Router::mergeNameAttribute()   A
last analyzed

Complexity

Conditions 1
Paths 1

Size

Total Lines 10
Code Lines 4

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 5
CRAP Score 1

Importance

Changes 0
Metric Value
eloc 4
c 0
b 0
f 0
dl 0
loc 10
ccs 5
cts 5
cp 1
rs 10
cc 1
nc 1
nop 2
crap 1
1
<?php
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/**
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 * @package   WPEmerge
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 * @author    Atanas Angelov <[email protected]>
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 * @copyright 2017-2019 Atanas Angelov
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 * @license   https://www.gnu.org/licenses/gpl-2.0.html GPL-2.0
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 * @link      https://wpemerge.com/
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 */
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namespace WPEmerge\Routing;
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use Closure;
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use WPEmerge\Exceptions\ConfigurationException;
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use WPEmerge\Helpers\Handler;
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use WPEmerge\Helpers\HandlerFactory;
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use WPEmerge\Requests\RequestInterface;
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use WPEmerge\Routing\Conditions\ConditionFactory;
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use WPEmerge\Routing\Conditions\ConditionInterface;
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use WPEmerge\Routing\Conditions\UrlableInterface;
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use WPEmerge\Support\Arr;
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/**
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 * Provide routing for site requests (i.e. all non-api requests).
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 */
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class Router implements HasRoutesInterface {
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	use HasRoutesTrait;
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	/**
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	 * Condition factory.
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	 *
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	 * @var ConditionFactory
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	 */
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	protected $condition_factory = null;
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	/**
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	 * Handler factory.
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	 *
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	 * @var HandlerFactory
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	 */
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	protected $handler_factory = null;
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	/**
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	 * Group stack.
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	 *
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	 * @var array<array<string, mixed>>
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	 */
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	protected $group_stack = [];
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	/**
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	 * Current active route.
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	 *
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	 * @var RouteInterface|null
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	 */
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	protected $current_route = null;
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	/**
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	 * Constructor.
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	 *
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	 * @codeCoverageIgnore
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	 * @param ConditionFactory $condition_factory
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	 * @param HandlerFactory   $handler_factory
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	 */
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	public function __construct( ConditionFactory $condition_factory, HandlerFactory $handler_factory ) {
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		$this->condition_factory = $condition_factory;
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		$this->handler_factory = $handler_factory;
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	}
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	/**
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	 * Get the current route.
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	 *
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	 * @return RouteInterface
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	 */
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	public function getCurrentRoute() {
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		return $this->current_route;
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	}
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	/**
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	 * Set the current route.
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	 *
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	 * @param  RouteInterface $current_route
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	 * @return void
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	 */
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	public function setCurrentRoute( RouteInterface $current_route ) {
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		$this->current_route = $current_route;
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	}
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	/**
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	 * Merge the methods attribute combining values.
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	 *
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	 * @param  string[] $old
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	 * @param  string[] $new
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	 * @return string[]
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	 */
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	public function mergeMethodsAttribute( $old, $new ) {
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		return array_merge( $old, $new );
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	}
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	/**
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	 * Merge the condition attribute.
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	 *
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	 * @param  string|array|Closure|ConditionInterface|null $old
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	 * @param  string|array|Closure|ConditionInterface|null $new
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	 * @return ConditionInterface|string
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	 */
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	public function mergeConditionAttribute( $old, $new ) {
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		try {
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			$condition = $this->condition_factory->merge( $old, $new );
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		} catch ( ConfigurationException $e ) {
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			throw new ConfigurationException( 'Route condition is not a valid route string or condition.' );
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		}
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112 2
		return $condition;
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	}
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	/**
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	 * Merge the middleware attribute combining values.
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	 *
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	 * @param  string[] $old
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	 * @param  string[] $new
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	 * @return string[]
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	 */
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	public function mergeMiddlewareAttribute( $old, $new ) {
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		return array_merge( $old, $new );
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	}
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	/**
