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Check for ads or keywords with broken URLs

  • Article

This solution shows how to check for ads or keywords with broken URLs. The script performs the check on all ads or keywords in the accounts that the user has access to. The following is the high-level flow of the script. For more details, read the inline comments.

  • Before running, set the NOTIFY and ENTITY_NAME variables. Set the NOTIFY variable to the list of email addresses you want the script's results sent to. And set the ENTITY_NAME variable to specify whether you want to check ads or keywords (the default is ads).
  • Reads a file from Google Drive. The file contains a list of objects. Each object contains an account ID and a time stamp of when the account was last checked for broken URLs. The first time the script runs the file shouldn't exist. If the file doesn't exist, the script builds the complete list of accounts that the user has access to. Note that the script won't pick up any new accounts that were added after the file was built. If accounts were added, you should delete the file, so it generates a new list of accounts.
  • Sorts the account list so the accounts that haven't been checked or are the oldest show up first.
  • Gets up to the first 50 account IDs from the list and calls the selector's executeInParallel method. The method executes in parallel the findBrokenUrls function for each account. This function returns an object that contains the account's information and the list of ads or keywords with broken URLS, if any.
  • Executes the reportResults function after all the findBrokenUrls function calls complete. This function creates a spreadsheet and uses Google Sheets to create a sheet for each account. If the account contains ads or keywords with broken URLS, it writes the entity to the sheet.
  • Uses Google Mail to send an email notification to the specified recipients. The email indicates if an account contains broken URLs and provides a link to the sheet where they can see the details.
  • Updates the lastChecked field for each account and saves the file. The next time the script runs, it sorts the list of accounts by the lastChecked time stamp. This means that all accounts that haven't been processed or are the oldest will be first in the list. This script will need to run one or more times depending on the number of accounts you have.

Before using this example, see Authenticating with Google services for options on getting an access token to use in this solution.

Note

Replace the main function and everything inside the code editor with this example script.

// Add a comma-delimited list of email addresses that should receive the 
// notification email
const NOTIFY = ['someone@example.com'];

// Set this value to 'Ad' to check ad URLs or 'Keyword' to check keyword URLs
const ENTITY_NAME = 'Ad'; // Valid values: 'Ad', 'Keyword'

const SCRIPT_NAME = `Microsoft Advertising - ${ENTITY_NAME} URL Checker`;
const ACCOUNTS_FILE_NAME = `MicrosoftAds-Scripts-Broken${ENTITY_NAME}Urls-AccountList.json`;
const SPREADSHEET_PREFIX = `MicrosoftAds-Scripts-Broken${ENTITY_NAME}Urls`;
const ACCOUNT_BATCH_SIZE = 50;

// Set this value to true to get an email even if no broken URLs were found
const SEND_EMAIL_EVEN_IF_NO_BROKEN_URLS_FOUND = false;

// Set this value to true to include inactive entities in the check
const INCLUDE_INACTIVE_ENTITIES = false;

// Add custom response checks to this function if needed
const checkResponse = function (url, response, entity) {
/*
  var responseText = response.getContentText();

  if (responseText.includes('out of stock')) {
    return { isGood: false, error: 'Received out of stock response' };
  }
*/
  return { isGood: true };
}

// See this page to get Google credentials: https://zcusa.951200.xyz/advertising/scripts/examples/authenticating-with-google-services
// If you chose option 1 in Getting an access token, set accessToken to 
// the token you received from Google OAuth playground. Otherwise, if you
// chose option 2, set clientId, clientSecret, and refreshToken.

const credentials = {
  accessToken: '',
  clientId: '',
  clientSecret: '',
  refreshToken: ''
};

function main() {
  const remainingQuota = UrlFetchApp.getRemainingDailyQuota();

  if (remainingQuota < 50) {
    Logger.log(`Remaining URL fetch quota ${remainingQuota} is not enough to run this script now`);

    return;
  }

  // If it's the first time the script has run, the function creates
  // the JSON file. The file contains a list of JSON objects.
  // Each object contains an account ID field (id) and a time
  // stamp field (lastChecked) when the account was last checked
  // for broken URLs.

  createFileIfNotExists(ACCOUNTS_FILE_NAME, false);

  // Load the list of objects from the JSON file, or if the file is empty,
  // set the list to empty.

  const accountsList = loadObject(ACCOUNTS_FILE_NAME) || [];

  // If the JSON file is empty, get a list of accounts the user
  // has access to. For each account, create an object that contains
  // the id field and lastChecked field. Then add it to accountsList.

