feat: implementa dashboard com estatísticas em tempo real

- Adiciona busca de totais de turmas, professores e alunos
- Implementa listagem de turmas recentes com contagem de alunos
- Adiciona seção de histórias recentes com nome dos alunos
- Melhora feedback visual com estados de loading
- Usa queries otimizadas do Supabase com contagem e joins

src/components/auth/LoginForm.tsx

@@ -1,5 +1,5 @@
 import React, { useState } from 'react';
-import { LogIn } from 'lucide-react';
+import { LogIn, Eye, EyeOff, School, GraduationCap, User } from 'lucide-react';
 import { useAuth } from '../../hooks/useAuth';
 import { useNavigate } from 'react-router-dom';
 
@@ -9,16 +9,31 @@ interface LoginFormProps {
   onRegisterClick?: () => void;
 }
 
+const userTypeIcons = {
+  school: <School className="h-8 w-8 text-purple-600" />,
+  teacher: <GraduationCap className="h-8 w-8 text-purple-600" />,
+  student: <User className="h-8 w-8 text-purple-600" />
+};
+
+const userTypeLabels = {
+  school: 'Escola',
+  teacher: 'Professor',
+  student: 'Aluno'
+};
+
 export function LoginForm({ userType, onLogin, onRegisterClick }: LoginFormProps) {
   const [email, setEmail] = useState('');
   const [password, setPassword] = useState('');
+  const [showPassword, setShowPassword] = useState(false);
   const [error, setError] = useState('');
+  const [loading, setLoading] = useState(false);
   const { signIn } = useAuth();
   const navigate = useNavigate();
 
   const handleSubmit = async (e: React.FormEvent) => {
     e.preventDefault();
     setError('');
+    setLoading(true);
     
     try {
       const { user } = await signIn(email, password);
@@ -31,28 +46,34 @@ export function LoginForm({ userType, onLogin, onRegisterClick }: LoginFormProps
       }
     } catch (err) {
       setError('Erro ao fazer login. Verifique suas credenciais.');
+    } finally {
+      setLoading(false);
     }
   };
 
   return (
-    <div className="max-w-md w-full space-y-8">
-      <div>
-        <h2 className="text-3xl font-bold text-center text-purple-600">
+    <div className="min-h-screen bg-gradient-to-b from-purple-50 to-white py-12">
+      <div className="max-w-md mx-auto px-4">
+        <div className="text-center mb-8">
+          <div className="inline-flex items-center justify-center w-16 h-16 rounded-full bg-purple-100 mb-4">
+            {userTypeIcons[userType]}
+          </div>
+          <h1 className="text-3xl font-bold text-gray-900 mb-2">
             Bem-vindo de volta!
-        </h2>
-        <p className="mt-2 text-center text-gray-600">
-          Continue sua jornada de histórias mágicas
+          </h1>
+          <p className="text-gray-600">
+            Faça login como {userTypeLabels[userType]}
           </p>
         </div>
 
         {error && (
-        <div className="bg-red-50 text-red-600 p-3 rounded-lg text-sm">
+          <div className="mb-6 p-4 bg-red-50 border border-red-200 rounded-lg text-red-600">
             {error}
           </div>
         )}
 
-      <form onSubmit={handleSubmit} className="mt-8 space-y-6">
-        <div className="space-y-4">
+        <div className="bg-white rounded-2xl shadow-xl p-8">
+          <form onSubmit={handleSubmit} className="space-y-6">
             <div>
               <label htmlFor="email" className="block text-sm font-medium text-gray-700">
                 Email
@@ -71,37 +92,60 @@ export function LoginForm({ userType, onLogin, onRegisterClick }: LoginFormProps
               <label htmlFor="password" className="block text-sm font-medium text-gray-700">
                 Senha
               </label>
+              <div className="relative mt-1">
                 <input
                   id="password"
-              type="password"
+                  type={showPassword ? 'text' : 'password'}
                   required
                   value={password}
                   onChange={(e) => setPassword(e.target.value)}
-              className="mt-1 block w-full rounded-lg border-gray-300 shadow-sm focus:border-purple-500 focus:ring-purple-500"
+                  className="block w-full rounded-lg border-gray-300 shadow-sm focus:border-purple-500 focus:ring-purple-500 pr-10"
                 />
+                <button
+                  type="button"
+                  onClick={() => setShowPassword(!showPassword)}
+                  className="absolute inset-y-0 right-0 pr-3 flex items-center"
+                >
+                  {showPassword ? (
+                    <EyeOff className="h-5 w-5 text-gray-400" />
+                  ) : (
+                    <Eye className="h-5 w-5 text-gray-400" />
+                  )}
+                </button>
               </div>
             </div>
 
