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<?php
namespace Maps;
/**
* @licence GNU GPL v2+
* @author Jeroen De Dauw < jeroendedauw@gmail.com >
*/
final class MappingServices {
/**
* @var MappingService[]
*/
private $nameToServiceMap = [];
/**
* @var string Name of the default service, which is used as fallback
*/
private $defaultService;
/**
* @param string[] $availableServices
* @param string $defaultService
* @param MappingService ...$services
* @throws \InvalidArgumentException
*/
public function __construct( array $availableServices, string $defaultService, MappingService ...$services ) {
$this->defaultService = $defaultService;
foreach ( $services as $service ) {
if ( in_array( $service->getName(), $availableServices ) ) {
$this->nameToServiceMap[$service->getName()] = $service;
foreach ( $service->getAliases() as $alias ) {
$this->nameToServiceMap[$alias] = $service;
}
}
}
if ( !$this->nameIsKnown( $defaultService ) ) {
throw new \InvalidArgumentException( 'The default mapping service needs to be available' );
}
}
/**
* @param string $name Name or alias of a service
* @return bool
*/
public function nameIsKnown( string $name ): bool {
return array_key_exists( $name, $this->nameToServiceMap );
}
/**
* @param string $name Name or alias of a service
* @return MappingService
* @throws \OutOfBoundsException
*/
public function getService( string $name ): MappingService {
if ( !$this->nameIsKnown( $name ) ) {
throw new \OutOfBoundsException();
}
return $this->nameToServiceMap[$name];
}
/**
* @param string $name Name or alias of a service
* @return MappingService
*/
public function getServiceOrDefault( string $name ): MappingService {
if ( $this->nameIsKnown( $name ) ) {
return $this->nameToServiceMap[$name];
}
return $this->nameToServiceMap[$this->defaultService];
}
public function getAllNames(): array {
return array_keys( $this->nameToServiceMap );
}
}
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