import 'package:flutter/services.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:ikar/core/media/clipboard/clipboard_channel.dart';
import 'package:ikar/core/media/clipboard/pasted_attachment.dart';

void main() {
  TestWidgetsFlutterBinding.ensureInitialized();
  const channel = MethodChannel('ru.ikar.app/clipboard');
  final messenger =
      TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger;

  tearDown(() => messenger.setMockMethodCallHandler(channel, null));

  test('native image preserves format and bytes', () async {
    final bytes = Uint8List.fromList([71, 73, 70, 56, 57, 97]);
    messenger.setMockMethodCallHandler(
      channel,
      (call) async => {'image': bytes, 'imageExtension': 'GIF'},
    );
    final result = await ClipboardChannel.read();
    expect(result!.png, bytes);
    expect(result.imageExtension, '.gif');
  });

  test('Android cached files are passed through', () async {
    messenger.setMockMethodCallHandler(
      channel,
      (call) async => {
        'files': ['/synthetic/cache/pasted.png'],
      },
    );
    final result = await ClipboardChannel.read();
    expect(result!.paths, ['/synthetic/cache/pasted.png']);
  });

  test('clipboard permission failure is handled as unavailable', () async {
    messenger.setMockMethodCallHandler(channel, (call) async {
      throw PlatformException(code: 'DENIED');
    });
    expect(await ClipboardChannel.hasMedia(), isFalse);
    expect(await ClipboardChannel.read(), isNull);
  });

  test('untrusted extension cannot become a path', () async {
    messenger.setMockMethodCallHandler(
      channel,
      (call) async => {
        'image': Uint8List.fromList([1]),
        'imageExtension': '../jpg',
      },
    );
    expect((await ClipboardChannel.read())!.imageExtension, isNull);
  });

  test('keyboard mime types map to image extensions', () {
    expect(pastedImageExtension('image/jpeg'), '.jpg');
    expect(pastedImageExtension('image/gif'), '.gif');
    expect(pastedImageExtension('image/webp'), '.webp');
    expect(pastedImageExtension('image/png'), '.png');
  });
}