Add Model\Media\FileInfo to reuse in our modules

To reuse this model define virtual class in di.xml file with proper mediaPath argument.

Api/Media/FileInfoInterface.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace Swissup\Core\Api\Media;
+
+interface FileInfoInterface
+{
+    /**
+     * Get image data
+     *
+     * @param  string $fileName
+     * @return array
+     */
+    public function getImageData($fileName);
+}

Model/Media/FileInfo.php

@@ -0,0 +1,138 @@
+<?php
+
+namespace Swissup\Core\Model\Media;
+
+use Magento\Framework\App\Filesystem\DirectoryList;
+use Magento\Framework\File\Mime;
+use Magento\Framework\Filesystem;
+use Magento\Framework\Filesystem\Directory\WriteInterface;
+use Magento\Framework\UrlInterface;
+
+class FileInfo implements \Swissup\Core\Api\Media\FileInfoInterface
+{
+    /**
+     * Path in /pub/media directory
+     *
+     * @var string
+     */
+    protected $mediaPath;
+
+    /**
+     * @var Filesystem
+     */
+    private $filesystem;
+
+    /**
+     * @var Mime
+     */
+    private $mime;
+
+    /**
+     * @var WriteInterface
+     */
+    private $mediaDirectory;
+
+    /**
+     * @param Filesystem $filesystem
+     * @param Mime $mime
+     */
+    public function __construct(
+        UrlInterface $urlBuilder,
+        Filesystem $filesystem,
+        Mime $mime,
+        $mediaPath = ''
+    ) {
+        $this->urlBuilder = $urlBuilder;
+        $this->filesystem = $filesystem;
+        $this->mime = $mime;
+        $this->mediaPath = $mediaPath;
+    }
+
+    /**
+     * Get WriteInterface instance
+     *
+     * @return WriteInterface
+     */
+    private function getMediaDirectory()
+    {
+        if ($this->mediaDirectory === null) {
+            $this->mediaDirectory = $this->filesystem->getDirectoryWrite(DirectoryList::MEDIA);
+        }
+        return $this->mediaDirectory;
+    }
+
+    /**
+     * Retrieve MIME type of requested file
+     *
+     * @param string $fileName
+     * @return string
+     */
+    public function getMimeType($fileName)
+    {
+        $filePath = $this->mediaPath . '/' . ltrim($fileName, '/');
+        $absoluteFilePath = $this->getMediaDirectory()->getAbsolutePath($filePath);
+
+        $result = $this->mime->getMimeType($absoluteFilePath);
+        return $result;
+    }
+
+    /**
+     * Get file statistics data
+     *
+     * @param string $fileName
+     * @return array
+     */
+    public function getStat($fileName)
+    {
+        $filePath = $this->mediaPath . '/' . ltrim($fileName, '/');
+
+        $result = $this->getMediaDirectory()->stat($filePath);
+        return $result;
+    }
+
+    /**
+     * Check if the file exists
+     *
+     * @param string $fileName
+     * @return bool
+     */
+    public function isExist($fileName)
+    {
+        $filePath = $this->mediaPath . '/' . ltrim($fileName, '/');
+        $result = $this->getMediaDirectory()->isExist($filePath);
+        return $result;
+    }
+
+    /**
+     * Get base url fro media directory including path
+     *
+     * @return string
+     */
+    public function getBaseUrl()
+    {
+        return $this->urlBuilder->getBaseUrl([
+            '_type' => UrlInterface::URL_TYPE_MEDIA
+        ]) . $this->mediaPath;
+    }
+
+    /**
+     * Get image data
+     *
+     * @param  string $fileName
+     * @return array
+     */
+    public function getImageData($fileName)
+    {
+        if (!$this->isExist($fileName)) {
+            return [];
+        }
+
+        $stat = $this->getStat($fileName);
+        return [
+            'name' => $fileName,
+            'url'  => $this->getBaseUrl() . '/' . ltrim($fileName, '/'),
+            'size' => isset($stat['size']) ? $stat['size'] : 0,
+            'type' => $this->getMimeType($fileName)
+        ];
+    }
+}