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

import 'package:flutter/gestures.dart' show kSecondaryMouseButton;
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter/services.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/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/job_view.dart' show TransferJobView;
import 'package:jj_mkvmaker/ui/explorer_page.dart';
import 'package:jj_mkvmaker/ui/theme.dart';
import 'package:path/path.dart' as p;

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

/// 탐색기 사용 점검 (관리자 c5 지시 10/22, 분석용 - 커밋하지 않음): 처음 설정 그대로 사용자처럼 써 보며 단계마다 PNG.
/// 저장 장치는 시험 폴더 둘 (TestExplorerDevice), 휴지통은 가짜 (사용자 휴지통에 흔적을 남기지 않게), 설정은 메모리에만.
void main() {
  late TestExplorerDevice device;
  setUp(() => device = TestExplorerDevice());
  IntegrationTestWidgetsFlutterBinding.ensureInitialized();
  final out = Platform.environment['JJ_SHOT_DIR'] ?? p.join(Directory.systemTemp.path, 'jj_shots_use');

  for (final (w, h) in [(1920, 1040), (960, 600), (412, 900)]) {
    testWidgets('탐색기 사용 ${w}x$h', (t) async {
      t.view.physicalSize = Size(w.toDouble(), h.toDouble());
      t.view.devicePixelRatio = 1;
      addTearDown(t.view.reset);
      await t.runAsync(() => i18n.apply('ko', save: false));
      useTestRecycleBin();
      // 캡처 비교가 흔들리지 않게 시험 폴더 이름 · 파일 시각을 고정 (관리자 지시 10/22) - 끝나면 지움
      final tmp = Directory(p.join(Directory.systemTemp.path, 'jj_usechk_fixed_$w'));
      if (tmp.existsSync()) tmp.deleteSync(recursive: true);
      tmp.createSync();
      addTearDown(() {
        if (tmp.existsSync()) tmp.deleteSync(recursive: true);
      });
      appTempInto(tmp);
      final a = Directory(p.join(tmp.path, 'Videos'))..createSync();
      final b = Directory(p.join(tmp.path, 'Backup'))..createSync();
      for (final n in ['Show S01', 'Movies', 'Docs']) {
        Directory(p.join(a.path, n)).createSync();
      }
      for (var i = 1; i <= 3; i++) {
        File(p.join(a.path, 'Show S01', 'ep0$i.mkv')).writeAsBytesSync(List.filled(5000 * i, 0));
      }
      File(p.join(a.path, 'Movies', 'film.mp4')).writeAsBytesSync(List.filled(9000, 0));
      File(p.join(a.path, 'notes.txt')).writeAsStringSync('memo');
      File(p.join(a.path, 'report.pdf')).writeAsStringSync('pdf');
      for (final f in tmp.listSync(recursive: true).whereType<File>()) {
        f.setLastModifiedSync(DateTime(2026, 10, 22, 9));
      }
      device.volumes = () => [(a.path, 'C:'), (b.path, 'D:')];
      final c = AppController(PlatformServices(mediaTool: ProcessMediaTool('x', 'y'), storage: DesktopStorageService()));
      final shotKey = GlobalKey();
      await t.runAsync(() => t.pumpWidget(RepaintBoundary(
            key: shotKey,
            child: MaterialApp(theme: buildTheme(), debugShowCheckedModeBanner: false, home: ExplorerPage(device: device, c: c)),
          )));
      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();
        }
      }

      var no = 0;
      Future<void> shot(String name) async {
        await settle(3);
        final r = shotKey.currentContext!.findRenderObject()! as RenderRepaintBoundary;
        final img = await t.runAsync(() => r.toImage());
        final bytes = await t.runAsync(() => img!.toByteData(format: ui.ImageByteFormat.png));
        Directory(out).createSync(recursive: true);
        no++;
        File(p.join(out, 'use_${w}_${no.toString().padLeft(2, '0')}_$name.png')).writeAsBytesSync(bytes!.buffer.asUint8List());
      }