  // Note that if the file exists, accountsList will not include  
  // new accounts that were added since the script last ran. To ensure
  // that the list contains all accounts, consider deleting the file
  // periodically or after you add an account.

  if (accountsList.length === 0) {
    const accounts = AccountsApp.accounts().get();

    while (accounts.hasNext()) {
      const account = accounts.next();

      accountsList.push({
        id: account.getAccountId(),
        lastChecked: '',
        lastCheckedId: '0'
      });
    }
  }

  // Sort the list by lastChecked. This ensures that unprocessed accounts 
  // (i.e., lastChecked: '') in accountsList are first in the list. If all 
  // accounts have been processed, the accounts with the oldest lastChecked 
  // time stamp are first.

  accountsList.sort((a, b) => a.lastChecked.localeCompare(b.lastChecked));

  // Save the list of JSON objects back to the file. The file is opened
  // again in reportResults() to update the lastChecked field with
  // the time stamp of when the account was processed.

  saveObject(accountsList, ACCOUNTS_FILE_NAME);

  // Get a maximum of the first 50 accounts (ACCOUNT_BATCH_SIZE) from accountsList.
  // Each time the script runs, it grabs the next 50 accounts until eventually
  // the script processes all the accounts.

  const accountsToCheck = accountsList.slice(0, ACCOUNT_BATCH_SIZE);

  const accountIds = accountsToCheck.map(x => x.id);

  Logger.log('Checking the following accounts: ' + JSON.stringify(accountIds));

  // Use the executeInParallel method to execute the findBrokenUrls function
  // for all 50 accounts in parallel. When findBrokenUrls finishes with all
  // 50 accounts, Scripts calls the reportResults function. 

  AccountsApp.accounts().withIds(accountIds).executeInParallel('findBrokenUrls', 'reportResults', JSON.stringify(accountsToCheck));
}

const URL_FETCH_QUOTA_EXCEEDED = 'URL fetch quota exceeded';

// The script executes this function in parallel for each account that the 
// BingAdsAccountSelector returns (see the executeInParallel call in main()).
// Each account in the selector becomes the current account for each instance
// of findBrokenUrls().

function findBrokenUrls(accountsToCheckJson) {
  const currentAccount = AdsApp.currentAccount();

  const currentAccountInfo = `${currentAccount.getName()} ${currentAccount.getAccountId()} (${currentAccount.getAccountNumber()})`;

  Logger.log(`Processing account: ${currentAccountInfo}`);

  const results = [];

  // Contains a list of entity fields.
  let columns;

  let entityName = ENTITY_NAME;

  switch (entityName) {
    case 'Keyword':
      columns = [
        { name: 'Campaign', func: keyword => keyword.getCampaign().getName() },
        { name: 'Campaign Id', func: keyword => keyword.getCampaign().getId() },
        { name: 'AdGroup', func: keyword => keyword.getAdGroup().getName() },
        { name: 'AdGroup Id', func: keyword => keyword.getAdGroup().getId() },
        { name: 'Keyword', func: keyword => keyword.getText() },
        { name: 'Keyword Id', func: keyword => keyword.getId() },
        { name: 'Match Type', func: keyword => keyword.getMatchType() },
        { name: 'Final Url', func: keyword => keyword.urls().getFinalUrl() },
        { name: 'HTTP code', func: keyword => keyword['checkResult'].code },
        { name: 'Error', func: keyword => keyword['checkResult'].error }
      ];
      break;
    case 'Ad':
      columns = [
        { name: 'Campaign', func: ad => ad.getCampaign().getName() },
        { name: 'Campaign Id', func: ad => ad.getCampaign().getId() },
        { name: 'AdGroup', func: ad => ad.getAdGroup().getName() },
        { name: 'AdGroup Id', func: ad => ad.getAdGroup().getId() },
        { name: 'Id', func: ad => ad.getId() },
        { name: 'Type', func: ad => ad.getType() },
        { name: 'Title', func: ad => ad.getHeadline() },
        { name: 'Title 1', func: ad => ad.isType().expandedTextAd() ? ad.asType().expandedTextAd().getHeadlinePart1() : null },
        { name: 'Title 2', func: ad => ad.isType().expandedTextAd() ? ad.asType().expandedTextAd().getHeadlinePart2() : null },
        { name: 'Text', func: ad => ad.getDescription() },
        { name: 'Display Url', func: ad => ad.getDisplayUrl() },
        { name: 'Destination Url', func: ad => ad.getDestinationUrl() },
        { name: 'Final Url', func: ad => ad.urls().getFinalUrl() },
        { name: 'Path 1', func: ad => ad.isType().expandedTextAd() ? ad.asType().expandedTextAd().getPath1() : null },
        { name: 'Path 2', func: ad => ad.isType().expandedTextAd() ? ad.asType().expandedTextAd().getPath2() : null },
        { name: 'HTTP code', func: ad => ad['checkResult'].code },
        { name: 'Error', func: ad => ad['checkResult'].error }
      ];
      break;
  }