             <button
               type="submit"
-          className="w-full flex justify-center items-center gap-2 py-3 px-4 border border-transparent rounded-lg shadow-sm text-white bg-purple-600 hover:bg-purple-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-purple-500"
+              disabled={loading}
+              className="w-full flex justify-center items-center gap-2 py-3 px-4 border border-transparent rounded-lg shadow-sm text-white bg-purple-600 hover:bg-purple-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-purple-500 disabled:opacity-50"
             >
-          <LogIn className="w-5 h-5" />
+              {loading ? (
+                'Entrando...'
+              ) : (
+                <>
+                  <LogIn className="h-5 w-5" />
                   Entrar
+                </>
+              )}
             </button>
+          </form>
 
           {onRegisterClick && (
-          <div className="text-center">
+            <div className="mt-6 text-center">
+              <p className="text-sm text-gray-600">
+                Ainda não tem uma conta?{' '}
                 <button
-              type="button"
                   onClick={onRegisterClick}
-              className="text-purple-600 hover:text-purple-500"
+                  className="text-purple-600 hover:text-purple-500 font-medium"
                 >
-              Criar uma nova conta
+                  Cadastre-se
                 </button>
+              </p>
             </div>
           )}
-      </form>
+        </div>
+      </div>
     </div>
   );
 }

src/pages/dashboard/DashboardHome.tsx

@@ -1,87 +1,177 @@
-import React from 'react';
+import React, { useEffect, useState } from 'react';
 import { Users, GraduationCap, BookOpen } from 'lucide-react';
-import { useDatabase } from '../../hooks/useDatabase';
+import { supabase } from '../../lib/supabase';
+
+interface DashboardStats {
+  totalClasses: number;
+  totalTeachers: number;
+  totalStudents: number;
+  recentClasses: any[];
+  recentStories: any[];
+}
 
 export function DashboardHome() {
-  const { loading, error } = useDatabase();
-  const [stats, setStats] = React.useState({
+  const [stats, setStats] = useState<DashboardStats>({
     totalClasses: 0,
     totalTeachers: 0,
     totalStudents: 0,
-    totalStories: 0
+    recentClasses: [],
+    recentStories: []
   });
+  const [loading, setLoading] = useState(true);
 
-  React.useEffect(() => {
-    // Implementar busca de estatísticas
+  useEffect(() => {
+    const fetchDashboardStats = async () => {
+      try {
+        const { data: { session } } = await supabase.auth.getSession();
+        if (!session?.user?.id) return;
+
+        const schoolId = session.user.id;
+
+        // Buscar total de turmas
+        const { count: classesCount } = await supabase
+          .from('classes')
+          .select('*', { count: 'exact', head: true })
+          .eq('school_id', schoolId);
+
+        // Buscar total de professores
+        const { count: teachersCount } = await supabase
+          .from('teacher_classes')
+          .select('teacher_id', { count: 'exact', head: true })
+          .eq('school_id', schoolId);
+
+        // Buscar total de alunos
+        const { count: studentsCount } = await supabase
+          .from('students')
+          .select('*', { count: 'exact', head: true })
+          .eq('school_id', schoolId);
+
+        // Buscar turmas recentes
+        const { data: recentClasses } = await supabase
+          .from('classes')
+          .select(`
+            *,
+            students:students(count)
+          `)
+          .eq('school_id', schoolId)
+          .order('created_at', { ascending: false })
+          .limit(5);
+
+        // Buscar histórias recentes
+        const { data: recentStories } = await supabase
+          .from('stories')
+          .select(`
+            *,
+            students:students(name)
+          `)
+          .eq('school_id', schoolId)
+          .order('created_at', { ascending: false })
+          .limit(5);
+
+        setStats({
+          totalClasses: classesCount || 0,
+          totalTeachers: teachersCount || 0,
+          totalStudents: studentsCount || 0,
+          recentClasses: recentClasses || [],
+          recentStories: recentStories || []
+        });
+      } catch (error) {
+        console.error('Erro ao buscar estatísticas:', error);
+      } finally {
+        setLoading(false);
+      }
+    };
+
+    fetchDashboardStats();
   }, []);
 
   return (
-    <div>
-      <h1 className="text-2xl font-bold text-gray-900 mb-6">Dashboard</h1>
+    <div className="p-6">
+      <h1 className="text-2xl font-bold mb-8">Dashboard</h1>
 
