fix: user and admin login

backend/app/app.py

@@ -100,7 +100,7 @@ def get_user_by_id(user_id):
         try:
             cursor = connection.cursor(dictionary=True)
             query = """
-                SELECT UserID, GoogleID, Username, Email, FirstName, LastName, PhoneNumber, UName, Birthday, Gender, Occupation
+                SELECT UserID, GoogleID, Username, Email, FirstName, LastName, PhoneNumber, UName, Birthday, Gender, Occupation, Level
                 FROM Users
                 WHERE UserID = %s
             """
@@ -314,7 +314,7 @@ def sign_in():
                 'PhoneNumber': user_data['PhoneNumber'],
                 'Gender': user_data['Gender'],
                 'Occupation': user_data['Occupation'],
-
+                'Level': user_data['Level'],
                 # Add other user data fields as needed
             }
         }

frontend/app/sign_in/page.tsx

@@ -8,10 +8,12 @@ import Link from "next/link";
 import { useState } from "react";
 import { motion } from "framer-motion";
 import { signIn, useSession } from "next-auth/react";
+import { useRouter } from "next/navigation";
 
 function Page() {
   const [username, setUsername] = useState("");
   const [password, setPassword] = useState("");
+  const router = useRouter();
 
   const handleUsernameChange = (value: string) => {
     setUsername(value);
@@ -33,10 +35,12 @@ function Page() {
 
       if (response.ok) {
         const data = await response.json();
-        console.log("login success", data);
-        console.log("data", data.user_data);
-        localStorage.setItem("user", JSON.stringify(data.user_data));
-        window.location.href = "/reservation";
+        if (data.user_data.Level === "User") {
+          console.log("login success", data);
+          console.log("data", data.user_data);
+          localStorage.setItem("user", JSON.stringify(data.user_data));
+          router.push("/reservation");
+        } else router.push("/admin_dashboard");
       } else {
         const errorData = await response.json();
         console.error("Login failed:", errorData.message);