import 'package:flutter/material.dart';
import 'package:superport/screens/common/theme_shadcn.dart';
import 'package:superport/screens/common/components/shadcn_components.dart';

/// 표준 액션바 위젯
/// 
/// 모든 리스트 화면에서 일관된 액션 버튼 배치와 상태 표시 제공
class StandardActionBar extends StatelessWidget {
  final List<Widget> leftActions;   // 왼쪽 액션 버튼들
  final List<Widget> rightActions;  // 오른쪽 액션 버튼들
  final int? selectedCount;         // 선택된 항목 수
  final int totalCount;              // 전체 항목 수
  final VoidCallback? onRefresh;    // 새로고침 콜백
  final String? statusMessage;      // 추가 상태 메시지

  const StandardActionBar({
    Key? key,
    this.leftActions = const [],
    this.rightActions = const [],
    this.selectedCount,
    required this.totalCount,
    this.onRefresh,
    this.statusMessage,
  }) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Row(
      mainAxisAlignment: MainAxisAlignment.spaceBetween,
      children: [
        // 왼쪽 액션 버튼들
        Row(
          children: [
            ...leftActions.map((action) => Padding(
              padding: const EdgeInsets.only(right: ShadcnTheme.spacing2),
              child: action,
            )),
          ],
        ),

        // 오른쪽 상태 표시 및 액션들
        Row(
          children: [
            // 추가 상태 메시지 (작은 글자 크기로 통일)
            if (statusMessage != null) ...[
              Text(statusMessage!, style: ShadcnTheme.bodySmall),
              const SizedBox(width: ShadcnTheme.spacing3),
            ],

            // 선택된 항목 수 표시
            if (selectedCount != null && selectedCount! > 0) ...[
              Container(
                padding: const EdgeInsets.symmetric(
                  vertical: 8,
                  horizontal: 16,
                ),
                decoration: BoxDecoration(
                  color: ShadcnTheme.primary.withValues(alpha: 0.1),
                  borderRadius: BorderRadius.circular(ShadcnTheme.radiusSm),
                  border: Border.all(color: ShadcnTheme.primary.withValues(alpha: 0.3)),
                ),
                child: Text(
                  '$selectedCount개 선택됨',
                  style: TextStyle(
                    fontWeight: FontWeight.bold,
                    color: ShadcnTheme.primary,
                  ),
                ),
              ),
              const SizedBox(width: ShadcnTheme.spacing3),
            ],

            // 전체 항목 수 표시 (statusMessage에 "총 X개"가 없을 때만 표시)
            if (statusMessage == null || !statusMessage!.contains('총'))
              Container(
                padding: const EdgeInsets.symmetric(
                  vertical: 6,
                  horizontal: 12,
                ),
                decoration: BoxDecoration(
                  color: ShadcnTheme.muted.withValues(alpha: 0.2),
                  borderRadius: BorderRadius.circular(ShadcnTheme.radiusSm),
                ),
                child: Text(
                  '총 $totalCount개',
                  style: ShadcnTheme.bodySmall,
                ),
              ),

            // 새로고침 버튼
            if (onRefresh != null) ...[
              const SizedBox(width: ShadcnTheme.spacing3),
              IconButton(
                icon: const Icon(Icons.refresh),
                onPressed: onRefresh,
                tooltip: '새로고침',
                iconSize: 20,
              ),
            ],

            // 오른쪽 액션 버튼들
            ...rightActions.map((action) => Padding(
              padding: const EdgeInsets.only(left: ShadcnTheme.spacing2),
              child: action,
            )),
          ],
        ),
      ],
    );
  }
}

/// 표준 액션 버튼 그룹
class StandardActionButtons {
  /// 추가 버튼
  static Widget addButton({
    required String text,
    required VoidCallback onPressed,
    IconData icon = Icons.add,
  }) {
    return ShadcnButton(
      text: text,
      onPressed: onPressed,
      variant: ShadcnButtonVariant.primary,
      textColor: Colors.white,
      icon: Icon(icon, size: 16),
    );
  }

  /// 삭제 버튼
  static Widget deleteButton({
    required VoidCallback? onPressed,
    bool enabled = true,
    String text = '삭제',
  }) {
    return ShadcnButton(
      text: text,
      onPressed: enabled ? onPressed : null,
      variant: enabled 
          ? ShadcnButtonVariant.destructive 
          : ShadcnButtonVariant.secondary,
      icon: const Icon(Icons.delete, size: 16),
    );
  }

  /// 엑셀 내보내기 버튼
  static Widget exportButton({
    required VoidCallback onPressed,
    String text = '엑셀 내보내기',
  }) {
    return ShadcnButton(
      text: text,
      onPressed: onPressed,
      variant: ShadcnButtonVariant.secondary,
      icon: const Icon(Icons.download, size: 16),
    );
  }

  /// 엑셀 가져오기 버튼
  static Widget importButton({
    required VoidCallback onPressed,
    String text = '엑셀 가져오기',
  }) {
    return ShadcnButton(
      text: text,
      onPressed: onPressed,
      variant: ShadcnButtonVariant.secondary,
      icon: const Icon(Icons.upload, size: 16),
    );
  }

  /// 새로고침 버튼
  static Widget refreshButton({
    required VoidCallback onPressed,
    String text = '새로고침',
  }) {
    return ShadcnButton(
      text: text,
      onPressed: onPressed,
      variant: ShadcnButtonVariant.secondary,
      icon: const Icon(Icons.refresh, size: 16),
    );
  }

  /// 필터 초기화 버튼
  static Widget clearFiltersButton({
    required VoidCallback onPressed,
    String text = '필터 초기화',
  }) {
    return ShadcnButton(
      text: text,
      onPressed: onPressed,
      variant: ShadcnButtonVariant.ghost,
      icon: const Icon(Icons.clear_all, size: 16),
    );
  }
}

/// 표준 필터 드롭다운
class StandardFilterDropdown<T> extends StatelessWidget {
  final T value;
  final List<DropdownMenuItem<T>> items;
  final ValueChanged<T?> onChanged;
  final String? hint;

  const StandardFilterDropdown({
    Key? key,
    required this.value,
    required this.items,
    required this.onChanged,
    this.hint,
  }) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Container(
      height: 40,
      padding: const EdgeInsets.symmetric(horizontal: 12),
      decoration: BoxDecoration(
        color: ShadcnTheme.card,
        border: Border.all(color: Colors.black),
        borderRadius: BorderRadius.circular(ShadcnTheme.radiusMd),
      ),
      child: DropdownButtonHideUnderline(
        child: DropdownButton<T>(
          value: value,
          items: items,
          onChanged: onChanged,
          hint: hint != null ? Text(hint!) : null,
          style: ShadcnTheme.bodySmall,
          icon: const Icon(Icons.arrow_drop_down, size: 20),
        ),
      ),
    );
  }
}