-      {error && (
-        <div className="mb-4 p-4 bg-red-50 text-red-600 rounded-lg">
-          {error}
-        </div>
-      )}
-
-      <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6 mb-8">
-        <div className="bg-white p-6 rounded-xl shadow-sm border border-gray-200">
-          <div className="flex items-center gap-4">
-            <div className="p-3 bg-purple-100 rounded-lg">
+      <div className="grid gap-6 md:grid-cols-2 lg:grid-cols-3 mb-8">
+        <div className="bg-white rounded-2xl p-6 flex items-center gap-4">
+          <div className="w-12 h-12 rounded-xl bg-purple-100 flex items-center justify-center">
             <Users className="h-6 w-6 text-purple-600" />
           </div>
           <div>
-              <p className="text-sm text-gray-600">Total de Turmas</p>
-              <p className="text-2xl font-semibold text-gray-900">
-                {loading ? '...' : stats.totalClasses}
-              </p>
-            </div>
+            <p className="text-gray-600">Total de Turmas</p>
+            <p className="text-3xl font-bold">{stats.totalClasses}</p>
           </div>
         </div>
 
-        <div className="bg-white p-6 rounded-xl shadow-sm border border-gray-200">
-          <div className="flex items-center gap-4">
-            <div className="p-3 bg-blue-100 rounded-lg">
+        <div className="bg-white rounded-2xl p-6 flex items-center gap-4">
+          <div className="w-12 h-12 rounded-xl bg-blue-100 flex items-center justify-center">
             <GraduationCap className="h-6 w-6 text-blue-600" />
           </div>
           <div>
-              <p className="text-sm text-gray-600">Total de Professores</p>
-              <p className="text-2xl font-semibold text-gray-900">
-                {loading ? '...' : stats.totalTeachers}
-              </p>
-            </div>
+            <p className="text-gray-600">Total de Professores</p>
+            <p className="text-3xl font-bold">{stats.totalTeachers}</p>
           </div>
         </div>
 
-        <div className="bg-white p-6 rounded-xl shadow-sm border border-gray-200">
-          <div className="flex items-center gap-4">
-            <div className="p-3 bg-green-100 rounded-lg">
-              <Users className="h-6 w-6 text-green-600" />
+        <div className="bg-white rounded-2xl p-6 flex items-center gap-4">
+          <div className="w-12 h-12 rounded-xl bg-green-100 flex items-center justify-center">
+            <BookOpen className="h-6 w-6 text-green-600" />
           </div>
           <div>
-              <p className="text-sm text-gray-600">Total de Alunos</p>
-              <p className="text-2xl font-semibold text-gray-900">
-                {loading ? '...' : stats.totalStudents}
+            <p className="text-gray-600">Total de Alunos</p>
+            <p className="text-3xl font-bold">{stats.totalStudents}</p>
+          </div>
+        </div>
+      </div>
+
+      <div className="grid gap-6 md:grid-cols-2">
+        <div className="bg-white rounded-2xl p-6">
+          <h2 className="text-xl font-semibold mb-4">Últimas Turmas</h2>
+          {loading ? (
+            <div className="animate-pulse space-y-4">
+              {[...Array(3)].map((_, i) => (
+                <div key={i} className="h-12 bg-gray-100 rounded-lg" />
+              ))}
+            </div>
+          ) : stats.recentClasses.length === 0 ? (
+            <p className="text-gray-500 text-center py-4">Nenhuma turma cadastrada</p>
+          ) : (
+            <div className="space-y-4">
+              {stats.recentClasses.map((classItem) => (
+                <div key={classItem.id} className="flex justify-between items-center">
+                  <div>
+                    <h3 className="font-medium">{classItem.name}</h3>
+                    <p className="text-sm text-gray-500">
+                      {classItem.grade} • {classItem.students.count} alunos
                     </p>
                   </div>
                 </div>
+              ))}
             </div>
+          )}
         </div>
 
