Final fixes for API binder.

app/Http/Middleware/Binder.php

@@ -0,0 +1,100 @@
+<?php
+/**
+ * Binder.php
+ * Copyright (c) 2018 thegrumpydictator@gmail.com
+ *
+ * This file is part of Firefly III.
+ *
+ * Firefly III is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Firefly III is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Firefly III. If not, see <http://www.gnu.org/licenses/>.
+ */
+declare(strict_types=1);
+
+namespace FireflyIII\Http\Middleware;
+
+use Closure;
+use FireflyIII\Support\Domain;
+use Illuminate\Contracts\Auth\Factory as Auth;
+use Illuminate\Http\Request;
+use Illuminate\Routing\Route;
+
+/**
+ * Class HttpBinder
+ */
+class Binder
+{
+    /**
+     * The authentication factory instance.
+     *
+     * @var \Illuminate\Contracts\Auth\Factory
+     */
+    protected $auth;
+    /**
+     * @var array
+     */
+    protected $binders = [];
+
+    /**
+     * Binder constructor.
+     *
+     * @param  \Illuminate\Contracts\Auth\Factory $auth
+     */
+    public function __construct(Auth $auth)
+    {
+        $this->binders = Domain::getBindables();
+        $this->auth    = $auth;
+    }
+
+    /**
+     * Handle an incoming request.
+     *
+     * @param  \Illuminate\Http\Request $request
+     * @param  \Closure                 $next
+     * @param  string[]                 ...$guards
+     *
+     * @return mixed
+     *
+     * @throws \Illuminate\Auth\AuthenticationException
+     */
+    public function handle($request, Closure $next, ...$guards)
+    {
+        $middleware = $request->route()->middleware();
+        $guard = 'web';
+        if(in_array('auth:api', $middleware)) {
+            $guard = 'api';
+        }
+        $guard = auth()->guard($guard);
+
+        foreach ($request->route()->parameters() as $key => $value) {
+            if (isset($this->binders[$key])) {
+                $boundObject = $this->performBinding($guard, $key, $value, $request->route());
+                $request->route()->setParameter($key, $boundObject);
+            }
+        }
+
+        return $next($request);
+    }
+
+    /**
+     * @param $key
+     * @param $value
+     * @param $route
+     *
+     * @return mixed
+     */
+    private function performBinding($guard, string $key, string $value, Route $route)
+    {
+        $class = $this->binders[$key];
+        return $class::routeBinder($guard, $value, $route);
+    }
+}