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:image/image.dart' as img;
import 'package:integration_test/integration_test.dart';
import 'package:jj_mkvmaker/app/i18n_controller.dart';
import 'package:jj_mkvmaker/ui/ai_upscale/upscale_compare.dart';
import 'package:jj_mkvmaker/ui/android_file_browser.dart';
import 'package:jj_mkvmaker/ui/theme.dart';
import 'package:path/path.dart' as p;

import 'support/temp_dir.dart';

/// W JjTitleBar (관리자 10/24): 위 막대를 모을 때 캡처가 없던 곳을 찍는다 - AI 올리기 비교 (원본 · 올린 것 고르기) ·
/// 앱 안 폴더 고르기 (새 폴더 · 고르기 단추). 둘 다 넓은 단추가 있어 좁으면 제목 아래 줄로 간다. 412 · 960 × ko · ja (JJ_SHOT_DIR)
void main() {
  IntegrationTestWidgetsFlutterBinding.ensureInitialized();
  final out = Platform.environment['JJ_SHOT_DIR'] ?? p.join(Directory.systemTemp.path, 'jj_shots_titlebar');

  for (final (w, h) in [(412, 900), (960, 700)]) {
    for (final lang in ['ko', 'ja']) {
      testWidgets('위 막대 자리 $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 = testFixedTempDir('jj_titlebar_fixed');
        final a = p.join(tmp.path, 'a.png'), b = p.join(tmp.path, 'b.png');
        File(a).writeAsBytesSync(img.encodePng(img.Image(width: 4, height: 4)));
        File(b).writeAsBytesSync(img.encodePng(img.Image(width: 16, height: 16)));
        Directory(p.join(tmp.path, '영상')).createSync();
        Directory(p.join(tmp.path, '사진')).createSync();
        pinTestTimes(tmp);
        final key = GlobalKey();
        final nav = GlobalKey<NavigatorState>();
        await t.pumpWidget(RepaintBoundary(
          key: key,
          child: MaterialApp(
              theme: buildTheme(), debugShowCheckedModeBanner: false, navigatorKey: nav, home: const Scaffold(body: SizedBox.expand())),
        ));

        Future<void> settle() async {
          for (var i = 0; i < 8; i++) {
            await t.runAsync(() => Future<void>.delayed(const Duration(milliseconds: 60)));
            await t.pump(const Duration(milliseconds: 100));
          }
        }

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

        // 1. AI 올리기 비교
        final compare = nav.currentState!.push<bool>(
            MaterialPageRoute(builder: (_) => UpscaleCompareView(original: a, upscaled: b, title: 'IMG_0001 (4배) - 바다에서 찍은 사진.png')));
        await settle();
        await shot('upscale_compare');
        nav.currentState!.pop(false);
        await settle();
        await compare;

        // 2. 앱 안 폴더 고르기
        final folder = showAndroidFolderBrowser(nav.currentContext!, title: '저장할 폴더', initialDirectory: tmp.path);
        await settle();
        await shot('folder_browser');
        nav.currentState!.pop();
        await settle();
        await folder;
      });
    }
  }
}