New export functionality.

app/Export/Collector/AttachmentCollector.php

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+<?php
+/**
+ * AttachmentCollector.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\Export\Collector;
+
+use Auth;
+use Crypt;
+use FireflyIII\Models\Attachment;
+use FireflyIII\Models\ExportJob;
+use Log;
+
+/**
+ * Class AttachmentCollector
+ *
+ * @package FireflyIII\Export\Collector
+ */
+class AttachmentCollector extends BasicCollector implements CollectorInterface
+{
+    /**
+     * AttachmentCollector constructor.
+     *
+     * @param ExportJob $job
+     */
+    public function __construct(ExportJob $job)
+    {
+        parent::__construct($job);
+    }
+
+    public function run()
+    {
+        // grab all the users attachments:
+        $attachments = Auth::user()->attachments()->get();
+
+        Log::debug('Found ' . $attachments->count() . ' attachments.');
+
+        /** @var Attachment $attachment */
+        foreach ($attachments as $attachment) {
+            $originalFile = storage_path('upload') . DIRECTORY_SEPARATOR . 'at-' . $attachment->id . '.data';
+            if (file_exists($originalFile)) {
+                Log::debug('Stored 1 attachment');
+                $decrypted = Crypt::decrypt(file_get_contents($originalFile));
+                $newFile   = storage_path('export') . DIRECTORY_SEPARATOR . $this->job->key . '-Attachment nr. ' . $attachment->id . ' - ' . $attachment->filename;
+                file_put_contents($newFile, $decrypted);
+                $this->getFiles()->push($newFile);
+            }
+        }
+    }
+}

app/Export/Collector/BasicCollector.php

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+<?php
+/**
+ * BasicCollector.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\Export\Collector;
+
+
+use FireflyIII\Models\ExportJob;
+use Illuminate\Support\Collection;
+
+/**
+ * Class BasicCollector
+ *
+ * @package FireflyIII\Export\Collector
+ */
+class BasicCollector
+{
+    /** @var Collection */
+    private $files;
+
+    /** @var ExportJob */
+    protected $job;
+
+    /**
+     * BasicCollector constructor.
+     */
+    public function __construct(ExportJob $job)
+    {
+        $this->files = new Collection;
+        $this->job   = $job;
+    }
+
+    /**
+     * @return Collection
+     */
+    public function getFiles()
+    {
+        return $this->files;
+    }
+
+    /**
+     * @param Collection $files
+     */
+    public function setFiles($files)
+    {
+        $this->files = $files;
+    }
+
+
+}

app/Export/Collector/CollectorInterface.php

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+<?php
+/**
+ * CollectorInterface.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\Export\Collector;
+
+/**
+ * Interface CollectorInterface
+ *
+ * @package FireflyIII\Export\Collector
+ */
+interface CollectorInterface
+{
+    public function run();
+
+}

app/Export/Collector/UploadCollector.php

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+<?php
+/**
+ * UploadCollector.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\Export\Collector;
+
+use Auth;
+use Crypt;
+use FireflyIII\Models\ExportJob;
+
+/**
+ * Class UploadCollector
+ *
+ * @package FireflyIII\Export\Collector
+ */
+class UploadCollector extends BasicCollector implements CollectorInterface
+{
+
+    /**
+     * AttachmentCollector constructor.
+     *
+     * @param ExportJob $job
+     */
+    public function __construct(ExportJob $job)
+    {
+        parent::__construct($job);
+    }
+
+    public function run()
+    {
+        // grab upload directory.
+        $path  = storage_path('upload');
+        $files = scandir($path);
+        // only allow old uploads for this user:
+        $expected = 'csv-upload-' . Auth::user()->id . '-';
+        $len      = strlen($expected);
+        foreach ($files as $entry) {
+            if (substr($entry, 0, $len) === $expected) {
+                // this is an original upload.
+                $parts          = explode('-', str_replace(['.csv.encrypted', $expected], '', $entry));
+                $originalUpload = intval($parts[1]);
+                $date           = date('Y-m-d \a\t H-i-s', $originalUpload);
+                $newFileName    = 'Old CSV import dated ' . $date . '.csv';
+                $content        = Crypt::decrypt(file_get_contents($path . DIRECTORY_SEPARATOR . $entry));
+                $fullPath       = storage_path('export') . DIRECTORY_SEPARATOR . $this->job->key . '-' . $newFileName;
+
+                // write to file:
+                file_put_contents($fullPath, $content);
+
+                // add entry to set:
+                $this->getFiles()->push($fullPath);
+            }
+        }
+    }
+}