Added User Profile Screen

lib/providers/profile_provider.dart

@@ -1,6 +1,7 @@
 import 'dart:async';
 
 import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:supabase_flutter/supabase_flutter.dart';
 
 import '../models/profile.dart';
 import 'auth_provider.dart';
@@ -36,6 +37,37 @@ final profilesProvider = StreamProvider<List<Profile>>((ref) {
       .map((rows) => rows.map(Profile.fromMap).toList());
 });
 
+/// Controller for the current user's profile (update full name / password).
+final profileControllerProvider = Provider<ProfileController>((ref) {
+  final client = ref.watch(supabaseClientProvider);
+  return ProfileController(client);
+});
+
+class ProfileController {
+  ProfileController(this._client);
+
+  final SupabaseClient _client;
+
+  /// Update the `profiles.full_name` for the given user id.
+  Future<void> updateFullName({
+    required String userId,
+    required String fullName,
+  }) async {
+    await _client
+        .from('profiles')
+        .update({'full_name': fullName})
+        .eq('id', userId);
+  }
+
+  /// Update the current user's password (works for OAuth users too).
+  Future<void> updatePassword(String password) async {
+    if (password.length < 8) {
+      throw Exception('Password must be at least 8 characters');
+    }
+    await _client.auth.updateUser(UserAttributes(password: password));
+  }
+}
+
 final isAdminProvider = Provider<bool>((ref) {
   final profileAsync = ref.watch(currentProfileProvider);
   return profileAsync.maybeWhen(