import 'package:flutter/material.dart';
import 'package:flutter_svg/svg.dart';
import 'package:intl/intl.dart';
import 'package:material_symbols_icons/material_symbols_icons.dart';

class BlockCardScreen extends StatefulWidget {
  const BlockCardScreen({super.key});

  @override
  State<BlockCardScreen> createState() => _BlockCardScreen();
}

class _BlockCardScreen extends State<BlockCardScreen> {
  final _formKey = GlobalKey<FormState>();
  final _cardController = TextEditingController();
  final _cvvController = TextEditingController();
  final _expiryController = TextEditingController();
  final _phoneController = TextEditingController();

  Future<void> _pickExpiryDate() async {
    final now = DateTime.now();
    final selectedDate = await showDatePicker(
      context: context,
      initialDate: now,
      firstDate: now,
      lastDate: DateTime(now.year + 10),
    );
    if (selectedDate != null) {
      _expiryController.text = DateFormat('dd/MM/yyyy').format(selectedDate);
    }
  }

  void _blockCard() {
    if (_formKey.currentState?.validate() ?? false) {
      // Call your backend logic here

      final snackBar = SnackBar(
        content: const Text('Card has been blocked'),
        action: SnackBarAction(
          label: 'X',
          onPressed: () {
            // Just close the SnackBar
          },
          textColor: Colors.white,
        ),
        backgroundColor: Colors.black,
        behavior: SnackBarBehavior.floating,
      );

      ScaffoldMessenger.of(context).showSnackBar(snackBar);
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        leading: IconButton(
          icon: const Icon(Symbols.arrow_back_ios_new),
          onPressed: () {
            Navigator.pop(context);
          },
        ),
        title: const Text(
          'Block Card',
          style: TextStyle(color: Colors.black, fontWeight: FontWeight.w500),
        ),
        centerTitle: false,
        actions: [
          Padding(
            padding: const EdgeInsets.only(right: 10.0),
            child: CircleAvatar(
              backgroundColor: Colors.grey[200],
              radius: 20,
              child: SvgPicture.asset(
                'assets/images/avatar_male.svg',
                width: 40,
                height: 40,
                fit: BoxFit.cover,
              ),
            ),
          ),
        ],
      ),
      body: Padding(
        padding: const EdgeInsets.all(10.0),
        child: Form(
          key: _formKey,
          child: ListView(
            children: [
              const SizedBox(height: 10),
              TextFormField(
                controller: _cardController,
                decoration: const InputDecoration(
                  labelText: 'Card Number',
                  border: OutlineInputBorder(),
                  isDense: true,
                  filled: true,
                  fillColor: Colors.white,
                  enabledBorder: OutlineInputBorder(
                    borderSide: BorderSide(color: Colors.black),
                  ),
                  focusedBorder: OutlineInputBorder(
                    borderSide: BorderSide(color: Colors.black, width: 2),
                  ),
                ),
                keyboardType: TextInputType.number,
                textInputAction: TextInputAction.next,
                validator: (value) => value != null && value.length == 16
                    ? null
                    : 'Enter valid card number',
              ),
              const SizedBox(height: 24),
              Row(
                children: [
                  Expanded(
                    child: TextFormField(
                      controller: _cvvController,
                      decoration: const InputDecoration(
                        labelText: 'CVV',
                        border: OutlineInputBorder(),
                        isDense: true,
                        filled: true,
                        fillColor: Colors.white,
                        enabledBorder: OutlineInputBorder(
                          borderSide: BorderSide(color: Colors.black),
                        ),
                        focusedBorder: OutlineInputBorder(
                          borderSide: BorderSide(color: Colors.black, width: 2),
                        ),
                      ),
                      keyboardType: TextInputType.number,
                      textInputAction: TextInputAction.next,
                      obscureText: true,
                      validator: (value) => value != null && value.length == 3
                          ? null
                          : 'CVV must be 3 digits',
                    ),
                  ),
                  const SizedBox(width: 16),
                  Expanded(
                    child: TextFormField(
                      controller: _expiryController,
                      readOnly: true,
                      onTap: _pickExpiryDate,
                      decoration: const InputDecoration(
                        labelText: 'Expiry Date',
                        suffixIcon: Icon(Icons.calendar_today),
                        border: OutlineInputBorder(),
                        isDense: true,
                        filled: true,
                        fillColor: Colors.white,
                        enabledBorder: OutlineInputBorder(
                          borderSide: BorderSide(color: Colors.black),
                        ),
                        focusedBorder: OutlineInputBorder(
                          borderSide: BorderSide(color: Colors.black, width: 2),
                        ),
                      ),
                      validator: (value) => value != null && value.isNotEmpty
                          ? null
                          : 'Select expiry date',
                    ),
                  ),
                ],
              ),
              const SizedBox(height: 24),
              TextFormField(
                controller: _phoneController,
                decoration: const InputDecoration(
                  labelText: 'Phone',
                  prefixIcon: Icon(Icons.phone),
                  border: OutlineInputBorder(),
                  isDense: true,
                  filled: true,
                  fillColor: Colors.white,
                  enabledBorder: OutlineInputBorder(
                    borderSide: BorderSide(color: Colors.black),
                  ),
                  focusedBorder: OutlineInputBorder(
                    borderSide: BorderSide(color: Colors.black, width: 2),
                  ),
                ),
                textInputAction: TextInputAction.done,
                keyboardType: TextInputType.phone,
                validator: (value) => value != null && value.length >= 10
                    ? null
                    : 'Enter valid phone number',
              ),
              const SizedBox(height: 45),
              Align(
                alignment: Alignment.center,
                child: SizedBox(
                  width: 250,
                  child: ElevatedButton(
                    onPressed: _blockCard,
                    style: ElevatedButton.styleFrom(
                      shape: const StadiumBorder(),
                      padding: const EdgeInsets.symmetric(vertical: 16),
                      backgroundColor: Colors.blue[900],
                      foregroundColor: Colors.white,
                    ),
                    child: const Text('Block'),
                  ),
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }
}