riseup-squad20/susconecta/hooks/useAuth.tsx

"use client";
import {
  createContext,
  useContext,
  useEffect,
  useState,
  ReactNode,
  useCallback,
  useMemo,
  useRef,
} from "react";
import { useRouter } from "next/navigation";
import { loginUser, logoutUser, AuthenticationError } from "@/lib/auth";
import { isExpired, parseJwt } from "@/lib/jwt";
import { httpClient } from "@/lib/http";
import type {
  AuthContextType,
  UserData,
  AuthStatus,
  UserType,
} from "@/types/auth";
import { AUTH_STORAGE_KEYS, LOGIN_ROUTES } from "@/types/auth";

const AuthContext = createContext<AuthContextType | undefined>(undefined);

export function AuthProvider({ children }: { children: ReactNode }) {
  const [authStatus, setAuthStatus] = useState<AuthStatus>("loading");
  const [user, setUser] = useState<UserData | null>(null);
  const [token, setToken] = useState<string | null>(null);
  const router = useRouter();
  const hasInitialized = useRef(false);

  // Utilitários de armazenamento memorizados
  const clearAuthData = useCallback(() => {
    if (typeof window !== "undefined") {
      localStorage.removeItem(AUTH_STORAGE_KEYS.TOKEN);
      localStorage.removeItem(AUTH_STORAGE_KEYS.USER);
      localStorage.removeItem(AUTH_STORAGE_KEYS.REFRESH_TOKEN);
      // Manter USER_TYPE para redirecionamento correto
    }
    setUser(null);
    setToken(null);
    setAuthStatus("unauthenticated");
    console.log("[AUTH] Dados de autenticação limpos - logout realizado");
  }, []);

  const saveAuthData = useCallback(
    (accessToken: string, userData: UserData, refreshToken?: string) => {
      try {
        if (typeof window !== "undefined") {
          // Persistir dados de forma atômica
          localStorage.setItem(AUTH_STORAGE_KEYS.TOKEN, accessToken);
          localStorage.setItem(
            AUTH_STORAGE_KEYS.USER,
            JSON.stringify(userData),
          );
          localStorage.setItem(AUTH_STORAGE_KEYS.USER_TYPE, userData.userType);

          if (refreshToken) {
            localStorage.setItem(AUTH_STORAGE_KEYS.REFRESH_TOKEN, refreshToken);
          }
        }

        setToken(accessToken);
        setUser(userData);
        setAuthStatus("authenticated");

        console.log("[AUTH] LOGIN realizado - Dados salvos!", {
          userType: userData.userType,
          email: userData.email,
          timestamp: new Date().toLocaleTimeString(),
        });
      } catch (error) {
        console.error("[AUTH] Erro ao salvar dados:", error);
        clearAuthData();
      }
    },
    [clearAuthData],
  );

  // Verificação inicial de autenticação
  const checkAuth = useCallback(async (): Promise<void> => {
    if (typeof window === "undefined") {
      setAuthStatus("unauthenticated");
      return;
    }

    try {
      const storedToken = localStorage.getItem(AUTH_STORAGE_KEYS.TOKEN);
      const storedUser = localStorage.getItem(AUTH_STORAGE_KEYS.USER);

      console.log("[AUTH] Verificando sessão...", {
        hasToken: !!storedToken,
        hasUser: !!storedUser,
        timestamp: new Date().toLocaleTimeString(),
      });

      // Pequeno delay para visualizar logs
      await new Promise((resolve) => setTimeout(resolve, 800));

      if (!storedToken || !storedUser) {
        console.log("[AUTH] Dados ausentes - sessão inválida");
        await new Promise((resolve) => setTimeout(resolve, 500));
        clearAuthData();
        return;
      }

      // Verificar se token está expirado
      if (isExpired(storedToken)) {
        console.log("[AUTH] Token expirado - tentando renovar...");
        await new Promise((resolve) => setTimeout(resolve, 1000));

        const refreshToken = localStorage.getItem(
          AUTH_STORAGE_KEYS.REFRESH_TOKEN,
        );
        if (refreshToken && !isExpired(refreshToken)) {
          // Tentar renovar via HTTP client (que já tem a lógica)
          try {
            await httpClient.get("/auth/v1/me"); // Trigger refresh se necessário

