API for otp validation and setting password

lib/api/services/auth_service.dart

@@ -25,7 +25,8 @@ class AuthService {
         print(e.toString());
       }
       if (e.response?.statusCode == 401) {
-        throw AuthException('Invalid credentials');
+        throw AuthException(
+            e.response?.data['error'] ?? 'SOMETHING WENT WRONG');
       }
       throw NetworkException('Network error during login');
     } catch (e) {
@@ -91,4 +92,53 @@ class AuthService {
           'Unexpected error during TPIN setup: ${e.toString()}');
     }
   }
+
+  Future<void> sendOtpForSettingPassword(String customerNo) async {
+    try {
+      final response =
+          await _dio.get('/api/otp/send/set-password', queryParameters: {
+        'customerNo': customerNo,
+      });
+      if (response.statusCode != 200) {
+        throw Exception(response.data['error'] ?? 'Failed to send OTP');
+      }
+      return;
+    } on DioException catch (e) {
+      throw Exception('Network error: ${e.message}');
+    } catch (e) {
+      throw Exception('Unexpected error: ${e.toString()}');
+    }
+  }
+
+  Future<String> verifyOtpForSettingPassword(
+      String customerNo, String otp) async {
+    try {
+      final response = await _dio.get(
+        '/api/otp/verify/set-password',
+        queryParameters: {'customerNo': customerNo, 'otp': otp},
+      );
+
+      if (response.statusCode == 200) {
+        return response.data['token'];
+      } else {
+        throw Exception(response.data['error'] ?? 'Failed to verify OTP');
+      }
+    } on DioException catch (e) {
+      throw Exception('Network error: ${e.message}');
+    } catch (e) {
+      throw Exception('Unexpected error: ${e.toString()}');
+    }
+  }
+
+  Future changePassword(String newPassword, String token) async {
+    final response = await _dio.post(
+      '/api/auth/lpassword',
+      data: {'login_password': newPassword},
+      options: Options(headers: {'Authorization': 'Bearer $token'}),
+    );
+    if (response.statusCode != 200) {
+      throw Exception('Error setting password');
+    }
+    return;
+  }
 }