<?php
require_once __DIR__ . '/../db/config.php';

header('Content-Type: application/json');

try {
    $db = db();
    
    $urls = $db->query("SELECT * FROM urls WHERE is_active = 1")->fetchAll();
    
    $data = [];
    foreach ($urls as $url) {
        // Fetch last 60 logs for the candlestick/sparkline
        $stmt = $db->prepare("SELECT status, response_time, checked_at FROM logs WHERE url_id = ? ORDER BY checked_at DESC LIMIT 60");
        $stmt->execute([$url['id']]);
        $logs = array_reverse($stmt->fetchAll());
        
        // Calculate uptime percentage (last 24h or total)
        $stmt = $db->prepare("SELECT 
            COUNT(*) as total,
            SUM(CASE WHEN status = 'up' THEN 1 ELSE 0 END) as up_count
            FROM logs WHERE url_id = ? AND checked_at > DATE_SUB(NOW(), INTERVAL 24 HOUR)");
        $stmt->execute([$url['id']]);
        $stats = $stmt->fetch();
        $uptime = ($stats['total'] > 0) ? round(($stats['up_count'] / $stats['total']) * 100, 2) : 100;

        $data[] = [
            'id' => $url['id'],
            'name' => $url['name'],
            'url' => $url['url'],
            'status' => $url['status'],
            'last_check' => $url['last_check'],
            'response_time' => $url['response_time'],
            'uptime' => $uptime,
            'history' => $logs
        ];
    }
    
    // Check if monitor is running
    $isMonitorRunning = false;
    $lockFile = __DIR__ . '/../monitor.lock';
    if (file_exists($lockFile)) {
        $fp = fopen($lockFile, 'r');
        if (!flock($fp, LOCK_EX | LOCK_NB)) {
            $isMonitorRunning = true;
        }
        fclose($fp);
    }

    echo json_encode([
        'success' => true,
        'monitor_running' => $isMonitorRunning,
        'data' => $data
    ]);
} catch (Exception $e) {
    echo json_encode(['success' => false, 'error' => $e->getMessage()]);
}