// Cloudflare Worker Script (worker.js)

const UPTIMEROBOT_API_ENDPOINT = 'https://api.uptimerobot.com/v2/getMonitors';
// Replace with the ID of your Plex monitor in UptimeRobot
// You can find this ID in UptimeRobot dashboard by clicking on the monitor
const PLEX_MONITOR_ID = '800933230'; // <<< IMPORTANT: Replace this

addEventListener('fetch', event => {
    event.respondWith(handleRequest(event.request, event.env, event.ctx));
});

async function handleRequest(request, env, ctx) {
    // Only allow GET requests to avoid abuse
    if (request.method !== 'GET') {
        return new Response('Method Not Allowed', { status: 405 });
    }

    // Check for the secret API key environment variable
    const API_KEY = env.UPTIMEROBOT_API_KEY; // This comes from Cloudflare Worker secrets
    if (!API_KEY) {
        return new Response('Configuration Error: API Key or Monitor ID missing', { status: 500 });
    }

    try {
        const formData = new FormData();
        formData.append('api_key', API_KEY);
        formData.append('monitors', PLEX_MONITOR_ID); // Request only your specific monitor
        formData.append('format', 'json');
        formData.append('logs', '0'); // Don't need logs for just status
        formData.append('customUptimeRatio', '7'); // Get 7-day uptime ratio, optional

        const response = await fetch(UPTIMEROBOT_API_ENDPOINT, {
            method: 'POST', // UptimeRobot API uses POST even for 'get' actions
            body: formData,
        });

        const data = await response.json();

        if (data.stat === 'ok' && data.monitors && data.monitors.length > 0) {
            const monitor = data.monitors[0];
            let status = 'offline'; // Default to offline
            let statusText = 'Offline';

            // UptimeRobot Status Codes:
            // 0 = Paused
            // 1 = Not yet checked
            // 2 = Up
            // 8 = Seems Down (UptimeRobot is still checking)
            // 9 = Down
            if (monitor.status === 2) {
                status = 'online';
                statusText = 'Online';
            } else if (monitor.status === 0) {
                 status = 'paused';
                 statusText = 'Paused';
            } else if (monitor.status === 1 || monitor.status === 8) {
                status = 'checking';
                statusText = 'Checking...';
            } else {
                status = 'offline';
                statusText = 'Offline';
            }

            return new Response(JSON.stringify({
                status: status,
                statusText: statusText,
                uptimeRatio: monitor.customuptimeratio, // If requested
                lastChecked: new Date().toISOString()
            }), {
                headers: {
                    'Content-Type': 'application/json',
                    'Access-Control-Allow-Origin': 'https://noplexzone.com', // Replace with your actual domain
                    'Access-Control-Allow-Methods': 'GET',
                    'Cache-Control': 'no-store, no-cache, must-revalidate, proxy-revalidate',
                    'Pragma': 'no-cache',
                    'Expires': '0',
                },
                status: 200
            });
        } else {
            console.error('UptimeRobot API error:', data);
            return new Response(JSON.stringify({ status: 'error', message: 'Failed to retrieve monitor status from UptimeRobot.' }), {
                headers: { 'Content-Type': 'application/json', 'Access-Control-Allow-Origin': 'https://noplexzone.com' },
                status: 500
            });
        }
    } catch (error) {
        console.error('Worker error:', error);
        return new Response(JSON.stringify({ status: 'error', message: `Server error: ${error.message}` }), {
            headers: { 'Content-Type': 'application/json', 'Access-Control-Allow-Origin': 'https://noplexzone.com' },
            status: 500
        });
    }
}