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	 * Merge the namespace attribute taking the latest value.
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	 *
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	 * @param  string $old
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	 * @param  string $new
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	 * @return string
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	 */
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	public function mergeNamespaceAttribute( $old, $new ) {
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		return ! empty( $new ) ? $new : $old;
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	}
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	/**
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	 * Merge the handler attribute taking the latest value.
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	 *
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	 * @param  string|Closure $old
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	 * @param  string|Closure $new
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	 * @return string|Closure
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	 */
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	public function mergeHandlerAttribute( $old, $new ) {
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		return ! empty( $new ) ? $new : $old;
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	}
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	/**
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	 * Merge the handler attribute taking the latest value.
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	 *
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	 * @param  callable|null $old
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	 * @param  callable|null $new
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	 * @return string|Closure
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	 */
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	public function mergeQueryAttribute( $old, $new ) {
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		if ( $new === null ) {
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			return $old;
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		}
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		if ( $old === null ) {
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			return $new;
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		}
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		return function ( $query_vars ) use ( $old, $new ) {
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			return call_user_func( $new, call_user_func( $old, $query_vars ) );
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		};
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	}
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	/**
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	 * Merge the name attribute combining values with a dot.
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	 *
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	 * @param  string $old
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	 * @param  string $new
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	 * @return string
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	 */
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	public function mergeNameAttribute( $old, $new ) {
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		$name = implode( '.', array_filter( [$old, $new] ) );
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		// Trim dots.
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		$name = preg_replace( '/^\.+|\.+$/', '', $name );
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		// Reduce multiple dots to a single one.
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		$name = preg_replace( '/\.{2,}/', '.', $name );
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		return $name;
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	}
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	/**
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	 * Merge attributes into route.
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	 *
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	 * @param  array<string, mixed> $old
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	 * @param  array<string, mixed> $new
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	 * @return array<string, mixed>
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	 */
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	public function mergeAttributes( $old, $new ) {
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		return [
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			'methods' => $this->mergeMethodsAttribute(
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				(array) Arr::get( $old, 'methods', [] ),
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				(array) Arr::get( $new, 'methods', [] )
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			),
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			'condition' => $this->mergeConditionAttribute(
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				Arr::get( $old, 'condition', null ),
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				Arr::get( $new, 'condition', null )
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			),
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			'middleware' => $this->mergeMiddlewareAttribute(
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				(array) Arr::get( $old, 'middleware', [] ),
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				(array) Arr::get( $new, 'middleware', [] )
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			),
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			'namespace' => $this->mergeNamespaceAttribute(
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				Arr::get( $old, 'namespace', '' ),
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				Arr::get( $new, 'namespace', '' )
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			),
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			'handler' => $this->mergeHandlerAttribute(
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				Arr::get( $old, 'handler', '' ),
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				Arr::get( $new, 'handler', '' )
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			),
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			'query' => $this->mergeQueryAttribute(
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				Arr::get( $old, 'query', null ),
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				Arr::get( $new, 'query', null )
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			),
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			'name' => $this->mergeNameAttribute(
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				Arr::get( $old, 'name', '' ),
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				Arr::get( $new, 'name', '' )
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			),
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		];
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	}
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	/**
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	 * Get the top group from the stack.
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	 *
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	 * @codeCoverageIgnore
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	 * @return array<string, mixed>
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	 */
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	protected function getGroup() {
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		return Arr::last( $this->group_stack, null, [] );
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	}
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	/**
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	 * Add a group to the group stack, merging all previous attributes.
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	 *
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	 * @codeCoverageIgnore
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	 * @param array<string, mixed> $group
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	 * @return void
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	 */
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	protected function pushGroup( $group ) {
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		$this->group_stack[] = $this->mergeAttributes( $this->getGroup(), $group );
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	}
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	/**
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	 * Remove last group from the group stack.
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	 *
