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

class StopSingleChequeScreen extends StatefulWidget {
  final User selectedAccount;
  final String date;
  final String instrType;
  final String fromCheque;
  final String toCheque;

  const StopSingleChequeScreen(
      {super.key,
      required this.selectedAccount,
      required this.date,
      required this.instrType,
      required this.fromCheque,
      required this.toCheque});

  @override
  State<StopSingleChequeScreen> createState() => _StopSingleChequeScreenState();
}

class _StopSingleChequeScreenState extends State<StopSingleChequeScreen> {
  final _formKey = GlobalKey<FormState>();
  final _stopFromChequeNoController = TextEditingController();
  final _stopIssueDateController = TextEditingController();
  final _stopExpiryDateController = TextEditingController();
  final _stopAmountController = TextEditingController();
  final _stopCommentController = TextEditingController();

  bool _validateChequeNumber() {
    final value = _stopFromChequeNoController.text;
    if (value.isEmpty) {
      ScaffoldMessenger.of(context).showSnackBar(
        const SnackBar(content: Text('Please enter a cheque number')),
      );
      return false;
    }
    final chequeNumber = int.tryParse(value);
    final fromCheque = int.tryParse(widget.fromCheque);
    final toCheque = int.tryParse(widget.toCheque);
    if (chequeNumber == null || fromCheque == null || toCheque == null) {
      ScaffoldMessenger.of(context).showSnackBar(
        const SnackBar(content: Text('Invalid cheque number format')),
      );
      return false;
    }
    if (chequeNumber < fromCheque || chequeNumber > toCheque) {
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(
            content: Text(
                'Cheque number must be between ${widget.fromCheque} and ${widget.toCheque}')),
      );
      return false;
    }
    return true;
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Stop Single Cheque'),
      ),
      body: Padding(
        padding: const EdgeInsets.all(16.0),
        child: Form(
          key: _formKey,
          child: ListView(
            children: [
              Card(
                elevation: 0,
                margin: const EdgeInsets.symmetric(vertical: 8.0),
                child: ListTile(
                  leading: Image.asset(
                    'assets/images/logo.png',
                    width: 40,
                    height: 40,
                  ),
                  title: Text(widget.selectedAccount.accountNo!),
                  subtitle: const Text("Account Number"),
                ),
              ),
              const SizedBox(height: 24),
              TextFormField(
                controller: _stopFromChequeNoController,
                decoration: const InputDecoration(
                  labelText: 'Cheque Number',
                  border: OutlineInputBorder(),
                ),
                keyboardType: TextInputType.number,
                validator: (value) {
                  // This validator will only return null or empty string to allow SnackBar to display
                  if (value == null || value.isEmpty) {
                    return ''; // Return empty string to trigger error state without message
                  }
                  final chequeNumber = int.tryParse(value);
                  final fromCheque = int.tryParse(widget.fromCheque);
                  final toCheque = int.tryParse(widget.toCheque);
                  if (chequeNumber == null ||
                      fromCheque == null ||
                      toCheque == null) {
                    return '';
                  }
                  if (chequeNumber < fromCheque || chequeNumber > toCheque) {
                    return '';
                  }
                  return null;
                },
              ),
              const SizedBox(height: 16),
              TextFormField(
                initialValue: widget.instrType,
                readOnly: true,
                decoration: const InputDecoration(
                  labelText: 'Instrument Type',
                  border: OutlineInputBorder(),
                ),
              ),
              const SizedBox(height: 16),
              TextFormField(
                controller: _stopIssueDateController,
                decoration: const InputDecoration(
                  labelText: 'Stop Issue Date',
                  border: OutlineInputBorder(),
                ),
                keyboardType: TextInputType.datetime,
              ),
              const SizedBox(height: 16),
              TextFormField(
                controller: _stopExpiryDateController,
                decoration: const InputDecoration(
                  labelText: 'Stop Expiry Date',
                  border: OutlineInputBorder(),
                ),
                keyboardType: TextInputType.datetime,
              ),
              const SizedBox(height: 16),
              TextFormField(
                controller: _stopAmountController,
                decoration: const InputDecoration(
                  labelText: 'Stop Amount',
                  border: OutlineInputBorder(),
                ),
                keyboardType: TextInputType.number,
              ),
              const SizedBox(height: 16),
              TextFormField(
                controller: _stopCommentController,
                decoration: const InputDecoration(
                  labelText: 'Stop Comment',
                  border: OutlineInputBorder(),
                ),
              ),
              const SizedBox(height: 16),
              TextFormField(
                initialValue: widget.date,
                readOnly: true,
                decoration: const InputDecoration(
                  labelText: 'Chequebook Issue Date',
                  border: OutlineInputBorder(),
                ),
              ),
              const SizedBox(height: 32),
              ElevatedButton(
                onPressed: () {
                  if (_formKey.currentState!.validate() && _validateChequeNumber()) {
                    // TODO: Implement stop single cheque logic
                  }
                },
                child: const Text('Stop Cheque'),
              ),
            ],
          ),
        ),
      ),
    );
  }
}