import 'dart:io';

import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter_image_compress/flutter_image_compress.dart';
import 'package:generp/Notifiers/HomeScreenNotifier.dart';
import 'package:generp/Utils/SharedpreferencesService.dart';
import 'package:generp/Utils/app_colors.dart';
import 'package:generp/services/api_calling.dart';
import 'package:image_picker/image_picker.dart';
import 'package:provider/provider.dart';

import '../Models/TechnicianLoadNumbersResponse.dart';
import '../Utils/commonServices.dart';
import '../screens/splash.dart';
import 'package:pin_code_fields/pin_code_fields.dart';

class Paymentdetailsprovider extends ChangeNotifier {
  TextEditingController Amountcontroller = TextEditingController();
  TextEditingController Referencecontroller = TextEditingController();
  TextEditingController nameController = TextEditingController();
  TextEditingController designationController = TextEditingController();
  TextEditingController mobController = TextEditingController();
  TextEditingController altMobController = TextEditingController();
  TextEditingController telController = TextEditingController();
  TextEditingController emailController = TextEditingController();

  String? nameError;
  String? designationError;
  String? mobError;
  String? altMobError;
  String? telError;
  String? emailError;

  String? selectContactError;
  String? selectPaymentError;
  String? selectAmountError;
  String? ReferenceError;
  String? imageError;

  List<PaymentModeList> _payment_mode_drop_down = [];
  List<Contacts> _contacts_drop_down = [];
  String _paymentModeID = "";
  String _PaymentMode = "";
  String _contactID = "";
  String _contact = "";
  String _enteredOtp = "";
  PaymentModeList? _selectPaymentModeList;
  Contacts? _selectContact;
  var _type = "";
  var _refType = "";
  var _refId = "";
  final _account_id = "";
  var _CollectionId = 0;
  var _image_picked = 0;
  final ImagePicker _picker = ImagePicker();
  File? _image;
  File? _imageName;
  final bool _isLoading = true;

  List<PaymentModeList> get paymentModeDropDown => _payment_mode_drop_down;

  List<Contacts> get contactsDropDown => _contacts_drop_down;

  PaymentModeList? get selectPaymentMode => _selectPaymentModeList;

  Contacts? get selectContact => _selectContact;

  String get paymentModeID => _paymentModeID;

  String get PaymentMode => _PaymentMode;

  String get contactID => _contactID;

  String get contact => _contact;

  String get enteredOtp => _enteredOtp;

  get type => _type;

  get refType => _refType;

  get refId => _refId;

  get account_id => _account_id;

  get CollectionId => _CollectionId;

  get image_picked => _image_picked;

  bool get isLoading => _isLoading;

  File? get imagePath => _imageName;

  File? get imageFilePath => _image;

  get imagePicked => _image_picked;

  set imagePath(File? value) {
    _imageName = value;
    notifyListeners();
  }

  set imageFilePath(File? value) {
    _image = value;
    notifyListeners();
  }

  set imagePicked(value) {
    _image_picked = value;
    notifyListeners();
  }

  set enteredOtp(String value) {
    _enteredOtp = value;
    notifyListeners();
  }

  set selectContact(value) {
    _selectContact = value;
    _contact = value?.name;
    _contactID = value?.mob1;
    selectContactError = null;
    notifyListeners();
  }

  set selectPaymentMode(value) {
    _selectPaymentModeList = value;
    _PaymentMode = value?.name ?? "";
    _paymentModeID = value?.id ?? "";
    selectPaymentError = null;
    notifyListeners();
  }

  set paymentModeID(value) {
    _paymentModeID = value;
    selectPaymentError = null;
    notifyListeners();
  }

  set PaymentMode(value) {
    _PaymentMode = value;
    notifyListeners();
  }

  set contact(value) {
    _contact = value;
    notifyListeners();
  }

  set contactID(value) {
    _contactID = value;
    selectContactError = null;
    notifyListeners();
  }

