added api for forgot password

lib/view_models/auth_view_model.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:tm_app/data/services/model/customer/customer.dart';
+import 'package:tm_app/data/services/model/forgot_password_response/forgot_password_response_model.dart';
 
 import '../core/utils/result.dart';
 import '../data/repositories/auth_repository.dart';
@@ -10,14 +11,12 @@ class AuthViewModel with ChangeNotifier {
   final AuthRepository _authRepository;
 
   AuthViewModel({required AuthRepository authRepository})
-    : _authRepository = authRepository {
+      : _authRepository = authRepository {
     usernameController.addListener(_onTextChanged);
     passwordController.addListener(_onTextChanged);
     emailController.addListener(_onTextChanged);
     otpController.addListener(_onTextChanged);
     newPasswordController.addListener(_onTextChanged);
-    // usernameFocus.addListener(_onTextChanged);
-    // passwordFocus.addListener(_onTextChanged);
   }
 
   final TextEditingController usernameController = TextEditingController();
@@ -25,6 +24,7 @@ class AuthViewModel with ChangeNotifier {
   final TextEditingController emailController = TextEditingController();
   final TextEditingController newPasswordController = TextEditingController();
   final TextEditingController otpController = TextEditingController();
+
   final FocusNode usernameFocus = FocusNode();
   final FocusNode passwordFocus = FocusNode();
   final FocusNode emailFocus = FocusNode();
@@ -33,25 +33,36 @@ class AuthViewModel with ChangeNotifier {
 
   bool _obscurePassword = true;
   bool get obscurePassword => _obscurePassword;
+
   bool _obscureForgotPassword = true;
   bool get obscureForgotPassword => _obscureForgotPassword;
+
   bool get isLoginEnabled =>
-      usernameController.text.isNotEmpty && passwordController.text.isNotEmpty;
+      usernameController.text.isNotEmpty &&
+      passwordController.text.isNotEmpty;
 
   // Auth state
   bool _isLoading = false;
   String? _errorMessage;
   Customer? _loggedInUser;
+  String? successMessage;
+  String? _forgotPasswordMessage;
 
   bool get isLoading => _isLoading;
   String? get errorMessage => _errorMessage;
   Customer? get loggedInUser => _loggedInUser;
+  String? get forgotPasswordMessage => _forgotPasswordMessage;
 
   void togglePasswordVisibility() {
     _obscurePassword = !_obscurePassword;
     notifyListeners();
   }
 
+  void toggleForgotPasswordVisibility() {
+    _obscureForgotPassword = !_obscureForgotPassword;
+    notifyListeners();
+  }
+
   bool get isEmailValid {
     final email = emailController.text.trim();
     final emailRegex = RegExp(r'^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$');
@@ -78,11 +89,6 @@ class AuthViewModel with ChangeNotifier {
     return hasMinLength && hasUppercase && hasLowercase && hasSpecialChar;
   }
 
-  void toggleForgotPasswordVisibility() {
-    _obscureForgotPassword = !_obscureForgotPassword;
-    notifyListeners();
-  }
-
   void _onTextChanged() {
     notifyListeners();
   }
@@ -102,8 +108,6 @@ class AuthViewModel with ChangeNotifier {
     switch (result) {
       case Ok<LoginResponseModel>():
         _loggedInUser = result.value.data.customer;
-        usernameController.text.trim();
-        passwordController.text.trim();
         usernameController.clear();
         passwordController.clear();
         break;
@@ -114,6 +118,8 @@ class AuthViewModel with ChangeNotifier {
 
     _isLoading = false;
     notifyListeners();
+
+    // reset error after notify
     _errorMessage = null;
     notifyListeners();
   }
@@ -140,16 +146,60 @@ class AuthViewModel with ChangeNotifier {
     }
 
     notifyListeners();
+
+    // reset error after notify
     _errorMessage = null;
     notifyListeners();
   }
 
+  Future<void> forgotPassword(BuildContext context) async {
+    _isLoading = true;
+    _errorMessage = null;
+    successMessage = null;
+    notifyListeners();
+
+    final result = await _authRepository.forgotPassword(
+      email: emailController.text.trim(),
+    );
+
+    switch (result) {
+      case Ok<ForgotPasswordResponseModel>():
+        _isLoading = false;
+        successMessage = result.value.message;
+        notifyListeners();
+
+        // پاک شدن بعد از یک بار مصرف
+        Future.microtask(() {
+          successMessage = null;
+        });
+        break;
+
+      case Error<ForgotPasswordResponseModel>():
+        _isLoading = false;
+        _errorMessage = result.error.toString();
+        notifyListeners();
+
+        Future.microtask(() {
+          _errorMessage = null;
+        });
+        break;
+    }
+  }
+
   @override
   void dispose() {
     usernameController.dispose();
     passwordController.dispose();
+    emailController.dispose();
+    newPasswordController.dispose();
+    otpController.dispose();
+
     usernameFocus.dispose();
     passwordFocus.dispose();
+    emailFocus.dispose();
+    newPasswordFocus.dispose();
+    otpFocus.dispose();
+
     super.dispose();
   }
 }