// In-place help widgets + the satellite dialog that consumes them.
// The pattern (usertest): explain a surface where it happens —
// an intro strip saying what this is and what will happen, plus a
// per-field "?" for the details.

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

import 'package:chain_studio/l10n/app_localizations.dart';
import 'package:chain_studio/pages/federation.dart';
import 'package:chain_studio/widgets/chain_field_help.dart';

import 'support/fake_hub.dart';

Widget _host(Widget child) => MaterialApp(
  localizationsDelegates: AppLocalizations.localizationsDelegates,
  supportedLocales: AppLocalizations.supportedLocales,
  locale: const Locale('de'),
  home: Scaffold(body: child),
);

void main() {
  testWidgets('ChainInlineHelp shows the text and fires Learn more', (
    tester,
  ) async {
    var learned = false;
    await tester.pumpWidget(
      _host(
        ChainInlineHelp(
          text: 'Ein Satellit ist ein weiterer Hub.',
          onLearnMore: () => learned = true,
          learnMoreLabel: 'Mehr erfahren',
        ),
      ),
    );
    expect(find.text('Ein Satellit ist ein weiterer Hub.'), findsOneWidget);
    await tester.tap(find.text('Mehr erfahren'));
    expect(learned, isTrue);
  });

  testWidgets('ChainInlineHelp hides Learn more when no callback', (
    tester,
  ) async {
    await tester.pumpWidget(
      _host(const ChainInlineHelp(text: 'Nur Text, kein Link.')),
    );
    expect(find.text('Nur Text, kein Link.'), findsOneWidget);
    expect(find.byIcon(Icons.arrow_forward), findsNothing);
  });

  testWidgets('ChainFieldHelp tap reveals the tooltip message', (tester) async {
    await tester.pumpWidget(
      _host(
        const ChainFieldLabel(
          label: 'Satelliten-Name',
          help: 'Frei wählbarer Anzeigename.',
        ),
      ),
    );
    // The help text is not shown until the affordance is used.
    expect(find.text('Frei wählbarer Anzeigename.'), findsNothing);
    await tester.tap(find.byIcon(Icons.help_outline));
    await tester.pump(const Duration(milliseconds: 400));
    expect(find.text('Frei wählbarer Anzeigename.'), findsOneWidget);
  });

  testWidgets('Add-satellite dialog explains what a satellite is', (
    tester,
  ) async {
    SharedPreferences.setMockInitialValues({});
    installFakeHub();
    await tester.pumpWidget(_host(const FederationPage()));
    await tester.pump(const Duration(milliseconds: 200));

    // Open the add flow via the AppBar action (the label also
    // appears in the empty-state CTA; either opens the dialog).
    await tester.tap(find.text('Satellit hinzufügen').first);
    await tester.pumpAndSettle();

    // The intro strip + its Learn-more link are present BEFORE any
    // input is asked for — no more bare "name" field.
    expect(find.textContaining('Ein Satellit ist ein weiterer Hub'),
        findsOneWidget);
    expect(find.text('Mehr erfahren'), findsOneWidget);
    // Field-level "?" is wired too.
    expect(find.byType(ChainFieldHelp), findsWidgets);
  });
}