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<?php

declare(strict_types=1);

namespace Doctrine\DBAL;

use Doctrine\DBAL\Driver\IBMDB2;
use Doctrine\DBAL\Driver\Mysqli;
use Doctrine\DBAL\Driver\OCI8;
use Doctrine\DBAL\Driver\PDO;
use Doctrine\DBAL\Driver\PgSQL;
use Doctrine\DBAL\Driver\SQLite3;
use Doctrine\DBAL\Driver\SQLSrv;
use Doctrine\DBAL\Exception\DriverRequired;
use Doctrine\DBAL\Exception\InvalidDriverClass;
use Doctrine\DBAL\Exception\InvalidWrapperClass;
use Doctrine\DBAL\Exception\UnknownDriver;
use SensitiveParameter;

use function array_keys;
use function is_a;

/**
 * Factory for creating {@see Connection} instances.
 *
 * @psalm-type OverrideParams = array{
 * application_name?: string,
 * charset?: string,
 * dbname?: string,
 * defaultTableOptions?: array<string, mixed>,
 * driver?: key-of<self::DRIVER_MAP>,
 * driverClass?: class-string<Driver>,
 * driverOptions?: array<mixed>,
 * host?: string,
 * memory?: bool,
 * password?: string,
 * path?: string,
 * persistent?: bool,
 * port?: int,
 * serverVersion?: string,
 * sessionMode?: int,
 * user?: string,
 * unix_socket?: string,
 * wrapperClass?: class-string<Connection>,
 * }
 * @psalm-type Params = array{
 * application_name?: string,
 * charset?: string,
 * dbname?: string,
 * defaultTableOptions?: array<string, mixed>,
 * driver?: key-of<self::DRIVER_MAP>,
 * driverClass?: class-string<Driver>,
 * driverOptions?: array<mixed>,
 * host?: string,
 * keepReplica?: bool,
 * memory?: bool,
 * password?: string,
 * path?: string,
 * persistent?: bool,
 * port?: int,
 * primary?: OverrideParams,
 * replica?: array<OverrideParams>,
 * serverVersion?: string,
 * sessionMode?: int,
 * user?: string,
 * wrapperClass?: class-string<Connection>,
 * unix_socket?: string,
 * }
 */
final class DriverManager
{
 /**
 * List of supported drivers and their mappings to the driver classes.
 *
 * To add your own driver use the 'driverClass' parameter to {@see DriverManager::getConnection()}.
 */
 private const DRIVER_MAP = [
 'pdo_mysql' => PDO\MySQL\Driver::class,
 'pdo_sqlite' => PDO\SQLite\Driver::class,
 'pdo_pgsql' => PDO\PgSQL\Driver::class,
 'pdo_oci' => PDO\OCI\Driver::class,
 'oci8' => OCI8\Driver::class,
 'ibm_db2' => IBMDB2\Driver::class,
 'pdo_sqlsrv' => PDO\SQLSrv\Driver::class,
 'mysqli' => Mysqli\Driver::class,
 'pgsql' => PgSQL\Driver::class,
 'sqlsrv' => SQLSrv\Driver::class,
 'sqlite3' => SQLite3\Driver::class,
 ];

/**
     * Private constructor. This class cannot be instantiated.
     *
     * @codeCoverageIgnore
     */
    private function __construct()
    {
    }

/**
 * Creates a connection object based on the specified parameters.
 * This method returns a Doctrine\DBAL\Connection which wraps the underlying
 * driver connection.
 *
 * $params must contain at least one of the following.
 *
 * Either 'driver' with one of the array keys of {@see DRIVER_MAP},
 * OR 'driverClass' that contains the full class name (with namespace) of the
 * driver class to instantiate.
 *
 * Other (optional) parameters:
 *
 * user (string):
 * The username to use when connecting.
 *
 * password (string):
 * The password to use when connecting.
 *
 * driverOptions (array):
 * Any additional driver-specific options for the driver. These are just passed
 * through to the driver.
 *
 * wrapperClass:
 * You may specify a custom wrapper class through the 'wrapperClass'
 * parameter but this class MUST inherit from Doctrine\DBAL\Connection.
 *
 * driverClass:
 * The driver class to use.
 *
 * @param Configuration|null $config The configuration to use.
 * @psalm-param Params $params
 *
 * @psalm-return ($params is array{wrapperClass: class-string<T>} ? T : Connection)
 *
 * @template T of Connection
 */
 public static function getConnection(
 #[SensitiveParameter]
 array $params,
 ?Configuration $config = null,
 ): Connection {
 $config ??= new Configuration();
 $driver = self::createDriver($params['driver'] ?? null, $params['driverClass'] ?? null);

foreach ($config->getMiddlewares() as $middleware) {
            $driver = $middleware->wrap($driver);
        }

/** @var class-string<Connection> $wrapperClass */
 $wrapperClass = $params['wrapperClass'] ?? Connection::class;
 if (! is_a($wrapperClass, Connection::class, true)) {
 throw InvalidWrapperClass::new($wrapperClass);
 }

return new $wrapperClass($params, $driver, $config);
    }

/**
 * Returns the list of supported drivers.
 *
 * @return string[]
 * @psalm-return list<key-of<self::DRIVER_MAP>>
 */
 public static function getAvailableDrivers(): array
 {
 return array_keys(self::DRIVER_MAP);
 }

/**
 * @param class-string<Driver>|null $driverClass
 * @param key-of<self::DRIVER_MAP>|null $driver
 */
 private static function createDriver(?string $driver, ?string $driverClass): Driver
 {
 if ($driverClass === null) {
 if ($driver === null) {
 throw DriverRequired::new();
 }

if (! isset(self::DRIVER_MAP[$driver])) {
                throw UnknownDriver::new($driver, array_keys(self::DRIVER_MAP));
            }

$driverClass = self::DRIVER_MAP[$driver];
        } elseif (! is_a($driverClass, Driver::class, true)) {
            throw InvalidDriverClass::new($driverClass);
        }

return new $driverClass();
    }
}