Simply\Router\RouteDefinitionProvider

Complexity

Total Complexity

12

Size/Duplication

Total Lines	131
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	1

Test Coverage

Coverage

100%

Importance

Changes

0

7 Methods

Rating	Name	Duplication	Size	Complexity
A	addRouteDefinition()	0	26	4
A	getCacheFile()	0	20	1
A	getStaticRoutes()	0	4	1
A	getSegmentCountIds()	0	4	1
A	getSegmentValueIds()	0	4	1
A	getRouteDefinition()	0	8	2
A	getRouteDefinitionByName()	0	8	2

<?php

namespace Simply\Router;

/**
 * Provides route definitions and matching arrays for the router.
 * @author Riikka Kalliomäki <riikka.kalliomaki@gmail.com>
 * @copyright Copyright (c) 2018 Riikka Kalliomäki
 * @license http://opensource.org/licenses/mit-license.php MIT License
 */
class RouteDefinitionProvider
{
    /** @var array<int[]> List of static paths to route */
    protected $staticRoutes = [];

    /** @var array<int[]> List of routes per number of segments */
    protected $segmentCounts = [];

    /** @var array<array<int[]>> List of routes by each segment */
    protected $segmentValues = [];

    /** @var array[] Cache of all route definitions */
    protected $routeDefinitions = [];

    /** @var int[] List of routes by their name */
    protected $routesByName = [];

    /**
     * Adds a new route definition.
     * @param RouteDefinition $definition A new route definition to add
     */
    public function addRouteDefinition(RouteDefinition $definition): void
    {
        $name = $definition->getName();

        if (isset($this->routesByName[$name])) {
            throw new \InvalidArgumentException("Route with name '$name' already exists");
        }

        $routeId = \count($this->routeDefinitions);
        $segments = $definition->getSegments();

        $this->routeDefinitions[$routeId] = $definition->getDefinitionCache();
        $this->routesByName[$name] = $routeId;

        if ($definition->isStatic()) {
            $this->staticRoutes[implode('/', $segments)][] = $routeId;
            return;
        }

        foreach ($segments as $i => $segment) {
            $this->segmentValues[$i][$segment][$routeId] = $routeId;
        }

        $this->segmentCounts += array_fill(0, \count($segments) + 1, []);
        $this->segmentCounts[\count($segments)][$routeId] = $routeId;
    }

    /**
     * Returns PHP code for cached RouteDefinitionProvider that can be stored in file and included.
     * @return string PHP code for cached RouteDefinitionProvider
     */
    public function getCacheFile(): string
    {
        $template = <<<'TEMPLATE'
<?php return new class extends \Simply\Router\RouteDefinitionProvider {
    protected $staticRoutes = ['STATICS'];
    protected $segmentCounts = ['COUNTS'];
    protected $segmentValues = ['VALUES'];
    protected $routeDefinitions = ['DEFINITIONS'];
    protected $routesByName = ['NAMES'];
};
TEMPLATE;

        return strtr($template, [
            "['STATICS']" => var_export($this->staticRoutes, true),
            "['COUNTS']" => var_export($this->segmentCounts, true),
            "['VALUES']" => var_export($this->segmentValues, true),
            "['DEFINITIONS']" => var_export($this->routeDefinitions, true),
            "['NAMES']" => var_export($this->routesByName, true),
        ]);
    }

    /**
     * Returns list of routes per static path.
     * @return array[] List of routes per static path
     */
    public function getStaticRoutes(): array
    {
        return $this->staticRoutes;
    }

    /**
     * Returns route ids with specific segment count.
     * @param int $count The number of segments in the path
     * @return int[] List of route ids with specific segment count
     */
    public function getSegmentCountIds(int $count): array
    {
        return $this->segmentCounts[$count] ?? [];
    }

    /**
     * Returns route ids with specific value for specific segment.
     * @param int $segment The number of the segment
     * @param string $value The value for the segment or '/' dynamic segments
     * @return int[] List of route ids the match the given criteria
     */
    public function getSegmentValueIds(int $segment, string $value): array
    {
        return $this->segmentValues[$segment][$value] ?? [];
    }

    /**
     * Returns a route definition by a specific id.
     * @param int $routeId Id of the route definition
     * @return RouteDefinition The route definition for the specific id
     */
    public function getRouteDefinition(int $routeId): RouteDefinition
    {
        if (!isset($this->routeDefinitions[$routeId])) {
            throw new \InvalidArgumentException("Invalid route id '$routeId'");
        }

        return RouteDefinition::createFromCache($this->routeDefinitions[$routeId]);
    }

    /**
     * Returns a route definition by the name of the route.
     * @param string $name The name of the route
     * @return RouteDefinition The route definition with the given name
     */
    public function getRouteDefinitionByName(string $name): RouteDefinition
    {
        if (!isset($this->routesByName[$name])) {
            throw new \InvalidArgumentException("Invalid route name '$name'");
        }

        return $this->getRouteDefinition($this->routesByName[$name]);
    }
}