  let executionInfo = AdsApp.getExecutionInfo();

  let allEntitiesChecked = false;

  let checkedEntitiesCount = 0;

  let lastCheckedId = JSON.parse(accountsToCheckJson).filter(x => x.id == currentAccount.getAccountId())[0].lastCheckedId;

  while (true) {
    let entitySelector;

    switch (entityName) {
      case 'Keyword':
        entitySelector = AdsApp.keywords();
        break;
      case 'Ad':
        entitySelector = AdsApp.ads();
        break;
    }

    entitySelector = entitySelector
      .withCondition(`Id > ${lastCheckedId}`);

    if (!INCLUDE_INACTIVE_ENTITIES) {
      entitySelector = entitySelector
        .withCondition('CampaignStatus = ENABLED')
        .withCondition('AdGroupStatus = ENABLED')
        .withCondition('Status = ENABLED');
    }

    const notCheckedEntities = entitySelector.orderBy('Id ASC').get();

    allEntitiesChecked = notCheckedEntities.totalNumEntities() == 0;

    if (allEntitiesChecked) {
      Logger.log(`All ${ENTITY_NAME}s have been checked for account ${currentAccountInfo}`);

      lastCheckedId = '0';

      break;
    } else {
      Logger.log(`Checking up to ${notCheckedEntities.totalNumEntities()} ${ENTITY_NAME}s for account ${currentAccountInfo}`);

      let processedEntitiesCountInBatch = 0;

      let timeLimitReached = false;

      let urlFetchLimitReached = false;

      while (notCheckedEntities.hasNext()) {
        const entity = notCheckedEntities.next();

        processedEntitiesCountInBatch++;

        // Make sure the script has time to finish processing 
        // the entity, so the script ends cleanly
        if (executionInfo.getRemainingTime() < 180) {
          timeLimitReached = true;

          break;
        }

        let url = entity.urls().getFinalUrl();

        if (!url && entityName == 'Ad') {
          url = entity.getDestinationUrl();
        }

        if (url) {
          try {
            const urlCheckResult = checkUrlWithCache(url, entity);

            if (!urlCheckResult.isGood) {
              entity['checkResult'] = urlCheckResult;

              const entityResult = columns.reduce((temp, column) => { temp[column.name] = column.func(entity); return temp }, {});

              results.push(entityResult);
            }
          } catch (e) {
            if (e == URL_FETCH_QUOTA_EXCEEDED) {
              urlFetchLimitReached = true;

              break;
            }

            throw e;
          }
        }

        lastCheckedId = entity.getId();

        checkedEntitiesCount++;
      }

      if (processedEntitiesCountInBatch == 0) {
        Logger.log(`Stopping processing for account ${currentAccountInfo} since entity limit has been reached`);

        break;
      }

      if (timeLimitReached) {
        Logger.log(`Stopping processing for account ${currentAccountInfo} since time limit has been reached`);

        break;
      }

      if (urlFetchLimitReached) {
        Logger.log(`Stopping processing for account ${currentAccountInfo} since URL fetch limit has been reached`);

        break;
      }
    }

    Logger.log(`Found ${results.length} broken ${ENTITY_NAME}(s) for account ${currentAccountInfo}`);
  }

  // Create an object that identifies the account and its
  // list of entities with a broken URL, if any. Convert it to a string that's 
  // past to the reportResults function when all instances of
  // this function finish.