-      <div className="grid grid-cols-1 lg:grid-cols-2 gap-6">
-        <div className="bg-white p-6 rounded-xl shadow-sm border border-gray-200">
-          <h2 className="text-lg font-semibold text-gray-900 mb-4">
-            Últimas Turmas
-          </h2>
-          {/* Lista de últimas turmas */}
+        <div className="bg-white rounded-2xl p-6">
+          <h2 className="text-xl font-semibold mb-4">Histórias Recentes</h2>
+          {loading ? (
+            <div className="animate-pulse space-y-4">
+              {[...Array(3)].map((_, i) => (
+                <div key={i} className="h-12 bg-gray-100 rounded-lg" />
+              ))}
             </div>
-
-        <div className="bg-white p-6 rounded-xl shadow-sm border border-gray-200">
-          <h2 className="text-lg font-semibold text-gray-900 mb-4">
-            Histórias Recentes
-          </h2>
-          {/* Lista de histórias recentes */}
+          ) : stats.recentStories.length === 0 ? (
+            <p className="text-gray-500 text-center py-4">Nenhuma história registrada</p>
+          ) : (
+            <div className="space-y-4">
+              {stats.recentStories.map((story) => (
+                <div key={story.id} className="flex justify-between items-center">
+                  <div>
+                    <h3 className="font-medium">{story.title}</h3>
+                    <p className="text-sm text-gray-500">
+                      por {story.students.name}
+                    </p>
+                  </div>
+                </div>
+              ))}
+            </div>
+          )}
         </div>
       </div>
     </div>

src/pages/dashboard/classes/ClassesPage.tsx

@@ -1,115 +1,111 @@
 import React from 'react';
-import { Plus, Search, MoreVertical } from 'lucide-react';
+import { Plus, Search, MoreVertical, GraduationCap } from 'lucide-react';
 import { useNavigate } from 'react-router-dom';
 import { useDatabase } from '../../../hooks/useDatabase';
-
-interface Class {
-  id: string;
-  name: string;
-  grade: string;
-  year: number;
-  teacher_count: number;
-  student_count: number;
-}
+import { supabase } from '../../../lib/supabase';
+import type { Class } from '../../../types/database';
 
 export function ClassesPage() {
   const navigate = useNavigate();
-  const { loading, error } = useDatabase();
   const [classes, setClasses] = React.useState<Class[]>([]);
   const [searchTerm, setSearchTerm] = React.useState('');
+  const [loading, setLoading] = React.useState(true);
 
   React.useEffect(() => {
-    // Implementar busca de turmas
+    const fetchClasses = async () => {
+      try {
+        const { data: { session } } = await supabase.auth.getSession();
+        if (!session?.user?.id) return;
+
+        const { data, error } = await supabase
+          .from('classes')
+          .select(`
+            *,
+            students:students(count),
+            teachers:teacher_classes(count)
+          `)
+          .eq('school_id', session.user.id);
+
+        if (error) throw error;
+        setClasses(data || []);
+      } catch (err) {
+        console.error('Erro ao buscar turmas:', err);
+      } finally {
+        setLoading(false);
+      }
+    };
+
+    fetchClasses();
   }, []);
 
-  const handleCreateClass = () => {
-    navigate('/dashboard/turmas/nova');
-  };
-
-  const handleClassClick = (classId: string) => {
-    navigate(`/dashboard/turmas/${classId}`);
-  };
-
-  const filteredClasses = classes.filter(c => 
-    c.name.toLowerCase().includes(searchTerm.toLowerCase()) ||
-    c.grade.toLowerCase().includes(searchTerm.toLowerCase())
+  const filteredClasses = classes.filter(classItem =>
+    classItem.name.toLowerCase().includes(searchTerm.toLowerCase()) ||
+    classItem.grade.toLowerCase().includes(searchTerm.toLowerCase())
   );
 
