import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import '../../core/app_colors.dart';
import '../../core/app_theme.dart';
import '../../widgets/service_package_card.dart';

class ServicePackageDetailPage extends ConsumerWidget {
  final String packageId;
  const ServicePackageDetailPage({super.key, required this.packageId});

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final package = servicePackages.where((p) => p.id == packageId).firstOrNull;
    if (package == null) {
      return GradientScaffold(
        appBar: AppBar(title: const Text('服务包详情')),
        body: const Center(child: Text('未找到该服务包')),
      );
    }

    return GradientScaffold(
      appBar: AppBar(
        title: Text(package.title, style: const TextStyle(fontSize: 19)),
        centerTitle: true,
      ),
      body: SingleChildScrollView(
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            // 头部卡片
            Container(
              width: double.infinity,
              margin: const EdgeInsets.fromLTRB(16, 16, 16, 0),
              padding: const EdgeInsets.all(20),
              decoration: BoxDecoration(
                gradient: LinearGradient(
                  colors: [
                    package.headerColor,
                    package.headerColor.withAlpha(180),
                  ],
                  begin: Alignment.topLeft,
                  end: Alignment.bottomRight,
                ),
                borderRadius: BorderRadius.circular(20),
                boxShadow: AppColors.cardShadow,
              ),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  Container(
                    padding: const EdgeInsets.symmetric(
                      horizontal: 10,
                      vertical: 4,
                    ),
                    decoration: BoxDecoration(
                      color: Colors.white.withAlpha(40),
                      borderRadius: BorderRadius.circular(6),
                    ),
                    child: const Text(
                      'VIP 产品权益',
                      style: TextStyle(
                        fontSize: 15,
                        color: Colors.white,
                        fontWeight: FontWeight.w600,
                      ),
                    ),
                  ),
                  const SizedBox(height: 12),
                  Text(
                    package.title,
                    style: const TextStyle(
                      fontSize: 25,
                      fontWeight: FontWeight.w700,
                      color: Colors.white,
                    ),
                  ),
                  const SizedBox(height: 8),
                  Text(
                    package.subtitle,
                    style: TextStyle(
                      fontSize: 17,
                      color: Colors.white.withAlpha(200),
                    ),
                  ),
                ],
              ),
            ),
            // 服务图标
            Padding(
              padding: const EdgeInsets.all(20),
              child: Wrap(
                spacing: 16,
                runSpacing: 16,
                children: package.services
                    .map(
                      (s) => SizedBox(
                        width: (MediaQuery.of(context).size.width - 72) / 4,
                        child: Column(
                          mainAxisSize: MainAxisSize.min,
                          children: [
                            Container(
                              width: 48,
                              height: 48,
                              decoration: BoxDecoration(
                                color: AppTheme.primaryLight,
                                borderRadius: BorderRadius.circular(14),
                              ),
                              child: Icon(
                                s.icon,
                                size: 25,
                                color: AppTheme.primary,
                              ),
                            ),
                            const SizedBox(height: 6),
                            Text(
                              s.label,
                              style: const TextStyle(
                                fontSize: 15,
                                color: AppTheme.textSub,
                              ),
                              textAlign: TextAlign.center,
                            ),
                          ],
                        ),
                      ),
                    )
                    .toList(),
              ),
            ),
            // 适用人群
            _Section(
              title: '适用人群',
              child: Text(
                package.targetAudience,
                style: const TextStyle(
                  fontSize: 17,
                  color: AppTheme.textSub,
                  height: 1.6,
                ),
              ),
            ),
            // 详细说明
            ...package.detailSections.map(
              (s) => _Section(
                title: s.title,
                child: Text(
                  s.content,
                  style: const TextStyle(
                    fontSize: 17,
                    color: AppTheme.textSub,
                    height: 1.6,
                  ),
                ),
              ),
            ),
            const SizedBox(height: 40),
          ],
        ),
      ),
    );
  }
}

class _Section extends StatelessWidget {
  final String title;
  final Widget child;
  const _Section({required this.title, required this.child});

  @override
  Widget build(BuildContext context) {
    return Container(
      width: double.infinity,
      margin: const EdgeInsets.fromLTRB(16, 16, 16, 0),
      padding: const EdgeInsets.all(16),
      decoration: BoxDecoration(
        color: Colors.white,
        borderRadius: BorderRadius.circular(16),
        border: Border.all(color: AppColors.border),
        boxShadow: AppColors.cardShadowLight,
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Text(
            title,
            style: const TextStyle(
              fontSize: 19,
              fontWeight: FontWeight.w600,
              color: AppTheme.text,
            ),
          ),
          const SizedBox(height: 10),
          child,
        ],
      ),
    );
  }
}