  Future<void> LoadNumbersAPI(
    BuildContext context,
    accountName,
    referenceID,
    generatorID,
  ) async {
    if (accountName == "Generator") {
      _type = "generator";
      _refType = "Complaint";
      _refId = referenceID;
    } else {
      _type = "account";
      _refType = "Account";
      _refId = referenceID;
    }
    try {
      var homeProvider = Provider.of<HomescreenNotifier>(
        context,
        listen: false,
      );
      // print("${type}");
      final data = await ApiCalling.LoadContactsTechnicianAPI(
        homeProvider.empId,
        homeProvider.session,
        _type,
        generatorID,
        _refId,
      );

      if (data != null) {
        if (data.sessionExists == 1) {
          if (data.error == 0) {
            _contacts_drop_down = data.contacts!;
            _payment_mode_drop_down = data.paymentModeList!;
            if (_selectContact != null &&
                !_contacts_drop_down.contains(_selectContact)) {
              _selectContact = null;
              _contact = "";
              _contactID = "";
            }

            if (_selectPaymentModeList != null &&
                !_payment_mode_drop_down.contains(_selectPaymentModeList)) {
              _selectPaymentModeList = null;
              _PaymentMode = "";
              _paymentModeID = "";
            }

            Amountcontroller.clear();
            Referencecontroller.clear();
            _image = null;
            _imageName = null;
            _image_picked = 0;

            resetErrors();
            notifyListeners();
          } else {}
        } else {
          // SharedpreferencesService().clearPreferences();
          // Navigator.push(
          //   context,
          //   MaterialPageRoute(builder: (context) => Splash()),
          // );
        }
      }
    } on Error catch (e) {
      debugPrint(e.toString());
    }
  }

  bool _isPaymentUpdating = false;
  bool get isPaymentUpdating => _isPaymentUpdating;

  set isPaymentUpdating(bool value) {
    _isPaymentUpdating = value;
    notifyListeners();
  }

  Future<void> PaymentUpdateAPI(
      BuildContext context,
      reference,
      amount,
      ) async {
    if (_isPaymentUpdating) return; // 🛑 prevent re-tap
    _isPaymentUpdating = true;
    notifyListeners();

    try {
      if (!validateSubmit(context)) {
        _isPaymentUpdating = false;
        notifyListeners();
        return;
      }

      var homeProvider = Provider.of<HomescreenNotifier>(context, listen: false);
      final data = await ApiCalling.TechnicianUpdatepaymentAPI(
        homeProvider.empId,
        homeProvider.session,
        _refType,
        _refId,
        _paymentModeID,
        reference,
        amount,
        _contact,
        _contactID,
        _image,
      );

      if (data != null) {
        if (data.sessionExists == 1 && data.error == 0) {
          _CollectionId = data.paymentCollectionId ?? 0;
          notifyListeners();

          Future.delayed(const Duration(milliseconds: 200), () {
            if (_CollectionId != 0 && context.mounted) {
              showOTPSheetSheet(context);
            }
          });
        } else if (context.mounted) {
          toast(context, data.message ?? "Payment update failed");
        }
      } else {
        if (context.mounted) toast(context, "No response from server");
      }
    } catch (e, s) {
      debugPrint("💥 PaymentUpdateAPI error: $e\n$s");
      if (context.mounted) toast(context, "Something went wrong");
    } finally {
      _isPaymentUpdating = false;
      notifyListeners();
    }
  }


  bool _isOtpProcessing = false;
  bool get isOtpProcessing => _isOtpProcessing;

  set isOtpProcessing(bool value) {
    _isOtpProcessing = value;
    notifyListeners();
  }


  Future<void> showOTPSheetSheet(BuildContext context) {
    return showModalBottomSheet(
      useSafeArea: true,
      isDismissible: true,
      isScrollControlled: true,
      showDragHandle: true,
      backgroundColor: Colors.white,
      enableDrag: true,
      context: context,
      builder: (context) {
        return StatefulBuilder(
          builder: (context, setState) {
            return SafeArea(
              child: Padding(
                padding: EdgeInsets.only(
                  bottom:
                      MediaQuery.of(
                        context,
                      ).viewInsets.bottom, // This handles keyboard
                ),
                child: Container(
                  margin: EdgeInsets.only(
                    bottom: 15,
                    left: 15,
                    right: 15,
                    top: 10,
                  ),

                  child: SingleChildScrollView(
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      mainAxisSize: MainAxisSize.min,
                      children: [
                        Align(
                          alignment: Alignment.center,
                          child: Text(
                            "Enter OTP",
                            style: TextStyle(
                              color: AppColors.app_blue,
                              fontSize: 16,
                            ),
                          ),
                        ),
                        SizedBox(height: 15),
                        Column(
                          children: [
                            Container(
                              alignment: Alignment.center,

