Update main.php

admin/dashboard/main.php

@@ -146,4 +146,63 @@ function time_elapsed_string($datetime, $full = false) {
     if (!$full) $string = array_slice($string, 0, 1);
     return $string ? implode(', ', $string) . ' ago' : 'just now';
 }
+
+const GITHUB_SOURCE_API = 'https://api.github.com/repos/Supernova3339/anonfiles/releases';
+
+public function checkForUpdates(Request $request, Response $response): Response
+    {
+        $jsonResponse = [
+            'status' => 'OK',
+            'message' => 'Already Latest Version'),
+            'upgrade' => false,
+        ];
+
+        $acceptPrerelease = param($request, 'prerelease', 'false') === 'true';
+
+        try {
+            $json = $this->getApiJson();
+
+            foreach ($json as $release) {
+                if (
+                    $release->prerelease === $acceptPrerelease &&
+                    version_compare($release->tag_name, PLATFORM_VERSION, '>') &&
+                    version_compare($release->tag_name, 'prerelease', '<')
+                ) {
+                    $jsonResponse['message'] = 'New version available!', [$release->tag_name]);
+                    $jsonResponse['upgrade'] = true;
+                    break;
+                }
+
+                if (version_compare($release->tag_name, PLATFORM_VERSION, '<=')) {
+                    break;
+                }
+            }
+        } catch (RuntimeException $e) {
+            $jsonResponse['status'] = 'ERROR';
+            $jsonResponse['message'] = $e->getMessage();
+        }
+
+        return json($response, $jsonResponse);
+    }
+
+    protected function getApiJson()
+    {
+        $opts = [
+            'http' => [
+                'method' => 'GET',
+                'header' => [
+                    'User-Agent: AnonFiles-App',
+                    'Accept: application/vnd.github.v3+json',
+                ],
+            ],
+        ];
+
+        $data = @file_get_contents(self::GITHUB_SOURCE_API, false, stream_context_create($opts));
+
+        if ($data === false) {
+            throw new RuntimeException('Cannot contact the Github API. Try again.');
+        }
+
+        return json_decode($data);
+    }
 ?>