n8n/packages/nodes-base/nodes/Google/Drive/GenericFunctions.ts
Ricardo Espinoza 029b9738eb
Add Google Drive Trigger (#2219)
*  Google Drive Trigger

*  Small change

*  Small change

*  Improvements

*  Improvement

*  Improvements

*  Improvements

*  Improvements
2021-10-21 13:20:24 -05:00

146 lines
4 KiB
TypeScript

import {
OptionsWithUri,
} from 'request';
import {
IExecuteFunctions,
IExecuteSingleFunctions,
ILoadOptionsFunctions,
} from 'n8n-core';
import {
IDataObject,
IPollFunctions,
NodeApiError,
NodeOperationError,
} from 'n8n-workflow';
import * as moment from 'moment-timezone';
import * as jwt from 'jsonwebtoken';
export async function googleApiRequest(this: IExecuteFunctions | IExecuteSingleFunctions | ILoadOptionsFunctions | IPollFunctions, method: string, resource: string, body: any = {}, qs: IDataObject = {}, uri?: string, option: IDataObject = {}): Promise<any> { // tslint:disable-line:no-any
const authenticationMethod = this.getNodeParameter('authentication', 0, 'serviceAccount') as string;
let options: OptionsWithUri = {
headers: {
'Content-Type': 'application/json',
},
method,
body,
qs,
uri: uri || `https://www.googleapis.com${resource}`,
json: true,
};
options = Object.assign({}, options, option);
try {
if (Object.keys(body).length === 0) {
delete options.body;
}
if (authenticationMethod === 'serviceAccount') {
const credentials = await this.getCredentials('googleApi');
if (credentials === undefined) {
throw new NodeOperationError(this.getNode(), 'No credentials got returned!');
}
const { access_token } = await getAccessToken.call(this, credentials as IDataObject);
options.headers!.Authorization = `Bearer ${access_token}`;
return await this.helpers.request!(options);
} else {
//@ts-ignore
return await this.helpers.requestOAuth2.call(this, 'googleDriveOAuth2Api', options);
}
} catch (error) {
if (error.code === 'ERR_OSSL_PEM_NO_START_LINE') {
error.statusCode = '401';
}
throw new NodeApiError(this.getNode(), error);
}
}
export async function googleApiRequestAllItems(this: IExecuteFunctions | ILoadOptionsFunctions | IPollFunctions, propertyName: string, method: string, endpoint: string, body: any = {}, query: IDataObject = {}): Promise<any> { // tslint:disable-line:no-any
const returnData: IDataObject[] = [];
let responseData;
query.maxResults = query.maxResults || 100;
query.pageSize = query.pageSize || 100;
do {
responseData = await googleApiRequest.call(this, method, endpoint, body, query);
returnData.push.apply(returnData, responseData[propertyName]);
} while (
responseData['nextPageToken'] !== undefined &&
responseData['nextPageToken'] !== ''
);
return returnData;
}
function getAccessToken(this: IExecuteFunctions | IExecuteSingleFunctions | ILoadOptionsFunctions | IPollFunctions, credentials: IDataObject): Promise<IDataObject> {
//https://developers.google.com/identity/protocols/oauth2/service-account#httprest
const scopes = [
'https://www.googleapis.com/auth/drive',
'https://www.googleapis.com/auth/drive.appdata',
'https://www.googleapis.com/auth/drive.photos.readonly',
];
const now = moment().unix();
const signature = jwt.sign(
{
'iss': credentials.email as string,
'sub': credentials.delegatedEmail || credentials.email as string,
'scope': scopes.join(' '),
'aud': `https://oauth2.googleapis.com/token`,
'iat': now,
'exp': now + 3600,
},
credentials.privateKey as string,
{
algorithm: 'RS256',
header: {
'kid': credentials.privateKey as string,
'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);
}
export function extractId(url: string): string {
if (url.includes('/d/')) {
//https://docs.google.com/document/d/1TUJGUf5HUv9e6MJBzcOsPruxXDeGMnGYTBWfkMagcg4/edit
const data = url.match(/[-\w]{25,}/);
if (Array.isArray(data)) {
return data[0];
}
} else if (url.includes('/folders/')) {
//https://drive.google.com/drive/u/0/folders/19MqnruIXju5sAWYD3J71im1d2CBJkZzy
return url.split('/folders/')[1];
}
return url;
}