  return JSON.stringify({
    customerId: currentAccount.getCustomerId(),
    accountId: currentAccount.getAccountId(),
    accountNumber: currentAccount.getAccountNumber(),
    accountName: currentAccount.getName(),
    brokenEntitiesCount: results.length,
    brokenEntities: { rows: results, headers: columns.map(x => x.name) },
    allEntitiesChecked: allEntitiesChecked,
    checkedEntitiesCount: checkedEntitiesCount,
    lastCheckedId: lastCheckedId
  });
}

let urlCheckCache = {};

function checkUrlWithCache(url, entity) {
  const cachedResult = urlCheckCache[url];

  if (cachedResult) {
    return cachedResult;
  }

  const checkResult = checkUrl(url, entity);

  urlCheckCache[url] = checkResult;

  return checkResult;
}

function checkUrl(url, entity) {
  const remainingQuota = UrlFetchApp.getRemainingDailyQuota();

  // Make sure the script has enough calls left in its quota to
  // finish processing the entity, so the script ends cleanly  
  if (remainingQuota < 30) {
    throw URL_FETCH_QUOTA_EXCEEDED;
  }

  let response;

  try {
    response = UrlFetchApp.fetch(url, { muteHttpExceptions: true, headers: { 'User-Agent': 'Mozilla/5.0 (compatible; Microsoft-Ads-Url-Checker)' } });
  } catch (e) {
    return { isGood: false, error: e.message };
  }

  const code = response.getResponseCode();

  if (code >= 200 && code <= 299) {
    return checkResponse(url, response, entity);
  }

  return { isGood: false, code: code };
}

// Scripts calls this function for each account when findBrokenUrls
// finishes processing all accounts.
// This function creates a spreadsheet that contains a sheet for each
// account. It then sends an email notification to the list of 
// recipients in 'NOTIFY'.

function reportResults(results) {
  Logger.log('Reporting results');

  const sheetResults = [];

  // Create a sheet object for each account in the list of results.
  for (const result of results) {
    if (!result.getReturnValue()) {
      Logger.log(`Got an error in result: ${result.getError()}`);

      continue;
    }

    const accountResult = JSON.parse(result.getReturnValue());

    const sheetName = `${accountResult.accountId} (${accountResult.accountNumber})`;

    sheetResults.push({ accountResult: accountResult, sheetName: sheetName });
  }

  // Gets a time stamp. The .replace function removes the u2003 character that 
  // toLocaleString() adds to the date string.

  const dateTimeStr = new Date().toISOString().replace(/\u200e/g, '');

  // Create the spreadsheet file.

  const spreadsheetName = `${SPREADSHEET_PREFIX} ${dateTimeStr}`;

  const spreadsheetId = createFileIfNotExists(spreadsheetName, true);

  // Adds a sheet for each account to the spreadsheet.

  const createSheetsResponse = createSheets(spreadsheetId, sheetResults.map(x => x.sheetName));

  // Get the original accounts list, so the script can
  // update the lastChecked time stamp.

  const accountsList = loadObject(ACCOUNTS_FILE_NAME);

  const accountsById = accountsList.reduce((map, acc) => (map[acc.id] = acc, map), {});

  const sheetsByName = createSheetsResponse.updatedSpreadsheet.sheets.reduce((map, sheet) => (map[sheet.properties.title] = sheet, map), {});

  const spreadsheetRows = [];

  const summaryEmailData = [];

  // Builds the sheet information.

  for (const sheetResult of sheetResults) {
    const accountResult = sheetResult.accountResult;

    const sheetRows = [accountResult.brokenEntities.headers];

    for (const row of accountResult.brokenEntities.rows) {
      const rowValues = accountResult.brokenEntities.headers.map(x => row[x]);

      sheetRows.push(rowValues);
    }

    const sheetId = sheetsByName[sheetResult.sheetName].properties.sheetId;

    spreadsheetRows.push({ sheetId: sheetId, rows: sheetRows });

    summaryEmailData.push({
      customerId: accountResult.customerId,
      accountId: accountResult.accountId,
      accountNumber: accountResult.accountNumber,
      accountName: accountResult.accountName,
      brokenEntitiesCount: accountResult.brokenEntitiesCount,
      checkedEntitiesCount: accountResult.checkedEntitiesCount,
      sheetId: sheetId
    });

    accountsById[accountResult.accountId].lastCheckedId = accountResult.lastCheckedId;

    if (accountResult.allEntitiesChecked) {
      accountsById[accountResult.accountId].lastChecked = dateTimeStr;
    }
  }

  writeRowsToSpreadsheet(spreadsheetRows, spreadsheetId);

  sendSummaryEmailIfNeeded(summaryEmailData, spreadsheetId);

  saveObject(accountsList, ACCOUNTS_FILE_NAME);
}

// Send an email to recipients with a list of the accounts and any
// entities with a broken URL. The recipient can click the embedded 
// link to access the spreadsheet that contains details about
// the entities.

