chat history added (backend testing)

app/backend/ChatHistory.ts

@@ -0,0 +1,27 @@
+type ChatMessage = {
+    name: string;
+    message: any;
+    timestamp: number;
+};
+
+let chatHistory: ChatMessage[] = [];
+
+function addMessage(name: string, message: any): void {
+    const newMessage: ChatMessage = {
+        name: name,
+        message: message,
+        timestamp: Date.now()
+    };
+    chatHistory.push(newMessage);
+    console.log(`Added message from ${name}: ${message}`);
+}
+
+function removeMessage(timestamp: number): void {
+    const index = chatHistory.findIndex((msg) => msg.timestamp === timestamp);
+    if (index > -1) {
+        chatHistory.splice(index, 1);
+        console.log(`Removed message with timestamp: ${timestamp}`);
+    } else {
+        console.log(`Message not found with timestamp: ${timestamp}`);
+    }
+}