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

/// 资产卡片组件 - 用于显示资产总览
///
/// 设计规则 ("The Kinetic Vault"):
/// - 渐变背景: Neon Blue → Electric Purple
/// - 圆角: xl (16px)
/// - 无边框，使用渐变层次
/// - 微妙阴影: 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;

  /// 默认渐变色 - Neon Blue → Electric Purple
  static LinearGradient defaultGradientBuilder(bool isDark) => LinearGradient(
    colors: isDark
        ? [AppColorScheme.darkPrimary, AppColorScheme.darkSecondary]
        : [AppColorScheme.lightPrimary, AppColorScheme.lightSecondary],
    begin: Alignment.topLeft,
    end: Alignment.bottomRight,
  );

  /// 翡翠渐变 - 用于盈利展示（主题感知）
  static LinearGradient getEmeraldGradient(bool isDark) => LinearGradient(
    colors: isDark
        ? [AppColorScheme.darkTertiary, const Color(0xFF7de8b8)]
        : [AppColorScheme.lightTertiary, const Color(0xFF00c987)],
    begin: Alignment.topLeft,
    end: Alignment.bottomRight,
  );

  const AssetCard({
    super.key,
    this.title = '总资产',
    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 = Theme.of(context).colorScheme;
    final isDark = Theme.of(context).brightness == Brightness.dark;
    final cardGradient = gradient ?? defaultGradientBuilder(isDark);

    // 主题感知颜色 - 在渐变背景上使用 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: [
            // 标题行
            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),
            // 余额 - 大标题
            Text(
              balance,
              style: theme.textTheme.h1.copyWith(
                fontWeight: FontWeight.bold,
                color: primaryTextColor,
                fontSize: 32,
              ),
            ),
            // 盈亏信息
            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(
                    '盈亏: $profit',
                    style: theme.textTheme.small.copyWith(color: secondaryTextColor),
                  ),
                ],
              ),
            ],
            // 子项
            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,
          ),
        ),
      ],
    );
  }
}

/// 资产子项
class AssetItem {
  final String label;
  final String value;

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

/// 简洁资产卡片 - 用于列表中显示
///
/// 设计规则:
/// - 使用 surface 层次而非边框
/// - 圆角: xl (16px)
/// - 涨跌标签: 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 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: getChangeBackgroundColor(isValueUp),
                  borderRadius: BorderRadius.circular(AppRadius.sm),
                ),
                child: Text(
                  change!,
                  style: TextStyle(
                    color: getChangeColor(isValueUp),
                    fontWeight: FontWeight.w600,
                  ),
                ),
              ),
          ],
        ),
      ),
    );
  }
}
