import 'package:flutter/material.dart';
import 'package:sudoku_app/models/sudoku_theme.dart';

class NumberPad extends StatelessWidget {
  final int blockSize;
  final SudokuTheme theme;
  final Map<int, int> numberCounts;
  final int? selectedNumber;
  final Function(int) onNumberTapped;
  final bool isLandscape;

  const NumberPad({
    super.key,
    required this.blockSize,
    required this.theme,
    required this.numberCounts,
    required this.selectedNumber,
    required this.onNumberTapped,
    required this.isLandscape,
  });

  @override
  Widget build(BuildContext context) {
    final int gridSize = blockSize * blockSize;

    List<Widget> numberButtons = List.generate(gridSize, (index) {
      int numberValue = index + 1;
      String numberSymbol = theme.getSymbol(numberValue); 
      bool isSelected = (numberValue == selectedNumber);
      bool isCompleted = (numberCounts[numberValue] ?? 0) >= gridSize;

      Widget button = ElevatedButton(
        style: ElevatedButton.styleFrom(
          backgroundColor: isSelected ? Colors.blue.shade300 : null,
          foregroundColor: isSelected ? Colors.white : null,
          // 🔽 [수정] 패딩을 조절해 버튼을 채움
          padding: const EdgeInsets.all(4.0), 
          // 🔽 [수정] 기본 폰트 크기를 키움 (이모지 등)
          textStyle: const TextStyle(fontSize: 24, fontWeight: FontWeight.bold), 
          shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(4))
        ),
        onPressed: isCompleted
            ? null 
            : () => onNumberTapped(numberValue),
        // 🔽 [수정] Text를 FittedBox로 감싸 기호가 버튼에 꽉 차게 함
        child: FittedBox(
          fit: BoxFit.contain,
          child: Text(numberSymbol),
        ),
      );
      
      if (isLandscape) {
        return Flexible(child: button);
      } else {
        return button;
      }
    });

    if (isLandscape) {
      // --- 가로 모드: Wrap 사용 (버튼이 가로로 흐름) ---
      return Wrap(
        runSpacing: 4.0,
        spacing: 4.0,
        children: numberButtons,
      );
    } else {
      // --- 세로 모드: GridView 사용 (블록 모양) ---
      return GridView.count(
        crossAxisCount: blockSize,
        shrinkWrap: true,
        physics: const NeverScrollableScrollPhysics(),
        padding: EdgeInsets.zero,
        mainAxisSpacing: 4,
        crossAxisSpacing: 4,
        children: numberButtons,
      );
    }
  }
}