Add abstract storage layer

4 files changed, 305 insertions, 0 deletions

diff --git a/app/Core/ObjectStorage/FileStorage.php b/app/Core/ObjectStorage/FileStorage.php
new file mode 100644
index 00000000..66c62334
--- /dev/null
+++ b/app/Core/ObjectStorage/FileStorage.php
@@ -0,0 +1,150 @@
+<?php
+
+namespace Core\ObjectStorage;
+
+/**
+ * Local File Storage
+ *
+ * @package  ObjectStorage
+ * @author   Frederic Guillot
+ */
+class FileStorage implements ObjectStorageInterface
+{
+    /**
+     * Base path
+     *
+     * @access private
+     * @var string
+     */
+    private $path = '';
+
+    /**
+     * Constructor
+     *
+     * @access public
+     * @param  string  $path
+     */
+    public function __construct($path)
+    {
+        $this->path = $path;
+    }
+
+    /**
+     * Fetch object contents
+     *
+     * @access public
+     * @param  string  $key
+     * @return string
+     */
+    public function get($key)
+    {
+        $filename = $this->path.DIRECTORY_SEPARATOR.$key;
+
+        if (! file_exists($filename)) {
+            throw new ObjectStorageException('File not found: '.$filename);
+        }
+
+        return file_get_contents($filename);
+    }
+
+    /**
+     * Save object
+     *
+     * @access public
+     * @param  string  $key
+     * @param  string  $blob
+     * @return string
+     */
+    public function put($key, &$blob)
+    {
+        $this->createFolder($key);
+
+        if (file_put_contents($this->path.DIRECTORY_SEPARATOR.$key, $blob) === false) {
+            throw new ObjectStorageException('Unable to write the file: '.$this->path.DIRECTORY_SEPARATOR.$key);
+        }
+    }
+
+    /**
+     * Output directly object content
+     *
+     * @access public
+     * @param  string  $key
+     */
+    public function passthru($key)
+    {
+        $filename = $this->path.DIRECTORY_SEPARATOR.$key;
+
+        if (! file_exists($filename)) {
+            throw new ObjectStorageException('File not found: '.$filename);
+        }
+
+        return readfile($filename);
+    }
+
+    /**
+     * Move local file to object storage
+     *
+     * @access public
+     * @param  string  $filename
+     * @param  string  $key
+     * @return boolean
+     */
+    public function moveFile($src_filename, $key)
+    {
+        $this->createFolder($key);
+        $dst_filename = $this->path.DIRECTORY_SEPARATOR.$key;
+
+        if (! rename($src_filename, $dst_filename)) {
+            throw new ObjectStorageException('Unable to move the file: '.$src_filename.' to '.$dst_filename);
+        }
+
+        return true;
+    }
+
+    /**
+     * Move uploaded file to object storage
+     *
+     * @access public
+     * @param  string  $filename
+     * @param  string  $key
+     * @return boolean
+     */
+    public function moveUploadedFile($filename, $key)
+    {
+        $this->createFolder($key);
+        return move_uploaded_file($filename, $this->path.DIRECTORY_SEPARATOR.$key);
+    }
+
+    /**
+     * Remove object
+     *
+     * @access public
+     * @param  string  $key
+     * @return boolean
+     */
+    public function remove($key)
+    {
+        $filename = $this->path.DIRECTORY_SEPARATOR.$key;
+
+        if (file_exists($filename)) {
+            return unlink($filename);
+        }
+
+        return false;
+    }
+
+    /**
+     * Create object folder
+     *
+     * @access private
+     * @param  string  $key
+     */
+    private function createFolder($key)
+    {
+        $folder = $this->path.DIRECTORY_SEPARATOR.dirname($key);
+
+        if (! is_dir($folder) && ! mkdir($folder, 0755, true)) {
+            throw new ObjectStorageException('Unable to create folder: '.$folder);
+        }
+    }
+}
diff --git a/app/Core/ObjectStorage/ObjectStorageException.php b/app/Core/ObjectStorage/ObjectStorageException.php
new file mode 100644
index 00000000..e89aeb25
--- /dev/null
+++ b/app/Core/ObjectStorage/ObjectStorageException.php
@@ -0,0 +1,9 @@
+<?php
+
+namespace Core\ObjectStorage;
+
+use Exception;
+
+class ObjectStorageException extends Exception
+{
+}
diff --git a/app/Core/ObjectStorage/ObjectStorageInterface.php b/app/Core/ObjectStorage/ObjectStorageInterface.php
new file mode 100644
index 00000000..5440cf2b
--- /dev/null
+++ b/app/Core/ObjectStorage/ObjectStorageInterface.php
@@ -0,0 +1,68 @@
