/** receives a new item or item update, returns the delay of the change getting here */
function remoteItemUpdate($item)
{
global $nodeId;
$db = $this->db;
$id = new Id($item['station'], $item['entry_date'], $item['track']);
$where = $id->whereClause();
$where2 = $id->whereClause2('i');
// get list of db fields
$tableInfo = $db->tableInfo('sotf_items', DB_TABLEINFO_ORDER);
$fields = $tableInfo['order'];
// TODO: needs synchronization if two different requests try to insert the same thing parallelly
$existing = $db->getRow("SELECT i.*, s.node FROM sotf_items i, sotf_stations s WHERE i.station=s.station AND {$where2}");
if (empty($existing)) {
foreach ($item as $key => $value) {
if ($value && array_key_exists($key, $fields)) {
$value = addslashes(stripslashes($value));
$sql1 .= "{$key}, ";
$sql2 .= " '{$value}', ";
}
}
$sql1 = substr($sql1, 0, strlen($sql1) - 2);
// chop trailing comma
$sql2 = substr($sql2, 0, strlen($sql2) - 2);
// chop trailing comma
$sql = "INSERT INTO sotf_items ( {$sql1} ) VALUES ( {$sql2} )";
$res = $db->query($sql);
if (DB::isError($res)) {
die($res->getMessage());
//return -1;
}
} else {
// need UPDATE instead of INSERT
if ($existing['node'] == $nodeId) {
return 0;
}
$t1 = strtotime($item['last_change']);
$t2 = strtotime($existing['last_change']);
if ($t1 <= $t2) {
return 0;
}
$sql = "UPDATE sotf_items SET ";
foreach ($item as $key => $value) {
if ($value && array_key_exists($key, $fields) && $key != 'station' && $key != 'entry_date' && $key != 'track' && $key != 'id') {
$value = addslashes(stripslashes($value));
$sql .= " {$key}='{$value}', ";
}
}
$sql = substr($sql, 0, strlen($sql) - 2);
// chop trailing comma
$sql = $sql . " WHERE {$where}";
$res = $db->query($sql);
if (DB::isError($res)) {
die($res->getMessage());
//return -1;
}
$updated = true;
}
debug("item changed?", $item);
$t1 = strtotime($item['last_change']);
$now = time();
return $now - $t1;
}