✨ Add Mailcheck Node (#1690)

* Add Mailcheck integration

* compress logo

* Add mailcheck node info

* ⚡ Improvements

Co-authored-by: bugagashenkj <bugagashenkj@gmail.com>
Co-authored-by: Nosov Konstantin <nosov@nodeart.io>

packages/nodes-base/nodes/Mailcheck/Mailcheck.node.ts

@@ -0,0 +1,112 @@
+import {
+	IExecuteFunctions,
+} from 'n8n-core';
+
+import {
+	IDataObject,
+	INodeExecutionData,
+	INodeType,
+	INodeTypeDescription,
+} from 'n8n-workflow';
+
+import {
+	mailCheckApiRequest,
+} from './GenericFunctions';
+
+export class Mailcheck implements INodeType {
+	description: INodeTypeDescription = {
+		displayName: 'Mailcheck',
+		name: 'mailcheck',
+		icon: 'file:mailcheck.svg',
+		group: ['transform'],
+		version: 1,
+		subtitle: '={{$parameter["operation"] + ": " + $parameter["resource"]}}',
+		description: 'Consume Mailcheck API',
+		defaults: {
+			name: 'Mailcheck',
+			color: '#4f44d7',
+		},
+		inputs: ['main'],
+		outputs: ['main'],
+		credentials: [
+			{
+				name: 'mailcheckApi',
+				required: true,
+			},
+		],
+		properties: [
+			{
+				displayName: 'Resource',
+				name: 'resource',
+				type: 'options',
+				options: [
+					{
+						name: 'Email',
+						value: 'email',
+					},
+				],
+				default: 'email',
+			},
+			{
+				displayName: 'Operation',
+				name: 'operation',
+				type: 'options',
+				displayOptions: {
+					show: {
+						resource: [
+							'email',
+						],
+					},
+				},
+				options: [
+					{
+						name: 'Check',
+						value: 'check',
+					},
+				],
+				default: 'check',
+			},
+			{
+				displayName: 'Email',
+				name: 'email',
+				type: 'string',
+				displayOptions: {
+					show: {
+						resource: [
+							'email',
+						],
+						operation: [
+							'check',
+						],
+					},
+				},
+				default: '',
+				description: 'Email address to check.',
+			},
+		],
+	};
+
+	async execute(this: IExecuteFunctions): Promise<INodeExecutionData[][]> {
+		const items = this.getInputData();
+		const returnData: IDataObject[] = [];
+		const length = items.length as unknown as number;
+		let responseData;
+
+		const resource = this.getNodeParameter('resource', 0) as string;
+		const operation = this.getNodeParameter('operation', 0) as string;
+		for (let i = 0; i < length; i++) {
+			if (resource === 'email') {
+				if (operation === 'check') {
+					const email = this.getNodeParameter('email', i) as string;
+					responseData = await mailCheckApiRequest.call(this, 'POST', '/singleEmail:check', { email });
+				}
+			}
+			if (Array.isArray(responseData)) {
+				returnData.push.apply(returnData, responseData as IDataObject[]);
+			} else {
+				returnData.push(responseData as IDataObject);
+			}
+		}
+		return [this.helpers.returnJsonArray(returnData)];
+	}
+}