From 72f2e1bf3c391d197196b7ab926f2be5a46483ba Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Henrik=20Bj=C3=B8rnskov?= <henrik@bjrnskov.dk>
Date: Mon, 24 Mar 2014 11:47:53 +0100
Subject: [PATCH] Port chain matcher from Brick

---
 src/Flint/Provider/RoutingServiceProvider.php |  11 +-
 src/Flint/Routing/ChainMatcher.php            | 100 ++++++++++++++++++
 .../Provider/RoutingServiceProviderTest.php   |  15 +--
 3 files changed, 109 insertions(+), 17 deletions(-)
 create mode 100644 src/Flint/Routing/ChainMatcher.php

diff --git a/src/Flint/Provider/RoutingServiceProvider.php b/src/Flint/Provider/RoutingServiceProvider.php
index 7e832d0..b792ff6 100644
--- a/src/Flint/Provider/RoutingServiceProvider.php
+++ b/src/Flint/Provider/RoutingServiceProvider.php
@@ -4,6 +4,7 @@
 
 use Silex\Application;
 use Flint\Routing\Loader\NullLoader;
+use Flint\Routing\ChainMatcher;
 use Symfony\Component\Routing\Router;
 use Symfony\Component\Routing\Loader\XmlFileLoader;
 use Symfony\Component\Routing\Loader\PhpFileLoader;
@@ -70,11 +71,13 @@ public function register(Application $app)
             return new Router($app['routing.loader'], $app['routing.resource'], $options, $app['request_context'], $app['logger']);
         });
 
-        $app['routes'] = function (Application $app) {
-            return $app['router']->getRouteCollection();
-        };
+        $app['url_matcher'] = $app->share($app->extend('url_matcher', function ($matcher, $app) {
+            $matcher = new ChainMatcher(array($app['router'], $matcher));
+            $matcher->setContext($app['request_context']);
+
+            return $matcher;
+        }));
 
-        $app['url_matcher'] = $app->raw('router');
         $app['url_generator'] = $app->raw('router');
     }
 
diff --git a/src/Flint/Routing/ChainMatcher.php b/src/Flint/Routing/ChainMatcher.php
new file mode 100644
index 0000000..5d158c9
--- /dev/null
+++ b/src/Flint/Routing/ChainMatcher.php
@@ -0,0 +1,100 @@
+<?php
+
+namespace Flint\Routing;
+
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\Routing\Matcher\RequestMatcherInterface;
+use Symfony\Component\Routing\Matcher\UrlMatcherInterface;
+use Symfony\Component\Routing\RequestContext;
+use Symfony\Component\Routing\Exception\MethodNotAllowedException;
+use Symfony\Component\Routing\Exception\ResourceNotFoundException;
+
+/**
+ * ChainMatcher.
+ *
+ * This wraps multiple UrlMatcherInterface's in order to not overwrite Silex
+ * internals.
+ *
+ * Created with inspiration from my own work of symfony-cmf ChainRouter and the
+ * ChainMatcher found in Drupal.
+ *
+ */
+class ChainMatcher implements UrlMatcherInterface, RequestMatcherInterface
+{
+    protected $matchers = array();
+    protected $context;
+
+    public function __construct($matchers = array())
+    {
+        foreach ($matchers as $matcher) {
+            $this->add($matcher);
+        }
+    }
+
+    public function add(UrlMatcherInterface $matcher, $priority = 0)
+    {
+        $this->matchers[$priority][] = $matcher;
+    }
+
+    public function setContext(RequestContext $context)
+    {
+        $this->context = $context;
+    }
+
+    public function getContext()
+    {
+        return $this->context;
+    }
+
+    public function matchRequest(Request $request)
+    {
+        return $this->doMatch($request->getPathInfo(), $request);
+    }
+
+    public function match($pathinfo)
+    {
+        return $this->doMatch($pathinfo);
+    }
+
+    protected function doMatch($pathinfo, Request $request = null)
+    {
+        $notAllowed = null;
+
+        foreach ($this->sort() as $matcher) {
+            $matcher->setContext($this->context);
+
+            try {
+                if ($request && $matcher instanceof RequestMatcherInterface) {
+                    return $matcher->matchRequest($request);
+                }
+
+                return $matcher->match($pathinfo);
+            } catch (ResourceNotFoundException $e) {
+                // Special case
+            } catch (MethodNotAllowedException $e) {
+                $notAllowed = $e;
+            }
+        }
+
+        if ($notAllowed) {
+            throw $notAllowed;
+        }
+
+        $info = $request ? 'this request\n' . $request : 'url "' . $pathinfo . '"';
+
+        throw new ResourceNotFoundException('None of the routers in the chain matched ' . $info);
+    }
+
+    protected function sort()
+    {
+        $matchers = array();
+
+        krsort($this->matchers);
+
+        foreach ($this->matchers as $collection) {
+            $matchers = array_merge($matchers, $collection);
+        }
+
+        return $matchers;
+    }
+}
diff --git a/tests/Flint/Tests/Provider/RoutingServiceProviderTest.php b/tests/Flint/Tests/Provider/RoutingServiceProviderTest.php
index abfe6c5..2de185e 100644
--- a/tests/Flint/Tests/Provider/RoutingServiceProviderTest.php
+++ b/tests/Flint/Tests/Provider/RoutingServiceProviderTest.php
@@ -17,8 +17,9 @@ public function testUrlMatcherAndGeneratorIsAliasOfRouter()
     {
         $this->provider->register($this->app);
 
-        $this->assertInstanceOf('Symfony\Component\Routing\Router', $this->app['url_matcher']);
+        $this->assertInstanceOf('Flint\Routing\ChainMatcher', $this->app['url_matcher']);
         $this->assertInstanceOf('Symfony\Component\Routing\Router', $this->app['url_generator']);
+        $this->assertInstanceOf('Symfony\Component\Routing\Router', $this->app['router']);
     }
 
     public function testRedirectableUrlMatcherIsUsed()
@@ -28,16 +29,4 @@ public function testRedirectableUrlMatcherIsUsed()
         $this->assertEquals('Silex\\RedirectableUrlMatcher', $this->app['router']->getOption('matcher_class'));
         $this->assertEquals('Silex\\RedirectableUrlMatcher', $this->app['router']->getOption('matcher_base_class'));
     }
-
-    public function testRouteCollectionIsGottenFromRouter()
-    {
-        $router = $this->getMockBuilder('Symfony\Component\Routing\Router')->disableOriginalConstructor()->getMock();
-        $router->expects($this->once())->method('getRouteCollection');
-
-        $this->provider->register($this->app);
-
-        $this->app['router'] = $router;
-
-        $this->app['routes'];
-    }
 }