                              height: 50,
                              margin: EdgeInsets.only(left: 5.0, right: 5.0),
                              child: PinCodeTextField(
                                appContext: context,
                                pastedTextStyle: TextStyle(
                                  fontWeight: FontWeight.bold,
                                ),
                                length: 4,
                                blinkWhenObscuring: true,

                                animationType: AnimationType.fade,
                                // validator: (v) {
                                //   if (v!.length < 3) {
                                //     return "I'm from validator";
                                //   } else {
                                //     return null;
                                //   }
                                // },
                                pinTheme: PinTheme(
                                  shape: PinCodeFieldShape.underline,
                                  borderRadius: BorderRadius.circular(16),
                                  fieldHeight: 60,
                                  fieldWidth: 60,
                                  activeFillColor: AppColors.text_field_color,
                                  activeColor: AppColors.app_blue,
                                  selectedColor: AppColors.text_field_color,
                                  selectedFillColor: AppColors.text_field_color,
                                  inactiveFillColor: AppColors.text_field_color,
                                  inactiveColor: AppColors.text_field_color,
                                  fieldOuterPadding: EdgeInsets.only(
                                    left: 5,
                                    right: 5,
                                  ),
                                  inactiveBorderWidth: 0,
                                  activeBorderWidth: 0.5,
                                ),
                                enableActiveFill: true,
                                keyboardType: TextInputType.number,
                                boxShadows: const [
                                  BoxShadow(
                                    offset: Offset(0, 1),
                                    color: Colors.black12,
                                    blurRadius: 10,
                                  ),
                                ],
                                onCompleted: (String enteredCode) {
                                  enteredOtp = enteredCode;
                                  // clearText = true;
                                  OTPVerifyAPI(context);

                                  debugPrint("Completed");
                                },
                                // onTap: () {
                                //   print("Pressed");
                                // },
                                onChanged: (String enteredCode) {
                                  debugPrint(enteredCode);

                                  enteredOtp = enteredCode;
                                },
                                onSubmitted: (String enteredCode) {
                                  enteredOtp = enteredCode;
                                  // clearText = true;
                                  // Verify_otp();
                                },
                                enablePinAutofill: true,
                                useExternalAutoFillGroup: true,
                                beforeTextPaste: (text) {
                                  debugPrint("Allowing to paste $text");
                                  //if you return true then it will show the paste confirmation dialog. Otherwise if false, then nothing will happen.
                                  //but you can show anything you want here, like your pop up saying wrong paste format or etc
                                  return true;
                                },
                              ),
                            ),
                            SizedBox(height: 15),
                            Container(
                              alignment: Alignment.center,
                              height: 45,
                              margin: EdgeInsets.only(
                                left: 5.0,
                                right: 5.0,
                                top: 5.0,
                                bottom: 5.0,
                              ),
                              child: InkResponse(
                                onTap: () {
                                  ResendOtpAPI(context);
                                },
                                child: Center(
                                  child: Text(
                                    "Resend",
                                    style: TextStyle(
                                      fontWeight: FontWeight.w300,
                                    ),
                                  ),
                                ),
                              ),
                            ),

                            InkResponse(
                              onTap: () {
                                Navigator.of(context).pop(false);
                                OTPVerifyAPI(context);
                              },
                              child: Container(
                                alignment: Alignment.center,
                                height: 45,
                                margin: EdgeInsets.only(
                                  left: 5.0,
                                  right: 5.0,
                                  top: 5.0,
                                  bottom: 5.0,
                                ),
                                decoration: BoxDecoration(
                                  color: AppColors.app_blue, //1487C9
                                  borderRadius: BorderRadius.circular(15.0),
                                ),
                                child: Center(
                                  child: Text(
                                    "Submit",
                                    textAlign: TextAlign.center,
                                    style: TextStyle(
                                      fontSize: 15,
                                      fontFamily: "JakartaMedium",
                                      color: Colors.white,
                                    ),
                                  ),
                                ),
                              ),
                            ),
                          ],
                        ),
                      ],
                    ),
                  ),
                ),
              ),
            );
          },
        );
      },
    );
  }

  bool validateSubmit(context) {
    selectContactError = null;
    selectPaymentError = null;
    selectAmountError = null;
    ReferenceError = null;
    imageError = null;
    bool isValid = true;
    print("clickedw");