      // 열린 창 (대화 상자 · 메뉴) 의 글을 기록 - 무엇이 떴는지
      void dump(String step) {
        final texts = <String>{};
        for (final f in [find.byType(Dialog), find.byType(PopupMenuItem), find.byType(BottomSheet), find.byType(SnackBar)]) {
          for (final e in find.descendant(of: f, matching: find.byType(Text)).evaluate()) {
            final s = (e.widget as Text).data ?? (e.widget as Text).textSpan?.toPlainText() ?? '';
            if (s.isNotEmpty) texts.add(s);
          }
        }
        // ignore: avoid_print
        print('[$w] $step: ${texts.isEmpty ? '(뜬 창 없음)' : texts.join(' | ')}');
      }

      // 복사 · 이동이 끝나 진행 패널이 다 내려갈 때까지 (실제 시간, 10초까지) - 캡처가 PC 빠르기에 따라 달라지지 않게
      Future<void> jobsGone() async {
        for (var i = 0; i < 100 && find.byType(TransferJobView).evaluate().isNotEmpty; i++) {
          await t.runAsync(() => Future<void>.delayed(const Duration(milliseconds: 100)));
          await t.pump(const Duration(milliseconds: 100));
        }
        await settle();
      }

      // 한 단계: 실패해도 다음 단계로 (못 찾은 것 자체가 점검 결과)
      Future<void> step(String name, Future<void> Function() act) async {
        try {
          await act();
          await settle();
          dump(name);
        } catch (e) {
          // ignore: avoid_print
          print('[$w] $name: 실패 - ${e.toString().split('\n').first}');
        }
        await shot(name);
      }

      // 두 창이면 왼쪽 창의 것만 (같은 폴더가 두 창에 보여 오른쪽 것을 누르지 않게)
      Finder leftOf(Finder f) {
        final half = w / 2; // 규칙 7: 폰 세로도 두 창
        final el = f.evaluate().where((e) => t.getCenter(find.byWidget(e.widget).first).dx < half).toList();
        if (el.isEmpty) throw StateError('왼쪽 창에 없음');
        return find.byWidget(el.first.widget).first;
      }
      Finder txt(String name) => leftOf(find.text(name));
      Finder row(String name) => find.ancestor(of: txt(name), matching: find.byType(InkWell)).first;
      Finder tip(String s) => find.byWidgetPredicate((x) => x is Tooltip && (x.message ?? '').startsWith(s)).first;
      // 줄 끝 표시 단추: 이름 글과 같은 높이의 것
      Finder mark(String name) {
        final y = t.getCenter(txt(name)).dy;
        final half = w / 2; // 규칙 7: 폰 세로도 두 창
        final all = find.byWidgetPredicate((x) => x is IconButton && (x.tooltip ?? '').startsWith('표시'));
        final best = all.evaluate().where((e) => t.getCenter(find.byWidget(e.widget)).dx < half).toList()
          ..sort((m, n) => (t.getCenter(find.byWidget(m.widget)).dy - y).abs().compareTo((t.getCenter(find.byWidget(n.widget)).dy - y).abs()));
        return find.byWidget(best.first.widget);
      }
      // 대화 상자의 확인 쪽 단추 (마지막 FilledButton)
      Future<void> okDialog() => t.tap(find.descendant(of: find.byType(Dialog), matching: find.byType(FilledButton)).last);
      void files(String when) {
        final left = [
          for (final e in tmp.listSync(recursive: true))
            if (e is File) p.relative(e.path, from: tmp.path)
        ]..sort();
        // ignore: avoid_print
        print('[$w] 파일 ($when): ${left.join(', ')}');
      }
      Finder paneBtn(String s) => find.byWidgetPredicate((x) => x is IconButton && (x.tooltip ?? '').startsWith(s)).first;

