package ch.zhaw.pm2.racetrack;

import ch.zhaw.pm2.racetrack.strategy.UserMoveStrategy;
import org.junit.jupiter.api.*;

import java.io.File;

import static ch.zhaw.pm2.racetrack.Game.NO_WINNER;

class GameTest {
    private UserInterface userInterface;
    private Game game;
    private Track track;

    @Nested
    @DisplayName("Test correct Setup")
    class Setup {
        @BeforeEach
        void setup() {
            userInterface = new UserInterface("Test");
            game = new Game(userInterface);
            track = game.selectTrack(new File(".\\tracks\\challenge.txt"));
            game.selectMoveStrategy(track.getCar(0),new UserMoveStrategy(new UserInterface("Testing"),0, track.getCarId(0)));
            game.selectMoveStrategy(track.getCar(1),new UserMoveStrategy(new UserInterface("Testing"),1, track.getCarId(1)));

        }


        @Test
        void getCurrentCarIndex() {
            Assertions.assertEquals(0,game.getCurrentCarIndex());
            game.switchToNextActiveCar();
            Assertions.assertEquals(1,game.getCurrentCarIndex());
        }

        @Test
        void getCarId() {
            Assertions.assertEquals('a',game.getCarId(0));
            Assertions.assertEquals('b',game.getCarId(1));
        }

        @Test
        void getCarPosition() {
            Assertions.assertEquals(new PositionVector(24,22),game.getCarPosition(0));
            Assertions.assertEquals(new PositionVector(24,24),game.getCarPosition(1));
        }

        @Test
        void getCarVelocity() {
            Assertions.assertEquals(new PositionVector(0,0),game.getCarVelocity(0));
            Assertions.assertEquals(new PositionVector(0,0),game.getCarVelocity(1));
        }

        @Test
        void getWinner() {
            Assertions.assertEquals(NO_WINNER,game.getWinner());
        }

        @Test
        void onlyOneCarLeft() {
            Assertions.assertFalse(game.onlyOneCarLeft());
        }

        @Test
        void carsMoving() {
            Assertions.assertTrue(game.carsMoving());
        }
    }

    @Nested
    @DisplayName("Basic manipulation")
    class manipulation {
        @BeforeEach
        void setup() {
            userInterface = new UserInterface("Test");
            game = new Game(userInterface);
            track = game.selectTrack(new File(".\\tracks\\challenge.txt"));
            game.selectMoveStrategy(track.getCar(0),new UserMoveStrategy(new UserInterface("Testing"),0, track.getCarId(0)));
            game.selectMoveStrategy(track.getCar(1),new UserMoveStrategy(new UserInterface("Testing"),1, track.getCarId(1)));

        }

        @Test
        void carTurnCorrect() {
            try {
                game.doCarTurn(PositionVector.Direction.RIGHT);
                Assertions.assertEquals(new PositionVector(1,0),game.getCarVelocity(0));
            } catch (PositionVectorNotValid positionVectorNotValid) {
                positionVectorNotValid.printStackTrace();
            }
        }

        @Test
        void carCrash() {
            try {
                game.doCarTurn(PositionVector.Direction.UP);
                Assertions.assertTrue(game.onlyOneCarLeft());
            } catch (PositionVectorNotValid positionVectorNotValid) {
                positionVectorNotValid.printStackTrace();
            }
        }

    }
}