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<?php
namespace gipfl\SimpleDaemon;
use Evenement\EventEmitterInterface;
use Evenement\EventEmitterTrait;
use gipfl\Json\JsonSerialization;
use function implode;
use function strlen;
class DaemonState implements JsonSerialization, EventEmitterInterface
{
use EventEmitterTrait;
const ON_CHANGE = 'change';
/** @var string */
protected $processTitle;
/** @var ?string */
protected $state;
/** @var ?string */
protected $currentProcessTitle;
/** @var ?string */
protected $currentMessage;
/** @var string[] */
protected $componentStates = [];
/**
* @return string
*/
public function getProcessTitle()
{
return $this->processTitle;
}
/**
* @param string $processTitle
* @return DaemonState
*/
public function setProcessTitle($processTitle)
{
$this->processTitle = $processTitle;
$this->refreshMessage();
return $this;
}
/**
* @return string|null
*/
public function getState()
{
return $this->state;
}
/**
* @param string|null $state
* @return DaemonState
*/
public function setState($state)
{
$this->state = $state;
$this->refreshMessage();
return $this;
}
/**
* @return string|null
*/
public function getCurrentMessage()
{
return $this->currentMessage;
}
/**
* @return string[]
*/
public function getComponentStates()
{
return $this->componentStates;
}
/**
* @param string[] $componentStates
* @return DaemonState
*/
public function setComponentStates($componentStates)
{
$this->componentStates = $componentStates;
$this->refreshMessage();
return $this;
}
/**
* @param string $name
* @param string $stateMessage
* @return $this
*/
public function setComponentState($name, $stateMessage)
{
if ($stateMessage === null) {
unset($this->componentStates[$name]);
} else {
$this->componentStates[$name] = $stateMessage;
}
$this->refreshMessage();
return $this;
}
public function getComponentState($name)
{
if (isset($this->componentStates[$name])) {
return $this->componentStates[$name];
}
return null;
}
public static function fromSerialization($any)
{
$self = new static();
if (isset($any->state)) {
$self->state = $any->state;
}
if (isset($any->currentMessage)) {
$self->currentMessage = $any->currentMessage;
}
if (isset($any->processTitle)) {
$self->processTitle = $any->processTitle;
}
if (isset($any->components)) {
$self->componentStates = $any->components;
}
return $self;
}
#[\ReturnTypeWillChange]
public function jsonSerialize()
{
return (object) [
'state' => $this->state,
'currentMessage' => $this->currentMessage,
'processTitle' => $this->processTitle,
'components' => $this->componentStates
];
}
protected function refreshMessage()
{
$messageParts = [];
$state = $this->getState();
if ($state !== null && strlen($state)) {
$messageParts[] = $state;
}
foreach ($this->getComponentStates() as $component => $message) {
$messageParts[] = "$component: $message";
}
$message = implode(', ', $messageParts);
if ($message !== $this->currentMessage || $this->processTitle !== $this->currentProcessTitle) {
$this->currentMessage = $message;
$this->currentProcessTitle = $this->processTitle;
$this->emit(self::ON_CHANGE, [$this->currentProcessTitle, $this->currentMessage]);
}
}
}
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