✨ Add MailerLite Node & Trigger (#1067)

* ✨ MailerLite Node & Trigger

* ⚡ Set correct name to node and trigger

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

@@ -0,0 +1,185 @@
+import {
+	IExecuteFunctions,
+} from 'n8n-core';
+
+import {
+	IDataObject,
+	ILoadOptionsFunctions,
+	INodeExecutionData,
+	INodePropertyOptions,
+	INodeType,
+	INodeTypeDescription,
+} from 'n8n-workflow';
+
+import {
+	mailerliteApiRequest,
+	mailerliteApiRequestAllItems,
+} from './GenericFunctions';
+
+import {
+	subscriberFields,
+	subscriberOperations,
+} from './SubscriberDescription';
+
+export class MailerLite implements INodeType {
+	description: INodeTypeDescription = {
+		displayName: 'MailerLite',
+		name: 'marilerLite',
+		icon: 'file:mailerLite.png',
+		group: ['input'],
+		version: 1,
+		subtitle: '={{$parameter["operation"] + ": " + $parameter["resource"]}}',
+		description: 'Consume Mailer Lite API.',
+		defaults: {
+			name: 'MailerLite',
+			color: '#58be72',
+		},
+		inputs: ['main'],
+		outputs: ['main'],
+		credentials: [
+			{
+				name: 'mailerLiteApi',
+				required: true,
+			},
+		],
+		properties: [
+			{
+				displayName: 'Resource',
+				name: 'resource',
+				type: 'options',
+				options: [
+					{
+						name: 'Subscriber',
+						value: 'subscriber',
+					},
+				],
+				default: 'subscriber',
+				description: 'The resource to operate on.'
+			},
+			...subscriberOperations,
+			...subscriberFields,
+		],
+	};
+
+	methods = {
+		loadOptions: {
+			// Get all the available custom fields to display them to user so that he can
+			// select them easily
+			async getCustomFields(this: ILoadOptionsFunctions): Promise<INodePropertyOptions[]> {
+				const returnData: INodePropertyOptions[] = [];
+				const fields = await mailerliteApiRequest.call(this, 'GET', '/fields');
+				for (const field of fields) {
+					returnData.push({
+						name: field.key,
+						value: field.key,
+					});
+				}
+				return returnData;
+			},
+		},
+	};
+
+	async execute(this: IExecuteFunctions): Promise<INodeExecutionData[][]> {
+		const items = this.getInputData();
+		const returnData: IDataObject[] = [];
+		const length = (items.length as unknown) as number;
+		const qs: IDataObject = {};
+		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 === 'subscriber') {
+				//https://developers.mailerlite.com/reference#create-a-subscriber
+				if (operation === 'create') {
+					const email  = this.getNodeParameter('email', i) as string;
+
+					const additionalFields = this.getNodeParameter('additionalFields', i) as IDataObject;
+
+					const body: IDataObject = {
+						email,
+						fields: [],
+					};
+
+					Object.assign(body, additionalFields);
+
+					if (additionalFields.customFieldsUi) {
+						const customFieldsValues = (additionalFields.customFieldsUi as IDataObject).customFieldsValues as IDataObject[];
+
+						if (customFieldsValues) {
+							const fields = {};
+
+							for (const customFieldValue of customFieldsValues) {
+								//@ts-ignore
+								fields[customFieldValue.fieldId] = customFieldValue.value;
+							}
+
+							body.fields = fields;
+							delete body.customFieldsUi;
+						}
+					}
+
+					responseData = await mailerliteApiRequest.call(this, 'POST', '/subscribers', body);
+				}
+				//https://developers.mailerlite.com/reference#single-subscriber
+				if (operation === 'get') {
+					const subscriberId  = this.getNodeParameter('subscriberId', i) as string;
+
+					responseData = await mailerliteApiRequest.call(this, 'GET', `/subscribers/${subscriberId}`);
+				}
+				//https://developers.mailerlite.com/reference#subscribers
+				if (operation === 'getAll') {
+					const returnAll  = this.getNodeParameter('returnAll', i) as boolean;
+
+					const filters = this.getNodeParameter('filters', i) as IDataObject;
+
+					Object.assign(qs, filters);
+
+					if (returnAll) {
+
+						responseData = await mailerliteApiRequestAllItems.call(this, 'GET', `/subscribers`, {}, qs);
+					} else {
+						qs.limit = this.getNodeParameter('limit', i) as number;
+
+						responseData = await mailerliteApiRequest.call(this, 'GET', `/subscribers`, {}, qs);
+					}
+				}
+				//https://developers.mailerlite.com/reference#update-subscriber
+				if (operation === 'update') {
+					const subscriberId  = this.getNodeParameter('subscriberId', i) as string;
+
+					const updateFields = this.getNodeParameter('updateFields', i) as IDataObject;
+
+					const body: IDataObject = {};
+
+					Object.assign(body, updateFields);
+
+					if (updateFields.customFieldsUi) {
+						const customFieldsValues = (updateFields.customFieldsUi as IDataObject).customFieldsValues as IDataObject[];
+
+						if (customFieldsValues) {
+							const fields = {};
+
+							for (const customFieldValue of customFieldsValues) {
+								//@ts-ignore
+								fields[customFieldValue.fieldId] = customFieldValue.value;
+							}
+
+							body.fields = fields;
+							delete body.customFieldsUi;
+						}
+					}
+
+					responseData = await mailerliteApiRequest.call(this, 'PUT', `/subscribers/${subscriberId}`, body);
+				}
+			}
+		}
+		if (Array.isArray(responseData)) {
+			returnData.push.apply(returnData, responseData as IDataObject[]);
+
+		} else if (responseData !== undefined) {
+			returnData.push(responseData as IDataObject);
+		}
+		return [this.helpers.returnJsonArray(returnData)];
+	}
+}