/
Config.php
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/
Config.php
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<?php
declare(strict_types=1);
namespace MicroDeps\PDO;
use MicroDeps\PDO\Exception\ConfigException;
final class Config
{
public const KEY_DB_SERVER_USERNAME = 'DB_SERVER_USERNAME';
public const KEY_DB_SERVER_PASSWORD = 'DB_SERVER_PASSWORD';
public const KEY_DB_DATABASE = 'DB_DATABASE';
public const KEY_SQLITE_PATH = 'DB_SQLITE_PATH';
public const KEY_DB_TYPE = 'DB_TYPE';
public const DB_TYPE_MYSQL = 'mysql';
public const DB_TYPE_SQLITE_FILE = 'sqlite';
public const DEFAULT_DB_TYPE = self::DB_TYPE_MYSQL;
public const KEY_DB_CHARSET = 'DB_CHARSET';
public const DEFAULT_DB_CHARSET = 'utf8mb4';
public const KEY_DB_SERVER = 'DB_SERVER';
public const DEFAULT_DB_SERVER = 'localhost';
public const DEFAULT_DB_PORT = '3306';
public const KEY_DB_PORT = 'DB_PORT';
public const KEYS_WITH_DEFAULTS = [
self::KEY_DB_TYPE => self::DEFAULT_DB_TYPE,
self::KEY_DB_CHARSET => self::DEFAULT_DB_CHARSET,
self::KEY_DB_SERVER => self::DEFAULT_DB_SERVER,
self::KEY_DB_PORT => self::DEFAULT_DB_PORT,
];
/** @var array<string,string> */
private array $env;
/** @param array<string,int|string|float|bool> $env */
public function __construct(array $env = null)
{
$this->env = $env ?? $_ENV;
}
/**
* @throws ConfigException
*/
public function getConfig(string $key): string
{
if (isset($this->env[$key])) {
return $this->normaliseToString($this->env[$key]);
}
if (\defined($key)) {
return $this->normaliseToString(\constant($key));
}
if (isset(self::KEYS_WITH_DEFAULTS[$key])) {
return $this->normaliseToString(self::KEYS_WITH_DEFAULTS[$key]);
}
throw new ConfigException(sprintf(ConfigException::FAILED_FINDING_MSG, $key));
}
/**
* @throws ConfigException
*/
private function normaliseToString(mixed $value): string
{
if (is_scalar($value)) {
return (string)$value;
}
throw new ConfigException(ConfigException::NON_SCALAR_MSG);
}
}