Roughly implement routes and data preloading

Only preloading data for basic requests w/o query params, at least for
the moment - if we have to preload for something like
/?q=test&sort=newest, we end up having to duplicate a whole lot of
logic between JS/PHP.

src/Api/Actions/Discussions/IndexAction.php

@@ -100,7 +100,7 @@ class IndexAction extends SerializeCollectionAction
         static::addPaginationLinks(
             $document,
             $request,
-            $this->url->toRoute('flarum.api.discussions.index'),
+            $request->http ? $this->url->toRoute('flarum.api.discussions.index') : '',
             $results->areMoreResults()
         );
 

src/Api/Actions/Discussions/ShowAction.php

@@ -32,8 +32,8 @@ class ShowAction extends SerializeResourceAction
     public static $include = [
         'startUser' => false,
         'lastUser' => false,
-        'startPost' => true,
-        'lastPost' => true,
+        'startPost' => false,
+        'lastPost' => false,
         'posts' => true,
         'posts.user' => true,
         'posts.user.groups' => true,

src/Forum/Actions/DiscussionAction.php

@@ -0,0 +1,18 @@
+<?php namespace Flarum\Forum\Actions;
+
+class DiscussionAction extends IndexAction
+{
+    protected function getDetails($request, $params)
+    {
+        $response = $this->apiClient->send('Flarum\Api\Actions\Discussions\ShowAction', [
+            'id' => $params['id'],
+            'near' => $params['near']
+        ]);
+
+        // TODO: return an object instead of an array?
+        return [
+            'title' => $response->data->title,
+            'response' => $response
+        ];
+    }
+}

src/Forum/Actions/IndexAction.php

@@ -6,6 +6,7 @@ use Flarum\Assets\JsCompiler;
 use Flarum\Assets\LessCompiler;
 use Flarum\Core;
 use Flarum\Forum\Events\RenderView;
+use Flarum\Forum\Loaders\LoaderInterface;
 use Flarum\Locale\JsCompiler as LocaleJsCompiler;
 use Flarum\Support\Actor;
 use Flarum\Support\HtmlAction;
@@ -66,11 +67,18 @@ class IndexAction extends HtmlAction
             }
         }
 
+        $details = $this->getDetails($request, $params);
+
+        $data = array_merge($data, array_get($details, 'data', []));
+        $response = array_get($details, 'response');
+        $title = array_get($details, 'title');
+
         $view = view('flarum.forum::index')
-            ->with('title', Core::config('forum_title'))
+            ->with('title', ($title ? $title.' - ' : '').Core::config('forum_title'))
             ->with('config', $config)
             ->with('layout', 'flarum.forum::forum')
             ->with('data', $data)
+            ->with('response', $response)
             ->with('session', $session)
             ->with('alert', $alert);
 
@@ -112,6 +120,23 @@ class IndexAction extends HtmlAction
             ->with('scripts', [$assets->getJsFile(), $localeCompiler->getFile()]);
     }
 
+    protected function getDetails($request, $params)
+    {
+        $queryParams = $request->getQueryParams();
+
+        // Only preload data if we're viewing the default index with no filters,
+        // otherwise we have to do all kinds of crazy stuff
+        if (!count($queryParams) && $request->getUri()->getPath() === '/') {
+            $response = $this->apiClient->send('Flarum\Api\Actions\Discussions\IndexAction');
+
+            return [
+                'response' => $response
+            ];
+        }
+
+        return [];
+    }
+
     protected static function filterTranslations($translations)
     {
         $filtered = [];

src/Forum/ForumServiceProvider.php

@@ -2,7 +2,6 @@
 
 use Flarum\Http\RouteCollection;
 use Flarum\Http\UrlGenerator;
-use Flarum\Support\AssetManager;
 use Flarum\Support\ServiceProvider;
 use Psr\Http\Message\ServerRequestInterface;
 
@@ -49,16 +48,36 @@ class ForumServiceProvider extends ServiceProvider
     {
         $this->app->instance('flarum.forum.routes', $routes = new RouteCollection);
 
-        /**
-         * Route::group(['middleware' => 'Flarum\Forum\Middleware\LoginWithCookie'], function () use ($action) {
-         * For the two below
-         */
         $routes->get(
             '/',
             'flarum.forum.index',
             $this->action('Flarum\Forum\Actions\IndexAction')
         );
 
+        $routes->get(
+            '/d/{id:\d+}/{slug}',
+            'flarum.forum.discussion',
+            $this->action('Flarum\Forum\Actions\DiscussionAction')
+        );
+
+        $routes->get(
+            '/d/{id:\d+}/{slug}/{near}',
+            'flarum.forum.discussion.near',
+            $this->action('Flarum\Forum\Actions\DiscussionAction')
+        );
+
+        $routes->get(
+            '/u/{username}',
+            'flarum.forum.user',
+            $this->action('Flarum\Forum\Actions\IndexAction')
+        );
+
+        $routes->get(
+            '/settings',
+            'flarum.forum.settings',
+            $this->action('Flarum\Forum\Actions\IndexAction')
+        );
+
         $routes->get(
             '/logout',
             'flarum.forum.logout',