function sendSummaryEmailIfNeeded(summaryEmailData, spreadsheetId) {
  if (summaryEmailData.length == 0) {
    return;
  }

  let totalbrokenEntitiesCount = summaryEmailData.reduce((sum, accountData) => sum + accountData.brokenEntitiesCount, 0);

  if (totalbrokenEntitiesCount == 0 && !SEND_EMAIL_EVEN_IF_NO_BROKEN_URLS_FOUND) {
    Logger.log("Skipping email notification since no broken urls were found");

    return;
  }

  const subject = `${SCRIPT_NAME} Summary - Found ${totalbrokenEntitiesCount} ${ENTITY_NAME}(s)`;

  // Gets a link to the file to include in the email notification.

  const fileUrl = shareFileWithLink(spreadsheetId);

  const messageHtml =
    `<html>
    <body>
    ${subject}
    <br/ ><br/ >
    <table border="1" width="95%" style="border-collapse:collapse;">
        <tr>
            <th align="left">Customer Id</th>
            <th align="left">Account Id</th>
            <th align="left">Account Number</th>
            <th align="left">Account Name</th>
            <th align="center">${ENTITY_NAME}s With Broken URL Found</th>            
            <th align="center">Full Report</th>
            <th align="center">Total ${ENTITY_NAME}s Checked</th>
        </tr>
        ${summaryEmailData.map(row =>
      `<tr>
            <td align="left">${row.customerId}</td>
            <td align="left">${row.accountId}</td>
            <td align="left">${row.accountNumber}</td>
            <td align="left">${row.accountName}</td>
            <td align="center">${row.brokenEntitiesCount}</td>            
            <td align="center"><a href="${fileUrl}#gid=${row.sheetId}">Show Details</a></td>
            <td align="center">${row.checkedEntitiesCount}</td>
        </tr>`).join('')}
    </table>
    <br/ >
    ${new Date().toUTCString()}. Completed. ${summaryEmailData.length} accounts checked.        
    </body>
</html>`;

  for (const i in NOTIFY) {
    const email =
      `To: ${NOTIFY[i]}
Subject: ${subject}
Content-Type: text/html; charset="utf-8"

${messageHtml}`;

    getGmailApi().users.messages.send({ userId: 'me' }, { raw: Base64.encode(email) });
  }
}

// Calls to get Google services.

const getSheetsApi = (() => {
  let sheetsApi;
  return () => sheetsApi || (sheetsApi = GoogleApis.createSheetsService(credentials));
})();

const getDriveApi = (() => {
  let driveApi;
  return () => driveApi || (driveApi = GoogleApis.createDriveService(credentials));
})();

const getGmailApi = (() => {
  let gmailApi;
  return () => gmailApi || (gmailApi = GoogleApis.createGmailService(credentials));
})();

// Creates each sheet in the spreadsheet.

function createSheets(spreadsheetId, sheetNames) {
  const requests = sheetNames.map(x => ({ addSheet: { properties: { title: x } } }));

  const response = getSheetsApi().spreadsheets.batchUpdate({ spreadsheetId: spreadsheetId }, {
    requests: requests,
    includeSpreadsheetInResponse: true
  }).result;

  return response;
}

// Writes the entities and broken URLs to each sheet.

function writeRowsToSpreadsheet(spreadsheetRows, spreadsheetId) {
  const requests = spreadsheetRows.map(sheetRows => ({
    appendCells: {
      sheetId: sheetRows.sheetId,
      rows: sheetRows.rows.map(row => ({
        values: row.map(columnValue => ({
          userEnteredValue: { stringValue: columnValue ? columnValue.toString() : columnValue }
        }))
      })),
      fields: '*'
    }
  }));

  getSheetsApi().spreadsheets.batchUpdate({ spreadsheetId: spreadsheetId }, {
    requests: requests,
    includeSpreadsheetInResponse: false
  });
}

// Returns a link to the spreadsheet. The script includes 
// the link in the email notification.

