import 'dart:typed_data';

import 'package:flutter_test/flutter_test.dart';
import 'package:halkyon_ui/halkyon_ui.dart';
import 'package:material_ui/material_ui.dart';

import '../support/test_app.dart';

/// A transparent PNG of one pixel, standing in for an app's kingfisher.
final _emblem = MemoryImage(
  Uint8List.fromList(const [
    0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A, 0x00, 0x00, 0x00, 0x0D, //
    0x49, 0x48, 0x44, 0x52, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01,
    0x08, 0x06, 0x00, 0x00, 0x00, 0x1F, 0x15, 0xC4, 0x89, 0x00, 0x00, 0x00,
    0x0D, 0x49, 0x44, 0x41, 0x54, 0x78, 0x9C, 0x63, 0x00, 0x01, 0x00, 0x00,
    0x05, 0x00, 0x01, 0x0D, 0x0A, 0x2D, 0xB4, 0x00, 0x00, 0x00, 0x00, 0x49,
    0x45, 0x4E, 0x44, 0xAE, 0x42, 0x60, 0x82,
  ]),
);

void main() {
  testWidgets("shows the kingfisher in the app's colours as it is, and "
      "\"Halkyon\" over the app's word, read out as the app's name", (
    tester,
  ) async {
    await tester.pumpWidget(
      testApp(
        LaunchScreen(emblem: _emblem, product: 'Todo', name: 'Halkyon Todo'),
      ),
    );

    // The bird on the screen itself (ADR 0031, D11), not a rounded tile.
    expect(find.byType(Image), findsOneWidget);
    expect(
      find.ancestor(of: find.byType(Image), matching: find.byType(ClipRRect)),
      findsNothing,
    );
    expect(
      tester.getSize(find.byType(Image)),
      const Size.square(LaunchScreen.emblemSize),
    );
    final brand = tester.getRect(find.text('Halkyon'));
    final product = tester.getRect(find.text('Todo'));
    expect(product.top, greaterThanOrEqualTo(brand.bottom - 1));
    expect(product.center.dx, moreOrLessEquals(brand.center.dx));
    expect(find.bySemanticsLabel('Halkyon Todo'), findsOneWidget);
  });

  testWidgets('the wordmark is cobalt over copper, and silent to screen '
      'readers', (tester) async {
    await tester.pumpWidget(
      testApp(const Scaffold(body: BrandWordmark(product: 'Train'))),
    );

    final scheme = appTheme(Brightness.light).colorScheme;
    expect(
      tester.widget<Text>(find.text('Halkyon')).style?.color,
      scheme.primary,
    );
    expect(
      tester.widget<Text>(find.text('Train')).style?.color,
      scheme.tertiary,
    );
    expect(find.bySemanticsLabel('Train'), findsNothing);
  });
}