Added services

This commit moves most controller logic onto Services. Services are part of the Service-Repository pattern. The models act as repositories.

Services are easily testable and are needed for the upcoming API, in order to avoid duplicated code and to maintain a single source of "truth".

 The User, Vacancy and Vote controllers still need their logic moved onto services.

app/Services/TeamFileService.php

@@ -0,0 +1,42 @@
+<?php
+
+
+namespace App\Services;
+
+
+use App\Exceptions\FileUploadException;
+use App\TeamFile;
+use Illuminate\Http\UploadedFile;
+use Illuminate\Support\Facades\Auth;
+
+class TeamFileService
+{
+
+    public function addFile(UploadedFile $upload, $uploader, $team, $caption, $description) {
+
+        $file = $upload->store('uploads');
+        $originalFileName = $upload->getClientOriginalName();
+        $originalFileExtension = $upload->extension();
+        $originalFileSize = $upload->getSize();
+
+        $fileEntry = TeamFile::create([
+            'uploaded_by' => $uploader,
+            'team_id' => $team,
+            'name' => $originalFileName,
+            'caption' => $caption,
+            'description' => $description,
+            'fs_location' => $file,
+            'extension' => $originalFileExtension,
+            'size' => $originalFileSize
+        ]);
+
+        if ($fileEntry && !is_bool($file))
+        {
+           return $fileEntry;
+        }
+
+        throw new FileUploadException("There was an unknown error whilst trying to upload your file.");
+
+    }
+
+}