import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:jj_mkvmaker/ui/notice.dart';

/// E4 U2 약속 시험 (모듈 하나에 한 장): lib/ui/notice.dart 맨 위 약속을 그대로 본다.
void main() {
  late ScaffoldMessengerState messenger;
  Future<void> open(WidgetTester tester) async {
    final key = GlobalKey<ScaffoldMessengerState>();
    await tester.pumpWidget(MaterialApp(scaffoldMessengerKey: key, home: const Scaffold(body: SizedBox())));
    messenger = key.currentState!;
  }

  testWidgets('단추가 있어도 timed 는 noticeDuration 뒤 저절로 닫힘 (U2) · 앱 전체 한 값', (tester) async {
    await open(tester);
    var pressed = 0;
    showNotice(messenger, text: '복사했습니다', action: ('폴더 열기', () => pressed++));
    await tester.pumpAndSettle();
    expect(find.text('복사했습니다'), findsOneWidget);
    expect(find.byIcon(Icons.close), findsOneWidget, reason: '✕ 로 바로 닫기');
    await tester.pump(noticeDuration - const Duration(seconds: 1));
    expect(find.text('복사했습니다'), findsOneWidget, reason: '정해진 시간 전에는 남음');
    await tester.pump(const Duration(seconds: 2));
    await tester.pumpAndSettle();
    expect(find.text('복사했습니다'), findsNothing);
    expect(pressed, 0);
    expect(noticeDuration, const Duration(seconds: 10));
  });

  testWidgets('단추를 누르면 그 일을 하고 닫힘', (tester) async {
    await open(tester);
    var pressed = 0;
    showNotice(messenger, text: '지웠습니다', action: ('되돌리기', () => pressed++));
    await tester.pumpAndSettle();
    await tester.tap(find.text('되돌리기'));
    await tester.pumpAndSettle();
    expect(pressed, 1);
    expect(find.text('지웠습니다'), findsNothing);
  });

  testWidgets('untilClosed 는 오래 지나도 남고 ✕ · 부르는 쪽이 닫음', (tester) async {
    await open(tester);
    showNotice(messenger, life: NoticeLife.untilClosed, content: const Text('DNS 안내'), action: ('바꾸기', () {}));
    await tester.pumpAndSettle();
    await tester.pump(const Duration(minutes: 30));
    expect(find.text('DNS 안내'), findsOneWidget);
    await tester.tap(find.byIcon(Icons.close));
    await tester.pumpAndSettle();
    expect(find.text('DNS 안내'), findsNothing);
    final bar = showNotice(messenger, life: NoticeLife.untilClosed, text: '준비 중');
    await tester.pumpAndSettle();
    bar!.close();
    await tester.pumpAndSettle();
    expect(find.text('준비 중'), findsNothing);
  });

  testWidgets('clearOthers 는 앞 알림을 치우고 바로 보임 · messenger 가 없으면 null', (tester) async {
    await open(tester);
    showNotice(messenger, life: NoticeLife.untilClosed, text: '앞 알림');
    await tester.pumpAndSettle();
    showNotice(messenger, text: '되돌리기 알림', clearOthers: true, action: ('실행 취소', () {}));
    await tester.pumpAndSettle();
    expect(find.text('앞 알림'), findsNothing);
    expect(find.text('되돌리기 알림'), findsOneWidget);
    expect(showNotice(null, text: 'x'), isNull);
  });
}