import 'package:flutter/material.dart';
import 'package:kmobile/data/models/user.dart';
import 'package:kmobile/l10n/app_localizations.dart';

class CreateDepositScreen extends StatefulWidget {
  final User selectedAccount;
  final Map<String, dynamic>? initialData;
  const CreateDepositScreen({
    super.key,
    required this.selectedAccount,
    this.initialData,
  });

  @override
  State<CreateDepositScreen> createState() => _CreateDepositScreenState();
}

class _CreateDepositScreenState extends State<CreateDepositScreen> {
  final _formKey = GlobalKey<FormState>();

  // Controllers
  late final _fromAcctNoController =
      TextEditingController(text: widget.selectedAccount.accountNo.toString());
  late final _cifNoController = TextEditingController(
      text: widget.initialData?['cifNo']?.toString());
  late final _idNoController = TextEditingController(
      text: widget.initialData?['idno']?.toString());
  late final _customerNameController = TextEditingController(
      text: widget.initialData?['customername']?.toString());
  late final _nationalityController = TextEditingController(
      text: widget.initialData?['nationality']?.toString());
  late final _addressLine1Controller = TextEditingController(
      text: widget.initialData?['addressline1']?.toString());
  late final _addressLine2Controller = TextEditingController(
      text: widget.initialData?['addressline2']?.toString());
  late final _pincodeController = TextEditingController(
      text: widget.initialData?['pincode']?.toString());

  late final _productController = TextEditingController();
  late final _typeController = TextEditingController();
  late final _customerCategoryController = TextEditingController();
  late final _termLocationController = TextEditingController();
  late final _currencyController = TextEditingController();
  late final _acctSgmtCodeController = TextEditingController();
  late final _interestPaymentMethodController = TextEditingController();
  late final _taxFileNumberIndicatorController = TextEditingController();
  late final _termLengthController = TextEditingController();
  late final _termBasisController = TextEditingController();
  late final _termValueDepositedController = TextEditingController();
  late final _interestFrequencyController = TextEditingController();
  late final _termDaysController = TextEditingController();
  late final _termMonthsController = TextEditingController();
  late final _termYearsController = TextEditingController();
  late final _nominationRequiredController = TextEditingController();
  late final _printNomineeNameController = TextEditingController();

  // RD specific controllers
  late final _rdInstallmentValueController = TextEditingController();
  late final _monthlyRDInstallmentDueDayController = TextEditingController();
  late final _rdInstlFreqController = TextEditingController();

  final Map<String, String> _productOptions = {
    '20': 'Term Deposit',
    '25': 'Fixed Deposit',
    '28': 'Recurring Deposit',
  };

  final Map<String, String> _typeOptions = {
    '01': 'Member',
    '02': 'Non-Member',
    '03': 'Staff',
    '04': 'Govt',
    '05': 'School',
    '06': 'Panchayat',
    '07': 'Trusts',
    '08': 'Municipal Council',
    '09': 'NRO',
    '10': 'Bank',
    '11': 'No Frill',
    '12': 'Special Schemes',
    '13': 'Minor',
  };

  final Map<String, String> _customerCategoryOptions = {
    '1': 'Public Individual',
    '2': 'Societies',
    '3': 'Senior Citizen',
    '5': 'Government',
    '6': 'Local Bodies',
    '7': 'Other',
  };

  final Map<String, String> _termLocationOptions = {
    '10': 'SB/CA',
    '13': '46–90 Days',
    '14': '91–180 Days',
    '15': '180 Days–1 Year',
    '16': '1 Year–<18 Months',
    '20': '18 Months–<2 Years',
    '17': '2–3 Years',
    '18': '3–10 Years',
    '22': 'Above 10 Years',
    '24': 'Dev Kanya Yojna 9+1',
    '25': 'Hazar Dain Lakh Ley Jayain',
  };

  final Map<String, String> _currencyOptions = {
    '1': 'INR',
  };

  final Map<String, String> _acctSgmtCodeOptions = {
    '0706': 'Public Individual',
    '5002': 'Societies',
    '5005': 'Government',
    '5050': 'GL Others',
  };

  final Map<String, String> _interestPaymentMethodOptions = {
    'R': 'Re-invest',
  };

  final Map<String, String> _termBasisOptions = {
    'D': 'Days',
    'M': 'Months',
  };

  final Map<String, String> _interestFrequencyOptions = {
    'M': 'On Maturity / Roll Over',
    '1M': 'Monthly',
    '3M': 'Quarterly',
    '1A': 'Anniversary Monthly',
    '3A': 'Anniversary Quarterly',
  };

  final Map<String, String> _rdInstlFreqOptions = {
    'M': 'Monthly',
  };

