Admin features frontend

project/FrontEnd/collaborative_science_platform/lib/models/basic_user.dart

@@ -3,20 +3,22 @@ class BasicUser {
   String bio;
   bool emailNotificationPreference;
   bool showActivity;
+  String userType;
 
   BasicUser({
-    required this.basicUserId,
-    required this.bio,
-    required this.emailNotificationPreference,
-    required this.showActivity,
+    this.basicUserId = 0,
+    this.bio = "",
+    this.emailNotificationPreference = true,
+    this.showActivity = true,
+    this.userType = "",
   });
   factory BasicUser.fromJson(Map<String, dynamic> jsonString) {
     return BasicUser(
       basicUserId: jsonString["basic_user_id"],
       bio: jsonString["bio"],
       emailNotificationPreference: jsonString["email_notification_preference"],
       showActivity: jsonString["show_activity_preference"],
+      userType: jsonString["user_type"],
     );
   }
-
 }

project/FrontEnd/collaborative_science_platform/lib/screens/error_page/error_page.dart

@@ -0,0 +1,57 @@
+import 'package:collaborative_science_platform/screens/home_page/home_page.dart';
+import 'package:collaborative_science_platform/utils/colors.dart';
+import 'package:collaborative_science_platform/utils/text_styles.dart';
+import 'package:flutter/material.dart';
+import 'package:go_router/go_router.dart';
+
+class ErrorPage extends StatelessWidget {
+  static const routeName = '/page_not_found/';
+  const ErrorPage({
+    super.key,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.center,
+      children: <Widget>[
+        const SizedBox(height: 20),
+        Container(
+          margin: const EdgeInsets.fromLTRB(15.0, 0.0, 15.0, 0.0),
+          child: Text(
+            "404",
+            style: TextStyles.title4.copyWith(fontSize: 120),
+          ),
+        ),
+        Container(
+          margin: const EdgeInsets.fromLTRB(15.0, 5.0, 15.0, 0.0),
+          child: const Text(
+            "This page doesn't exist.",
+            style: TextStyle(
+              fontSize: 20,
+              fontWeight: FontWeight.bold,
+              color: AppColors.secondaryDarkColor,
+            ),
+          ),
+        ),
+        const SizedBox(height: 8.0), // Add space between texts
+        MouseRegion(
+          cursor: SystemMouseCursors.click,
+          child: GestureDetector(
+            onTap: () {
+              context.go(HomePage.routeName);
+            },
+            child: const Text(
+              "Return to main page",
+              style: TextStyle(
+                fontSize: 16.0,
+                fontWeight: FontWeight.bold,
+                color: Color.fromARGB(255, 67, 85, 186),
+              ),
+            ),
+          ),
+        ),
+      ],
+    );
+  }
+}

project/FrontEnd/collaborative_science_platform/lib/screens/node_details_page/widgets/confirmation_page.dart

@@ -0,0 +1,23 @@
+import 'package:flutter/material.dart';
+
+class ConfirmationPage extends StatelessWidget {
+  const ConfirmationPage({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return const AlertDialog(
+      title: SizedBox(
+        width: 500,
+        child: Row(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: [
+            Text('Are you sure?', style: TextStyle(fontSize: 20.0)),
+          ],
+        ),
+      ),
+      backgroundColor: Colors.white,
+      shadowColor: Colors.white,
+      content: null,
+    );
+  }
+}