<?php

function tableNameMatchesBill(string $tableParam, string $stolikNazwa, string $opis): bool
{
    if ($tableParam === '') {
        return true;
    }

    $normalizedTableParam = str_replace('o', '0', strtolower($tableParam));
    $normalizedStolikNazwa = str_replace('o', '0', strtolower($stolikNazwa));
    $normalizedOpis = str_replace('o', '0', strtolower($opis));

    if (
        $normalizedStolikNazwa === $normalizedTableParam ||
        $normalizedOpis === $normalizedTableParam
    ) {
        return true;
    }

    $pattern = '/\b' . preg_quote($normalizedTableParam, '/') . '\b/i';

    return (bool) (preg_match($pattern, $normalizedStolikNazwa) || preg_match($pattern, $normalizedOpis));
}

/**
 * @return array{imie: string, nazwisko: string, nick: string}
 */
function resolveOperatorForTable($conn, string $tableParam): array
{
    $empty = ['imie' => '', 'nazwisko' => '', 'nick' => ''];
    if (!$conn || $tableParam === '') {
        return $empty;
    }

    $tsql = "
        SELECT
            s.Nazwa AS NazwaStolika,
            r.Opis,
            o.Imie,
            o.Nazwisko,
            o.Nick
        FROM dbo.NGastroDTRachunek r
        LEFT JOIN dbo.NGastroStolik s ON s.ID = r.StolikID
        LEFT JOIN dbo.NGastroUzytkownik u ON u.ID = r.UzytkownikOtwierajacyID
        LEFT JOIN dbo.NSysOperator o ON o.ID = u.OperatorID
        WHERE CAST(r.DataOtwarcia AS DATE) = CAST(GETDATE() AS DATE)
          AND r.Status = 0
    ";

    $stmt = sqlsrv_query($conn, $tsql);
    if ($stmt === false) {
        return $empty;
    }

    while ($row = sqlsrv_fetch_array($stmt, SQLSRV_FETCH_ASSOC)) {
        $stolikNazwa = (string) ($row['NazwaStolika'] ?? '');
        $opis = (string) ($row['Opis'] ?? '');
        if (!tableNameMatchesBill($tableParam, $stolikNazwa, $opis)) {
            continue;
        }

        sqlsrv_free_stmt($stmt);

        return [
            'imie' => trim((string) ($row['Imie'] ?? '')),
            'nazwisko' => trim((string) ($row['Nazwisko'] ?? '')),
            'nick' => trim((string) ($row['Nick'] ?? '')),
        ];
    }

    sqlsrv_free_stmt($stmt);

    return $empty;
}