claude_session_viewer/lib/services/native_picker.dart

import 'package:flutter/services.dart';

/// Native file picker that shows hidden files/folders on macOS.
/// Uses a custom method channel to NSOpenPanel with showsHiddenFiles = true,
/// which the file_picker package hardcodes to false.
class NativePicker {
  static const _channel = MethodChannel('com.svrnty.native_picker');

  /// Opens a folder picker that shows hidden directories.
  /// Returns the selected folder path, or null if cancelled.
  static Future<String?> getDirectoryPath({String? initialDirectory}) async {
    try {
      return _channel.invokeMethod<String?>('getDirectoryPath', {
        'initialDirectory': initialDirectory,
      });
    } on PlatformException catch (e) {
      throw Exception('Native picker error: ${e.message}');
    }
  }

  /// Opens a file picker that shows hidden files, filtered to specific extensions.
  /// Returns the selected file path, or null if cancelled.
  static Future<String?> pickFile({
    List<String> allowedExtensions = const [],
    String? initialDirectory,
  }) async {
    try {
      final result = await _channel.invokeMethod<List?>('pickFiles', {
        'allowMultiple': false,
        'allowedExtensions': allowedExtensions,
        'initialDirectory': initialDirectory,
      });
      if (result != null && result.isNotEmpty) {
        return result.first as String;
      }
      return null;
    } on PlatformException catch (e) {
      throw Exception('Native picker error: ${e.message}');
    }
  }
}