      await settle(30);
      await shot('처음');
      dump('처음');
      await step('Show S01 누르기', () => t.tap(txt('Show S01')));
      await step('Show S01 다시 누르기 (접히나)', () => t.tap(txt('Show S01')));
      if (find.text('ep01.mkv').evaluate().isEmpty) await t.tap(txt('Show S01'));
      await settle();
      await step('ep01 한 번 누르기 (선택)', () => t.tap(txt('ep01.mkv')));
      // 규칙 4 (E3): 표시는 선택 모드에서만 - [선택] 을 켜고 표시
      Future<void> selectOn() async {
        if (find.text('선택 끝').evaluate().isEmpty) await t.tap(tip('선택'));
      }
      await step('선택 켜기', selectOn);
      await step('ep02 표시 단추', () => t.tap(mark('ep02.mkv')));
      await step('ep03 표시 단추', () => t.tap(mark('ep03.mkv')));
      await step('복사 단추', () => t.tap(tip('복사')));
      await step('복사 확인 누르기', () async {
        if (find.byType(Dialog).evaluate().isNotEmpty) {
          await okDialog();
        } else {
          await t.tap(txt('D:'));
          await settle();
          await t.tap(tip('붙여넣기'));
          await settle();
          if (find.byType(Dialog).evaluate().isNotEmpty) await okDialog();
          await settle();
          await t.tap(txt('C:'));
        }
        await jobsGone();
      });
      await settle(20);
      files('복사 뒤');
      await step('선택 모드 켜기 (켜져 있으면 그대로)', selectOn);
      await step('선택 모드 - Show S01 누르기', () => t.tap(txt('Show S01')));
      await step('선택 모드 - 안의 ep01 누르기', () => t.tap(txt('ep01.mkv')));
      await step('선택 모드 - Show S01 다시 누르기', () => t.tap(txt('Show S01')));
      await step('선택 단추 (끄기)', () => t.tap(tip('선택')));
      await step('ep03 오른쪽 클릭', () => t.tap(row('ep03.mkv'), buttons: kSecondaryMouseButton));
      await step('메뉴 이름 변경', () => t.tap(find.text('이름 변경').last));
      await step('새 이름 넣고 확인', () async {
        await t.enterText(find.descendant(of: find.byType(Dialog), matching: find.byType(TextField)), 'ep03_new.mkv');
        await settle(2);
        await okDialog();
      });
      files('이름 바꾼 뒤');
      await step('ep01 오른쪽 클릭', () => t.tap(row('ep01.mkv'), buttons: kSecondaryMouseButton));
      await step('메뉴 삭제', () => t.tap(find.text('삭제').last));
      await step('삭제 확인 누르기', okDialog);
      files('지운 뒤');
      await step('Movies 누르기', () => t.tap(txt('Movies')));
      await step('창 뒤로', () => t.tap(paneBtn('뒤로')));
      await step('창 앞으로', () => t.tap(paneBtn('앞으로')));
      await step('선택 켜기 2', selectOn);
      await step('film 표시 단추', () => t.tap(mark('film.mp4')));
      await step('이동 단추', () => t.tap(tip('이동')));
      await step('이동 확인 누르기', () async {
        if (find.byType(Dialog).evaluate().isNotEmpty) {
          await okDialog();
        } else {
          await t.tap(txt('D:'));
          await settle();
          await t.tap(tip('붙여넣기'));
        }
        await jobsGone();
      });
      await settle(20);
      files('이동 뒤');
      await step('notes 누르고 Space (TC 식 고르기)', () async {
        await t.tap(txt('notes.txt'));
        await settle(4);
        await t.sendKeyEvent(LogicalKeyboardKey.space);
      });
      await step('Insert', () => t.sendKeyEvent(LogicalKeyboardKey.insert));
      await step('report 누르고 Enter (열기 대신 무엇이)', () async {
        await t.tap(txt('report.pdf'));
        await settle(4);
      });
      // 끝 상태: 실제 파일
      final left = [
        for (final e in tmp.listSync(recursive: true))
          if (e is File) p.relative(e.path, from: tmp.path)
      ]..sort();
      // ignore: avoid_print
      print('[$w] 끝 파일: ${left.join(', ')}');
      await t.pumpWidget(const SizedBox());
      await settle(4);
    });
  }
}