import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:ikar/frontend/widgets/sliding_pill_nav.dart';

void main() {
  Future<void> pumpNav(
    WidgetTester tester, {
    required int unread,
    double position = 0,
    bool iconsOnly = false,
    ValueChanged<int>? onTap,
  }) => tester.pumpWidget(
    MaterialApp(
      home: Scaffold(
        body: Center(
          child: SizedBox(
            width: 300,
            child: SlidingPillNav(
              items: [
                PillNavItem(
                  icon: Icons.chat_bubble,
                  label: 'Чаты',
                  unreadCount: unread,
                ),
                const PillNavItem(icon: Icons.call, label: 'Звонки'),
                const PillNavItem(icon: Icons.person, label: 'Контакты'),
                const PillNavItem(icon: Icons.settings, label: 'Настройки'),
              ],
              position: position,
              geometry: PillNavGeometry.fromInnerWidth(296, 4),
              iconsOnly: iconsOnly,
              onTap: onTap ?? (_) {},
            ),
          ),
        ),
      ),
    ),
  );

  testWidgets('badge updates and disappears after chats are read', (
    tester,
  ) async {
    await pumpNav(tester, unread: 3);
    expect(find.text('3'), findsOneWidget);
    expect(find.byType(Badge), findsOneWidget);
    final badgeRight = tester.getRect(find.text('3')).right;
    expect(badgeRight, lessThan(tester.getRect(find.text('Чаты')).left));

    await pumpNav(tester, unread: 2);
    expect(find.text('2'), findsOneWidget);
    expect(find.text('3'), findsNothing);

    await pumpNav(tester, unread: 0);
    expect(find.byType(Badge), findsNothing);
    expect(tester.takeException(), isNull);
  });

  testWidgets(
    'badge remains visible on another tab and chat icon is tappable',
    (tester) async {
      int? tapped;
      await pumpNav(tester, unread: 7, position: 1, onTap: (i) => tapped = i);
      expect(find.text('7'), findsOneWidget);
      await tester.tap(find.byIcon(Icons.chat_bubble));
      expect(tapped, 0);
      expect(tester.takeException(), isNull);
    },
  );

  testWidgets('large count is compact in icons-only navigation', (
    tester,
  ) async {
    await pumpNav(tester, unread: 120, iconsOnly: true);
    expect(find.text('99+'), findsOneWidget);
    await pumpNav(tester, unread: 120);
    final badgeRight = tester.getRect(find.text('99+')).right;
    final chatLabel = find.text('Чаты');
    expect(badgeRight, lessThan(tester.getRect(chatLabel).left));
    expect(tester.takeException(), isNull);
  });
}