Added Mandrill support

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

@@ -0,0 +1,69 @@
+import { OptionsWithUri } from 'request';
+
+import {
+	IExecuteFunctions,
+	IHookFunctions,
+    ILoadOptionsFunctions,
+    IExecuteSingleFunctions
+} from 'n8n-core';
+
+import * as _ from 'lodash';
+
+export async function mandrillApiRequest(this: IHookFunctions | IExecuteFunctions | IExecuteSingleFunctions | ILoadOptionsFunctions, resource: string, method: string, action: string, body: any = {}, headers?: object): Promise<any> { // tslint:disable-line:no-any
+    const credentials = this.getCredentials('mandrillApi');
+
+    if (credentials === undefined) {
+		throw new Error('No credentials got returned!');
+    }
+    
+    const data = Object.assign({ }, body, { key: credentials.apiKey })
+
+	const endpoint = 'mandrillapp.com/api/1.0';
+
+	const options: OptionsWithUri = {
+		headers: headers,
+		method,
+		uri: `https://${endpoint}${resource}${action}.json`,
+        body: data,
+        json: true
+	};
+
+	try {
+        return await this.helpers.request!(options);
+	} catch (error) {
+		console.error(error);
+
+		const errorMessage = error.response.body.message || error.response.body.Message;
+		if (error.name === 'Invalid_Key') {
+			throw new Error('The provided API key is not a valid Mandrill API key');
+		} else if (error.name === 'ValidationError') {
+			throw new Error('The parameters passed to the API call are invalid or not provided when required');
+        } else if (error.name === 'GeneralError') {
+			throw new Error('An unexpected error occurred processing the request. Mandrill developers will be notified.');
+        }
+
+		if (errorMessage !== undefined) {
+			throw errorMessage;
+		}
+		throw error.response.body;
+    }
+}
+    
+    export function getToEmailArray(toEmail: String): Array<any> { // tslint:disable-line:no-any
+        let toEmailArray
+        if (toEmail.split(',').length > 0) {
+            const array = toEmail.split(',')
+            toEmailArray = _.map(array, (email) => {
+                return {
+                    email: email,
+                    type: 'to'
+                }
+            })
+        } else {
+            toEmailArray = [{
+                email: toEmail,
+                type: 'to'
+            }]
+        }
+        return toEmailArray
+    }