import 'package:flutter/material.dart';
import 'package:flutter_animate/flutter_animate.dart';

/// Hero section for teacher dashboard showing class overview
class TeacherHeroWidget extends StatelessWidget {
  final String userName;
  final int totalStudents;
  final int activeQuizzes;
  final int uploadedContent;
  final double classAverageProgress;

  const TeacherHeroWidget({
    super.key,
    required this.userName,
    this.totalStudents = 24,
    this.activeQuizzes = 3,
    this.uploadedContent = 12,
    this.classAverageProgress = 0.72,
  });

  @override
  Widget build(BuildContext context) {
    return Container(
      margin: const EdgeInsets.only(bottom: 24),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          // Header
          Row(
            children: [
              Expanded(
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    Text(
                      'Visão Geral da Turma',
                      maxLines: 1,
                      overflow: TextOverflow.ellipsis,
                      style: TextStyle(
                        color: Theme.of(context).colorScheme.onSurface,
                        fontSize: 20,
                        fontWeight: FontWeight.bold,
                      ),
                    ),
                    const SizedBox(height: 4),
                    Text(
                      'Acompanhe o progresso dos seus alunos',
                      maxLines: 1,
                      overflow: TextOverflow.ellipsis,
                      style: TextStyle(
                        color: Theme.of(context).colorScheme.onSurfaceVariant,
                        fontSize: 13,
                      ),
                    ),
                  ],
                ),
              ),
              Container(
                padding: const EdgeInsets.symmetric(
                  horizontal: 12,
                  vertical: 6,
                ),
                decoration: BoxDecoration(
                  color: Theme.of(context).colorScheme.secondary,
                  borderRadius: BorderRadius.circular(20),
                ),
                child: Row(
                  mainAxisSize: MainAxisSize.min,
                  children: [
                    const Icon(Icons.people, color: Colors.white, size: 16),
                    const SizedBox(width: 4),
                    Text(
                      '$totalStudents alunos',
                      style: const TextStyle(
                        color: Colors.white,
                        fontSize: 12,
                        fontWeight: FontWeight.bold,
                      ),
                    ),
                  ],
                ),
              ),
            ],
          ),
          const SizedBox(height: 20),

          // Main Class Progress Card
          Container(
            padding: const EdgeInsets.all(24),
            decoration: BoxDecoration(
              gradient: LinearGradient(
                begin: Alignment.topLeft,
                end: Alignment.bottomRight,
                colors: [
                  Theme.of(context).colorScheme.primary,
                  Theme.of(context).colorScheme.primary.withOpacity(0.8),
                ],
              ),
              borderRadius: BorderRadius.circular(20),
              boxShadow: [
                BoxShadow(
                  color: Theme.of(context).colorScheme.shadow.withOpacity(0.1),
                  blurRadius: 20,
                  offset: const Offset(0, 10),
                ),
              ],
            ),
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                // Overall Progress
                Row(
                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
                  children: [
                    const Flexible(
                      child: Text(
                        'Progresso Médio da Turma',
                        maxLines: 2,
                        overflow: TextOverflow.ellipsis,
                        style: TextStyle(
                          color: Colors.white,
                          fontSize: 15,
                          fontWeight: FontWeight.bold,
                        ),
                      ),
                    ),
                    Text(
                      '${(classAverageProgress * 100).toInt()}%',
                      style: const TextStyle(
                        color: Colors.white,
                        fontSize: 24,
                        fontWeight: FontWeight.bold,
                      ),
                    ),
                  ],
                ),
                const SizedBox(height: 16),

                // Progress Bar
                Container(
                  height: 12,
                  decoration: BoxDecoration(
                    color: Colors.white.withOpacity(0.3),
                    borderRadius: BorderRadius.circular(6),
                  ),
                  child: FractionallySizedBox(
                    alignment: Alignment.centerLeft,
                    widthFactor: classAverageProgress,
                    child: Container(
                      decoration: BoxDecoration(
                        gradient: const LinearGradient(
                          colors: [Colors.white, Color(0xFFF8F9FA)],
                        ),
                        borderRadius: BorderRadius.circular(6),
                      ),
                    ),
                  ),
                ),
                const SizedBox(height: 20),

