adding Mailjet as new adapter 🎉

lib/notification/adapter/mailJet.js

@@ -0,0 +1,49 @@
+const mailjet = require('node-mailjet');
+
+const path = require('path');
+const fs = require('fs');
+const template = fs.readFileSync(path.resolve(__dirname, '../', 'emailTemplate/template.hbs'), 'utf8');
+
+const Handlebars = require('handlebars');
+const emailTemplate = Handlebars.compile(template);
+
+/**
+ * sends a new listing using MailJet
+ * @param serviceName e.g immoscout
+ * @param newListings an array with newly found listings
+ * @param notificationConfig config of this notification adapter
+ * * @param jobKey name of the current job that is being executed
+ * @returns {Promise<Chat.PostMessage.Response> | void}
+ */
+exports.send = (serviceName, newListings, notificationConfig, jobKey) => {
+  const { apiPublicKey, apiPrivateKey, enabled, receiver, from } = notificationConfig.mailJet;
+
+  if (!enabled) {
+    return [Promise.resolve()];
+  }
+
+  return mailjet
+    .connect(apiPublicKey, apiPrivateKey)
+    .post('send', { version: 'v3.1' })
+    .request({
+      Messages: [
+        {
+          From: {
+            Email: from,
+            Name: 'Fredy',
+          },
+          To: [
+            {
+              Email: receiver,
+            },
+          ],
+          Subject: `Fredy found ${newListings.length} new listings for ${serviceName}`,
+          HTMLPart: emailTemplate({
+            serviceName: `Job: (${jobKey}) | Service: ${serviceName}`,
+            numberOfListings: newListings.length,
+            listings: newListings,
+          }),
+        },
+      ],
+    });
+};