pomelo scraps

src/ios/FolderMonitor.swift

@@ -0,0 +1,49 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+// SPDX-FileCopyrightText: Copyright 2024 Pomelo, Stossy11
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+import Foundation
+
+class FolderMonitor {
+    private var folderDescriptor: Int32 = -1
+    private var folderMonitorSource: DispatchSourceFileSystemObject?
+    private let folderURL: URL
+    private let onFolderChange: () -> Void
+    init(folderURL: URL, onFolderChange: @escaping () -> Void) {
+        self.folderURL = folderURL
+        self.onFolderChange = onFolderChange
+        startMonitoring()
+    }
+    private func startMonitoring() {
+        folderDescriptor = open(folderURL.path, O_EVTONLY)
+        guard folderDescriptor != -1 else {
+            print("Failed to open folder descriptor.")
+            return
+        }
+
+        folderMonitorSource = DispatchSource.makeFileSystemObjectSource(
+            fileDescriptor: folderDescriptor,
+            eventMask: .write,
+            queue: DispatchQueue.global()
+        )
+        folderMonitorSource?.setEventHandler { [weak self] in
+            self?.folderDidChange()
+        }
+        folderMonitorSource?.setCancelHandler {
+            close(self.folderDescriptor)
+        }
+        folderMonitorSource?.resume()
+    }
+
+    private func folderDidChange() {
+        // Detect the change and call the refreshcore function
+        print("Folder changed! New file added or removed.")
+        DispatchQueue.main.async { [weak self] in
+            self?.onFolderChange()
+        }
+    }
+    deinit {
+        folderMonitorSource?.cancel()
+    }
+}