                // Stats Grid
                Row(
                  children: [
                    Expanded(
                      child: _buildStatCard(
                        icon: Icons.quiz,
                        value: '$activeQuizzes',
                        label: 'Quizzes Ativos',
                      ),
                    ),
                    const SizedBox(width: 12),
                    Expanded(
                      child: _buildStatCard(
                        icon: Icons.upload_file,
                        value: '$uploadedContent',
                        label: 'Conteúdos',
                      ),
                    ),
                  ],
                ),
              ],
            ),
          ).animate().scale(
            duration: const Duration(milliseconds: 600),
            curve: Curves.elasticOut,
          ),

          const SizedBox(height: 20),

          // Recent Activity
          Container(
                padding: const EdgeInsets.all(20),
                decoration: BoxDecoration(
                  color: Theme.of(context).colorScheme.surface,
                  borderRadius: BorderRadius.circular(16),
                  border: Border.all(
                    color: Theme.of(
                      context,
                    ).colorScheme.outline.withOpacity(0.2),
                  ),
                  boxShadow: [
                    BoxShadow(
                      color: Theme.of(
                        context,
                      ).colorScheme.shadow.withOpacity(0.05),
                      blurRadius: 10,
                      offset: const Offset(0, 4),
                    ),
                  ],
                ),
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    Row(
                      children: [
                        Icon(
                          Icons.trending_up,
                          color: Theme.of(context).colorScheme.secondary,
                          size: 20,
                        ),
                        const SizedBox(width: 8),
                        Text(
                          'Atividade Recente',
                          style: TextStyle(
                            color: Theme.of(context).colorScheme.onSurface,
                            fontSize: 16,
                            fontWeight: FontWeight.bold,
                          ),
                        ),
                      ],
                    ),
                    const SizedBox(height: 12),
                    _buildActivityItem(
                      context,
                      '15 alunos completaram o quiz de Derivadas',
                      'Hoje, 14:30',
                      Theme.of(context).colorScheme.primary,
                    ),
                    const SizedBox(height: 8),
                    _buildActivityItem(
                      context,
                      'Novo conteúdo: Regra da Cadeia',
                      'Ontem, 09:15',
                      Theme.of(context).colorScheme.secondary,
                    ),
                    const SizedBox(height: 8),
                    _buildActivityItem(
                      context,
                      '3 alunos precisam de apoio em Limites',
                      'Ontem, 16:45',
                      Theme.of(context).colorScheme.error,
                    ),
                  ],
                ),
              )
              .animate()
              .slideX(
                duration: const Duration(milliseconds: 800),
                curve: Curves.easeOut,
              )
              .then(delay: const Duration(milliseconds: 200)),
        ],
      ),
    );
  }

  Widget _buildStatCard({
    required IconData icon,
    required String value,
    required String label,
  }) {
    return Container(
      padding: const EdgeInsets.all(16),
      decoration: BoxDecoration(
        color: Colors.white.withOpacity(0.2),
        borderRadius: BorderRadius.circular(12),
        border: Border.all(color: Colors.white.withOpacity(0.3), width: 1),
      ),
      child: Column(
        children: [
          Icon(icon, color: Colors.white, size: 24),
          const SizedBox(height: 8),
          Text(
            value,
            style: const TextStyle(
              color: Colors.white,
              fontSize: 20,
              fontWeight: FontWeight.bold,
            ),
          ),
          const SizedBox(height: 4),
          Text(
            label,
            style: const TextStyle(color: Colors.white, fontSize: 11),
            textAlign: TextAlign.center,
            maxLines: 2,
            overflow: TextOverflow.ellipsis,
          ),
        ],
      ),
    );
  }

  Widget _buildActivityItem(
    BuildContext context,
    String text,
    String time,
    Color color,
  ) {
    return Row(
      children: [
        Container(
          width: 8,
          height: 8,
          decoration: BoxDecoration(color: color, shape: BoxShape.circle),
        ),
        const SizedBox(width: 12),
        Expanded(
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Text(
                text,
                style: TextStyle(
                  color: Theme.of(context).colorScheme.onSurfaceVariant,
                  fontSize: 14,
                ),
              ),
              const SizedBox(height: 2),
              Text(
                time,
                style: TextStyle(
                  color: Theme.of(
                    context,
                  ).colorScheme.onSurfaceVariant.withOpacity(0.7),
                  fontSize: 12,
                ),
              ),
            ],
          ),
        ),
      ],
    );
  }
}