feat: Implement maintenance mode functionality

Introduces a new maintenance mode feature to allow administrators to temporarily disable the application for updates or maintenance.

This includes:
- A dedicated `MaintenancePage` component.
- Global state management for maintenance mode and message in `App.tsx`.
- Firestore integration for storing and retrieving maintenance settings.
- Updates to `AdminDashboard.tsx` to manage these settings.
- Firebase security rules adjustments for the new settings collection.
- Animate transitions for signal results in `SignalHistory.tsx`.

firebase-blueprint.json

@@ -53,6 +53,16 @@
         }
       },
       "required": ["userId", "userName", "text", "timestamp"]
+    },
+    "AppSettings": {
+      "title": "App Settings",
+      "description": "Global application settings.",
+      "type": "object",
+      "properties": {
+        "maintenanceMode": { "type": "boolean" },
+        "maintenanceMessage": { "type": "string" }
+      },
+      "required": ["maintenanceMode"]
     }
   },
   "firestore": {
@@ -67,6 +77,11 @@
     "testimonials/{testimonialId}": {
       "schema": "Testimonial",
       "description": "Public user testimonials."
+    },
+    "settings/{settingId}": {
+      "schema": "AppSettings",
+      "description": "Global application settings."
     }
   }
 }
+

firestore.rules

@@ -58,7 +58,7 @@ service cloud.firestore {
                && data.name is string && data.name.size() <= 100
                && (data.isPremium is bool || data.isPremium == null)
                && (data.isAdmin is bool || data.isAdmin == null)
-               && data.plan in ['basic', 'pro', 'elite']
+               && data.plan in ['basic', 'pro', 'elite', 'lifetime']
                && (data.analysisLimit is int || data.analysisLimit == null)
                && (data.isApproved is bool || data.isApproved == null);
       }
@@ -120,5 +120,11 @@ service cloud.firestore {
       allow create: if isSignedIn() && isValidTestimonial(incoming());
       allow update, delete: if isDbAdmin();
     }
+    // --- Settings Collection ---
+    match /settings/{settingId} {
+      allow read: if true;
+      allow update, create, delete: if isDbAdmin();
+    }
   }
 }
+

src/App.tsx

@@ -13,10 +13,11 @@ import { AdminDashboard } from './components/AdminDashboard';
 import { LandingPage } from './components/LandingPage';
 import { ProfileView } from './components/ProfileView';
 import { NotificationManager } from './components/NotificationManager';
+import { MaintenancePage } from './components/MaintenancePage';
 import { TrendingUp, ShieldAlert, Ghost, Mail, Lock, UserPlus, LogIn, Loader2, ArrowLeft, User as UserIcon, Eye, EyeOff } from 'lucide-react';
 import { motion, AnimatePresence } from 'motion/react';
 import { onAuthStateChanged, signInWithEmailAndPassword, createUserWithEmailAndPassword, updateProfile, signOut, sendEmailVerification, sendPasswordResetEmail, User, setPersistence, browserLocalPersistence, browserSessionPersistence } from 'firebase/auth';
-import { doc, setDoc, getDoc, updateDoc } from 'firebase/firestore';
+import { doc, setDoc, getDoc, updateDoc, onSnapshot } from 'firebase/firestore';
 import { auth, db, handleFirestoreError, OperationType } from './lib/firebase';
 
 export default function App() {
@@ -24,6 +25,8 @@ export default function App() {
   const [userData, setUserData] = useState<any>(null);
   const [loading, setLoading] = useState(true);
   const [activeTab, setActiveTab] = useState('scan');
+  const [maintenanceMode, setMaintenanceMode] = useState(false);
+  const [maintenanceMessage, setMaintenanceMessage] = useState('');
   
       // Auth & View State
   const [isSecretAdminRoute, setIsSecretAdminRoute] = useState(() => window.location.pathname === '/fxbros-admin' || window.location.hash === '#/fxbros-admin');
@@ -45,6 +48,21 @@ export default function App() {
 
   const [unauthView, setUnauthView] = useState<'hero' | 'plans'>('hero');
 
