mpin add and 2026-04-19 updates

lib/model/login_model.dart

@@ -1,23 +1,38 @@
-// login_model.dart
-
-class LoginModel {
-  String? mobile;
-  String? otp;
-
-  LoginModel({this.mobile, this.otp});
-
-  // For sending mobile number to request OTP
-  Map<String, dynamic> toJsonMobile() {
-    return {'mobile': mobile};
-  }
-
-  // For sending mobile + OTP for verification
-  Map<String, dynamic> toJsonOtp() {
-    return {'mobile': mobile, 'otp': otp};
-  }
-
-  // Response from API
-  factory LoginModel.fromJson(Map<String, dynamic> json) {
-    return LoginModel(mobile: json['mobile'], otp: json['otp']);
-  }
-}
+// login_model.dart
+
+class LoginModel {
+  String? email;
+  String? pin;
+  String? mobile;
+  String? otp;
+
+  LoginModel({this.email, this.pin, this.mobile, this.otp});
+
+  // For sending mobile number to request OTP (Legacy)
+  Map<String, dynamic> toJsonMobile() {
+    return {'mobile': mobile};
+  }
+
+  // For sending mobile + OTP for verification (Legacy)
+  Map<String, dynamic> toJsonOtp() {
+    return {'mobile': mobile, 'otp': otp};
+  }
+
+  // For Email + PIN Login
+  Map<String, dynamic> toJsonEmailPin() {
+    return {
+      'email': email,
+      'pin': pin,
+    };
+  }
+
+  // Response from API
+  factory LoginModel.fromJson(Map<String, dynamic> json) {
+    return LoginModel(
+      email: json['email'],
+      pin: json['pin'],
+      mobile: json['mobile'],
+      otp: json['otp'],
+    );
+  }
+}