function shareFileWithLink(fileId) {
  // Set up permissions, so the recipient doesn't have to
  // sign in.

  getDriveApi().permissions.create({ fileId: fileId }, {
    type: 'anyone',
    role: 'reader',
    allowFileDiscovery: false
  });

  const fileResponse = getDriveApi().files.get({ fileId: fileId, fields: 'webViewLink' }).result;

  return fileResponse.webViewLink;
}

function findFileId(fileName) {
  const req = escape(`name = '${fileName}'`);

  const searchResult = getDriveApi().files.list({ q: req }).result;

  if (searchResult.files.length > 0) {
    return searchResult.files[0].id;
  }

  return null;
}

function createFileIfNotExists(fileName, isSpreadsheet) {
  const existingFileId = findFileId(fileName);

  if (existingFileId) {
    return existingFileId;
  }

  const createResult = getDriveApi().files.create({}, {
    name: fileName,
    mimeType: isSpreadsheet ? 'application/vnd.google-apps.spreadsheet' : 'application/vnd.google-apps.document'
  }).result;

  return createResult.id;
}

function saveObject(obj, fileName) {
  const fileId = createFileIfNotExists(fileName, false);

  getDriveApi().files.update({ fileId: fileId }, JSON.stringify(obj), { uploadType: 'simple', contentType: 'text/plain' });
}

function loadObject(fileName) {
  const fileId = findFileId(fileName);

  if (!fileId) {
    throw new Error(`File ${fileName} not found`);
  }

  const fileData = getDriveApi().files.export({ fileId: fileId, mimeType: 'text/plain' }).body.trim();

  if (fileData) {
    return JSON.parse(fileData.trim());
  } else {
    return null;
  }
}

// Common Google library code that all Scripts that access Google
// services will include.

var GoogleApis;
(function (GoogleApis) {
  GoogleApis.createSheetsService = credentials => createService("https://sheets.googleapis.com/$discovery/rest?version=v4", credentials);
  GoogleApis.createDriveService = credentials => createService("https://www.googleapis.com/discovery/v1/apis/drive/v3/rest", credentials);
  GoogleApis.createGmailService = credentials => createService("https://www.googleapis.com/discovery/v1/apis/gmail/v1/rest", credentials);

  // Creation logic based on https://developers.google.com/discovery/v1/using#usage-simple
  function createService(url, credentials) {
    const content = UrlFetchApp.fetch(url).getContentText();
    const discovery = JSON.parse(content);
    const accessToken = getAccessToken(credentials);
    const standardParameters = discovery.parameters;
    const service = build(discovery, {}, discovery['rootUrl'], discovery['servicePath'], standardParameters, accessToken);
    return service;
  }

  function createNewMethod(method, rootUrl, servicePath, standardParameters, accessToken) {
    return (urlParams, body, uploadParams) => {
      let urlPath = method.path;
      if (uploadParams) {
        if (!method.supportsMediaUpload) {
          throw new Error(`Media upload is not supported`);
        }
        const uploadProtocols = method.mediaUpload.protocols;
        const uploadType = uploadParams.uploadType;
        switch (uploadType) {
          case 'simple':
            const simpleProtocol = uploadProtocols.simple;
            if (!simpleProtocol) {
              throw new Error(`Upload protocol ${uploadType} is not supported`);
            }
            urlPath = simpleProtocol.path;
            break;
          case 'resumable':
            const resumableProtocol = uploadProtocols.resumable;
            if (!resumableProtocol) {
              throw new Error(`Upload protocol ${uploadType} is not supported`);
            }
            urlPath = resumableProtocol.path;
            break;
          default:
            throw new Error(`Unknown upload type ${uploadType}`);
        }
      }
      const queryArguments = [];
      for (const name in urlParams) {
        const paramConfg = method.parameters[name] || standardParameters[name];
        if (!paramConfg) {
          throw new Error(`Unexpected url parameter ${name}`);
        }
        switch (paramConfg.location) {
          case 'path':
            urlPath = urlPath.replace('{' + name + '}', urlParams[name]);
            break;
          case 'query':
            queryArguments.push(`${name}=${urlParams[name]}`);
            break;
          default:
            throw new Error(`Unknown location ${paramConfg.location} for url parameter ${name}`);
        }
      }
      if (uploadParams) {
        queryArguments.push(`uploadType=${uploadParams.uploadType === 'simple' ? 'media' : uploadParams.uploadType}`);
      }
      let url = rootUrl;
      if (urlPath.startsWith('/')) {
        url += urlPath.substring(1);
      } else {
        url += servicePath + urlPath;
      }
      if (queryArguments.length > 0) {
        url += '?' + queryArguments.join('&');
      }
      const payload = uploadParams ? body : JSON.stringify(body);
      const contentType = uploadParams ? uploadParams.contentType : 'application/json';
      const fetchParams = { contentType: contentType, method: method.httpMethod, payload: payload, headers: { Authorization: `Bearer ${accessToken}` }, muteHttpExceptions: true };
      const httpResponse = UrlFetchApp.fetch(url, fetchParams);
      const responseContent = httpResponse.getContentText();
      const responseCode = httpResponse.getResponseCode();
      let parsedResult;
      try {
        parsedResult = JSON.parse(responseContent);
      } catch (e) {
        parsedResult = false;
      }
      const response = new Response(parsedResult, responseContent, responseCode);
      if (responseCode >= 200 && responseCode <= 299) {
        return response;
      }
      throw new Error(response.toString());
    }
  }