    if (_selectContact == null || _contactID.isEmpty) {
      selectContactError = "Please Select Contact";
      isValid = false;
    }

    if (_selectPaymentModeList == null) {
      selectPaymentError = "Please Select Payment Type";
      isValid = false;
    }
    if (Amountcontroller.text.trim().isEmpty) {
      selectAmountError = "Please Enter Amount";
      isValid = false;
    }
    if (Referencecontroller.text.trim().isEmpty) {
      ReferenceError = "Please Enter Reference Number";
      isValid = false;
    }
    if (_image_picked == 0) {
      imageError = "Please add attachment";
      isValid = false;
    }
    notifyListeners();
    return isValid;
  }

  bool _isResendingOtp = false;
  bool get isResendingOtp => _isResendingOtp;

  bool _isVerifyingOtp = false;
  bool get isVerifyingOtp => _isVerifyingOtp;

  void setResendingOtp(bool value) {
    print("🔄 setResendingOtp: $_isResendingOtp → $value");
    _isResendingOtp = value;
    notifyListeners();
  }

  void setVerifyingOtp(bool value) {
    print("🔄 setVerifyingOtp: $_isVerifyingOtp → $value");
    _isVerifyingOtp = value;
    notifyListeners();
  }

  Future<void> OTPVerifyAPI(BuildContext context) async {
    if (_isVerifyingOtp) return;

    print("🎯 OTPVerifyAPI STARTED");
    setVerifyingOtp(true);

    try {
      var homeProvider = Provider.of<HomescreenNotifier>(context, listen: false);
      final data = await ApiCalling.TechnicianPaymentOTPValidateAPI(
        homeProvider.empId,
        homeProvider.session,
        _CollectionId,
        _enteredOtp,
      );

      print("📡 OTP API Response: ${data?.error} - ${data?.message}");

      if (data != null && data.sessionExists == 1) {
        if (data.error == 0) {
          print("✅ OTP SUCCESS");
          toast(context, "✅ ${data.message}");

          // Keep the loading visible for success feedback
          await Future.delayed(const Duration(milliseconds: 1000));

          // Reset data
          _selectContact = null;
          Amountcontroller.clear();
          Referencecontroller.clear();
          notifyListeners();

          // Only close the sheet after showing success
          if (context.mounted && Navigator.canPop(context)) {
            print("🚪 Closing sheet on success");
            Navigator.pop(context, true);
          }
        } else {
          print("❌ OTP ERROR: ${data.message}");
          toast(context, "❌ ${data.message}");
          // Don't close the sheet - let user try again
        }
      } else {
        print("❌ API ERROR: Null response or session issue");
        toast(context, "Something went wrong");
      }
    } catch (e) {
      print("💥 OTP EXCEPTION: $e");
      toast(context, "Something went wrong");
    } finally {
      print("🏁 OTPVerifyAPI COMPLETED");
      setVerifyingOtp(false);
    }
  }

  Future<void> ResendOtpAPI(BuildContext context) async {
    if (_isResendingOtp) return;

    print("🎯 ResendOtpAPI STARTED");
    setResendingOtp(true);

    try {
      var homeProvider = Provider.of<HomescreenNotifier>(context, listen: false);
      final data = await ApiCalling.TechnicianPaymentOTPResendAPI(
        homeProvider.empId,
        homeProvider.session,
        _CollectionId,
      );

      print("📡 Resend API Response: ${data?.message}");

      if (data != null && data.sessionExists == 1) {
        toast(context, data.message ?? "OTP resent successfully");
      } else {
        toast(context, "Failed to resend OTP");
      }
    } catch (e) {
      print("💥 Resend EXCEPTION: $e");
      toast(context, "Something went wrong");
    } finally {
      print("🏁 ResendOtpAPI COMPLETED");
      setResendingOtp(false);
    }
  }

  imgFromCamera(context, reference, amount) async {
    // Capture a photo
    try {
      final XFile? galleryImage = await _picker.pickImage(
        source: ImageSource.camera,
        imageQuality: 50,
      );
      debugPrint("added");

