import 'package:flutter/material.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:flutter_test/flutter_test.dart';

import 'package:miler/views/Dashboard/home/trip_empty_state.dart';

/// An unfilled trip tab used to render a bordered white card with a grey
/// glyph in it — a piece of content that had arrived empty. It is the page
/// itself now, so the assertion that matters is that no card comes back: a
/// `Container` with a `Border` around the whole state is the thing being
/// removed, and a redesign that quietly reintroduces one should fail here.
void main() {
  Future<void> pump(
    WidgetTester tester, {
    required bool offline,
    VoidCallback? onGoOnDuty,
  }) async {
    tester.view.physicalSize = const Size(1170, 2532);
    tester.view.devicePixelRatio = 3.0;
    addTearDown(tester.view.resetPhysicalSize);
    addTearDown(tester.view.resetDevicePixelRatio);

    await tester.pumpWidget(
      ScreenUtilInit(
        designSize: const Size(390, 844),
        builder: (_, _) => MaterialApp(
          home: Scaffold(
            body: TripEmptyState(
              tripLabel: 'Trip 2',
              offline: offline,
              onGoOnDuty: onGoOnDuty,
            ),
          ),
        ),
      ),
    );
    // Not `pumpAndSettle`: the halo breathes on a repeating controller, so
    // there is deliberately no steady state to settle into.
    await tester.pump(const Duration(milliseconds: 300));
  }

  /// Any decoration carrying a border, anywhere in the state.
  Finder borderedBoxes() => find.byWidgetPredicate((w) {
    if (w is! Container) return false;
    final d = w.decoration;
    return d is BoxDecoration && d.border != null;
  });

  testWidgets('names the trip the tabs name, and draws no card', (
    tester,
  ) async {
    await pump(tester, offline: false);

    expect(find.text('Trip 2 not assigned yet'), findsOneWidget);
    expect(borderedBoxes(), findsNothing);
  });

  testWidgets('says the app is still waiting rather than offering nothing', (
    tester,
  ) async {
    await pump(tester, offline: false);
    expect(find.text('Waiting for your hub'), findsOneWidget);
  });

  testWidgets('off duty is a different sentence with the action that fixes it', (
    tester,
  ) async {
    var tapped = false;
    await pump(tester, offline: true, onGoOnDuty: () => tapped = true);

    expect(find.text('You are off duty'), findsOneWidget);
    // Nothing is coming until he goes on duty, so the wait is not claimed.
    expect(find.text('Waiting for your hub'), findsNothing);

    await tester.tap(find.text('Go on duty'));
    await tester.pump();
    expect(tapped, isTrue);
  });
}