import 'dart:io';
import 'dart:ui' as ui;

import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:integration_test/integration_test.dart';
import 'package:jj_mkvmaker/app/app_controller.dart';
import 'package:jj_mkvmaker/app/i18n_controller.dart';
import 'package:jj_mkvmaker/l10n/tr.dart';
import 'package:jj_mkvmaker/platform/windows/desktop_storage_service.dart';
import 'package:jj_mkvmaker/platform/windows/process_media_tool.dart';
import 'package:jj_mkvmaker/services/platform_services.dart';
import 'package:jj_mkvmaker/ui/explorer_page.dart';
import 'package:jj_mkvmaker/ui/theme.dart';
import 'package:path/path.dart' as p;

import 'support/temp_dir.dart';
import '../test/support/test_explorer_device.dart';

/// 264 · 265 (관리자 지시 10/21): 폴더를 합쳐 옮긴 뒤 - 알림에 "n개는 원본에 남음 (건너뜀)" · 펼쳐 둔 원본 폴더를 다시 읽어
/// 옮겨진 파일은 보이지 않고 남은 것만 보인다. ko · en · ja × 960 · 1400 (두 창). 시험 폴더 안에서만 (실제 이동, 휴지통 쓰지 않음)
void main() {
  late TestExplorerDevice device;
  setUp(() => device = TestExplorerDevice());
  IntegrationTestWidgetsFlutterBinding.ensureInitialized();
  final out = Platform.environment['JJ_SHOT_DIR'] ?? '';

  for (final lang in ['ko', 'en', 'ja']) {
    for (final (w, h) in [(960, 600), (1400, 800)]) {
      testWidgets('264 · 265 이동 뒤 $lang ${w}x$h', (t) async {
        t.view.physicalSize = Size(w.toDouble(), h.toDouble());
        t.view.devicePixelRatio = 1;
        addTearDown(t.view.reset);
        await t.runAsync(() => i18n.apply(lang, save: false));
        addTearDown(() => i18n.apply('ko', save: false));
        final tmp = testTempDir('jj_moveleft_');
        final left = p.join(tmp.path, 'left'), right = p.join(tmp.path, 'right');
        final d = p.join(left, 'D');
        File(p.join(d, 'same.txt'))
          ..createSync(recursive: true)
          ..writeAsStringSync('old')
          ..setLastModifiedSync(DateTime(2026, 1, 1));
        File(p.join(d, 'add.txt')).writeAsStringSync('a');
        File(p.join(right, 'D', 'same.txt'))
          ..createSync(recursive: true)
          ..writeAsStringSync('NEWER');
        final c = AppController(PlatformServices(mediaTool: ProcessMediaTool('x', 'y'), storage: DesktopStorageService()));
        c.settings
          ..explorer.paths = [left, right]
          ..copy.conflict = 'overwrite';
        final root = p.rootPrefix(tmp.path);
        device.volumes = () => [(root, root.replaceAll(RegExp(r'[\\/]+$'), ''))];
        final shotKey = GlobalKey();
        await t.pumpWidget(RepaintBoundary(
          key: shotKey,
          child: MaterialApp(theme: buildTheme(), debugShowCheckedModeBanner: false, home: ExplorerPage(device: device, c: c)),
        ));
        Future<void> settle(bool Function() done, {int rounds = 150}) async {
          for (var i = 0; i < rounds && !done(); i++) {
            await t.runAsync(() => Future<void>.delayed(const Duration(milliseconds: 40)));
            await t.pump();
          }
          await t.pump(const Duration(milliseconds: 300));
        }

        Future<void> shot(String name) async {
          expect(t.takeException(), isNull, reason: '$name 넘침');
          if (out.isEmpty) return;
          final b = shotKey.currentContext!.findRenderObject()! as RenderRepaintBoundary;
          final img = await t.runAsync(() => b.toImage());
          final bytes = await t.runAsync(() => img!.toByteData(format: ui.ImageByteFormat.png));
          Directory(out).createSync(recursive: true);
          File(p.join(out, 'moveleft_${name}_${lang}_$w.png')).writeAsBytesSync(bytes!.buffer.asUint8List());
        }

        await settle(() => find.text('D').evaluate().length >= 2);
        // 왼쪽 D 를 눌러 펼치고 (고른 것) 안의 add.txt 가 보이게
        await t.tap(find.text('D').first);
        await settle(() => find.text('add.txt').evaluate().isNotEmpty);
        await shot('1_before');
        await t.tap(find.text(tr('이동')).first);
        await settle(() => find.widgetWithText(FilledButton, tr('이동')).evaluate().isNotEmpty);
        await t.tap(find.widgetWithText(FilledButton, tr('이동')));
        await settle(() => find.byType(LinearProgressIndicator).evaluate().isEmpty && find.byType(SnackBar).evaluate().isNotEmpty);
        await settle(() => false, rounds: 10); // 알림이 다 올라오게
        expect(File(p.join(right, 'D', 'add.txt')).existsSync(), isTrue);
        expect(File(p.join(d, 'same.txt')).readAsStringSync(), 'old', reason: '받는 쪽이 더 새것이라 원본에 남음');
        expect(find.textContaining(trf('{0}개는 원본에 남았습니다 (건너뜀).', [1])), findsOneWidget, reason: '264: 알림에');
        expect(find.text('add.txt'), findsNothing, reason: '265: 원본 D 를 다시 읽음');
        expect(find.text('same.txt'), findsOneWidget);
        await shot('2_after');
        ScaffoldMessenger.of(t.element(find.byType(ExplorerPage))).clearSnackBars();
        await settle(() => false, rounds: 20);
      });
    }
  }
}