      _image = File(galleryImage!.path);
      _imageName = File(galleryImage.name);
      _image_picked = 1;
      imageError = null;
      notifyListeners();
    } catch (e) {
      debugPrint("mmmm: ${e.toString()}");
    }
  }

  imgFromGallery(context, reference, amount) async {
    // Pick an image
    try {
      final XFile? galleryImage = await _picker.pickImage(
        source: ImageSource.gallery,
      );
      final bytes = (await galleryImage?.readAsBytes())?.lengthInBytes;
      final kb = bytes! / 1024;
      final mb = kb / 1024;

      debugPrint("Jenny: bytes:$bytes, kb:$kb, mb: $mb");

      _image = File(galleryImage!.path);
      _imageName = File(galleryImage.name);

      _image_picked = 1;
      imageError = null;
      notifyListeners();
    } catch (e) {
      debugPrint("mmmm: ${e.toString()}");
    }
  }

  bool CheckValidations(BuildContext context, reference, amount) {
    bool isValid = true;
    if (_contactID == "") {
      toast(context, "Select Phone Number");
      isValid = false;
    }
    if (_paymentModeID == "") {
      toast(context, "Select Payment Mode");
      isValid = false;
    }
    if (amount.isEmpty) {
      toast(context, "Enter Amount");
      isValid = false;
    }
    if (_image == "" || _image == null || _image_picked == 0) {
      toast(context, "Select Attachment");
      isValid = false;
    }
    notifyListeners();
    return isValid;
  }

  String _saveAgainst = "";
  String _genId = "";
  String _accountId = "";

  String get saveAgainst => _saveAgainst;

  String get genId => _genId;

  String get accountId => _accountId;

  set saveAgainst(value) {
    _saveAgainst = value;
    notifyListeners();
  }

  set genId(value) {
    _genId = value;
    notifyListeners();
  }

  set accountId(value) {
    _accountId = value;
  }

  Future<void> AddContactAPIFunction(
    BuildContext context,
    actName,
    generatorID,
    accountName,
    referenceID,
    genId,
  ) async {
    if (actName == "Generator") {
      _saveAgainst = "generator";
      _genId = generatorID;
    } else {
      _saveAgainst = "account";
      _accountId = generatorID;
    }
    notifyListeners();
    if (!validAddContact(context)) {
      return;
    }
    try {
      var homeProvider = Provider.of<HomescreenNotifier>(
        context,
        listen: false,
      );
      final data = await ApiCalling.AddContactAPI(
        homeProvider.empId,
        homeProvider.session,
        _genId,
        nameController.text,
        designationController.text,
        mobController.text,
        altMobController.text,
        telController.text,
        emailController.text,
        _saveAgainst,
        _accountId,
      );

      if (data != null) {
        if (data.sessionExists == 1) {
          if (data.error == 0) {
            toast(context, "Added Successfully");
            resetAddContect();
            LoadNumbersAPI(context, _saveAgainst, referenceID, genId);
            Navigator.pop(context, true);
          } else if (data.error == 1) {
            toast(context, data.message);
          }
        } else {
          // SharedpreferencesService().clearPreferences();
          // Navigator.push(
          //     context,
          //     MaterialPageRoute(
          //         builder: (context) => Splash()));
        }
      }
    } on Error catch (e) {
      print(e.toString());
    }
  }

  void resetErrors() {
    nameError = null;
    designationError = null;
    mobError = null;
    altMobError = null;
    telError = null;
    emailError = null;
    selectContactError = null;
    selectPaymentError = null;
    selectAmountError = null;
    ReferenceError = null;
    imageError = null;
    notifyListeners();
  }


  resetAddContect() {
    Amountcontroller.clear();
    Referencecontroller.clear();
    nameController.clear();
    designationController.clear();
    mobController.clear();
    altMobController.clear();
    telController.clear();
    emailController.clear();
    nameError = null;
    designationError = null;
    mobError = null;
    altMobError = null;
    telError = null;
    emailError = null;
    notifyListeners();
  }

  bool validAddContact(context) {
    bool isValid = true;

    nameError = null;
    designationError = null;
    mobError = null;
    altMobError = null;
    telError = null;
    emailError = null;

    if (nameController.text.trim().toString().isEmpty) {
      nameError = "Please Enter Name";
      isValid = false;
    }
    if (mobController.text.trim().toString().isEmpty) {
      mobError = "Please Enter Mobile Number";
      isValid = false;
    }
    notifyListeners();
    return isValid;
  }
}