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<?php |
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/* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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* This software consists of voluntary contributions made by many individuals |
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* and is licensed under the MIT license. |
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*/ |
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declare(strict_types=1); |
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namespace PSR7Sessions\Storageless\Session; |
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use InvalidArgumentException; |
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use JsonSerializable; |
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use stdClass; |
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use function array_key_exists; |
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use function assert; |
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use function count; |
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use function is_array; |
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use function is_string; |
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use function json_decode; |
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use function json_encode; |
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use function json_last_error; |
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use function json_last_error_msg; |
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use function sprintf; |
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use function var_export; |
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use const JSON_PRESERVE_ZERO_FRACTION; |
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final class DefaultSessionData implements SessionInterface |
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{ |
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/** @var array<string, int|bool|string|float|mixed[]|null> */ |
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private array $data; |
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/** @var array<string, int|bool|string|float|mixed[]|null> */ |
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private array $originalData; |
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/** |
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* Instantiation via __construct is not allowed, use |
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* - {@see DefaultSessionData::fromDecodedTokenData} |
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* - {@see DefaultSessionData::fromTokenData} |
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* - {@see DefaultSessionData::newEmptySession} |
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* instead |
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*/ |
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private function __construct() |
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{ |
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} |
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public static function fromDecodedTokenData(stdClass $data) : self |
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{ |
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$instance = new self(); |
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$arrayShapedData = self::convertValueToScalar($data); |
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assert(is_array($arrayShapedData)); |
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$instance->originalData = $instance->data = $arrayShapedData; |
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return $instance; |
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} |
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/** @param mixed[] $data */ |
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public static function fromTokenData(array $data) : self |
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{ |
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$instance = new self(); |
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$instance->data = []; |
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foreach ($data as $key => $value) { |
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$instance->set((string) $key, $value); |
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} |
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$instance->originalData = $instance->data; |
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return $instance; |
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} |
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public static function newEmptySession() : self |
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{ |
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$instance = new self(); |
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$instance->originalData = $instance->data = []; |
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return $instance; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function set(string $key, $value) : void |
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{ |
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$this->data[$key] = self::convertValueToScalar($value); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function get(string $key, $default = null) |
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{ |
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if (! $this->has($key)) { |
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return self::convertValueToScalar($default); |
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} |
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return $this->data[$key]; |
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} |
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public function remove(string $key) : void |
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{ |
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unset($this->data[$key]); |
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} |
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public function clear() : void |
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{ |
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$this->data = []; |
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} |
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public function has(string $key) : bool |
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{ |
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return array_key_exists($key, $this->data); |
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} |
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public function hasChanged() : bool |
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{ |
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return $this->data !== $this->originalData; |
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} |
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public function isEmpty() : bool |
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{ |
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return ! count($this->data); |
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} |
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public function jsonSerialize() : object |
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{ |
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return (object) $this->data; |
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} |
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/** |
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* @param int|bool|string|float|mixed[]|object|JsonSerializable|null $value |
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* |
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* @return int|bool|string|float|mixed[] |
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*/ |
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private static function convertValueToScalar($value) |
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{ |
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$jsonScalar = json_encode($value, JSON_PRESERVE_ZERO_FRACTION); |
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if (! is_string($jsonScalar)) { |
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// @TODO use PHP 7.3 and JSON_THROW_ON_ERROR instead? https://wiki.php.net/rfc/json_throw_on_error |
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throw new InvalidArgumentException(sprintf( |
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'Could not serialise given value %s due to %s (%s)', |
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var_export($value, true), |
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json_last_error_msg(), |
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json_last_error() |
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)); |
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} |
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return json_decode($jsonScalar, true); |
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} |
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} |
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