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<?php

declare(strict_types=1);

namespace Doctrine\DBAL\Driver\API\PostgreSQL;

use Doctrine\DBAL\Driver\API\ExceptionConverter as ExceptionConverterInterface;
use Doctrine\DBAL\Driver\Exception;
use Doctrine\DBAL\Exception\ConnectionException;
use Doctrine\DBAL\Exception\DatabaseDoesNotExist;
use Doctrine\DBAL\Exception\DeadlockException;
use Doctrine\DBAL\Exception\DriverException;
use Doctrine\DBAL\Exception\ForeignKeyConstraintViolationException;
use Doctrine\DBAL\Exception\InvalidFieldNameException;
use Doctrine\DBAL\Exception\NonUniqueFieldNameException;
use Doctrine\DBAL\Exception\NotNullConstraintViolationException;
use Doctrine\DBAL\Exception\SchemaDoesNotExist;
use Doctrine\DBAL\Exception\SyntaxErrorException;
use Doctrine\DBAL\Exception\TableExistsException;
use Doctrine\DBAL\Exception\TableNotFoundException;
use Doctrine\DBAL\Exception\UniqueConstraintViolationException;
use Doctrine\DBAL\Query;

use function strpos;

/**
 * @internal
 */
final class ExceptionConverter implements ExceptionConverterInterface
{
    /**
     * @link http://www.postgresql.org/docs/9.4/static/errcodes-appendix.html
     */
    public function convert(Exception $exception, ?Query $query): DriverException
    {
        switch ($exception->getSQLState()) {
            case '40001':
            case '40P01':
                return new DeadlockException($exception, $query);

case '0A000':
                // Foreign key constraint violations during a TRUNCATE operation
                // are considered "feature not supported" in PostgreSQL.
                if (strpos($exception->getMessage(), 'truncate') !== false) {
                    return new ForeignKeyConstraintViolationException($exception, $query);
                }

break;

case '23502':
                return new NotNullConstraintViolationException($exception, $query);

case '23503':
                return new ForeignKeyConstraintViolationException($exception, $query);

case '23505':
                return new UniqueConstraintViolationException($exception, $query);

case '3D000':
                return new DatabaseDoesNotExist($exception, $query);

case '3F000':
                return new SchemaDoesNotExist($exception, $query);

case '42601':
                return new SyntaxErrorException($exception, $query);

case '42702':
                return new NonUniqueFieldNameException($exception, $query);

case '42703':
                return new InvalidFieldNameException($exception, $query);

case '42P01':
                return new TableNotFoundException($exception, $query);

case '42P07':
                return new TableExistsException($exception, $query);

case '08006':
                return new ConnectionException($exception, $query);
        }

// Prior to fixing https://bugs.php.net/bug.php?id=64705 (PHP 7.3.22 and PHP 7.4.10),
        // in some cases (mainly connection errors) the PDO exception wouldn't provide a SQLSTATE via its code.
        // We have to match against the SQLSTATE in the error message in these cases.
        if ($exception->getCode() === 7 && strpos($exception->getMessage(), 'SQLSTATE[08006]') !== false) {
            return new ConnectionException($exception, $query);
        }

return new DriverException($exception, $query);
    }
}