mirror of
https://github.com/n8n-io/n8n.git
synced 2024-09-21 15:27:32 -07:00
112 lines
2.5 KiB
TypeScript
112 lines
2.5 KiB
TypeScript
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import {
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OptionsWithUri,
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} from 'request';
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import {
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IExecuteFunctions,
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ILoadOptionsFunctions,
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} from 'n8n-core';
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import {
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IDataObject,
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} from 'n8n-workflow';
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import * as moment from 'moment-timezone';
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import * as jwt from 'jsonwebtoken';
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export async function googleApiRequest(
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this: IExecuteFunctions | ILoadOptionsFunctions,
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method: string,
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resource: string,
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body: IDataObject = {},
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qs: IDataObject = {},
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) {
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const authenticationMethod = this.getNodeParameter('authentication', 0, 'serviceAccount') as string;
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const options: OptionsWithUri & { headers: IDataObject } = {
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headers: {
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'Content-Type': 'application/json',
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},
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method,
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body,
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qs,
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uri: `https://slides.googleapis.com/v1${resource}`,
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json: true,
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};
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if (!Object.keys(body).length) {
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delete options.body;
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}
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if (!Object.keys(qs).length) {
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delete options.qs;
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}
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try {
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if (authenticationMethod === 'serviceAccount') {
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const credentials = this.getCredentials('googleApi') as { access_token: string, email: string, privateKey: string };
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const { access_token } = await getAccessToken.call(this, credentials);
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options.headers.Authorization = `Bearer ${access_token}`;
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return await this.helpers.request!(options);
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} else {
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return await this.helpers.requestOAuth2!.call(this, 'googleSlidesOAuth2Api', options);
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}
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} catch (error) {
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if (error?.response?.body?.message) {
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throw new Error(`Google Slides error response [${error.statusCode}]: ${error.response.body.message}`);
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}
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throw error;
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}
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}
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function getAccessToken(
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this: IExecuteFunctions | ILoadOptionsFunctions,
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{ email, privateKey }: { email: string, privateKey: string },
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) {
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// https://developers.google.com/identity/protocols/oauth2/service-account#httprest
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const scopes = [
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'https://www.googleapis.com/auth/drive.file',
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'https://www.googleapis.com/auth/presentations',
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];
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const now = moment().unix();
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const signature = jwt.sign(
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{
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iss: email,
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sub: email,
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scope: scopes.join(' '),
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aud: 'https://oauth2.googleapis.com/token',
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iat: now,
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exp: now + 3600,
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},
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privateKey,
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{
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algorithm: 'RS256',
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header: {
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kid: privateKey,
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typ: 'JWT',
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alg: 'RS256',
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},
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},
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);
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const options: OptionsWithUri = {
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headers: {
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'Content-Type': 'application/x-www-form-urlencoded',
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},
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method: 'POST',
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form: {
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grant_type: 'urn:ietf:params:oauth:grant-type:jwt-bearer',
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assertion: signature,
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},
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uri: 'https://oauth2.googleapis.com/token',
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json: true,
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};
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return this.helpers.request!(options);
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}
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