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<?php |
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namespace SoliDry\Extension; |
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use SoliDry\Exceptions\AttributesException; |
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use SoliDry\Helpers\ConfigHelper; |
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use SoliDry\Helpers\MigrationsHelper; |
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use SoliDry\Types\ConfigInterface; |
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use SoliDry\Types\ErrorsInterface; |
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/** |
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* Class StateMachine |
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* @package SoliDry\Extension |
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*/ |
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class StateMachine |
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{ |
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private $machine = []; |
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private $states = []; |
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private $initial; |
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// state field taken from table in config |
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private $field; |
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/** |
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* StateMachine constructor. |
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* @param string $entity |
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*/ |
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public function __construct(string $entity) |
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{ |
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$this->machine = ConfigHelper::getNestedParam(ConfigInterface::STATE_MACHINE, MigrationsHelper::getTableName($entity)); |
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$this->field = key($this->machine); |
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} |
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/** |
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* @param string $field |
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* @return bool |
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*/ |
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public function isStatedField(string $field) : bool |
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{ |
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return empty($this->machine[$field]) === false |
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&& $this->machine[$field][ConfigInterface::ENABLED] === true |
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&& empty($this->machine[$field][ConfigInterface::STATES]) === false; |
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} |
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/** |
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* @param mixed $from |
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* @param mixed $to |
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* @return bool |
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*/ |
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public function isTransitive($from, $to): bool |
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{ |
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return $from === $to || in_array($to, $this->states[$from], true); |
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} |
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public function isInitial($state): bool |
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{ |
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return empty($this->states[ConfigInterface::INITIAL]) === false |
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&& in_array($state, $this->states[ConfigInterface::INITIAL]); |
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} |
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/** |
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* @return mixed |
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*/ |
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public function getInitial() |
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{ |
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return $this->initial; |
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} |
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/** |
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* @param string $field |
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* @throws AttributesException |
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*/ |
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public function setStates(string $field) : void |
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{ |
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if(empty($this->machine[$field][ConfigInterface::STATES])) { |
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throw new AttributesException(ErrorsInterface::JSON_API_ERRORS[ErrorsInterface::HTTP_CODE_BULK_EXT_ERROR], ErrorsInterface::HTTP_CODE_BULK_EXT_ERROR); |
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} |
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$this->states = $this->machine[$field][ConfigInterface::STATES]; |
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} |
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/** |
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* @param string $field |
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* @throws AttributesException |
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*/ |
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public function setInitial(string $field) : void |
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{ |
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if(empty($this->machine[$field][ConfigInterface::STATES][ConfigInterface::INITIAL][0])) { |
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throw new AttributesException('There should be an initial value for: "' . $field . '" field."', ErrorsInterface::HTTP_CODE_FSM_INIT_ATTR); |
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} |
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$this->initial = $this->machine[$field][ConfigInterface::STATES][ConfigInterface::INITIAL][0]; |
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} |
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/** |
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* @return mixed|null |
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*/ |
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public function getField() |
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{ |
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return $this->field; |
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} |
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} |