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

$data = readJsonBody();

$hardwareId = trim($data['HardwareId'] ?? '');
if ($hardwareId === '') apiAbort(['OK' => false, 'ERROR' => 'missing_hardware_id', 'MESSAGE' => 'HardwareId is required']);

$beaconUUID = trim($data['UUID'] ?? '');
if ($beaconUUID === '') apiAbort(['OK' => false, 'ERROR' => 'missing_uuid', 'MESSAGE' => 'UUID is required']);

$major = (int) ($data['Major'] ?? 0);
$minor = (int) ($data['Minor'] ?? 0);
$rssi = isset($data['RSSI']) && is_numeric($data['RSSI']) ? (int) $data['RSSI'] : null;

$seenAt = date('Y-m-d H:i:s');
if (!empty($data['SeenAt'])) {
    try { $seenAt = (new DateTime($data['SeenAt']))->format('Y-m-d H:i:s'); } catch (Exception $e) {}
}

try {
    $qHW = queryOne("
        SELECT ID, BusinessID, ServicePointID, ShardUUID, Major, Minor, Status
        FROM BeaconHardware WHERE HardwareId = ? LIMIT 1
    ", [$hardwareId]);

    if (!$qHW) {
        apiAbort(['OK' => false, 'ERROR' => 'hardware_not_found', 'MESSAGE' => 'Beacon hardware not registered']);
    }

    if (strcasecmp($qHW['ShardUUID'], $beaconUUID) !== 0) {
        apiAbort(['OK' => false, 'ERROR' => 'uuid_mismatch', 'MESSAGE' => 'Beacon is broadcasting wrong UUID',
            'ExpectedUUID' => $qHW['ShardUUID'], 'BroadcastUUID' => $beaconUUID]);
    }
    if ((int) $qHW['Major'] !== $major) {
        apiAbort(['OK' => false, 'ERROR' => 'major_mismatch', 'MESSAGE' => 'Beacon is broadcasting wrong Major',
            'ExpectedMajor' => (int) $qHW['Major'], 'BroadcastMajor' => $major]);
    }
    if ((int) $qHW['Minor'] !== $minor) {
        apiAbort(['OK' => false, 'ERROR' => 'minor_mismatch', 'MESSAGE' => 'Beacon is broadcasting wrong Minor',
            'ExpectedMinor' => (int) $qHW['Minor'], 'BroadcastMinor' => $minor]);
    }

    $setClauses = ["Status = 'verified'", "VerifiedAt = ?", "LastSeenAt = ?", "UpdatedAt = NOW()"];
    $params = [$seenAt, $seenAt];

    if ($rssi !== null) {
        $setClauses[] = "LastRssi = ?";
        $params[] = $rssi;
    }

    $params[] = $hardwareId;
    queryTimed("UPDATE BeaconHardware SET " . implode(', ', $setClauses) . " WHERE HardwareId = ?", $params);

    jsonResponse([
        'OK' => true,
        'BeaconHardwareID' => (int) $qHW['ID'],
        'HardwareId' => $hardwareId,
        'BusinessID' => (int) $qHW['BusinessID'],
        'ServicePointID' => (int) $qHW['ServicePointID'],
        'Status' => 'verified',
        'VerifiedAt' => (new DateTime($seenAt))->format('Y-m-d\TH:i:s\Z'),
    ]);

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