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/core/batch_rename.dart';
import 'package:jj_mkvmaker/core/file_ops.dart';
import 'package:jj_mkvmaker/core/text_codec.dart';
import 'package:jj_mkvmaker/ui/batch_rename_dialog.dart';
import 'package:jj_mkvmaker/ui/explorer_grid.dart';
import 'package:jj_mkvmaker/ui/storage_page.dart';
import 'package:jj_mkvmaker/ui/text_viewer.dart';
import 'package:jj_mkvmaker/ui/theme.dart';
import 'support/temp_dir.dart';
import 'package:path/path.dart' as p;

/// X-plore 비교 g · h · i · P3 (관리자 지시 10/18): 격자 보기 · 글 뷰어 · 일괄 이름 (날짜) · 저장 공간 그림을 PNG 로
/// (JJ_SHOT_DIR, 없으면 임시 폴더). 크기 412 · 960, 언어 ko · en. 시험 파일은 임시 폴더에만.
void main() {
  IntegrationTestWidgetsFlutterBinding.ensureInitialized();
  // ⑦ 밝은 화면 캡처: JJ_SHOT_THEME=light (JJ_SHOT_DIR 를 따로 두어 어두운 것과 견줌)
  if (Platform.environment['JJ_SHOT_THEME'] == 'light') JjColors.use(Brightness.light);
  final out = Platform.environment['JJ_SHOT_DIR'] ?? p.join(Directory.systemTemp.path, 'jj_shots_xptools');

  for (final lang in ['ko', 'en']) {
    for (final (w, h) in [(412, 900), (960, 600)]) {
      testWidgets('X-plore 도구 $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));
        // 관리자 지시 (10/24): 폴더 이름 · 시각을 실행마다 같게 (캡처가 흔들리지 않게 - 시험 쪽에서만)
        final tmp = testFixedTempDir('jj_xptshot_fixed');
        // 그림 (색이 다른 작은 그림) · 동영상 이름 · 글 (CP949)
        final pics = <String>[];
        for (var i = 0; i < 7; i++) {
          final im = img.Image(width: 64, height: 48);
          img.fill(im, color: img.ColorRgb8(40 + i * 30, 120, 200 - i * 20));
          if (i == 0) im.exif.exifIfd['DateTimeOriginal'] = img.IfdValueAscii('2024:05:01 12:34:56');
          final f = File(p.join(tmp.path, 'IMG_${1000 + i}.jpg'))..writeAsBytesSync(img.encodeJpg(im));
          pics.add(f.path);
        }
        File(p.join(tmp.path, 'clip.mkv')).writeAsBytesSync(List.filled(10, 0));
        final txt = File(p.join(tmp.path, 'memo.txt'))
          ..writeAsBytesSync(encodeText(List.generate(30, (i) => '${i + 1}번째 줄 - 한글 메모 line $i').join('\n'), 'CP949').bytes);
        for (final (n, size) in [('Videos', 900000), ('Photos', 400000), ('Docs', 120000), ('Music', 60000)]) {
          final d = Directory(p.join(tmp.path, 'disk', n))..createSync(recursive: true);
          File(p.join(d.path, 'big.bin')).writeAsBytesSync(List.filled(size, 0));
        }
        File(p.join(tmp.path, 'disk', 'loose.bin')).writeAsBytesSync(List.filled(80000, 0));
        pinTestTimes(tmp);

        final shotKey = GlobalKey();
        final nav = GlobalKey<NavigatorState>();
        await t.runAsync(() => t.pumpWidget(RepaintBoundary(
              key: shotKey,
              child: MaterialApp(navigatorKey: nav, theme: buildTheme(), debugShowCheckedModeBanner: false, home: const Scaffold()),
            )));
        Future<void> settle([int n = 12]) async {
          for (var i = 0; i < n; i++) {
            await t.runAsync(() => Future<void>.delayed(const Duration(milliseconds: 60)));
            await t.pump();
          }
        }

        Future<void> shot(String name) async {
          await settle(4);
          final r = shotKey.currentContext!.findRenderObject()! as RenderRepaintBoundary;
          final image = await t.runAsync(() => r.toImage());
          final bytes = await t.runAsync(() => image!.toByteData(format: ui.ImageByteFormat.png));
          Directory(out).createSync(recursive: true);
          File(p.join(out, 'xptools_${name}_${lang}_$w.png')).writeAsBytesSync(bytes!.buffer.asUint8List());
        }

        // g 격자 보기
        final entries = [
          for (final x in [...pics, p.join(tmp.path, 'clip.mkv'), txt.path])
            FileEntry(x, isDir: false, size: File(x).lengthSync(), modified: DateTime(2026, 10, 18)),
        ];
        nav.currentState!.push(MaterialPageRoute<void>(
          builder: (_) => ExplorerGridPage(
            title: 'Photos',
            entries: entries,
            imageExts: const ['jpg'],
            videoThumb: (_) async => null,
            onOpen: (_) async {},
          ),
        ));
        await settle(20);
        await shot('grid');
        nav.currentState!.pop();
        await settle();

        // h 글 뷰어 (CP949 를 스스로 알아봄)
        nav.currentState!.push(MaterialPageRoute<void>(builder: (_) => TextViewerPage(path: txt.path)));
        await settle(20);
        await shot('text');
        nav.currentState!.pop();
        await settle();

        // i 일괄 이름 바꾸기 - [D] (사진은 찍은 때)
        showBatchRename(nav.currentContext!, pics.take(4).toList(),
            isDir: (_) => false, initial: const RenameRule(template: '[D]_[T]_[C]'));
        await settle(30);
        await shot('rename_date');
        await t.tap(find.text(lang == 'ko' ? '취소' : 'Cancel').last);
        await settle();

        // P3 저장 공간 그림
        nav.currentState!.push(MaterialPageRoute<void>(builder: (_) => StorageAnalysisPage(root: p.join(tmp.path, 'disk'))));
        await settle(30);
        await t.tap(find.text(lang == 'ko' ? '칸 그림' : 'Treemap'));
        await settle();
        await shot('storage_chart');
        nav.currentState!.pop();
        await settle();
        await t.pumpWidget(const SizedBox());
        await settle(4);
      });
    }
  }
}