import 'dart:convert';

import 'package:flutter_test/flutter_test.dart';
import 'package:rippr/src/domain/models.dart';
import 'package:rippr/src/telemetry/telemetry.dart';

/// Ported from `com.rippr.TelemetryTest`.
///
/// Tolerances are carried over as-is. Note the speed assertions: Kotlin's `Float`
/// widened to `Double` yields 88.5 only within 1e-4, which is exactly why the original
/// used that tolerance. Dart's uniform binary64 is exact here, but the tolerance is kept
/// so the two suites stay comparable line for line.
void main() {
  test('converts meters per second to kmh', () {
    expect(msToKmh(10), closeTo(36, 0.001));
    expect(msToKmh(0), closeTo(0, 0.001));
  });

  test('gps jitter below the noise floor reports as zero', () {
    expect(sanitizeSpeedKmh(0.9), closeTo(0, 0.001));
    expect(sanitizeSpeedKmh(double.nan), closeTo(0, 0.001));
    expect(sanitizeSpeedKmh(-5), closeTo(0, 0.001));
  });

  test('real speeds pass through untouched', () {
    expect(sanitizeSpeedKmh(97.3), closeTo(97.3, 0.001));
  });

  test('rejects fixes worse than the accuracy budget', () {
    expect(isUsableFix(12), isTrue);
    expect(isUsableFix(0), isTrue,
        reason: 'unknown accuracy must not be discarded');
    expect(isUsableFix(120), isFalse);
  });

  test('formats duration as hh mm ss', () {
    expect(formatDuration(0), '00:00:00');
    expect(formatDuration(-1), '00:00:00');
    expect(formatDuration(65000), '00:01:05');
    expect(formatDuration(7384000), '02:03:04');
  });

  test('encodes a batch as the documented payload shape', () {
    final points = [
      const TrackPoint(
        id: 7,
        tripId: 3,
        segmentId: 5,
        timestamp: 1700000000000,
        latitude: 51.0447,
        longitude: -114.0719,
        speedKmh: 88.5,
        altitudeM: 1045.0,
        accuracyM: 4.2,
        bearingDeg: 271.5,
      ),
    ];

    final json =
        jsonDecode(encodeBatch('device-abc', points)) as Map<String, dynamic>;

    expect(json['device_id'], 'device-abc');
    final first = (json['points'] as List).first as Map<String, dynamic>;
    expect(first['id'], 7);
    expect(first['trip_id'], 3);
    expect(first['segment_id'], 5);
    expect(first['ts'], 1700000000000);
    expect(first['lat'] as double, closeTo(51.0447, 1e-6));
    expect(first['lon'] as double, closeTo(-114.0719, 1e-6));
    expect(first['speed_kmh'] as double, closeTo(88.5, 1e-4));
  });

  test('a batch spanning two segments labels each point individually', () {
    // A batch is drawn by id and can cross a boundary, so identity must travel with
    // the point rather than the batch.
    final points = [
      const TrackPoint(
          id: 1,
          tripId: 3,
          segmentId: 5,
          timestamp: 1,
          latitude: 51.0,
          longitude: -114.0,
          speedKmh: 40,
          altitudeM: 1000.0),
      const TrackPoint(
          id: 2,
          tripId: 3,
          segmentId: 6,
          timestamp: 2,
          latitude: 51.1,
          longitude: -114.0,
          speedKmh: 40,
          altitudeM: 1000.0),
    ];

    final array =
        (jsonDecode(encodeBatch('d', points)) as Map<String, dynamic>)['points']
            as List;

    expect((array[0] as Map)['segment_id'], 5);
    expect((array[1] as Map)['segment_id'], 6);
    expect((array[0] as Map)['trip_id'], 3);
  });

  test('encodes an empty batch without failing', () {
    final json =
        jsonDecode(encodeBatch('d', const [])) as Map<String, dynamic>;
    expect((json['points'] as List).length, 0);
  });
}