Add file attachements to projects

app/Controller/FileViewer.php

@@ -0,0 +1,89 @@
+<?php
+
+namespace Kanboard\Controller;
+
+use Kanboard\Core\ObjectStorage\ObjectStorageException;
+
+/**
+ * File Viewer Controller
+ *
+ * @package  controller
+ * @author   Frederic Guillot
+ */
+class FileViewer extends Base
+{
+    /**
+     * Show file content in a popover
+     *
+     * @access public
+     */
+    public function show()
+    {
+        $file = $this->getFile();
+        $params = array('file_id' => $file['id'], 'project_id' => $this->request->getIntegerParam('project_id'));
+
+        if ($file['model'] === 'taskFile') {
+            $params['task_id'] = $file['task_id'];
+        }
+
+        $this->response->html($this->template->render('file_viewer/show', array(
+            'file' => $file,
+            'params' => $params,
+        )));
+    }
+
+    /**
+     * Display image
+     *
+     * @access public
+     */
+    public function image()
+    {
+        try {
+            $file = $this->getFile();
+            $this->response->contentType($this->helper->file->getImageMimeType($file['name']));
+            $this->objectStorage->output($file['path']);
+        } catch (ObjectStorageException $e) {
+            $this->logger->error($e->getMessage());
+        }
+    }
+
+    /**
+     * Display image thumbnail
+     *
+     * @access public
+     */
+    public function thumbnail()
+    {
+        $this->response->contentType('image/jpeg');
+
+        try {
+            $file = $this->getFile();
+            $model = $file['model'];
+            $this->objectStorage->output($this->$model->getThumbnailPath($file['path']));
+        } catch (ObjectStorageException $e) {
+            $this->logger->error($e->getMessage());
+
+            // Try to generate thumbnail on the fly for images uploaded before Kanboard < 1.0.19
+            $data = $this->objectStorage->get($file['path']);
+            $this->$model->generateThumbnailFromData($file['path'], $data);
+            $this->objectStorage->output($this->$model->getThumbnailPath($file['path']));
+        }
+    }
+
+    /**
+     * File download
+     *
+     * @access public
+     */
+    public function download()
+    {
+        try {
+            $file = $this->getFile();
+            $this->response->forceDownload($file['name']);
+            $this->objectStorage->output($file['path']);
+        } catch (ObjectStorageException $e) {
+            $this->logger->error($e->getMessage());
+        }
+    }
+}