refactor(core): Google service account remove duplicated functions (no-changelog) (#6368)

packages/nodes-base/nodes/Google/Books/GenericFunctions.ts

@@ -8,72 +8,12 @@ import type {
 	JsonObject,
 } from 'n8n-workflow';
 import { NodeApiError } from 'n8n-workflow';
-
-import moment from 'moment-timezone';
-
-import jwt from 'jsonwebtoken';
-
-interface IGoogleAuthCredentials {
-	delegatedEmail?: string;
-	email: string;
-	inpersonate: boolean;
-	privateKey: string;
-}
-
-async function getAccessToken(
-	this: IExecuteFunctions | IExecuteSingleFunctions | ILoadOptionsFunctions,
-	credentials: IGoogleAuthCredentials,
-): Promise<IDataObject> {
-	//https://developers.google.com/identity/protocols/oauth2/service-account#httprest
-
-	const scopes = ['https://www.googleapis.com/auth/books'];
-
-	const now = moment().unix();
-
-	credentials.email = credentials.email.trim();
-	const privateKey = credentials.privateKey.replace(/\\n/g, '\n').trim();
-
-	const signature = jwt.sign(
-		{
-			iss: credentials.email,
-			sub: credentials.delegatedEmail || credentials.email,
-			scope: scopes.join(' '),
-			aud: 'https://oauth2.googleapis.com/token',
-			iat: now,
-			exp: now + 3600,
-		},
-		privateKey,
-		{
-			algorithm: 'RS256',
-			header: {
-				kid: privateKey,
-				typ: 'JWT',
-				alg: 'RS256',
-			},
-		},
-	);
-
-	const options: OptionsWithUri = {
-		headers: {
-			'Content-Type': 'application/x-www-form-urlencoded',
-		},
-		method: 'POST',
-		form: {
-			grant_type: 'urn:ietf:params:oauth:grant-type:jwt-bearer',
-			assertion: signature,
-		},
-		uri: 'https://oauth2.googleapis.com/token',
-		json: true,
-	};
-
-	return this.helpers.request(options);
-}
+import { getGoogleAccessToken } from '../GenericFunctions';
 
 export async function googleApiRequest(
 	this: IExecuteFunctions | IExecuteSingleFunctions | ILoadOptionsFunctions,
 	method: string,
 	resource: string,
-
 	body: any = {},
 	qs: IDataObject = {},
 	uri?: string,
@@ -108,10 +48,7 @@ export async function googleApiRequest(
 				privateKey: string;
 			};
 
-			const { access_token } = await getAccessToken.call(
-				this,
-				credentials as unknown as IGoogleAuthCredentials,
-			);
+			const { access_token } = await getGoogleAccessToken.call(this, credentials, 'books');
 
 			options.headers!.Authorization = `Bearer ${access_token}`;