first commit

packages/nodes-base/nodes/PayPal/GenericFunctions.ts

@@ -0,0 +1,134 @@
+import type {
+	JsonObject,
+	IDataObject,
+	IExecuteFunctions,
+	IHookFunctions,
+	ILoadOptionsFunctions,
+	IWebhookFunctions,
+	IHttpRequestMethods,
+	IRequestOptions,
+} from 'n8n-workflow';
+import { BINARY_ENCODING, NodeApiError, NodeOperationError } from 'n8n-workflow';
+
+function getEnvironment(env: string) {
+	return {
+		sanbox: 'https://api-m.sandbox.paypal.com',
+		live: 'https://api-m.paypal.com',
+	}[env];
+}
+
+async function getAccessToken(
+	this: IHookFunctions | IExecuteFunctions | ILoadOptionsFunctions | IWebhookFunctions,
+): Promise<any> {
+	const credentials = await this.getCredentials('payPalApi');
+	const env = getEnvironment(credentials.env as string);
+	const data = Buffer.from(`${credentials.clientId}:${credentials.secret}`).toString(
+		BINARY_ENCODING,
+	);
+	const headerWithAuthentication = Object.assign(
+		{},
+		{ Authorization: `Basic ${data}`, 'Content-Type': 'application/x-www-form-urlencoded' },
+	);
+	const options: IRequestOptions = {
+		headers: headerWithAuthentication,
+		method: 'POST',
+		form: {
+			grant_type: 'client_credentials',
+		},
+		uri: `${env}/v1/oauth2/token`,
+		json: true,
+	};
+	try {
+		return await this.helpers.request(options);
+	} catch (error) {
+		throw new NodeOperationError(this.getNode(), error as Error);
+	}
+}
+
+export async function payPalApiRequest(
+	this: IHookFunctions | IExecuteFunctions | ILoadOptionsFunctions | IWebhookFunctions,
+	endpoint: string,
+	method: IHttpRequestMethods,
+
+	body: any = {},
+	query?: IDataObject,
+	uri?: string,
+): Promise<any> {
+	const credentials = await this.getCredentials('payPalApi');
+	const env = getEnvironment(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) {
+		throw new NodeApiError(this.getNode(), error as JsonObject);
+	}
+}
+
+function getNext(links: IDataObject[]): string | undefined {
+	for (const link of links) {
+		if (link.rel === 'next') {
+			return link.href as string;
+		}
+	}
+	return undefined;
+}
+
+/**
+ * Make an API request to paginated paypal endpoint
+ * and return all results
+ */
+export async function payPalApiRequestAllItems(
+	this: IHookFunctions | IExecuteFunctions | ILoadOptionsFunctions,
+	propertyName: string,
+	endpoint: string,
+	method: IHttpRequestMethods,
+
+	body: any = {},
+	query?: IDataObject,
+	uri?: string,
+): Promise<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 as IDataObject[]);
+		returnData.push.apply(returnData, responseData[propertyName] as IDataObject[]);
+	} while (getNext(responseData.links as IDataObject[]) !== undefined);
+
+	return returnData;
+}
+
+export function validateJSON(json: string | undefined): 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(' ');
+}