Create URL generator interface.

Also bind a default implementation to the container.

framework/core/src/Core/CoreServiceProvider.php

@@ -72,6 +72,11 @@ class CoreServiceProvider extends ServiceProvider
 
         $this->app->singleton('flarum.formatter', 'Flarum\Core\Formatter\FormatterManager');
 
+        $this->app->bind(
+            'Flarum\Http\UrlGeneratorInterface',
+            'Flarum\Http\UrlGenerator'
+        );
+
         $this->app->bind(
             'Flarum\Core\Repositories\DiscussionRepositoryInterface',
             'Flarum\Core\Repositories\EloquentDiscussionRepository'

framework/core/src/Http/UrlGenerator.php

@@ -0,0 +1,28 @@
+<?php
+
+namespace Flarum\Http;
+
+class UrlGenerator implements UrlGeneratorInterface
+{
+    protected $router;
+
+
+    public function __construct(Router $router)
+    {
+        $this->router = $router;
+    }
+
+    public function toRoute($name, $parameters = [])
+    {
+        $path = $this->router->getPath($name, $parameters);
+        $path = ltrim($path, '/');
+
+        // TODO: Prepend real base URL
+        return "/$path";
+    }
+
+    public function toAsset($path)
+    {
+        return "/$path";
+    }
+}

framework/core/src/Http/UrlGeneratorInterface.php

@@ -0,0 +1,10 @@
+<?php
+
+namespace Flarum\Http;
+
+interface UrlGeneratorInterface
+{
+    public function toRoute($name, $parameters = []);
+
+    public function toAsset($path);
+}