  function Response(result, body, status) {
    this.result = result;
    this.body = body;
    this.status = status;
  }
  Response.prototype.toString = function () {
    return this.body;
  }

  function build(discovery, collection, rootUrl, servicePath, standardParameters, accessToken) {
    for (const name in discovery.resources) {
      const resource = discovery.resources[name];
      collection[name] = build(resource, {}, rootUrl, servicePath, standardParameters, accessToken);
    }
    for (const name in discovery.methods) {
      const method = discovery.methods[name];
      collection[name] = createNewMethod(method, rootUrl, servicePath, standardParameters, accessToken);
    }
    return collection;
  }

  function getAccessToken(credentials) {
    if (credentials.accessToken) {
      return credentials.accessToken;
    }
    const tokenResponse = UrlFetchApp.fetch('https://www.googleapis.com/oauth2/v4/token', { method: 'post', contentType: 'application/x-www-form-urlencoded', muteHttpExceptions: true, payload: { client_id: credentials.clientId, client_secret: credentials.clientSecret, refresh_token: credentials.refreshToken, grant_type: 'refresh_token' } });
    const responseCode = tokenResponse.getResponseCode();
    const responseText = tokenResponse.getContentText();
    if (responseCode >= 200 && responseCode <= 299) {
      const accessToken = JSON.parse(responseText)['access_token'];
      return accessToken;
    }
    throw new Error(responseText);
  }
})(GoogleApis || (GoogleApis = {}));

// https://github.com/AzureAD/microsoft-authentication-library-for-js/blob/master/lib/msal-core/src/Utils.ts
class Base64 {
  static encode(input) {
    const keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
    let output = "";
    let chr1, chr2, chr3, enc1, enc2, enc3, enc4;
    let i = 0;
    input = this.utf8Encode(input);
    while (i < input.length) {
      chr1 = input.charCodeAt(i++);
      chr2 = input.charCodeAt(i++);
      chr3 = input.charCodeAt(i++);
      enc1 = chr1 >> 2;
      enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
      enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
      enc4 = chr3 & 63;
      if (isNaN(chr2)) {
        enc3 = enc4 = 64;
      }
      else if (isNaN(chr3)) {
        enc4 = 64;
      }
      output = output + keyStr.charAt(enc1) + keyStr.charAt(enc2) + keyStr.charAt(enc3) + keyStr.charAt(enc4);
    }
    return output.replace(/\+/g, "-").replace(/\//g, "_").replace(/=+$/, "");
  }
  static utf8Encode(input) {
    input = input.replace(/\r\n/g, "\n");
    let utftext = "";
    for (let n = 0; n < input.length; n++) {
      const c = input.charCodeAt(n);
      if (c < 128) {
        utftext += String.fromCharCode(c);
      }
      else if ((c > 127) && (c < 2048)) {
        utftext += String.fromCharCode((c >> 6) | 192);
        utftext += String.fromCharCode((c & 63) | 128);
      }
      else {
        utftext += String.fromCharCode((c >> 12) | 224);
        utftext += String.fromCharCode(((c >> 6) & 63) | 128);
        utftext += String.fromCharCode((c & 63) | 128);
      }
    }
    return utftext;
  }
}