add chat system

UI_V2/helpers/notifications.py

@@ -0,0 +1,53 @@
+
+
+import flet as ft
+from typing import Any
+
+
+def send_browser_notification(page: ft.Page, title: str, body: str) -> None:
+    """Broadcast a browser notification event to all connected sessions.
+
+    This is typically called from the client (shop) side when a new chat
+    is opened or the first message is sent. The actual visual notification
+    will be displayed only on admin pages that handle the event.
+    """
+    if page is None:
+        return
+
+    payload: dict[str, Any] = {
+        "type": "browser_notification",
+        "title": title,
+        "body": body,
+    }
+
+    # Use PubSub so that admin sessions can react and show a snackbar/toast.
+    try:
+        # send_all so that any admin pages, and potentially this page, can receive it
+        page.pubsub.send_all(payload)
+    except Exception:
+        # If PubSub is not available, we simply do nothing; email still covers notification.
+        pass
+
+
+def show_local_browser_notification(page: ft.Page, title: str, body: str) -> None:
+    """Show a visual notification (snackbar) on the current page for admin users.
+
+    This is intended to be called from admin pages when a `browser_notification`
+    event is received via PubSub. It will silently do nothing for non-admin users.
+    """
+    if page is None:
+        return
+
+    user = page.session.get("user") if hasattr(page, "session") else None
+    if not user or user.get("role") != "admin":
+        # Only admins see these notifications in the browser
+        return
+
+    message = f"{title}: {body}" if title else body
+
+    page.snack_bar = ft.SnackBar(
+        content=ft.Text(message),
+        open=True,
+        action="OK",
+    )
+    page.update()