+  useEffect(() => {
+    // Listen for settings changes
+    const settingsRef = doc(db, 'settings', 'app');
+    const unsubSettings = onSnapshot(settingsRef, (docSnap) => {
+      if (docSnap.exists()) {
+        setMaintenanceMode(docSnap.data().maintenanceMode || false);
+        setMaintenanceMessage(docSnap.data().maintenanceMessage || '');
+      }
+    }, (error) => {
+      console.warn("Failed to listen to settings:", error);
+    });
+
+    return () => unsubSettings();
+  }, []);
+
   useEffect(() => {
     const unsubscribe = onAuthStateChanged(auth, async (currentUser) => {
       if (currentUser && currentUser.emailVerified) {
@@ -235,6 +253,11 @@ export default function App() {
     );
   }
 
+  // Se estiver em manutenção e o usuário não for admin, mostra a página de manutenção
+  if (maintenanceMode && !isAdmin) {
+    return <MaintenancePage message={maintenanceMessage} />;
+  }
+
   if (!user) {
     if (!showAuth) {
       if (unauthView === 'hero') {

src/components/AdminDashboard.tsx

@@ -1,7 +1,7 @@
 import React, { useState, useEffect } from 'react';
-import { Users, ShieldCheck, Search, Loader2 } from 'lucide-react';
+import { Users, ShieldCheck, Search, Loader2, Settings, ShieldAlert } from 'lucide-react';
 import { cn } from '../lib/utils';
-import { collection, onSnapshot, doc, updateDoc, addDoc, deleteDoc, query, orderBy } from 'firebase/firestore';
+import { collection, onSnapshot, doc, updateDoc, addDoc, deleteDoc, query, orderBy, getDoc, setDoc } from 'firebase/firestore';
 import { db, handleFirestoreError, OperationType, auth } from '../lib/firebase';
 import { ImageUploader } from './ImageUploader';
 
@@ -25,6 +25,9 @@ export const AdminDashboard: React.FC = () => {
   const [testText, setTestText] = useState('');
   const [testImageUrls, setTestImageUrls] = useState<string[]>([]);
   const [submittingTestimonial, setSubmittingTestimonial] = useState(false);
+  const [maintenanceMode, setMaintenanceMode] = useState(false);
+  const [maintenanceMessage, setMaintenanceMessage] = useState('');
+  const [savingSettings, setSavingSettings] = useState(false);
 
   const handleCreateTestimonial = async (e: React.FormEvent) => {
     e.preventDefault();
@@ -70,12 +73,41 @@ export const AdminDashboard: React.FC = () => {
        console.error("Testimonials fetch error:", error);
     });
 
+    const settingsRef = doc(db, 'settings', 'app');
+    const unsubSettings = onSnapshot(settingsRef, (docSnap) => {
+      if (docSnap.exists()) {
+        setMaintenanceMode(docSnap.data().maintenanceMode || false);
+        setMaintenanceMessage(docSnap.data().maintenanceMessage || '');
+      }
+    }, (error) => {
+      console.warn("Failed to listen to settings:", error);
+    });
+
     return () => {
       unsub();
       unsubTestimonials();
+      unsubSettings();
     };
   }, []);
 
+  const handleSaveSettings = async () => {
+    setSavingSettings(true);
+    try {
+      const settingsRef = doc(db, 'settings', 'app');
+      // Using setDoc with merge to create it if it doesn't exist
+      await setDoc(settingsRef, {
+        maintenanceMode,
+        maintenanceMessage
+      }, { merge: true });
+      alert('Configurações salvas com sucesso!');
+    } catch (err) {
+      console.error(err);
+      alert('Erro ao salvar as configurações.');
+    } finally {
+      setSavingSettings(false);
+    }
+  };
+
   const handleToggleApproval = async (userId: string, currentStatus: boolean) => {
     try {
       await updateDoc(doc(db, 'users', userId), {
@@ -156,6 +188,61 @@ export const AdminDashboard: React.FC = () => {
         </div>
       </div>
 
