INFRA: Set Up Project.

lib/controllers/otp_verification_controller.dart

@@ -0,0 +1,131 @@
+import 'package:customer/screen_ui/location_enable_screens/location_permission_screen.dart';
+import 'package:customer/themes/show_toast_dialog.dart';
+import 'package:firebase_auth/firebase_auth.dart';
+import 'package:flutter/material.dart';
+import 'package:get/get.dart';
+import '../constant/constant.dart';
+import '../models/user_model.dart';
+import '../screen_ui/auth_screens/login_screen.dart';
+import '../screen_ui/auth_screens/sign_up_screen.dart';
+import '../screen_ui/service_home_screen/service_list_screen.dart';
+import '../service/fire_store_utils.dart';
+import '../utils/notification_service.dart';
+
+class OtpVerifyController extends GetxController {
+  /// Use a normal controller (NOT obs)
+  final Rx<TextEditingController> otpController = TextEditingController().obs;
+
+  /// Reactive Strings
+  final RxString countryCode = "".obs;
+  final RxString phoneNumber = "".obs;
+  final RxString verificationId = "".obs;
+  RxInt resendToken = 0.obs;
+
+  final FirebaseAuth _auth = FirebaseAuth.instance;
+
+  @override
+  void onInit() {
+    super.onInit();
+
+    final args = Get.arguments ?? {};
+
+    countryCode.value = args['countryCode'] ?? "";
+    phoneNumber.value = args['phoneNumber'] ?? "";
+    verificationId.value = args['verificationId'] ?? "";
+  }
+
+  Future<bool> sendOTP() async {
+    await FirebaseAuth.instance.verifyPhoneNumber(
+      phoneNumber: countryCode.value + phoneNumber.value,
+      verificationCompleted: (PhoneAuthCredential credential) {},
+      verificationFailed: (FirebaseAuthException e) {},
+      codeSent: (String verificationId0, int? resendToken0) async {
+        verificationId.value = verificationId0;
+        resendToken.value = resendToken0!;
+        ShowToastDialog.showToast("OTP sent".tr);
+      },
+      timeout: const Duration(seconds: 25),
+      forceResendingToken: resendToken.value,
+      codeAutoRetrievalTimeout: (String verificationId0) {
+        verificationId0 = verificationId.value;
+      },
+    );
+    return true;
+  }
+
+  void verifyOtp() async {
+    if (otpController.value.text.length != 6) {
+      ShowToastDialog.showToast("Enter valid 6-digit OTP".tr);
+      return;
+    }
+
+    try {
+      ShowToastDialog.showLoader("Verifying OTP...".tr);
+
+      final credential = PhoneAuthProvider.credential(verificationId: verificationId.value, smsCode: otpController.value.text.trim());
+
+      final fcmToken = await NotificationService.getToken();
+      final result = await _auth.signInWithCredential(credential);
+
+      if (result.additionalUserInfo?.isNewUser == true) {
+        final userModel = UserModel(id: result.user!.uid, countryCode: countryCode.value, phoneNumber: phoneNumber.value, fcmToken: fcmToken, active: true);
+        ShowToastDialog.closeLoader();
+        Get.to(() => const SignUpScreen(), arguments: {'type': 'mobileNumber', 'userModel': userModel});
+        return;
+      }
+
+      final exists = await FireStoreUtils.userExistOrNot(result.user!.uid);
+      ShowToastDialog.closeLoader();
+
+      if (!exists) {
+        final userModel = UserModel(id: result.user!.uid, countryCode: countryCode.value, phoneNumber: phoneNumber.value, fcmToken: fcmToken);
+        Get.off(() => const SignUpScreen(), arguments: {'type': 'mobileNumber', 'userModel': userModel});
+        return;
+      }
+
+      final userModel = await FireStoreUtils.getUserProfile(result.user!.uid);
+      if (userModel == null || userModel.role != 'customer') {
+        await _auth.signOut();
+        Get.offAll(() => const LoginScreen());
+        return;
+      }
+
+      if (userModel.active == false) {
+        ShowToastDialog.showToast("This user is disabled".tr);
+        await _auth.signOut();
+        Get.offAll(() => const LoginScreen());
+        return;
+      }
+
+      userModel.fcmToken = fcmToken;
+      await FireStoreUtils.updateUser(userModel);
+
+      if (userModel.shippingAddress?.isNotEmpty ?? false) {
+        final defaultAddress = userModel.shippingAddress!.firstWhere((e) => e.isDefault == true, orElse: () => userModel.shippingAddress!.first);
+        Constant.selectedLocation = defaultAddress;
+
+        Get.offAll(() => const ServiceListScreen());
+      } else {
+        Get.offAll(() => const LocationPermissionScreen());
+      }
+    } catch (e) {
+      ShowToastDialog.closeLoader();
+      ShowToastDialog.showToast("Invalid OTP or Verification Failed".tr);
+    }
+  }
+
+  String maskPhoneNumber(String phone) {
+    if (phone.length < 4) return phone;
+
+    final first = phone.substring(0, 2);
+    final last = phone.substring(phone.length - 2);
+    return "$first*** ***$last";
+  }
+
+  @override
+  void dispose() {
+    otpController.value.dispose();
+    // TODO: implement dispose
+    super.dispose();
+  }
+}