1 files changed, 79 insertions, 0 deletions
diff --git a/web/src/context/AuthContext.tsx b/web/src/context/AuthContext.tsx
new file mode 100644
index 0000000..f86a940
--- /dev/null
+++ b/web/src/context/AuthContext.tsx
@@ -0,0 +1,79 @@
+/**
+ * AuthContext.tsx
+ *
+ * Contexto global de autenticação.
+ * Persiste o JWT no localStorage e expõe o estado do usuário logado.
+ */
+
+import {
+  createContext,
+  useContext,
+  useState,
+  useCallback,
+  type ReactNode,
+} from 'react';
+import type { UserResponse } from '@/lib/api';
+
+// ─── Tipos ────────────────────────────────────────────────────────────────────
+
+interface AuthState {
+  user:            UserResponse | null;
+  token:           string | null;
+  isAuthenticated: boolean;
+  login:           (token: string, user: UserResponse) => void;
+  logout:          () => void;
+}
+
+// ─── Chave no localStorage ────────────────────────────────────────────────────
+
+const TOKEN_KEY = 'helpdesk:token';
+const USER_KEY  = 'helpdesk:user';
+
+// ─── Context ──────────────────────────────────────────────────────────────────
+
+const AuthContext = createContext<AuthState | null>(null);
+
+// ─── Provider ─────────────────────────────────────────────────────────────────
+
+export function AuthProvider({ children }: { children: ReactNode }) {
+  // Inicializa com dados persistidos (restaura sessão ao recarregar)
+  const [token, setToken] = useState<string | null>(
+    () => localStorage.getItem(TOKEN_KEY),
+  );
+  const [user, setUser] = useState<UserResponse | null>(() => {
+    const stored = localStorage.getItem(USER_KEY);
+    return stored ? (JSON.parse(stored) as UserResponse) : null;
+  });
+
+  const login = useCallback((newToken: string, newUser: UserResponse) => {
+    localStorage.setItem(TOKEN_KEY, newToken);
+    localStorage.setItem(USER_KEY, JSON.stringify(newUser));
+    setToken(newToken);
+    setUser(newUser);
+  }, []);
+
+  const logout = useCallback(() => {
+    localStorage.removeItem(TOKEN_KEY);
+    localStorage.removeItem(USER_KEY);
+    setToken(null);
+    setUser(null);
+  }, []);
+
+  return (
+    <AuthContext.Provider
+      value={{ user, token, isAuthenticated: Boolean(token), login, logout }}
+    >
+      {children}
+    </AuthContext.Provider>
+  );
+}
+
+// ─── Hook ─────────────────────────────────────────────────────────────────────
+
+export function useAuth(): AuthState {
+  const ctx = useContext(AuthContext);
+  if (!ctx) {
+    throw new Error('useAuth deve ser usado dentro de <AuthProvider>');
+  }
+  return ctx;
+}