import axios from 'axios';
import { useAppConfig } from './useAppConfig';

// Singleton instances
const apiClient = axios.create();
const profilesApiClient = axios.create();

// Helper to get base URLs
const getBaseUrl = (config) => config?.api_base_url || 'http://localhost:5001/api/v1';
const getProfilesBaseUrl = (config) => config?.profiles_api_base_url || 'http://localhost:8000';

// Add interceptors to handle Auth and Dynamic Base URLs
const setupInterceptors = (instance, getBase) => {
    instance.interceptors.request.use((reqConfig) => {
        const { config } = useAppConfig();
        reqConfig.baseURL = getBase(config.value);

        const token = localStorage.getItem('ovpmon_token');
        if (token) {
            reqConfig.headers.Authorization = `Bearer ${token}`;
        }
        return reqConfig;
    });

    instance.interceptors.response.use(
        response => response,
        error => {
            if (error.response && error.response.status === 401) {
                localStorage.removeItem('ovpmon_token');
                localStorage.removeItem('ovpmon_user');
                // Redirecting using window.location for absolute refresh
                if (window.location.pathname !== '/login') {
                    window.location.href = '/login';
                }
            }
            return Promise.reject(error);
        }
    );
};

setupInterceptors(apiClient, getBaseUrl);
setupInterceptors(profilesApiClient, getProfilesBaseUrl);

export function useApi() {
    const fetchStats = async () => {
        const res = await apiClient.get('/stats');
        return res.data;
    };

    const fetchClientHistory = async (clientId, range) => {
        const res = await apiClient.get(`/stats/${clientId}`, { params: { range } });
        return res.data;
    };

    const fetchAnalytics = async (range) => {
        const res = await apiClient.get('/analytics', { params: { range } });
        return res.data;
    };

    const fetchCertificates = async () => {
        const res = await profilesApiClient.get('/profiles');
        return res.data;
    };


    return {
        apiClient,
        profilesApiClient,
        fetchStats,
        fetchClientHistory,
        fetchAnalytics,
        fetchCertificates
    };
}