New export functionality.

app/Repositories/ExportJob/ExportJobRepository.php

@@ -0,0 +1,66 @@
+<?php
+/**
+ * ExportJobRepository.php
+ * Copyright (C) 2016 Sander Dorigo
+ *
+ * This software may be modified and distributed under the terms
+ * of the MIT license.  See the LICENSE file for details.
+ */
+
+namespace FireflyIII\Repositories\ExportJob;
+
+use Auth;
+use Carbon\Carbon;
+use FireflyIII\Models\ExportJob;
+use Illuminate\Support\Str;
+
+/**
+ * Class ExportJobRepository
+ *
+ * @package FireflyIII\Repositories\ExportJob
+ */
+class ExportJobRepository implements ExportJobRepositoryInterface
+{
+
+    /**
+     * @return bool
+     */
+    public function cleanup()
+    {
+        $dayAgo = Carbon::create()->subDay();
+        ExportJob::where('created_at', '<', $dayAgo->format('Y-m-d H:i:s'))
+                 ->where('status', 'never_started')
+            // TODO also delete others.
+                 ->delete();
+
+        return true;
+    }
+
+    /**
+     * @return ExportJob
+     */
+    public function create()
+    {
+        $exportJob = new ExportJob;
+        $exportJob->user()->associate(Auth::user());
+        /*
+         * In theory this random string could give db error.
+         */
+        $exportJob->key    = Str::random(12);
+        $exportJob->status = 'export_status_never_started';
+        $exportJob->save();
+
+        return $exportJob;
+    }
+
+    /**
+     * @param $key
+     *
+     * @return ExportJob|null
+     */
+    public function findByKey($key)
+    {
+        return Auth::user()->exportJobs()->where('key', $key)->first();
+    }
+
+}

app/Repositories/ExportJob/ExportJobRepositoryInterface.php

@@ -0,0 +1,38 @@
+<?php
+/**
+ * ExportJobRepositoryInterface.php
+ * Copyright (C) 2016 Sander Dorigo
+ *
+ * This software may be modified and distributed under the terms
+ * of the MIT license.  See the LICENSE file for details.
+ */
+
+namespace FireflyIII\Repositories\ExportJob;
+
+use FireflyIII\Models\ExportJob;
+
+/**
+ * Interface ExportJobRepositoryInterface
+ *
+ * @package FireflyIII\Repositories\ExportJob
+ */
+interface ExportJobRepositoryInterface
+{
+    /**
+     * @return bool
+     */
+    public function cleanup();
+
+    /**
+     * @return ExportJob
+     */
+    public function create();
+
+    /**
+     * @param $key
+     *
+     * @return ExportJob|null
+     */
+    public function findByKey($key);
+
+}