  @override
  void dispose() {
    _fromAcctNoController.dispose();
    _cifNoController.dispose();
    _idNoController.dispose();
    _customerNameController.dispose();
    _nationalityController.dispose();
    _addressLine1Controller.dispose();
    _addressLine2Controller.dispose();
    _pincodeController.dispose();
    _productController.dispose();
    _typeController.dispose();
    _customerCategoryController.dispose();
    _termLocationController.dispose();
    _currencyController.dispose();
    _acctSgmtCodeController.dispose();
    _interestPaymentMethodController.dispose();
    _taxFileNumberIndicatorController.dispose();
    _termLengthController.dispose();
    _termBasisController.dispose();
    _termValueDepositedController.dispose();
    _interestFrequencyController.dispose();
    _termDaysController.dispose();
    _termMonthsController.dispose();
    _termYearsController.dispose();
    _nominationRequiredController.dispose();
    _printNomineeNameController.dispose();
    _rdInstallmentValueController.dispose();
    _monthlyRDInstallmentDueDayController.dispose();
    _rdInstlFreqController.dispose();
    super.dispose();
  }

  void _handleCreate() {
    if (_formKey.currentState!.validate()) {
      // Implementation logic goes here
      ScaffoldMessenger.of(context).showSnackBar(
        const SnackBar(content: Text("Processing Deposit Creation...")),
      );
    }
  }

  @override
  Widget build(BuildContext context) {
    final l10n = AppLocalizations.of(context);
    return Scaffold(
      appBar: AppBar(
        title: const Text("Create Deposit"),
      ),
      body: SingleChildScrollView(
        padding: const EdgeInsets.all(16.0),
        child: Form(
          key: _formKey,
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.stretch,
            children: [
              // Tile 1: Customer Info
              Card(
                elevation: 2,
                child: Padding(
                  padding: const EdgeInsets.all(16.0),
                  child: Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                      const Text("Customer Information",
                          style: TextStyle(
                              fontSize: 18, fontWeight: FontWeight.bold)),
                      const SizedBox(height: 16),
                      _buildTextField(_fromAcctNoController, "From Account No",
                          mandatory: true, readOnly: true),
                      _buildTextField(_cifNoController, "CIF No"),
                      _buildTextField(_idNoController, "ID No"),
                      _buildTextField(_customerNameController, "Customer Name"),
                      _buildTextField(_nationalityController, "Nationality"),
                      _buildTextField(_addressLine1Controller, "Address Line 1"),
                      _buildTextField(_addressLine2Controller, "Address Line 2"),
                      _buildTextField(_pincodeController, "Pincode",
                          keyboardType: TextInputType.number),
                    ],
                  ),
                ),
              ),
              const SizedBox(height: 16),
              // Tile 2: Deposit Details
              Card(
                elevation: 2,
                child: Padding(
                  padding: const EdgeInsets.all(16.0),
                  child: Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                      const Text("Deposit Details",
                          style: TextStyle(
                              fontSize: 18, fontWeight: FontWeight.bold)),
                      const SizedBox(height: 16),
                      _buildDropdownField(
                          _productController, "Product", _productOptions,
                          mandatory: true, onChanged: (val) {
                        setState(() {
                          _productController.text = val ?? '';
                        });
                      }),
                      _buildDropdownField(_typeController, "Type", _typeOptions,
                          mandatory: true),
                      _buildDropdownField(_customerCategoryController,
                          "Customer Category", _customerCategoryOptions,
                          mandatory: true),
                      _buildDropdownField(_termLocationController,
                          "Term Location", _termLocationOptions,
                          mandatory: true),
                      _buildDropdownField(
                          _currencyController, "Currency", _currencyOptions,
                          mandatory: true),
                      _buildDropdownField(_acctSgmtCodeController,
                          "Account Segment Code", _acctSgmtCodeOptions,
                          mandatory: true),
                    ],
                  ),
                ),
              ),
              const SizedBox(height: 16),
              // Tile 3: Interest & Term Settings
              Card(
                elevation: 2,
                child: Padding(
                  padding: const EdgeInsets.all(16.0),
                  child: Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                      const Text("Interest & Term Settings",
                          style: TextStyle(
                              fontSize: 18, fontWeight: FontWeight.bold)),
                      const SizedBox(height: 16),
                      _buildDropdownField(_interestPaymentMethodController,
                          "Interest Payment Method", _interestPaymentMethodOptions,
                          mandatory: true),
                      _buildTextField(_taxFileNumberIndicatorController,
                          "Tax File Number Indicator"),
                      _buildTextField(_termLengthController, "Term Length"),
                      _buildDropdownField(
                          _termBasisController, "Term Basis", _termBasisOptions,
                          mandatory: true),
                      _buildTextField(_termValueDepositedController,
                          "Term Value Deposited",
                          keyboardType: TextInputType.number, mandatory: true),
                      _buildDropdownField(_interestFrequencyController,
                          "Interest Frequency", _interestFrequencyOptions),
                      _buildTextField(_termDaysController, "Term Days",
                          keyboardType: TextInputType.number),
                      _buildTextField(_termMonthsController, "Term Months",
                          keyboardType: TextInputType.number),
                      _buildTextField(_termYearsController, "Term Years",
                          keyboardType: TextInputType.number, mandatory: true),
                      _buildTextField(
                          _nominationRequiredController, "Nomination Required"),
                      _buildTextField(
                          _printNomineeNameController, "Print Nominee Name"),
                    ],
                  ),
                ),
              ),
              const SizedBox(height: 16),

