import 'package:flutter_test/flutter_test.dart';
import 'package:halkyon_learn_flutter/src/app/person_app.dart';
import 'package:halkyon_learn_flutter/src/core/dependencies/dependencies.dart';
import 'package:halkyon_learn_flutter/src/core/dependencies/dependencies_scope.dart';
import 'package:halkyon_learn_flutter/src/core/router/route_paths.dart';
import 'package:halkyon_learn_flutter/src/feature/auth/widget/session_gate.dart';
import 'package:halkyon_learn_flutter/src/feature/studyset/bloc/content_tab_cubit.dart';
import 'package:halkyon_learn_flutter/src/feature/studyset/widget/studyset_parts.dart';
import 'package:material_ui/material_ui.dart';

/// Pumps the whole app as a person starts it, on [dependencies] (usually
/// `testDependencies(...)`): signed in, anonymously unless the auth fake says
/// otherwise, and opened at [location]. Settles, so that the person's data is
/// open and the first screen shows; the app's spinner animates without end,
/// so settling needs the fakes to have answered.
///
/// Every person's app opens at [location], also after a change of person.
Future<void> pumpApp(
  WidgetTester tester,
  Dependencies dependencies, {
  String location = RoutePaths.home,
}) async {
  await tester.pumpWidget(
    DependenciesScope(
      dependencies: dependencies,
      child: SessionGate(
        app: (person) => PersonApp(person: person, initialLocation: location),
      ),
    ),
  );
  await tester.pumpAndSettle();
}

/// The tab labelled [label] in the app's navigation, rail or bar. Its label
/// alone could also be a screen's title.
Finder tab(String label) => find.descendant(
  of: find.byWidgetPredicate(
    (widget) => widget is NavigationRail || widget is NavigationBar,
  ),
  matching: find.text(label),
);

/// Chooses the tab labelled [label] and settles.
Future<void> openTab(WidgetTester tester, String label) async {
  await tester.tap(tab(label));
  await tester.pumpAndSettle();
}

/// The part of the studyset screen shown.
StudysetPart shownPart(WidgetTester tester) =>
    tester.widget<StudysetPartSwitch>(find.byType(StudysetPartSwitch)).current;

/// Shows the studyset screen's part [label] ("Material", "Study plan") and
/// settles.
Future<void> openPart(WidgetTester tester, String label) async {
  await tester.tap(
    find.descendant(
      of: find.byType(StudysetPartSwitch),
      matching: find.text(label),
    ),
  );
  await tester.pumpAndSettle();
}