const token = localStorage.getItem('token');

export function getToken() {
    return token;
}

export function isAuthenticatedAsAdmin() {
    const role = localStorage.getItem('role');
    return token && role === 'ADMIN';
}

function getHeaders(contentType = 'application/json') {
    const headers = {
        'Authorization': `Bearer ${token}`
    };
    if (contentType) {
        headers['Content-Type'] = contentType;
    }
    return headers;
}

export async function apiFetch(endpoint, method = 'GET', body = null) {
    const options = {
        method,
        headers: getHeaders(body ? 'application/json' : null)
    };

    if (body) {
        options.body = JSON.stringify(body);
    }

    const response = await fetch(endpoint, options);

    // Si status is 401 or 403, we should probably redirect to login, 
    // but for now let's just throw an error or handle it in the view.

    let data;
    try {
        data = await response.json();
    } catch (e) {
        data = null;
    }

    if (!response.ok) {
        throw new Error(data?.message || `Ошибка HTTP: ${response.status}`);
    }

    return data;
}

// Shortcut methods
export const api = {
    get: (url) => apiFetch(url, 'GET'),
    post: (url, body) => apiFetch(url, 'POST', body),
    put: (url, body) => apiFetch(url, 'PUT', body),
    delete: (url, body = null) => apiFetch(url, 'DELETE', body)
};