              // Tile 4: RD Specific Fields (Conditional)
              if (_productController.text == '28')
                Card(
                  elevation: 2,
                  child: Padding(
                    padding: const EdgeInsets.all(16.0),
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        const Text("Recurring Deposit Settings",
                            style: TextStyle(
                                fontSize: 18, fontWeight: FontWeight.bold)),
                        const SizedBox(height: 16),
                        _buildTextField(_rdInstallmentValueController,
                            "RD Installment Value",
                            keyboardType: TextInputType.number),
                        _buildTextField(_monthlyRDInstallmentDueDayController,
                            "Monthly RD Installment Due Day",
                            keyboardType: TextInputType.number),
                        _buildDropdownField(_rdInstlFreqController,
                            "RD Installment Frequency", _rdInstlFreqOptions),
                      ],
                    ),
                  ),
                ),

              const SizedBox(height: 24),
              ElevatedButton(
                onPressed: _handleCreate,
                style: ElevatedButton.styleFrom(
                  backgroundColor:
                      Theme.of(context).colorScheme.primaryContainer,
                  foregroundColor:
                      Theme.of(context).colorScheme.onPrimaryContainer,
                  padding: const EdgeInsets.symmetric(vertical: 16),
                  elevation: 4,
                  shape: RoundedRectangleBorder(
                    borderRadius: BorderRadius.circular(8),
                  ),
                ),
                child: const Text(
                  "Proceed",
                  style: TextStyle(fontSize: 16, fontWeight: FontWeight.bold),
                ),
              ),
              const SizedBox(height: 32),
            ],
          ),
        ),
      ),
    );
  }

  Widget _buildDropdownField(TextEditingController controller, String label,
      Map<String, String> options,
      {bool readOnly = false,
      bool mandatory = false,
      void Function(String?)? onChanged}) {
    String? currentValue =
        options.containsKey(controller.text) ? controller.text : null;

    return Padding(
      padding: const EdgeInsets.only(bottom: 16.0),
      child: DropdownButtonFormField<String>(
        value: currentValue,
        onChanged: readOnly
            ? null
            : (newValue) {
                if (newValue != null) {
                  setState(() {
                    controller.text = newValue;
                  });
                }
                if (onChanged != null) {
                  onChanged(newValue);
                }
              },
        decoration: InputDecoration(
          labelText: mandatory ? '$label *' : label,
          border: const OutlineInputBorder(),
          contentPadding:
              const EdgeInsets.symmetric(vertical: 16, horizontal: 12),
        ),
        validator: (value) {
          if (mandatory && (value == null || value.isEmpty)) {
            return 'This field is required';
          }
          return null;
        },
        items: options.entries.map((entry) {
          return DropdownMenuItem<String>(
            value: entry.key,
            child: Text(entry.value),
          );
        }).toList(),
      ),
    );
  }

  Widget _buildTextField(TextEditingController controller, String label,
      {TextInputType keyboardType = TextInputType.text,
      bool readOnly = false,
      bool mandatory = false,
      VoidCallback? onTap}) {
    return Padding(
      padding: const EdgeInsets.only(bottom: 16.0),
      child: TextFormField(
        controller: controller,
        readOnly: readOnly || onTap != null,
        onTap: onTap,
        decoration: InputDecoration(
          labelText: mandatory ? '$label *' : label,
          border: const OutlineInputBorder(),
          suffixIcon: onTap != null ? const Icon(Icons.calendar_today) : null,
          contentPadding:
              const EdgeInsets.symmetric(vertical: 16, horizontal: 12),
        ),
        keyboardType: keyboardType,
        validator: (value) {
          if (mandatory && (value == null || value.isEmpty)) {
            return 'This field is required';
          }
          return null;
        },
      ),
    );
  }
}