chore: add project files and setup gitignore

reserva-mesa-dashboard/contexts/AuthContext.tsx

@@ -0,0 +1,103 @@
+"use client";
+
+import React, { createContext, useContext, useEffect, useState } from "react";
+import { onAuthStateChanged, User as FirebaseUser, signOut } from "firebase/auth";
+import { ref, get, update } from "firebase/database";
+import { auth, db } from "@/lib/firebase";
+import { RestaurantUser } from "@/types/user";
+import { useRouter } from "next/navigation";
+
+interface AuthContextType {
+  user: RestaurantUser | null;
+  firebaseUser: FirebaseUser | null;
+  loading: boolean;
+  logout: () => Promise<void>;
+  updateRestaurantProfile: (updates: Partial<RestaurantUser>) => Promise<{ success: boolean; error?: any }>;
+}
+
+const AuthContext = createContext<AuthContextType>({
+  user: null,
+  firebaseUser: null,
+  loading: true,
+  logout: async () => {},
+  updateRestaurantProfile: async () => ({ success: false }),
+});
+
+export const AuthProvider = ({ children }: { children: React.ReactNode }) => {
+  const router = useRouter();
+  const [user, setUser] = useState<RestaurantUser | null>(null);
+  const [firebaseUser, setFirebaseUser] = useState<FirebaseUser | null>(null);
+  const [loading, setLoading] = useState(true);
+
+  const buildDocumentId = (email: string) => {
+    return email.replace(/\./g, "_").replace(/@/g, "_at_");
+  };
+
+  useEffect(() => {
+    const unsubscribe = onAuthStateChanged(auth, async (currentUser) => {
+      try {
+        if (currentUser && currentUser.email) {
+          setFirebaseUser(currentUser);
+          const docId = buildDocumentId(currentUser.email);
+          const userRef = ref(db, `Restaurantes/${docId}`);
+          const snapshot = await get(userRef);
+          
+          if (snapshot.exists()) {
+            const data = snapshot.val() as RestaurantUser;
+            if (data.accountType === "ESTABELECIMENTO") {
+              setUser(data);
+            } else {
+              console.warn("User is not a restaurant");
+              setUser(null);
+              await signOut(auth);
+            }
+          } else {
+            console.warn("User record not found in Restaurantes");
+            setUser(null);
+          }
+        } else {
+          setFirebaseUser(null);
+          setUser(null);
+        }
+      } catch (error) {
+        console.error("Auth initialization error:", error);
+      } finally {
+        setLoading(false);
+      }
+    });
+
+    return () => unsubscribe();
+  }, []);
+
+  const logout = async () => {
+    try {
+      await signOut(auth);
+      router.push("/login");
+    } catch (error) {
+      console.error("Erro ao fazer logout:", error);
+    }
+  };
+
+  const updateRestaurantProfile = async (updates: Partial<RestaurantUser>) => {
+    if (!firebaseUser?.email) return { success: false, error: "Utilizador não autenticado" };
+    
+    try {
+      const docId = buildDocumentId(firebaseUser.email);
+      const userRef = ref(db, `Restaurantes/${docId}`);
+      await update(userRef, updates);
+      setUser(prev => prev ? { ...prev, ...updates } : null);
+      return { success: true };
+    } catch (error) {
+      console.error("Erro ao atualizar perfil:", error);
+      return { success: false, error };
+    }
+  };
+
+  return (
+    <AuthContext.Provider value={{ user, firebaseUser, loading, logout, updateRestaurantProfile }}>
+      {children}
+    </AuthContext.Provider>
+  );
+};
+
+export const useAuth = () => useContext(AuthContext);