            // Se chegou aqui, refresh foi bem-sucedido
            const newToken = localStorage.getItem(AUTH_STORAGE_KEYS.TOKEN);
            const userData = JSON.parse(storedUser) as UserData;

            if (newToken && newToken !== storedToken) {
              setToken(newToken);
              setUser(userData);
              setAuthStatus("authenticated");
              console.log("[AUTH] Token RENOVADO automaticamente!");
              await new Promise((resolve) => setTimeout(resolve, 800));
              return;
            }
          } catch (refreshError) {
            console.log("❌ [AUTH] Falha no refresh automático");
            await new Promise((resolve) => setTimeout(resolve, 400));
          }
        }

        clearAuthData();
        return;
      }

      // Restaurar sessão válida
      const userData = JSON.parse(storedUser) as UserData;
      setToken(storedToken);
      setUser(userData);
      setAuthStatus("authenticated");

      console.log("[AUTH] Sessão RESTAURADA com sucesso!", {
        userId: userData.id,
        userType: userData.userType,
        email: userData.email,
        timestamp: new Date().toLocaleTimeString(),
      });
      await new Promise((resolve) => setTimeout(resolve, 1000));
    } catch (error) {
      console.error("[AUTH] Erro na verificação:", error);
      clearAuthData();
    }
  }, [clearAuthData]);

  // Login memoizado
  const login = useCallback(
    async (
      email: string,
      password: string,
      userType: UserType,
    ): Promise<boolean> => {
      try {
        console.log("[AUTH] Iniciando login:", { email, userType });

        const response = await loginUser(email, password, userType);

        saveAuthData(
          response.access_token,
          response.user,
          response.refresh_token,
        );

        console.log("[AUTH] Login realizado com sucesso");
        return true;
      } catch (error) {
        console.error("[AUTH] Erro no login:", error);

        if (error instanceof AuthenticationError) {
          throw error;
        }

        throw new AuthenticationError(
          "Erro inesperado durante o login",
          "UNKNOWN_ERROR",
          error,
        );
      }
    },
    [saveAuthData],
  );

  // Logout memoizado
  const logout = useCallback(async (): Promise<void> => {
    console.log("[AUTH] Iniciando logout");

    const currentUserType =
      user?.userType ||
      (typeof window !== "undefined"
        ? localStorage.getItem(AUTH_STORAGE_KEYS.USER_TYPE)
        : null) ||
      "profissional";

    try {
      if (token) {
        await logoutUser(token);
        console.log("[AUTH] Logout realizado na API");
      }
    } catch (error) {
      console.error("[AUTH] Erro no logout da API:", error);
    }

    clearAuthData();

    // Redirecionamento baseado no tipo de usuário
    const loginRoute = LOGIN_ROUTES[currentUserType as UserType] || "/login";

    console.log("[AUTH] Redirecionando para:", loginRoute);

    if (typeof window !== "undefined") {
      window.location.href = loginRoute;
    }
  }, [user?.userType, token, clearAuthData]);

  // Refresh token memoizado (usado pelo HTTP client)
  const refreshToken = useCallback(async (): Promise<boolean> => {
    // Esta função é principalmente para compatibilidade
    // O refresh real é feito pelo HTTP client
    return false;
  }, []);

  // Getters memorizados
  const contextValue = useMemo(
    () => ({
      authStatus,
      user,
      token,
      login,
      logout,
      refreshToken,
    }),
    [authStatus, user, token, login, logout, refreshToken],
  );

  // Inicialização única
  useEffect(() => {
    if (!hasInitialized.current && typeof window !== "undefined") {
      hasInitialized.current = true;
      checkAuth();
    }
  }, [checkAuth]);

  return (
    <AuthContext.Provider value={contextValue}>{children}</AuthContext.Provider>
  );
}

export const useAuth = () => {
  const context = useContext(AuthContext);
  if (context === undefined) {
    throw new Error("useAuth deve ser usado dentro de AuthProvider");
  }
  return context;
};