<?php
require_once __DIR__ . '/../helpers.php';
runAuth();

try {
    $sinceId = (int) ($_GET['since'] ?? 0);

    $sql = "SELECT ID, UUID FROM BeaconShards WHERE IsActive = 1";
    $params = [];
    if ($sinceId > 0) {
        $sql .= " AND ID > ?";
        $params[] = $sinceId;
    }
    $sql .= " ORDER BY ID ASC";

    $rows = queryTimed($sql, $params);

    $shards = [];
    $maxId = 0;
    foreach ($rows as $r) {
        $shards[] = ['ID' => (int) $r['ID'], 'UUID' => $r['UUID']];
        if ((int) $r['ID'] > $maxId) $maxId = (int) $r['ID'];
    }

    jsonResponse([
        'OK' => true,
        'Version' => $maxId,
        'Count' => count($shards),
        'Shards' => $shards,
    ]);

} catch (Exception $e) {
    jsonResponse(['OK' => false, 'ERROR' => 'server_error', 'MESSAGE' => $e->getMessage()]);
}