/**
* Constructor
*
* Optionally accept the project root directory; if non-empty, it is used
* to prefix the $configFile.
*
* @param mixed $injectors
* @param DiscoveryChainInterface $discoveryChain
* @param Collection $availableTypes
* @param string $projectRoot
*/
public function __construct($injectors, DiscoveryChainInterface $discoveryChain, Collection $availableTypes, $projectRoot = '')
{
$this->chain = Collection::create($injectors)->filter(function ($injector, $file) use($discoveryChain) {
return $discoveryChain->discoveryExists($file);
})->map(function ($injector) use($projectRoot) {
return new $injector($projectRoot);
})->filter(function ($injector) use($availableTypes) {
return $availableTypes->reduce(function ($flag, $type) use($injector) {
return $flag || $injector->registersType($type);
}, false);
});
}
/**
* Prompt for the user to select a configuration location to update.
*
* @param string $name
* @param Collection $options
* @param int $packageType
* @return Injector\InjectorInterface
*/
private function promptForConfigOption($name, Collection $options, $packageType)
{
if ($cachedInjector = $this->getCachedInjector($packageType)) {
return $cachedInjector;
}
$ask = $options->reduce(function ($ask, $option, $index) {
$ask[] = sprintf(" [<comment>%d</comment>] %s\n", $index, $option->getPromptText());
return $ask;
}, []);
array_unshift($ask, sprintf("\n <question>Please select which config file you wish to inject '%s' into:</question>\n", $name));
array_push($ask, ' Make your selection (default is <comment>0</comment>):');
while (true) {
$answer = $this->io->ask($ask, 0);
if (is_numeric($answer) && isset($options[(int) $answer])) {
$injector = $options[(int) $answer]->getInjector();
$this->promptToRememberOption($injector, $packageType);
return $injector;
}
$this->io->write('<error>Invalid selection</error>');
}
}
/**
* Attempt to retrieve a cached injector, based on the current package types.
*
* @param Collection $packageTypes
* @return null|Injector\InjectorInterface
*/
private function getCachedInjector(Collection $packageTypes)
{
return $packageTypes->reduce(function ($injector, $type) {
if (null !== $injector || !isset($this->cachedInjectors[$type])) {
return $injector;
}
return $this->cachedInjectors[$type];
}, null);
}
