import 'package:flutter_test/flutter_test.dart';

import 'package:dmc_app/domain/mission/drone_profile.dart';
import 'package:dmc_app/domain/mission/mission_warnings.dart';
import 'package:dmc_app/domain/mission/route_geometry.dart';
import 'package:dmc_app/domain/mission/terrain_math.dart';
import 'package:dmc_app/domain/waypoint/flat_waypoint_list.dart';

void main() {
  const waypoints = [
    Waypoint(lat: 0, lon: 0, altitudeM: 60, speedMs: 15, catchRadiusM: 60),
    Waypoint(lat: 0, lon: 0.01, altitudeM: 60, speedMs: 15, catchRadiusM: 60),
  ];
  final drone = DroneProfile.t1Ranger();
  const okGeometry = RouteGeometry(segments: [], vertexBad: [false, false], legClimbBad: [false]);

  group('computeMissionWarnings', () {
    test('keine Warnungen bei unauffaelliger Route', () {
      final warnings = computeMissionWarnings(
        waypoints: waypoints,
        routeGeometry: okGeometry,
        legWindBad: const [false],
        droneProfile: drone,
        totalDistanceM: 100,
        totalDurationSec: 60,
      );
      expect(warnings, isEmpty);
    });

    test('meldet eine Routen-Warnung bei vertexBad und verweist auf die Karte', () {
      const badGeometry = RouteGeometry(segments: [], vertexBad: [true, false], legClimbBad: [false]);
      final warnings = computeMissionWarnings(
        waypoints: waypoints,
        routeGeometry: badGeometry,
        legWindBad: const [false],
        droneProfile: drone,
        totalDistanceM: 100,
        totalDurationSec: 60,
      );
      expect(warnings, hasLength(1));
      expect(warnings.single.action, WarningAction.map);
    });

    test('meldet eine Wind-Warnung und verweist auf den Speed-Tab', () {
      final warnings = computeMissionWarnings(
        waypoints: waypoints,
        routeGeometry: okGeometry,
        legWindBad: const [true],
        droneProfile: drone,
        totalDistanceM: 100,
        totalDurationSec: 60,
      );
      expect(warnings.single.action, WarningAction.speed);
    });

    test('meldet eine Gelaende-Warnung bei zum routeKey passendem Profil und verweist auf den Altitude-Tab', () {
      final profile = TerrainProfile(routeKey: routeKeyForTerrain(waypoints), points: const [
        TerrainSamplePoint(distanceM: 0, elevationRelM: 55), // clearance 5 < 10
        TerrainSamplePoint(distanceM: 500, elevationRelM: 55),
      ]);
      final warnings = computeMissionWarnings(
        waypoints: waypoints,
        routeGeometry: okGeometry,
        legWindBad: const [false],
        droneProfile: drone,
        totalDistanceM: 100,
        totalDurationSec: 60,
        terrain: profile,
      );
      expect(warnings.single.action, WarningAction.altitude);
    });

    test('ignoriert ein Gelaendeprofil, dessen routeKey nicht mehr zur Route passt', () {
      const staleProfile = TerrainProfile(routeKey: 'stale', points: [
        TerrainSamplePoint(distanceM: 0, elevationRelM: 55),
      ]);
      final warnings = computeMissionWarnings(
        waypoints: waypoints,
        routeGeometry: okGeometry,
        legWindBad: const [false],
        droneProfile: drone,
        totalDistanceM: 100,
        totalDurationSec: 60,
        terrain: staleProfile,
      );
      expect(warnings, isEmpty);
    });

    test('meldet Reichweiten- und Ausdauer-Ueberschreitung, beide verweisen auf die Karte', () {
      final tightDrone = drone.copyWith(maxRangeM: 50, maxEnduranceMin: 0.5);
      final warnings = computeMissionWarnings(
        waypoints: waypoints,
        routeGeometry: okGeometry,
        legWindBad: const [false],
        droneProfile: tightDrone,
        totalDistanceM: 100,
        totalDurationSec: 60,
      );
      expect(warnings, hasLength(2));
      expect(warnings.every((w) => w.action == WarningAction.map), isTrue);
    });

    test('maxRangeM/maxEnduranceMin <= 0 bedeutet "kein Limit" und wird nie ueberschritten', () {
      final unlimitedDrone = drone.copyWith(maxRangeM: 0, maxEnduranceMin: 0);
      final warnings = computeMissionWarnings(
        waypoints: waypoints,
        routeGeometry: okGeometry,
        legWindBad: const [false],
        droneProfile: unlimitedDrone,
        totalDistanceM: 1000000,
        totalDurationSec: 1000000,
      );
      expect(warnings, isEmpty);
    });
  });
}