+      <div className="glass-card p-6 space-y-4 border-l-4 border-l-brand-red mb-8">
+        <div className="flex items-center gap-3 mb-4">
+          <Settings className="text-zinc-400" size={20} />
+          <h3 className="font-black uppercase tracking-widest text-zinc-300 text-sm">Configurações do Sistema</h3>
+        </div>
+        
+        <div className="grid grid-cols-1 md:grid-cols-2 gap-6">
+          <div className="space-y-4 bg-black/20 p-4 rounded-xl border border-white/5">
+            <div className="flex items-center justify-between">
+              <div className="flex items-center gap-2">
+                <ShieldAlert className={maintenanceMode ? "text-brand-red" : "text-zinc-500"} size={18} />
+                <span className="text-sm font-bold text-white uppercase tracking-wider">Modo de Manutenção</span>
+              </div>
+              <button 
+                onClick={() => setMaintenanceMode(!maintenanceMode)}
+                className={cn(
+                  "relative inline-flex h-6 w-11 items-center rounded-full transition-colors",
+                  maintenanceMode ? "bg-brand-red" : "bg-zinc-700"
+                )}
+              >
+                <span className={cn(
+                  "inline-block h-4 w-4 transform rounded-full bg-white transition-transform",
+                  maintenanceMode ? "translate-x-6" : "translate-x-1"
+                )} />
+              </button>
+            </div>
+            <p className="text-xs text-zinc-500 leading-relaxed">
+              O modo de manutenção bloqueia o acesso ao aplicativo para todos os usuários comuns, exibindo uma tela de aviso. Somente administradores poderão acessar a plataforma.
+            </p>
+          </div>
+
+          <div className="space-y-3">
+            <label className="text-[10px] font-black uppercase text-zinc-500 tracking-widest">
+              Mensagem de Manutenção (Opcional)
+            </label>
+            <textarea
+              placeholder="Ex: Estamos realizando melhorias..."
+              className="w-full bg-white/5 border border-white/10 rounded-lg p-3 text-white focus:outline-none focus:ring-1 focus:ring-brand-red text-sm min-h-[80px]"
+              value={maintenanceMessage}
+              onChange={(e) => setMaintenanceMessage(e.target.value)}
+              disabled={!maintenanceMode}
+            />
+          </div>
+        </div>
+
+        <button 
+          onClick={handleSaveSettings}
+          disabled={savingSettings}
+          className="mt-6 w-full md:w-auto px-6 py-2.5 bg-white/10 hover:bg-white/20 text-white text-xs font-black uppercase tracking-widest rounded-lg transition-colors flex items-center justify-center gap-2"
+        >
+          {savingSettings ? <Loader2 size={16} className="animate-spin" /> : <ShieldCheck size={16} />}
+          Salvar Configurações
+        </button>
+      </div>
+
       <form onSubmit={handleCreateTestimonial} className="glass-card p-6 space-y-4">
         <h3 className="font-black uppercase tracking-widest text-brand-red text-sm">Postar Resultado como Admin</h3>
         <div className="grid grid-cols-1 md:grid-cols-2 gap-4">

