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<?php

namespace Doctrine\DBAL\Portability;

use Doctrine\DBAL\ColumnCase;
use Doctrine\DBAL\Driver as DriverInterface;
use Doctrine\DBAL\Driver\Middleware\AbstractDriverMiddleware;
use LogicException;
use PDO;

use function method_exists;

use const CASE_LOWER;
use const CASE_UPPER;

final class Driver extends AbstractDriverMiddleware
{
    private int $mode;

private int $case;

public function __construct(DriverInterface $driver, int $mode, int $case)
    {
        parent::__construct($driver);

$this->mode = $mode;
        $this->case = $case;
    }

/**
     * {@inheritDoc}
     */
    public function connect(array $params)
    {
        $connection = parent::connect($params);

$portability = (new OptimizeFlags())(
            $this->getDatabasePlatform(),
            $this->mode,
        );

$case = null;

if ($this->case !== 0 && ($portability & Connection::PORTABILITY_FIX_CASE) !== 0) {
            $nativeConnection = null;
            if (method_exists($connection, 'getNativeConnection')) {
                try {
                    $nativeConnection = $connection->getNativeConnection();
                } catch (LogicException $e) {
                }
            }

if ($nativeConnection instanceof PDO) {
                $portability &= ~Connection::PORTABILITY_FIX_CASE;
                $nativeConnection->setAttribute(PDO::ATTR_CASE, $this->case);
            } else {
                $case = $this->case === ColumnCase::LOWER ? CASE_LOWER : CASE_UPPER;
            }
        }

$convertEmptyStringToNull = ($portability & Connection::PORTABILITY_EMPTY_TO_NULL) !== 0;
        $rightTrimString          = ($portability & Connection::PORTABILITY_RTRIM) !== 0;

if (! $convertEmptyStringToNull && ! $rightTrimString && $case === null) {
            return $connection;
        }

return new Connection(
            $connection,
            new Converter($convertEmptyStringToNull, $rightTrimString, $case),
        );
    }
}