init

app/Contracts/NotificationChannel.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace App\Contracts;
+
+interface NotificationChannel
+{
+    public function validationRules(): array;
+
+    public function data(array $input): array;
+
+    public function connect(): bool;
+
+    public function sendMessage(string $subject, string $text): void;
+}