src/components/MaintenancePage.tsx

@@ -0,0 +1,67 @@
+import React from 'react';
+import { motion } from 'motion/react';
+import { ShieldAlert, RefreshCw, Activity } from 'lucide-react';
+
+interface MaintenancePageProps {
+  message?: string;
+}
+
+export const MaintenancePage: React.FC<MaintenancePageProps> = ({ message }) => {
+  return (
+    <div className="min-h-screen bg-black text-white flex items-center justify-center p-6 relative overflow-hidden">
+      {/* Background Ambience */}
+      <div className="absolute inset-0 z-0">
+        <div className="absolute top-1/-4 left-1/4 w-96 h-96 bg-brand-red/10 rounded-full blur-[120px]" />
+        <div className="absolute bottom-1/4 right-1/4 w-96 h-96 bg-brand-red/5 rounded-full blur-[120px]" />
+      </div>
+      
+      {/* Grid Pattern */}
+      <div 
+        className="absolute inset-0 z-0 opacity-20 pointer-events-none"
+        style={{ backgroundImage: 'linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px)', backgroundSize: '40px 40px' }}
+      />
+
+      <motion.div 
+        initial={{ opacity: 0, y: 20 }}
+        animate={{ opacity: 1, y: 0 }}
+        transition={{ duration: 0.6, ease: [0.16, 1, 0.3, 1] }}
+        className="relative z-10 max-w-xl w-full flex flex-col items-center text-center"
+      >
+        <div className="relative mb-8">
+          <div className="absolute inset-0 bg-brand-red/20 blur-xl rounded-full" />
+          <div className="w-24 h-24 bg-black border border-brand-red/30 rounded-2xl flex items-center justify-center relative overflow-hidden">
+            <div className="absolute inset-0 bg-gradient-to-tr from-brand-red/20 to-transparent" />
+            <Activity className="text-brand-red w-10 h-10 animate-pulse" />
+          </div>
+        </div>
+
+        <h1 className="text-4xl md:text-5xl font-black italic tracking-tighter mb-4 text-white uppercase drop-shadow-sm">
+          SISTEMA EM <span className="text-brand-red">MANUTENÇÃO</span>
+        </h1>
+        
+        <p className="text-zinc-400 text-lg md:text-xl font-medium mb-8 max-w-md mx-auto">
+          {message || 'Estamos realizando atualizações e melhorias no QuantScan IA. Voltaremos em breve com o sistema operando em capacidade máxima.'}
+        </p>
+
+        <div className="glass-card w-full p-6 bg-black/40 border border-brand-red/10 flex flex-col items-center">
+          <div className="flex items-center gap-3 text-brand-red mb-3">
+            <ShieldAlert size={20} />
+            <span className="font-black text-xs tracking-widest uppercase">Status do Servidor Offline</span>
+          </div>
+          <div className="w-full bg-white/5 rounded-full h-1.5 mb-2 overflow-hidden">
+            <div className="bg-brand-red h-full w-full rounded-full animate-pulse" style={{ animationDuration: '2s' }} />
+          </div>
+          <p className="text-[10px] uppercase tracking-widest text-zinc-500 font-bold">Aguardando reconexão institucional</p>
+        </div>
+        
+        <button 
+          onClick={() => window.location.reload()}
+          className="mt-10 flex items-center gap-2 text-zinc-400 hover:text-white transition-colors text-xs font-black uppercase tracking-widest"
+        >
+          <RefreshCw size={14} />
+          Tentar Novamente
+        </button>
+      </motion.div>
+    </div>
+  );
+};

src/components/SignalHistory.tsx

@@ -1,4 +1,5 @@
 import React, { useEffect, useState } from 'react';
+import { motion } from 'motion/react';
 import { Signal, SignalResult, SignalType } from '../types';
 import { cn } from '../lib/utils';
 import { Clock, TrendingUp, TrendingDown, ChevronDown, ChevronUp } from 'lucide-react';
@@ -169,14 +170,20 @@ export const SignalHistory: React.FC = () => {
                     </div>
                     <div className="text-right">
                       <span className="text-[10px] text-zinc-500 font-black uppercase">Resultado</span>
-                      <div className={cn(
+                      <motion.div 
-                        "flex items-center justify-end gap-1 font-black italic uppercase text-sm",
+                        key={signal.result}
-                        signal.result === SignalResult.GAIN ? "text-green-500" : 
+                        initial={{ opacity: 0, scale: 0.8 }}
-                        signal.result === SignalResult.LOSS ? "text-brand-red" : 
+                        animate={{ opacity: 1, scale: 1 }}
-                        "text-zinc-500"
+                        transition={{ duration: 0.3, type: 'spring', bounce: 0.4 }}
-                      )}>
+                        className={cn(
+                          "flex items-center justify-end gap-1 font-black italic uppercase text-sm",
+                          signal.result === SignalResult.GAIN ? "text-green-500" : 
+                          signal.result === SignalResult.LOSS ? "text-brand-red" : 
+                          "text-zinc-500"
+                        )}
+                      >
                         {signal.result}
-                      </div>
+                      </motion.div>
                     </div>
                   </div>