import 'package:flutter/material.dart';
import 'package:get/get.dart';

class NumpadNominalWidget extends StatelessWidget {
  final void Function(String key) onKey;
  final VoidCallback onSimpan;
  final TextEditingController displayController;

  const NumpadNominalWidget({
    super.key,
    required this.onKey,
    required this.onSimpan,
    required this.displayController,
  });

  static void show(
    BuildContext context, {
    required TextEditingController controller,
    required void Function(String key) onKey,
    required VoidCallback onSimpan,
  }) {
    showModalBottomSheet(
      context: context,
      backgroundColor: Colors.white,
      isScrollControlled: true,
      shape: const RoundedRectangleBorder(
        borderRadius: BorderRadius.vertical(top: Radius.circular(24)),
      ),
      builder: (_) => NumpadNominalWidget(
        displayController: controller,
        onKey: onKey,
        onSimpan: onSimpan,
      ),
    );
  }

  String _formatDisplay(String raw) {
    if (raw.isEmpty) return 'Rp. 0';
    return 'Rp. $raw';
  }

  @override
  Widget build(BuildContext context) {
    final keys = ['1', '2', '3', '4', '5', '6', '7', '8', '9', '.', '0', 'del'];

    return SingleChildScrollView(
      padding: EdgeInsets.fromLTRB(
        16,
        12,
        16,
        MediaQuery.of(context).viewInsets.bottom + 24,
      ),
      child: Column(
        mainAxisSize: MainAxisSize.min,
        children: [
          Container(
            width: 40,
            height: 4,
            margin: const EdgeInsets.only(bottom: 12),
            decoration: BoxDecoration(
              color: Colors.grey.shade300,
              borderRadius: BorderRadius.circular(2),
            ),
          ),
          ValueListenableBuilder<TextEditingValue>(
            valueListenable: displayController,
            builder: (_, value, __) {
              return Container(
                width: double.infinity,
                padding: const EdgeInsets.symmetric(
                  horizontal: 16,
                  vertical: 12,
                ),
                margin: const EdgeInsets.only(bottom: 12),
                decoration: BoxDecoration(
                  color: const Color(0xFFF2F2F2),
                  borderRadius: BorderRadius.circular(12),
                ),
                child: RichText(
                  textAlign: TextAlign.center,
                  text: TextSpan(
                    children: [
                      const TextSpan(
                        text: 'Rp. ',
                        style: TextStyle(
                          fontSize: 24,
                          fontWeight: FontWeight.bold,
                          color: Colors.black87,
                          letterSpacing: 1,
                        ),
                      ),
                      TextSpan(
                        text: value.text.isEmpty ? '0' : value.text,
                        style: const TextStyle(
                          fontSize: 24,
                          fontWeight: FontWeight.bold,
                          color: Colors.black87,
                          letterSpacing: 2,
                        ),
                      ),
                    ],
                  ),
                ),
              );
            },
          ),
          GridView.builder(
            shrinkWrap: true,
            physics: const NeverScrollableScrollPhysics(),
            itemCount: keys.length,
            gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
              crossAxisCount: 3,
              mainAxisSpacing: 8,
              crossAxisSpacing: 8,
              childAspectRatio: 1.6,
            ),
            itemBuilder: (_, i) {
              final key = keys[i];
              return GestureDetector(
                onTap: () => onKey(key),
                child: Container(
                  decoration: const BoxDecoration(
                    color: Color(0xFFF2F2F2),
                    shape: BoxShape.circle,
                  ),
                  child: Center(
                    child: key == 'del'
                        ? const Icon(
                            Icons.backspace_outlined,
                            color: Colors.black87,
                            size: 20,
                          )
                        : Text(
                            key,
                            style: const TextStyle(
                              fontSize: 20,
                              fontWeight: FontWeight.w600,
                              color: Colors.black87,
                            ),
                          ),
                  ),
                ),
              );
            },
          ),
          const SizedBox(height: 12),
          GestureDetector(
            onTap: onSimpan,
            child: Container(
              width: double.infinity,
              padding: const EdgeInsets.symmetric(vertical: 14),
              decoration: BoxDecoration(
                color: const Color(0xFF5B9BD5),
                borderRadius: BorderRadius.circular(12),
              ),
              child: const Center(
                child: Text(
                  'Simpan',
                  style: TextStyle(
                    color: Colors.white,
                    fontWeight: FontWeight.bold,
                    fontSize: 16,
                  ),
                ),
              ),
            ),
          ),
        ],
      ),
    );
  }
}