Add downloads page

app/Http/Controllers/Frontend/DownloadController.php

@@ -0,0 +1,85 @@
+<?php
+
+namespace App\Http\Controllers\Frontend;
+
+use App\Interfaces\Controller;
+use App\Models\File;
+use Auth;
+use Flash;
+use Illuminate\Support\Facades\Storage;
+
+/**
+ * Class DownloadController
+ * @package App\Http\Controllers\Frontend
+ */
+class DownloadController extends Controller
+{
+    /**
+     * Show all of the available files
+     */
+    public function index()
+    {
+        $files = File::orderBy('ref_model', 'asc')->get();
+
+        /**
+         * Group all the files but compound the model with the ID,
+         * since we can have multiple files for every `ref_model`
+         */
+        $grouped_files = $files->groupBy(function($item, $key) {
+            return $item['ref_model'].'_'.$item['ref_model_id'];
+        });
+
+        /**
+         * The $group here looks like: App\Models\Airport_KAUS
+         * Split it into the $class and $id, and then change the
+         * name of the group to the object instance "name"
+         */
+        $regrouped_files = [];
+        foreach($grouped_files as $group => $files) {
+            [$class, $id] = explode('_', $group);
+            $klass = new $class();
+            $obj = $klass->find($id);
+
+            $category = explode('\\', $class);
+            $category = end($category);
+
+            $group_name = $category.' - '.$obj->name;
+            $regrouped_files[$group_name] = $files;
+        }
+
+        return view('downloads.index', [
+            'grouped_files' => $regrouped_files,
+        ]);
+    }
+
+    /**
+     * Show the application dashboard.
+     */
+    public function show($id)
+    {
+        /**
+         * @var File $file
+         */
+        $file = File::find($id);
+        if (!$file) {
+            Flash::error('File doesn\'t exist');
+            return redirect()->back();
+        }
+
+        // Allowed to download? If not, direct to login
+        if (!$file->public && !Auth::check()) {
+            return redirect(config('app.login_redirect'));
+        }
+
+        ++$file->download_count;
+        $file->save();
+
+        if($file->disk === 'public') {
+            $storage = Storage::disk('public');
+            return $storage->download($file->path, $file->filename);
+        }
+
+        // TODO: Config for streamed response?
+        return redirect()->to($file->url);
+    }
+}