import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:go_router/go_router.dart';
import '../../providers/auth_provider.dart';
import '../../models/user_model.dart';

class DashboardScreen extends StatelessWidget {
  const DashboardScreen({super.key});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('NANAXE CRM'),
        actions: [
          Consumer(
            builder: (context, ref, _) {
              final user = ref.watch(currentUserProvider);
              final isAdmin = user?.role == UserRole.admin;

              if (isAdmin ?? false) {
                return IconButton(
                  icon: const Icon(Icons.admin_panel_settings),
                  onPressed: () => context.push('/home/admin'),
                  tooltip: 'Админка',
                );
              }
              return const SizedBox.shrink();
            },
          ),
          IconButton(
            icon: const Icon(Icons.auto_awesome),
            onPressed: () => context.push('/home/ai-test'),
            tooltip: 'AI Тест',
          ),
          IconButton(
            icon: const Icon(Icons.settings),
            onPressed: () {},
          ),
        ],
      ),
      body: SingleChildScrollView(
        padding: const EdgeInsets.all(16),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            _buildWelcomeCard(),
            const SizedBox(height: 24),
            _buildQuickStats(),
            const SizedBox(height: 24),
            _buildQuickActions(context),
          ],
        ),
      ),
    );
  }

  Widget _buildWelcomeCard() {
    return Card(
      child: Padding(
        padding: const EdgeInsets.all(20),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            const Text(
              'Добро пожаловать!',
              style: TextStyle(fontSize: 24, fontWeight: FontWeight.bold),
            ),
            const SizedBox(height: 8),
            const Text(
              'Управляйте задачами команды и планируйте работу с помощью AI',
              style: TextStyle(color: Colors.grey),
            ),
            const SizedBox(height: 16),
            Row(
              children: [
                Expanded(
                  child: OutlinedButton.icon(
                    onPressed: () {},
                    icon: const Icon(Icons.add),
                    label: const Text('Новая задача'),
                  ),
                ),
                const SizedBox(width: 12),
                Expanded(
                  child: OutlinedButton.icon(
                    onPressed: () {},
                    icon: const Icon(Icons.auto_awesome),
                    label: const Text('AI План'),
                  ),
                ),
              ],
            ),
          ],
        ),
      ),
    );
  }

  Widget _buildQuickStats() {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        const Text(
          'Быстрая статистика',
          style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold),
        ),
        const SizedBox(height: 12),
        Row(
          children: [
            Expanded(
              child: _StatCard(
                icon: Icons.task,
                label: 'Задачи',
                value: '12',
                color: Colors.blue,
              ),
            ),
            const SizedBox(width: 12),
            Expanded(
              child: _StatCard(
                icon: Icons.pending_actions,
                label: 'В работе',
                value: '5',
                color: Colors.orange,
              ),
            ),
            const SizedBox(width: 12),
            Expanded(
              child: _StatCard(
                icon: Icons.check_circle,
                label: 'Готово',
                value: '48',
                color: Colors.green,
              ),
            ),
          ],
        ),
      ],
    );
  }

  Widget _buildQuickActions(BuildContext context) {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        const Text(
          'Быстрые действия',
          style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold),
        ),
        const SizedBox(height: 12),
        Wrap(
          spacing: 12,
          runSpacing: 12,
          children: [
            _ActionChip(
              icon: Icons.calendar_today,
              label: 'Планирование',
              onTap: () => context.go('/home/calendar'),
            ),
            _ActionChip(
              icon: Icons.account_tree,
              label: 'Mind-карта',
              onTap: () => context.go('/home/mindmap'),
            ),
            _ActionChip(
              icon: Icons.insights,
              label: 'Аналитика',
              onTap: () {},
            ),
            _ActionChip(
              icon: Icons.people,
              label: 'Команда',
              onTap: () {},
            ),
          ],
        ),
      ],
    );
  }
}

class _StatCard extends StatelessWidget {
  final IconData icon;
  final String label;
  final String value;
  final Color color;

  const _StatCard({
    required this.icon,
    required this.label,
    required this.value,
    required this.color,
  });

  @override
  Widget build(BuildContext context) {
    return Card(
      child: Padding(
        padding: const EdgeInsets.all(16),
        child: Column(
          children: [
            Icon(icon, color: color, size: 32),
            const SizedBox(height: 8),
            Text(
              value,
              style: const TextStyle(
                fontSize: 24,
                fontWeight: FontWeight.bold,
              ),
            ),
            Text(
              label,
              style: const TextStyle(color: Colors.grey, fontSize: 12),
            ),
          ],
        ),
      ),
    );
  }
}

class _ActionChip extends StatelessWidget {
  final IconData icon;
  final String label;
  final VoidCallback onTap;

  const _ActionChip({
    required this.icon,
    required this.label,
    required this.onTap,
  });

  @override
  Widget build(BuildContext context) {
    return InkWell(
      onTap: onTap,
      borderRadius: BorderRadius.circular(12),
      child: Container(
        padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
        decoration: BoxDecoration(
          color: Theme.of(context).colorScheme.surfaceContainerHighest,
          borderRadius: BorderRadius.circular(12),
        ),
        child: Row(
          mainAxisSize: MainAxisSize.min,
          children: [
            Icon(icon, size: 20),
            const SizedBox(width: 8),
            Text(label),
          ],
        ),
      ),
    );
  }
}