import 'package:flutter/widgets.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:kooltap/app/app_lifecycle_lock.dart';

void main() {
  late DateTime now;
  late int lockCount;

  AppLifecycleLockObserver observer({bool Function()? shouldLock}) {
    return AppLifecycleLockObserver(
      onLock: () => lockCount++,
      shouldLock: shouldLock,
      clock: () => now,
    );
  }

  setUp(() {
    now = DateTime(2026, 1, 1, 20);
    lockCount = 0;
  });

  test('locks when the app returns after the grace period', () {
    final lock = observer();

    lock.didChangeAppLifecycleState(AppLifecycleState.inactive);
    lock.didChangeAppLifecycleState(AppLifecycleState.hidden);
    lock.didChangeAppLifecycleState(AppLifecycleState.paused);
    now = now.add(const Duration(seconds: 30));
    lock.didChangeAppLifecycleState(AppLifecycleState.resumed);

    expect(lockCount, 1);
  });

  test('does not lock after a short trip to the background', () {
    final lock = observer();

    lock.didChangeAppLifecycleState(AppLifecycleState.paused);
    now = now.add(const Duration(seconds: 10));
    lock.didChangeAppLifecycleState(AppLifecycleState.resumed);

    expect(lockCount, 0);
  });

  test('does not lock when only inactive', () {
    final lock = observer();

    lock.didChangeAppLifecycleState(AppLifecycleState.inactive);
    now = now.add(const Duration(minutes: 5));
    lock.didChangeAppLifecycleState(AppLifecycleState.resumed);

    expect(lockCount, 0);
  });

  test('does not lock when auto-lock is disabled', () {
    final lock = observer(shouldLock: () => false);

    lock.didChangeAppLifecycleState(AppLifecycleState.paused);
    now = now.add(const Duration(minutes: 5));
    lock.didChangeAppLifecycleState(AppLifecycleState.resumed);

    expect(lockCount, 0);
  });
}