convert notifications into modules

server/notification-providers/smtp.js

@@ -0,0 +1,43 @@
+const nodemailer = require("nodemailer");
+const NotificationProvider = require("./notification-provider");
+
+class SMTP extends NotificationProvider {
+
+    name = "smtp";
+
+    async send(notification, msg, monitorJSON = null, heartbeatJSON = null) {
+
+        const config = {
+            host: notification.smtpHost,
+            port: notification.smtpPort,
+            secure: notification.smtpSecure,
+        };
+
+        // Should fix the issue in https://github.com/louislam/uptime-kuma/issues/26#issuecomment-896373904
+        if (notification.smtpUsername || notification.smtpPassword) {
+            config.auth = {
+                user: notification.smtpUsername,
+                pass: notification.smtpPassword,
+            };
+        }
+
+        let transporter = nodemailer.createTransport(config);
+
+        let bodyTextContent = msg;
+        if (heartbeatJSON) {
+            bodyTextContent = `${msg}\nTime (UTC): ${heartbeatJSON["time"]}`;
+        }
+
+        // send mail with defined transport object
+        await transporter.sendMail({
+            from: `"Uptime Kuma" <${notification.smtpFrom}>`,
+            to: notification.smtpTo,
+            subject: msg,
+            text: bodyTextContent,
+        });
+
+        return "Sent Successfully.";
+    }
+}
+
+module.exports = SMTP;