<?php
header('Content-Type: application/json');
require_once dirname(__DIR__) . '/include/monitor.php';
require_once dirname(__DIR__) . '/include/media.php';

// CPU% — shares /tmp/vv_cpu_stat.json with vv_cpu_per_core() so both read the same baseline
$cpuPct = vv_cpu_per_core()['overall'] ?? 0;

// RAM%
$res        = vv_system_resources();
$ramTotalMb = $res['ram_total_mb'];
$ramUsedMb  = $ramTotalMb - $res['ram_free_mb'];
$ramPct     = $ramTotalMb > 0 ? (int)round($ramUsedMb / $ramTotalMb * 100) : 0;

// Fallback state (fast file read, no exec)
$fbRaw         = @file_get_contents(STATE_DIR . '/fallback_state.db') ?: '';
$fbData        = vv_parse_kv_db($fbRaw);
$fallbackState = $fbData['state'] ?? 'UNKNOWN';

// Partner
$partner = vv_partner_state();
$peers   = array_values(array_filter($partner['hosts'], fn($h) => !$h['is_me']));

// Media sessions — cached 30s so the HTTP calls don't hold up every snapshot poll
$mediaCache     = vv_cache_read('snap_media', 30);
if (!$mediaCache) {
    $media      = vv_media_sessions();
    $mediaCache = [
        'stream_count'    => count($media['sessions']),
        'transcode_count' => count(array_filter($media['sessions'], fn($s) => !empty($s['is_tc']))),
    ];
    vv_cache_write('snap_media', $mediaCache);
}
$streamCount    = (int)($mediaCache['stream_count']    ?? 0);
$transcodeCount = (int)($mediaCache['transcode_count'] ?? 0);

echo json_encode([
    'cpu_pct'         => $cpuPct,
    'ram_pct'         => $ramPct,
    'ram_used_mb'     => $ramUsedMb,
    'ram_total_mb'    => $ramTotalMb,
    'fallback'        => $fallbackState,
    'partner_enabled' => $partner['enabled'],
    'peers'           => $peers,
    'stream_count'    => $streamCount,
    'transcode_count' => $transcodeCount,
]);