import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import '../../core/navigation_provider.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 Scaffold(
        appBar: AppBar(title: const Text('服务包详情')),
        body: const Center(child: Text('未找到该服务包')),
      );
    }

    return Scaffold(
      backgroundColor: AppTheme.bg,
      appBar: AppBar(
        title: Text(package.title, style: const TextStyle(fontSize: 16)),
        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),
              ),
              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: 12, color: Colors.white, fontWeight: FontWeight.w600)),
                  ),
                  const SizedBox(height: 12),
                  Text(package.title, style: const TextStyle(fontSize: 22, fontWeight: FontWeight.w700, color: Colors.white)),
                  const SizedBox(height: 8),
                  Text(package.subtitle, style: TextStyle(fontSize: 14, 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: 22, color: AppTheme.primary),
                      ),
                      const SizedBox(height: 6),
                      Text(s.label, style: const TextStyle(fontSize: 12, 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: 14, 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: 14, 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),
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Text(title, style: const TextStyle(fontSize: 16, fontWeight: FontWeight.w600, color: AppTheme.text)),
          const SizedBox(height: 10),
          child,
        ],
      ),
    );
  }
}