Create RefdsFileManager.swift

Sources/RefdsShared/File/RefdsFileManager.swift

@@ -0,0 +1,39 @@
+import Foundation
+
+public enum RefdsFileManagerPrivacy: String {
+    case `public` = ""
+    case `private` = ".private"
+}
+
+public final class RefdsFileManager {
+    public static var `default` = RefdsFileManager()
+    private var fileManager = FileManager.default
+
+    private init() {}
+
+    public func path(
+        with name: String,
+        privacy: RefdsFileManagerPrivacy = .public
+    ) -> URL? {
+        guard let documentsURL = fileManager.urls(
+            for: .documentDirectory,
+            in: .userDomainMask
+        ).first else { return nil }
+
+        switch privacy {
+        case .public:
+            return documentsURL.appendingPathComponent(name)
+
+        case .private:
+            let privateURL = documentsURL.appendingPathComponent(privacy.rawValue)
+            do {
+                try fileManager.createDirectory(
+                    at: privateURL,
+                    withIntermediateDirectories: true,
+                    attributes: nil
+                )
+            } catch { return nil }
+            return privateURL.appendingPathComponent(name)
+        }
+    }
+}