   return (
-    <div>
-      <div className="flex justify-between items-center mb-6">
-        <h1 className="text-2xl font-bold text-gray-900">Turmas</h1>
+    <div className="p-6">
+      <div className="flex justify-between items-center mb-8">
+        <h1 className="text-2xl font-bold">Turmas</h1>
         <button
-          onClick={handleCreateClass}
-          className="flex items-center gap-2 px-4 py-2 bg-purple-600 text-white rounded-lg hover:bg-purple-700 transition"
+          onClick={() => navigate('nova')}
+          className="inline-flex items-center gap-2 px-6 py-3 bg-purple-600 text-white rounded-xl hover:bg-purple-700 font-medium text-lg"
         >
-          <Plus className="h-5 w-5" />
+          <Plus className="h-6 w-6" />
           Nova Turma
         </button>
       </div>
 
-      {error && (
-        <div className="mb-4 p-4 bg-red-50 text-red-600 rounded-lg">
-          {error}
-        </div>
-      )}
-
-      <div className="bg-white rounded-xl shadow-sm border border-gray-200 overflow-hidden">
-        <div className="p-4 border-b border-gray-200">
-          <div className="relative">
-            <Search className="absolute left-3 top-1/2 -translate-y-1/2 h-5 w-5 text-gray-400" />
+      <div className="bg-white rounded-2xl shadow-sm p-6">
+        <div className="relative mb-6">
+          <Search className="absolute left-4 top-1/2 transform -translate-y-1/2 text-gray-400 h-5 w-5" />
           <input
             type="text"
             placeholder="Buscar turmas..."
             value={searchTerm}
             onChange={(e) => setSearchTerm(e.target.value)}
-              className="w-full pl-10 pr-4 py-2 border border-gray-300 rounded-lg focus:ring-purple-500 focus:border-purple-500"
+            className="w-full pl-12 pr-4 py-3 bg-gray-50 border border-gray-200 rounded-xl focus:ring-purple-500 focus:border-purple-500"
           />
         </div>
-        </div>
 
         {loading ? (
-          <div className="p-8 text-center text-gray-500">Carregando...</div>
+          <div className="text-center py-12">
+            <div className="animate-spin rounded-full h-8 w-8 border-b-2 border-purple-600 mx-auto"></div>
+          </div>
         ) : filteredClasses.length === 0 ? (
-          <div className="p-8 text-center text-gray-500">
-            Nenhuma turma encontrada
+          <div className="text-center py-12 text-gray-500">
+            {searchTerm ? 'Nenhuma turma encontrada' : 'Nenhuma turma cadastrada'}
           </div>
         ) : (
-          <div className="divide-y divide-gray-200">
+          <div className="divide-y divide-gray-100">
             {filteredClasses.map((classItem) => (
               <div
                 key={classItem.id}
-                className="p-4 hover:bg-gray-50 cursor-pointer"
-                onClick={() => handleClassClick(classItem.id)}
+                className="flex items-center justify-between py-4 hover:bg-gray-50 transition-colors"
               >
-                <div className="flex justify-between items-center">
+                <div className="flex items-center gap-4">
+                  <div className="w-10 h-10 rounded-full bg-purple-100 flex items-center justify-center">
+                    <GraduationCap className="h-5 w-5 text-purple-600" />
+                  </div>
                   <div>
                     <h3 className="text-lg font-medium text-gray-900">
                       {classItem.name}
                     </h3>
                     <p className="text-sm text-gray-500">
-                      {classItem.grade} - {classItem.year}
+                      {classItem.grade} • {(classItem as any).students?.count || 0} alunos
                     </p>
                   </div>
-                  <div className="flex items-center gap-6">
-                    <div className="text-sm text-gray-500">
-                      <span className="font-medium text-gray-900">
-                        {classItem.teacher_count}
-                      </span>{' '}
-                      professores
-                    </div>
-                    <div className="text-sm text-gray-500">
-                      <span className="font-medium text-gray-900">
-                        {classItem.student_count}
-                      </span>{' '}
-                      alunos
                 </div>
+
+                <div className="flex items-center gap-4">
+                  <span className="px-3 py-1 text-sm bg-green-50 text-green-700 rounded-full">
+                    Ativo
+                  </span>
                   <button className="p-2 hover:bg-gray-100 rounded-full">
                     <MoreVertical className="h-5 w-5 text-gray-400" />
                   </button>
                 </div>
               </div>
-              </div>
             ))}
           </div>
         )}