
        // started executing.
        appendPre('Error calling API:');
        appendPre(JSON.stringify(result, null, 2));
      } else if (result.error) {
        // The API executed, but the script returned an error.
  
        // Extract the first (and only) set of error details.
        // The values of this object are the script's 'errorMessage' and
        // 'errorType', and an array of stack trace elements.
        var error = result.error.details[0];
        appendPre('Script error message: ' + error.errorMessage);
  
        if (error.scriptStackTraceElements) {
          // There may not be a stacktrace if the script didn't start
          // executing.
          appendPre('Script error stacktrace:');
          for (var i = 0; i < error.scriptStackTraceElements.length; i++) {
            var trace = error.scriptStackTraceElements[i];
            appendPre('\t' + trace.function + ':' + trace.lineNumber);
          }
        }
      } else {
        // The structure of the result will depend upon what the Apps
        // Script function returns. Here, the function returns an Apps
        // Script Object with String keys and values, and so the result
        // is treated as a JavaScript object (folderSet).
  
        var folderSet = result.response.result;
        if (Object.keys(folderSet).length == 0) {
            appendPre('No folders returned!');
        } else {
          appendPre('Folders under your root folder:');
          Object.keys(folderSet).forEach(function(id){
            appendPre('\t' + folderSet[id] + ' (' + id  + ')');
          });
        }
      }
    });
  }
  // [END apps_script_api_execute]
  
subject: Update index.js