implement object storage

1 files changed, 52 insertions, 0 deletions

diff --git a/Digitigrade/StorageProvider/FilesystemStorage.php b/Digitigrade/StorageProvider/FilesystemStorage.php
new file mode 100644
index 0000000..8f67653
--- /dev/null
+++ b/Digitigrade/StorageProvider/FilesystemStorage.php
@@ -0,0 +1,52 @@
+<?php
+namespace Digitigrade\StorageProvider;
+
+use Digitigrade\StorageProvider;
+
+class FilesystemStorage extends StorageProvider {
+    private const BASE_PATH = __DIR__ . '/../../upload/';
+
+    private static function tokenToPath(string $token): string {
+        return self::BASE_PATH . $token;
+    }
+
+    protected function storeFileInternal(string $path): ?string {
+        $token = hash_file('sha256', $path);
+        rename($path, self::tokenToPath($token));
+        return $token;
+    }
+
+    public function exists(string $token): bool {
+        return is_file(self::tokenToPath($token));
+    }
+
+    public function retrieve(string $token): ?string {
+        $path = self::tokenToPath($token);
+        if (!is_readable($path)) {
+            return null;
+        }
+        return file_get_contents($path);
+    }
+
+    public function directUrl(string $token): ?string {
+        return path_to_uri("/upload/$token");
+    }
+
+    public function passthrough(string $token, ?string $mimetype = null) {
+        if (!$this->exists($token)) {
+            throw new \RuntimeException('requested object does not exist');
+        }
+        $path = self::tokenToPath($token);
+        if (!headers_sent()) {
+            header('Content-Type: ' . ($mimetype ?? (mime_content_type($path) ?: 'application/octet-stream')));
+        }
+        readfile($path);
+    }
+
+    public function delete(string $token) {
+        $path = self::tokenToPath($token);
+        if (is_file($path)) {
+            unlink($path);
+        }
+    }
+}
\ No newline at end of file