import 'dart:io';
import 'dart:typed_data';

import 'package:flutter_test/flutter_test.dart';
import 'package:halkyon_app/halkyon_app.dart';
import 'package:path/path.dart' as p;

void main() {
  late Directory folder;

  setUp(() async {
    folder = await Directory.systemTemp.createTemp('file_saver_test');
  });
  tearDown(() => folder.delete(recursive: true));

  test("a saved file is the own user's alone where the platform has modes, "
      'set before anything is written', () async {
    final path = p.join(folder.path, 'halkyon-recovery-codes.txt');
    // One there before, readable by everyone.
    await File(path).writeAsString('old');
    if (!Platform.isWindows) {
      await Process.run('chmod', ['644', path]);
    }

    await writePrivately(path, Uint8List.fromList([1, 2, 3]));

    expect(await File(path).readAsBytes(), [1, 2, 3]);
    if (Platform.isLinux || Platform.isMacOS) {
      expect(File(path).statSync().mode & 0x1ff, 0x180, reason: '0600');
    }
  }, skip: Platform.isWindows ? 'no modes' : false);

  test("the system picker's copy in the temporary folder is removed, "
      'others left', () async {
    final copy = File(p.join(folder.path, 'halkyon-recovery-phrase.txt'));
    final other = File(p.join(folder.path, 'something-else.txt'));
    await copy.writeAsString('the phrase');
    await other.writeAsString('other');

    await forgetPickerCopy('halkyon-recovery-phrase.txt', temporary: folder);
    await forgetPickerCopy('not-there.txt', temporary: folder);

    expect(copy.existsSync(), isFalse);
    expect(other.existsSync(), isTrue);
  });
}