first commit

src/entities/Notification.java

@@ -0,0 +1,24 @@
+package entities;
+
+import utils.NotificationState;
+import utils.SendNotificationStrategy;
+
+public abstract class Notification {
+    protected String content;
+    protected User user;
+    protected NotificationState state;
+    protected SendNotificationStrategy strategy;
+
+    public Notification(String content, User user, SendNotificationStrategy strategy) {
+        this.content = content;
+        this.user = user;
+        this.state = NotificationState.PENDING;
+        this.strategy = strategy;
+    }
+
+    protected boolean isSendable() {
+        return this.state != NotificationState.SENT && this.state != NotificationState.READ;
+    }
+
+    public abstract void send();
+}