const SERVICES = {
    api: 'https://api.mebboat.it/health',
    storage: 'https://storage.mebboat.it/health',
    auth: 'https://auth.mebboat.it/health',
    realtime: 'https://realtime.mebboat.it/health',
};

/**
 * Checks the health of a single service.
 * @param {string} url - Health endpoint URL
 * @returns {Promise<{ok: boolean, status: string}>}
 */
async function checkService(url) {
    try {
        const response = await fetch(url, {
            headers: { Accept: "application/json" }
        });

        if (!response.ok) {
            return { ok: false, status: `HTTP ${response.status}` };
        }

        const data = await response.json().catch(() => null);
        const isOk = data?.status === "ok";
        return { ok: isOk, status: isOk ? 'online' : 'offline' };
    } catch (err) {
        return { ok: false, status: `error: ${err.message}` };
    }
}

/**
 * Checks all MEB cloud services in parallel.
 * @returns {Promise<Object>} Map of service name -> health result
 */
async function checkAllServices() {
    const entries = Object.entries(SERVICES);
    const results = await Promise.all(
        entries.map(async ([name, url]) => {
            const result = await checkService(url);
            return [name, result];
        })
    );
    return Object.fromEntries(results);
}

module.exports = {
    SERVICES,
    checkService,
    checkAllServices
};