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/**  * Calculates a measure of sentiment for supplied ad text.  * See: https://developers.google.com/google-ads/scripts/docs/features/third-party-apis#refresh_token_grant  * for details on configuring this script.  *  * e.g:  *   initializeOAuthClient();  *   const sentiment = getAdTextSentiment('Buy our cakes today!');  *  * NOTE: This script also requires the OAuth2 library to be pasted at the end,  * as obtained from https://developers.google.com/google-ads/scripts/docs/examples/oauth20-library  */ // Service account email, e.g. '[email protected]' const SERVICE_ACCOUNT = 'INSERT_SERVICE_ACCOUNT_EMAIL_HERE'; // Key taken from downloaded JSON key file const KEY = '-----BEGIN ..... KEY-----\n';  let authUrlFetch;  // Call this function just once, to initialize the OAuth client. function initializeOAuthClient() {   if (typeof OAuth2 === 'undefined') {     const libUrl = 'https://developers.google.com/google-ads/scripts/docs/examples/oauth20-library';     throw Error('OAuth2 library not found. Please take a copy of the OAuth2 ' +         'library from ' + libUrl + ' and append to the bottom of this script.');   }   const tokenUrl = 'https://accounts.google.com/o/oauth2/token';   const scope = 'https://www.googleapis.com/auth/cloud-platform';   authUrlFetchApp =       OAuth2.withServiceAccount(tokenUrl, SERVICE_ACCOUNT, KEY, scope); }  /**  * Retrieve the sentiment for a given piece of text.  * @param {string} adText The text to analyze.  * @return {Object} The results of the analysis.  */ function getAdTextSentiment(adText) {   const body = {     document:{       type: 'PLAIN_TEXT',       content: adText     },     encodingType: 'UTF8'   };    // Natural Language API Sentiment URL   const url =       'https://language.googleapis.com/v1beta1/documents:analyzeSentiment';   const options = {     method: 'POST',     contentType: 'application/json',     payload: JSON.stringify(body)   };   const response = authUrlFetchApp.fetch(url, options);   const result = JSON.parse(response.getContentText());   if (result.documentSentiment) {     // return an object with 'polarity' and 'magnitude' properties.     return result.documentSentiment;   }   throw Error('No sentiment response returned'); }  // Paste in OAuth2 library here, from: // https://developers.google.com/google-ads/scripts/docs/examples/oauth20-library

/**  * Extracts entities for a piece of text.  * See: https://developers.google.com/google-ads/scripts/docs/features/third-party-apis#refresh_token_grant  * for details on configuring this script.  *  * e.g:  *   initializeOAuthClient();  *   const entities = getAdTextEntities('Football stadiums in London');  *  * NOTE: This script also requires the OAuth2 library to be pasted at the end,  * as obtained from https://developers.google.com/google-ads/scripts/docs/examples/oauth20-library  */ // Service account email, e.g. '[email protected]' const SERVICE_ACCOUNT = 'INSERT_SERVICE_ACCOUNT_EMAIL_HERE'; // Key taken from downloaded JSON key file const KEY = '-----BEGIN ..... KEY-----\n';  let authUrlFetch;  // Call this function just once, to initialize the OAuth client. function initializeOAuthClient() {   if (typeof OAuth2 === 'undefined') {     const libUrl = 'https://developers.google.com/google-ads/scripts/docs/examples/oauth20-library';     throw Error('OAuth2 library not found. Please take a copy of the OAuth2 ' +         'library from ' + libUrl + ' and append to the bottom of this script.');   }   const tokenUrl = 'https://accounts.google.com/o/oauth2/token';   const scope = 'https://www.googleapis.com/auth/cloud-platform';   authUrlFetchApp =       OAuth2.withServiceAccount(tokenUrl, SERVICE_ACCOUNT, KEY, scope); }  /**  * Extracts entities for a given piece of text.  * @param {string} adText The text to analyze.  * @return {Object} The list of extracted entities.  */ function getAdTextEntities(adText) {   const body = {     document:{       type: 'PLAIN_TEXT',       content: adText     },     encodingType: 'UTF8'   };    // Natural Language API Sentiment URL   const url =       'https://language.googleapis.com/v1beta1/documents:analyzeEntities';   const options = {     method: 'POST',     contentType: 'application/json',     payload: JSON.stringify(body)   };   const response = authUrlFetchApp.fetch(url, options);   const result = JSON.parse(response.getContentText());   console.log(result);   if (result.entities) {     // return a list of identified entities     return result.entities;   }   throw Error('No entities response returned'); }  // Paste in OAuth2 library here, from: // https://developers.google.com/google-ads/scripts/docs/examples/oauth20-library