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

import 'package:fuel_tax_tracker/widgets/image_source_sheet.dart';

/// Covers the optional [heading] and [onInfoTap] on [chooseImageSource]'s
/// bottom sheet — receipt capture passes "Receipt From" with no info
/// button (see receipt_capture.dart); VIN scanning passes "VIN From" plus
/// an info button that explains where to find one (see
/// add_edit_vehicle_screen.dart).
void main() {
  Future<void> pumpSheet(
    WidgetTester tester, {
    String? heading,
    VoidCallback? onInfoTap,
  }) async {
    await tester.pumpWidget(
      MaterialApp(
        home: Builder(
          builder: (context) => ElevatedButton(
            onPressed: () => chooseImageSource(context, heading: heading, onInfoTap: onInfoTap),
            child: const Text('Open'),
          ),
        ),
      ),
    );
    await tester.tap(find.text('Open'));
    await tester.pumpAndSettle();
  }

  testWidgets('shows the heading above Take Photo / Choose from Gallery when provided',
      (tester) async {
    await pumpSheet(tester, heading: 'Receipt From');

    expect(find.text('Receipt From'), findsOneWidget);
    expect(find.text('Take Photo'), findsOneWidget);
    expect(find.text('Choose from Gallery'), findsOneWidget);
  });

  testWidgets('shows no heading when none is provided', (tester) async {
    await pumpSheet(tester);

    expect(find.text('Receipt From'), findsNothing);
    expect(find.text('Take Photo'), findsOneWidget);
    expect(find.text('Choose from Gallery'), findsOneWidget);
  });

  testWidgets('shows no info button when onInfoTap is omitted, even with a heading',
      (tester) async {
    await pumpSheet(tester, heading: 'Receipt From');

    expect(find.byIcon(Icons.info_outline), findsNothing);
  });

  testWidgets('shows an info button next to the heading when onInfoTap is provided, and invokes it',
      (tester) async {
    var tapped = false;
    await pumpSheet(tester, heading: 'VIN From', onInfoTap: () => tapped = true);

    expect(find.text('VIN From'), findsOneWidget);
    expect(find.byIcon(Icons.info_outline), findsOneWidget);

    await tester.tap(find.byIcon(Icons.info_outline));
    await tester.pumpAndSettle();

    expect(tapped, isTrue);
  });
}