n8n/packages/nodes-base/nodes/PayPal/GenericFunctions.ts
2019-12-01 20:19:38 +01:00

131 lines
3.8 KiB
TypeScript

import { OptionsWithUri } from 'request';
import {
IExecuteFunctions,
IHookFunctions,
ILoadOptionsFunctions,
IExecuteSingleFunctions,
IWebhookFunctions,
BINARY_ENCODING
} from 'n8n-core';
import {
IDataObject,
} from 'n8n-workflow';
export async function payPalApiRequest(this: IHookFunctions | IExecuteFunctions | IExecuteSingleFunctions | ILoadOptionsFunctions | IWebhookFunctions, endpoint: string, method: string, body: any = {}, query?: IDataObject, uri?: string): Promise<any> { // tslint:disable-line:no-any
const credentials = this.getCredentials('payPalApi');
const env = getEnviroment(credentials!.env as string);
const tokenInfo = await getAccessToken.call(this);
const headerWithAuthentication = Object.assign({ },
{ Authorization: `Bearer ${tokenInfo.access_token}`, 'Content-Type': 'application/json' });
const options = {
headers: headerWithAuthentication,
method,
qs: query || {},
uri: uri || `${env}/v1${endpoint}`,
body,
json: true
};
try {
return await this.helpers.request!(options);
} catch (error) {
if (error.response.body) {
let errorMessage = error.response.body.message;
if (error.response.body.details) {
errorMessage += ` - Details: ${JSON.stringify(error.response.body.details)}`;
}
throw new Error(errorMessage);
}
throw error;
}
}
function getEnviroment(env: string): string {
// @ts-ignore
return {
'sanbox': 'https://api.sandbox.paypal.com',
'live': 'https://api.paypal.com',
}[env];
}
async function getAccessToken(this: IHookFunctions | IExecuteFunctions | IExecuteSingleFunctions | ILoadOptionsFunctions | IWebhookFunctions): Promise<any> { // tslint:disable-line:no-any
const credentials = this.getCredentials('payPalApi');
if (credentials === undefined) {
throw new Error('No credentials got returned!');
}
const env = getEnviroment(credentials!.env as string);
const data = Buffer.from(`${credentials!.clientId}:${credentials!.secret}`).toString(BINARY_ENCODING);
const headerWithAuthentication = Object.assign({},
{ Authorization: `Basic ${data}`, 'Content-Type': 'application/x-www-form-urlencoded' });
const options: OptionsWithUri = {
headers: headerWithAuthentication,
method: 'POST',
form: {
grant_type: 'client_credentials',
},
uri: `${env}/v1/oauth2/token`,
json: true
};
try {
return await this.helpers.request!(options);
} catch (error) {
const errorMessage = error.response.body.message || error.response.body.Message;
if (errorMessage !== undefined) {
throw new Error(errorMessage);
}
throw new Error(error.response.body);
}
}
/**
* Make an API request to paginated paypal endpoint
* and return all results
*/
export async function payPalApiRequestAllItems(this: IHookFunctions | IExecuteFunctions | IExecuteSingleFunctions | ILoadOptionsFunctions, propertyName: string, endpoint: string, method: string, body: any = {}, query?: IDataObject, uri?: string): Promise<any> { // tslint:disable-line:no-any
const returnData: IDataObject[] = [];
let responseData;
query!.page_size = 1000;
do {
responseData = await payPalApiRequest.call(this, endpoint, method, body, query, uri);
uri = getNext(responseData.links);
returnData.push.apply(returnData, responseData[propertyName]);
} while (
getNext(responseData.links) !== undefined
);
return returnData;
}
function getNext(links: IDataObject[]): string | undefined {
for (const link of links) {
if (link.rel === 'next') {
return link.href as string;
}
}
return undefined;
}
export function validateJSON(json: string | undefined): any { // tslint:disable-line:no-any
let result;
try {
result = JSON.parse(json!);
} catch (exception) {
result = '';
}
return result;
}
export function upperFist(s: string): string {
return s.split('.').map(e => {
return e.toLowerCase().charAt(0).toUpperCase() + e.toLowerCase().slice(1);
}).join(' ');
}