import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:pluriwave/l10n/gen/app_localizations.dart';
import 'package:pluriwave/tema/pluriwave_theme.dart';
import 'package:pluriwave/widgets/pluri_layout.dart';
import 'package:pluriwave/widgets/pluri_root_header.dart';

/// S1 (Tier 1 visual fidelity): the prototype draws no global `AppBar` —
/// each root instead owns a plain 56px title row inside its own content
/// (`t4`, e.g. Alarmas line 325 `height:56px`, Ajustes line 511, Explorar
/// line 641). [PluriRootHeader] is that row, shared by all 5 roots so the
/// sleep-timer action that used to live on `app.dart`'s single global
/// `AppBar` stays reachable from every tab.
void main() {
  Widget host(Widget child) {
    return MaterialApp(
      theme: PluriWaveTheme.dark(),
      locale: const Locale('en'),
      localizationsDelegates: AppLocalizations.localizationsDelegates,
      supportedLocales: AppLocalizations.supportedLocales,
      home: Scaffold(body: child),
    );
  }

  testWidgets('renders the given title and is exactly 56px tall', (
    tester,
  ) async {
    await tester.pumpWidget(
      host(PluriRootHeader(title: 'Settings', onSleepTimer: () {})),
    );

    expect(find.text('Settings'), findsOneWidget);
    expect(PluriRootHeader.height, 56);
    final size = tester.getSize(find.byType(PluriRootHeader));
    expect(size.height, 56);
  });

  testWidgets('S5: uses the title tier (20px) on the left, matching the '
      "prototype's own header padding (t4 e.g. Alarmas "
      '`padding:0 12px 0 20px`)', (tester) async {
    await tester.pumpWidget(
      host(PluriRootHeader(title: 'Settings', onSleepTimer: () {})),
    );

    final padding = tester.widget<Padding>(find.byType(Padding).first);
    final insets = padding.padding as EdgeInsets;
    expect(insets.left, PluriLayout.titleHorizontal);
    expect(insets.right, PluriLayout.rowHorizontal);
  });

  testWidgets('exposes a bedtime action that invokes onSleepTimer when '
      'tapped', (tester) async {
    var tapped = false;
    await tester.pumpWidget(
      host(PluriRootHeader(title: 'Alarms', onSleepTimer: () => tapped = true)),
    );

    expect(find.byIcon(Icons.bedtime_outlined), findsOneWidget);
    await tester.tap(find.byIcon(Icons.bedtime_outlined));
    await tester.pump();

    expect(tapped, isTrue);
  });

  testWidgets('never builds a Material AppBar', (tester) async {
    await tester.pumpWidget(
      host(PluriRootHeader(title: 'Search signal', onSleepTimer: () {})),
    );

    expect(find.byType(AppBar), findsNothing);
  });

  testWidgets('S2: renders optional actions BEFORE the bedtime button — a few '
      "roots' single functional action (e.g. Alarmas' create-alarm button, "
      "Buscar's filters entry point) that used to live on the now-retired "
      'PluriScreenHeader', (tester) async {
    await tester.pumpWidget(
      host(
        PluriRootHeader(
          title: 'Alarms',
          onSleepTimer: () {},
          actions: [
            IconButton(icon: const Icon(Icons.add_rounded), onPressed: () {}),
          ],
        ),
      ),
    );

    expect(find.byIcon(Icons.add_rounded), findsOneWidget);
    expect(find.byIcon(Icons.bedtime_outlined), findsOneWidget);

    final actionRect = tester.getRect(find.byIcon(Icons.add_rounded));
    final bedtimeRect = tester.getRect(find.byIcon(Icons.bedtime_outlined));
    expect(
      actionRect.left,
      lessThan(bedtimeRect.left),
      reason: 'actions render before (to the left of) the bedtime button',
    );
  });
}