+<?php
+
+namespace Core\ObjectStorage;
+
+/**
+ * Object Storage Interface
+ *
+ * @package  ObjectStorage
+ * @author   Frederic Guillot
+ */
+interface ObjectStorageInterface
+{
+    /**
+     * Fetch object contents
+     *
+     * @access public
+     * @param  string  $key
+     * @return string
+     */
+    public function get($key);
+
+    /**
+     * Save object
+     *
+     * @access public
+     * @param  string  $key
+     * @param  string  $blob
+     * @return string
+     */
+    public function put($key, &$blob);
+
+    /**
+     * Output directly object content
+     *
+     * @access public
+     * @param  string  $key
+     */
+    public function passthru($key);
+
+    /**
+     * Move local file to object storage
+     *
+     * @access public
+     * @param  string  $filename
+     * @param  string  $key
+     * @return boolean
+     */
+    public function moveFile($filename, $key);
+
+    /**
+     * Move uploaded file to object storage
+     *
+     * @access public
+     * @param  string  $filename
+     * @param  string  $key
+     * @return boolean
+     */
+    public function moveUploadedFile($filename, $key);
+
+    /**
+     * Remove object
+     *
+     * @access public
+     * @param  string  $key
+     * @return boolean
+     */
+    public function remove($key);
+}
diff --git a/app/Core/Tool.php b/app/Core/Tool.php
index 7939a80e..887c8fb3 100644
--- a/app/Core/Tool.php
+++ b/app/Core/Tool.php
@@ -72,4 +72,82 @@ class Tool
             }
         }
     }
+
+    /**
+     * Generate a jpeg thumbnail from an image
+     *
+     * @static
+     * @access public
+     * @param  string    $src_file         Source file image
+     * @param  string    $dst_file         Destination file image
+     * @param  integer   $resize_width     Desired image width
+     * @param  integer   $resize_height    Desired image height
+     */
+    public static function generateThumbnail($src_file, $dst_file, $resize_width = 250, $resize_height = 100)
+    {
+        $metadata = getimagesize($src_file);
+        $src_width = $metadata[0];
+        $src_height = $metadata[1];
+        $dst_y = 0;
+        $dst_x = 0;
+
+        if (empty($metadata['mime'])) {
+            return;
+        }
+
+        if ($resize_width == 0 && $resize_height == 0) {
+            $resize_width = 100;
+            $resize_height = 100;
+        }
+
+        if ($resize_width > 0 && $resize_height == 0) {
+            $dst_width = $resize_width;
+            $dst_height = floor($src_height * ($resize_width / $src_width));
+            $dst_image = imagecreatetruecolor($dst_width, $dst_height);
+        }
+        elseif ($resize_width == 0 && $resize_height > 0) {
+            $dst_width = floor($src_width * ($resize_height / $src_height));
+            $dst_height = $resize_height;
+            $dst_image = imagecreatetruecolor($dst_width, $dst_height);
+        }
+        else {
+
+            $src_ratio = $src_width / $src_height;
+            $resize_ratio = $resize_width / $resize_height;
+
+            if ($src_ratio <= $resize_ratio) {
+                $dst_width = $resize_width;
+                $dst_height = floor($src_height * ($resize_width / $src_width));
+
+                $dst_y = ($dst_height - $resize_height) / 2 * (-1);
+            }
+            else {
+                $dst_width = floor($src_width * ($resize_height / $src_height));
+                $dst_height = $resize_height;
+
+                $dst_x = ($dst_width - $resize_width) / 2 * (-1);
+            }
+
+            $dst_image = imagecreatetruecolor($resize_width, $resize_height);
+        }
+
+        switch ($metadata['mime']) {
+            case 'image/jpeg':
+            case 'image/jpg':
+                $src_image = imagecreatefromjpeg($src_file);
+                break;
+            case 'image/png':
+                $src_image = imagecreatefrompng($src_file);
+                break;
+            case 'image/gif':
+                $src_image = imagecreatefromgif($src_file);
+                break;
+            default:
+                return;
+        }
+
+        imagecopyresampled($dst_image, $src_image, $dst_x, $dst_y, 0, 0, $dst_width, $dst_height, $src_width, $src_height);
+        imagejpeg($dst_image, $dst_file);
+        imagedestroy($dst_image);
+    }
 }