convert notifications into modules

server/notification-providers/notification-provider.js

@@ -0,0 +1,36 @@
+class NotificationProvider {
+
+    /**
+     * Notification Provider Name
+     * @type string
+     */
+    name = undefined;
+
+    /**
+     * @param notification : BeanModel
+     * @param msg : string General Message
+     * @param monitorJSON : object Monitor details (For Up/Down only)
+     * @param heartbeatJSON : object Heartbeat details (For Up/Down only)
+     * @returns {Promise<string>} Return Successful Message
+     * Throw Error with fail msg
+     */
+    async send(notification, msg, monitorJSON = null, heartbeatJSON = null) {
+        throw new Error("Have to override Notification.send(...)");
+    }
+
+    throwGeneralAxiosError(error) {
+        let msg = "Error: " + error + " ";
+
+        if (error.response && error.response.data) {
+            if (typeof error.response.data === "string") {
+                msg += error.response.data;
+            } else {
+                msg += JSON.stringify(error.response.data)
+            }
+        }
+
+        throw new Error(msg)
+    }
+}
+
+module.exports = NotificationProvider;