import { create } from "zustand";
import { persist } from "zustand/middleware";
import axios from "axios";
import * as api from "../api/auth";

export const useAuthStore = create(
  persist(
    (set, get) => {
      // Axios interceptor for handling 401/403
      axios.interceptors.response.use(
        (response) => response,
        (error) => {
          if (error.response && (error.response.status === 401 || error.response.status === 403)) {
            set({ user_id: null, token: null, isLoading: false });
            delete axios.defaults.headers.common["Authorization"];
            // Redirect to login using window.location for global interceptor
            if (window.location.pathname !== '/login') {
                window.location.href = '/login';
            }
          }
          return Promise.reject(error);
        }
      );

      return {
        user_id: null,
        token: null,
        isLoading: false,
        error: null,

        signIn: async (email, password) => {
          set({ isLoading: true, error: null });
          try {
            const response = await api.login({ email, password });
            set({ user_id: response.user_id, token: response.token, isLoading: false });
          } catch (error) {
            set({
              error: error.response?.data?.message || error.message,
              isLoading: false,
            });
            throw error;
          }
        },

        signUp: async (userData) => {
          set({ isLoading: true, error: null });
          try {
            const response = await api.register(userData);
            set({ user_id: response.user_id, token: response.token, isLoading: false });
          } catch (error) {
            set({
              error: error.response?.data?.message || error.message,
              isLoading: false,
            });
            throw error;
          }
        },

        signInWithGoogle: async (googleToken) => {
          set({ isLoading: true, error: null });
          try {
            const response = await api.googleLogin(googleToken);
            set({ user_id: response.user_id, token: response.token, isLoading: false });
          } catch (error) {
            set({
              error: error.response?.data?.message || error.message,
              isLoading: false,
            });
            throw error;
          }
        },

        signOut: async () => {
          const { token } = get();
          try {
            await api.logout(token);
          } catch (error) {
            console.error("Logout error:", error);
          } finally {
            set({ user_id: null, token: null });
            window.location.href = '/login';
          }
        },
      };
    },
    {
      name: "auth-storage",
    }
  )
);