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	 * @codeCoverageIgnore
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	 * @return void
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	 */
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	protected function popGroup() {
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		array_pop( $this->group_stack );
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	}
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	/**
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	 * Create a route group.
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	 *
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	 * @codeCoverageIgnore
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	 * @param  array<string, mixed> $attributes
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	 * @param  Closure|string      $routes Closure or path to file.
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	 * @return void
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	 */
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	public function group( $attributes, $routes ) {
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		$this->pushGroup( $attributes );
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		if ( is_string( $routes ) ) {
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			/** @noinspection PhpIncludeInspection */
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			/** @codeCoverageIgnore */
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			require_once $routes;
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		} else {
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			$routes();
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		}
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		$this->popGroup();
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	}
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	/**
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	 * Make a route condition.
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	 *
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	 * @param  mixed              $condition
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	 * @return ConditionInterface
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	 */
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	protected function routeCondition( $condition ) {
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		if ( $condition === null ) {
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			throw new ConfigurationException( 'No route condition specified. Did you miss to call url() or where()?' );
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		}
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298 2
		if ( ! $condition instanceof ConditionInterface ) {
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			$condition = $this->condition_factory->make( $condition );
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		}
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		return $condition;
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	}
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	/**
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	 * Make a route handler.
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	 *
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	 * @codeCoverageIgnore
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	 * @param  string|Closure|null $handler
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	 * @param  string              $namespace
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	 * @return Handler
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	 */
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	protected function routeHandler( $handler, $namespace ) {
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		if ( $handler === null ) {
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			throw new ConfigurationException( 'No route handler specified. Did you miss to call handle()?' );
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		}
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		return $this->handler_factory->make( $handler, '', $namespace );
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	}
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	/**
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	 * Make a route.
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	 *
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	 * @param  array<string, mixed> $attributes
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	 * @return RouteInterface
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	 */
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	public function route( $attributes ) {
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		$attributes = $this->mergeAttributes( $this->getGroup(), $attributes );
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		$attributes = array_merge(
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			$attributes,
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			[
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				'condition' => $this->routeCondition( $attributes['condition'] ),
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				'handler' => $this->routeHandler( $attributes['handler'], $attributes['namespace'] ),
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			]
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		);
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		if ( empty( $attributes['methods'] ) ) {
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			throw new ConfigurationException(
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				'Route does not have any assigned request methods. ' .
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				'Did you miss to call get() or post() on your route definition, for example?'
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			);
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		}
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344 1
		return (new Route())->attributes( $attributes );
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	}
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	/**
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	 * Assign and return the first satisfied route (if any) as the current one for the given request.
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	 *
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	 * @param  RequestInterface    $request
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	 * @return RouteInterface|null
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	 */
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	public function execute( $request ) {
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		$routes = $this->getRoutes();
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		foreach ( $routes as $route ) {
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			if ( $route->isSatisfied( $request ) ) {
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				$this->setCurrentRoute( $route );
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				return $route;
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			}
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		}
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363 1
		return null;
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	}
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	/**
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	 * Get the url for a named route.
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	 *
369
	 * @param  string $name
370
	 * @param  array  $arguments
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	 * @return string
372
	 */
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	public function getRouteUrl( $name, $arguments = [] ) {
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		$routes = $this->getRoutes();
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376 3
		foreach ( $routes as $route ) {
377 2
			if ( $route->getAttribute( 'name' ) !== $name ) {
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				continue;
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			}
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381 2
			$condition = $route->getAttribute( 'condition' );
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383 2
			if ( ! $condition instanceof UrlableInterface ) {
384 1
				throw new ConfigurationException(
385 1
					'Route condition is not resolvable to a URL.'
386
				);
387
			}
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389 1
			return $condition->toUrl( $arguments );
390
		}
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392 1
		throw new ConfigurationException( "No route registered with the name \"$name\"." );
393
	}
394
}
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