glhd/gretel

<?php

namespace Glhd\Gretel\Resolvers;

use Closure;
use Glhd\Gretel\Exceptions\UnmatchedRouteException;
use Glhd\Gretel\Exceptions\UnresolvableParentException;
use Glhd\Gretel\Registry;
use Glhd\Gretel\Routing\RouteBreadcrumb;
use Illuminate\Http\Request;
use Illuminate\Support\Arr;
use Illuminate\Support\Str;
use Symfony\Component\HttpFoundation\Request as SymfonyRequest;
use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;

class ParentResolver extends Resolver
{
    public static function make($value, string $name, ?Closure $relation = null): Resolver
    {
        $value = static::wrapClosure($value);
        $relation = static::wrapNullableClosure($relation);
        
        $callback = static function() use ($value, $name, $relation) {
            return [$value, $name, $relation];
        };
        
        return new static($callback);
    }
    
    public function resolve(array $parameters, Registry $registry)
    {
        [$callback, $name, $relation] = parent::resolve($parameters, $registry);
        $result = $callback($parameters);
        
        if (null === $result) {
            return null;
        }
        
        if ($relation) {
            $parameters = Arr::wrap($relation($parameters));
        }
        
        // Handle parent shorthand
        if (is_string($result) && 0 === strpos($result, '.')) {
            $result = Str::beforeLast($name, '.').$result;
        }
        
        // If we get back a route name, we'll load it from the registry and pass
        // on any custom parameters that were provided
        if (is_string($result) && $registry->has($result)) {
            $result = $registry->getOrFail($result);
        }
        
        // If we get back a URL, we'll try to resolve the parent via the Router
        // This may not last in the API — use at your own risk
        if (is_string($result) && filter_var($result, FILTER_VALIDATE_URL)) {
            return $this->findParentByUrl($result, $registry);
        }
        
        if (! ($result instanceof RouteBreadcrumb)) {
            throw new UnresolvableParentException($result, $name);
        }
        
        if (! empty($parameters)) {
            $result = clone $result;
            $result->setParameters($parameters);
        }
        
        return $result;
    }
    
    /**
     * Please note that this behavior is intentionally undocumented and may be
     * removed at any time. Use at your own risk.
     */
    protected function findParentByUrl(string $url, Registry $registry): RouteBreadcrumb
    {
        $router = app('router');
        $request = Request::createFromBase(SymfonyRequest::create($url));
        
        try {
            $route = $router->getRoutes()->match($request);
        } catch (NotFoundHttpException $exception) {
            throw new UnmatchedRouteException($url);
        }
        
        if ($route->hasParameters()) {
            $router->substituteBindings($route);
            $router->substituteImplicitBindings($route);
        }
        
        $breadcrumb = $registry->getOrFail($route);
        $breadcrumb->setParameters($route->parameters());
        
        return $breadcrumb;
    }
}