import 'package:flutter/material.dart';
import 'package:shadcn_ui/shadcn_ui.dart';
import 'package:flutter_animate/flutter_animate.dart';
import '../../core/theme/app_spacing.dart';
import '../../core/theme/app_theme_extension.dart';

/// 資產卡片組件 - 用於顯示資產總覽
///
/// 設計規則 ("The Kinetic Vault"):
/// - 漸變背景: Neon Blue → Electric Purple
/// - 圓角: xl (16px)
/// - 無邊框，使用漸變層次
/// - 微妙陰影: 10% black, blur 10px
class AssetCard extends StatelessWidget {
  final String title;
  final String balance;
  final String? subtitle;
  final String? profit;
  final bool? isProfit;
  final List<AssetItem>? items;
  final Gradient? gradient;
  final VoidCallback? onTap;

  const AssetCard({
    super.key,
    this.title = '總資產',
    required this.balance,
    this.subtitle,
    this.profit,
    this.isProfit,
    this.items,
    this.gradient,
    this.onTap,
  });

  @override
  Widget build(BuildContext context) {
    final theme = ShadTheme.of(context);
    final colorScheme = context.colors;
    final appColors = context.appColors;
    final cardGradient = gradient ?? appColors.assetGradient;

    // 主題感知顏色 - 在漸變背景上使用 onPrimary
    final primaryTextColor = colorScheme.onPrimary;
    final secondaryTextColor = colorScheme.onPrimary.withValues(alpha: 0.7);

    return GestureDetector(
      onTap: onTap,
      child: Container(
        width: double.infinity,
        padding: const EdgeInsets.all(AppSpacing.lg),
        decoration: BoxDecoration(
          gradient: cardGradient,
          borderRadius: BorderRadius.circular(AppRadius.xl),
          boxShadow: [
            BoxShadow(
              color: colorScheme.onSurface.withValues(alpha: 0.1),
              blurRadius: 10,
              offset: const Offset(0, 4),
            ),
          ],
        ),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            // 標題行
            Row(
              children: [
                Text(
                  title,
                  style: theme.textTheme.small.copyWith(color: secondaryTextColor),
                ),
                const Spacer(),
                if (onTap != null)
                  Icon(
                    LucideIcons.chevronRight,
                    color: secondaryTextColor,
                    size: 18,
                  ),
              ],
            ),
            const SizedBox(height: AppSpacing.sm),
            // 餘額 - 大標題
            Text(
              balance,
              style: theme.textTheme.h1.copyWith(
                fontWeight: FontWeight.bold,
                color: primaryTextColor,
                fontSize: 20,
              ),
            ),
            // 盈虧信息
            if (profit != null) ...[
              const SizedBox(height: AppSpacing.md),
              Row(
                children: [
                  Icon(
                    isProfit == true ? LucideIcons.trendingUp : LucideIcons.trendingDown,
                    color: secondaryTextColor,
                    size: 16,
                  ),
                  const SizedBox(width: 6),
                  Text(
                    '盈虧: $profit',
                    style: theme.textTheme.small.copyWith(color: secondaryTextColor),
                  ),
                ],
              ),
            ],
            // 子項
            if (items != null && items!.isNotEmpty) ...[
              const SizedBox(height: AppSpacing.lg),
              Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                children: items!.map((item) => _buildItem(item, primaryTextColor, secondaryTextColor)).toList(),
              ),
            ],
          ],
        ),
      ),
    ).animate().fadeIn(duration: 400.ms).slideY(begin: 0.1, end: 0);
  }

  Widget _buildItem(AssetItem item, Color primaryTextColor, Color secondaryTextColor) {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        Text(
          item.label,
          style: TextStyle(fontSize: 12, color: secondaryTextColor),
        ),
        const SizedBox(height: 4),
        Text(
          item.value,
          style: TextStyle(
            fontSize: 18,
            fontWeight: FontWeight.w600,
            color: primaryTextColor,
          ),
        ),
      ],
    );
  }
}

/// 資產子項
class AssetItem {
  final String label;
  final String value;

  const AssetItem({
    required this.label,
    required this.value,
  });
}

/// 簡潔資產卡片 - 用於列表中顯示
///
/// 設計規則:
/// - 使用 surface 層次而非邊框
/// - 圓角: xl (16px)
/// - 漲跌標籤: 15% 透明度背景
class AssetCardCompact extends StatelessWidget {
  final String title;
  final String balance;
  final String? change;
  final bool? isUp;
  final VoidCallback? onTap;

  const AssetCardCompact({
    super.key,
    required this.title,
    required this.balance,
    this.change,
    this.isUp,
    this.onTap,
  });

  @override
  Widget build(BuildContext context) {
    final theme = ShadTheme.of(context);
    final appColors = context.appColors;
    final isValueUp = isUp ?? true;

    return ShadCard(
      padding: const EdgeInsets.all(AppSpacing.md),
      child: InkWell(
        onTap: onTap,
        child: Row(
          children: [
            Expanded(
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  Text(
                    title,
                    style: theme.textTheme.muted,
                  ),
                  const SizedBox(height: 4),
                  Text(
                    balance,
                    style: theme.textTheme.h3.copyWith(
                      fontWeight: FontWeight.bold,
                    ),
                  ),
                ],
              ),
            ),
            if (change != null)
              Container(
                padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 6),
                decoration: BoxDecoration(
                  color: isValueUp ? appColors.upBackground : appColors.downBackground,
                  borderRadius: BorderRadius.circular(AppRadius.sm),
                ),
                child: Text(
                  change!,
                  style: TextStyle(
                    color: isValueUp ? appColors.up : appColors.down,
                    fontWeight: FontWeight.w600,
                  ),
                ),
              ),
          ],
        ),
      ),
    );
  }
}