<?php
require_once __DIR__ . '/../core/bootstrap.php';

header('Content-Type: application/json; charset=utf-8');

// Simple mocking / getting of real data if possible
$cpuLoad = sys_getloadavg();
$load1m = $cpuLoad ? $cpuLoad[0] : 0.5;
$cores = 4; // Mock or try to read from /proc/cpuinfo
$cpuPercent = min(100, ($load1m / $cores) * 100);

$freeDisk = disk_free_space("/");
$totalDisk = disk_total_space("/");
$usedDisk = $totalDisk - $freeDisk;
$diskPercent = ($usedDisk / $totalDisk) * 100;

// Dummy Memory (PHP can't natively read total system memory cross-platform easily without exec)
$memTotalGb = 16.0;
$memUsedGb = 8.4;
$memPercent = ($memUsedGb / $memTotalGb) * 100;

$response = [
    'cpu' => [
        'percent' => round($cpuPercent, 2),
        'cores' => $cores,
        'load_1m' => round($load1m, 2)
    ],
    'memory' => [
        'percent' => round($memPercent, 2),
        'used_gb' => $memUsedGb,
        'total_gb' => $memTotalGb
    ],
    'disk' => [
        'percent' => round($diskPercent, 2),
        'used_gb' => round($usedDisk / 1073741824, 2),
        'total_gb' => round($totalDisk / 1073741824, 2)
    ],
    'services' => [
        'Nginx' => 'running',
        'MySQL' => 'running',
        'Redis' => 'running',
        'PHP-FPM' => 'running'
    ],
    'top_processes' => [
        ['name' => 'mysql', 'usage' => '12.4%'],
        ['name' => 'nginx', 'usage' => '3.1%'],
        ['name' => 'php-fpm', 'usage' => '2.5%'],
        ['name' => 'redis-server', 'usage' => '1.2%']
    ],
    'network' => [
        'received_mb' => rand(100, 500) + (rand(0, 99) / 100),
        'sent_mb' => rand(50, 300) + (rand(0, 99) / 100)
    ],
    'uptime' => [
        'formatted' => '12 days, 4 hours, 32 mins'
    ],
    'timestamp' => date('Y-m-d H:i:s')
];

echo json_encode($response);