import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:integration_test/integration_test.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:rippr/main.dart' as app;
import 'package:rippr/src/app/providers.dart';

/// Drives a whole recording on a simulator that is genuinely *moving*.
///
/// Run `xcrun simctl location booted start --speed=15 <waypoints>` first. The iOS
/// simulator interpolates between waypoints over time, so the device genuinely moves —
/// but **CoreLocation still reports speed 0.0** throughout. Measured, not assumed: a
/// probe run captured 8 fixes, every one of them zero.
///
/// So position, distance, path shape and segment structure are all verifiable here.
/// Speed, moving time and speed colouring are not, on either platform.
///
/// The app is uninstalled when the run ends, taking its database with it, so anything
/// worth knowing is read back through the provider graph and printed from inside.
void main() {
  IntegrationTestWidgetsFlutterBinding.ensureInitialized();

  testWidgets('record a ride end to end through the UI', (tester) async {
    app.main();
    await tester.pumpAndSettle(const Duration(seconds: 5));

    await tester.tap(find.byKey(const Key('start')));
    await tester.pumpAndSettle(const Duration(seconds: 2));

    // Ride for a while, letting the flush timer land batches.
    for (var i = 0; i < 15; i++) {
      await tester.runAsync(
          () => Future<void>.delayed(const Duration(seconds: 1)));
      await tester.pump();
    }

    await tester.tap(find.byKey(const Key('stop')));
    await tester.pumpAndSettle(const Duration(seconds: 3));

    // Read the stored ride back through the real provider graph. The app is
    // uninstalled when the run ends, taking its database with it, so anything worth
    // knowing has to be reported from inside the test.
    final container = ProviderScope.containerOf(
      tester.element(find.byType(MaterialApp)),
      listen: false,
    );
    final repo = container.read(tripRepositoryProvider);
    final trips = await repo.watchCompletedTrips().first;

    debugPrint('RIPPR-PROBE completedTrips=${trips.length}');
    for (final t in trips) {
      final points = await repo.pointsForTrip(t.id);
      final segments = await repo.segmentsForTrip(t.id);
      final lats = [for (final p in points) p.latitude];
      debugPrint('RIPPR-PROBE trip=${t.id} points=${t.pointCount} '
          'distanceM=${t.distanceM.toStringAsFixed(1)} '
          'maxSpeedKmh=${t.maxSpeedKmh.toStringAsFixed(1)} '
          'movingMs=${t.movingMillis} segments=${segments.length}');
      if (lats.isNotEmpty) {
        debugPrint('RIPPR-PROBE latSpan=${(lats.reduce((a, b) => a > b ? a : b) - lats.reduce((a, b) => a < b ? a : b)).toStringAsFixed(5)}');
      }
    }

    // What CAN be proven locally: the ride persisted, moved, and is listed.
    expect(trips, isNotEmpty, reason: 'the ride was not saved');
    expect(trips.first.pointCount, greaterThan(0));
    expect(trips.first.distanceM, greaterThan(0),
        reason: 'the simulator moved, so distance must be non-zero');

    // Now the list, then the detail screen with its map.
    await tester.tap(find.text('Rides'));
    await tester.pumpAndSettle(const Duration(seconds: 2));
    expect(find.byType(Card), findsWidgets, reason: 'the ride should be listed');

    await tester.tap(find.byKey(Key('trip-${trips.first.id}')));
    await tester.pumpAndSettle(const Duration(seconds: 4));
    expect(find.text('DISTANCE'), findsOneWidget);
    debugPrint('RIPPR-PROBE detail screen rendered');

    // Hold here so an external `simctl io screenshot` can capture the detail screen and
    // its map. Tapping the iOS simulator is not scriptable, so this is how a visual
    // check gets taken at all.
    for (var i = 0; i < 14; i++) {
      await tester.runAsync(
          () => Future<void>.delayed(const Duration(seconds: 1)));
      await tester.pump();
    }
  });
}