package nl.tudelft.jpacman.level;

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

import com.google.common.collect.Lists;

import nl.tudelft.jpacman.board.Board;
import nl.tudelft.jpacman.board.BoardFactory;
import nl.tudelft.jpacman.board.Direction;
import nl.tudelft.jpacman.board.Square;
import nl.tudelft.jpacman.game.Game;
import nl.tudelft.jpacman.game.GameFactory;
import nl.tudelft.jpacman.npc.ghost.GhostFactory;
import nl.tudelft.jpacman.sprite.PacManSprites;

import static org.assertj.core.api.Assertions.assertThat;

/**
 * Test suite to confirm the correct behaviour of pellet consumtion as
 * described in Scenario S2.1.
 *
 * @author Michael Chen
 */
class PlayerTest {
    private MapParser parser;
    private GameFactory gameFact;

    /**
     * Prepare the game factory
     */
    @BeforeEach
    void setUpTest() {
        PacManSprites sprites = new PacManSprites();
        parser = new MapParser(new LevelFactory(sprites,
                new GhostFactory(sprites)), new BoardFactory(sprites));
        gameFact = new GameFactory(new PlayerFactory(sprites));
    }

    /**
     * Scenario S2.1: The player consumes
     */
    @Test
    void playerConsumeTest() {
        Level level = parser.parseMap(
            Lists.newArrayList("####", "#P.#", "####"));
        Board board = level.getBoard();
        Game game = gameFact.createSinglePlayerGame(level);
        Player player = game.getPlayers().get(0);
        Square playerStart =  board.squareAt(1, 1);
        Square pelletPos =  board.squareAt(2, 1);
        
        // Given the game has started,
        game.start();
        assertThat(game.isInProgress()).isTrue();
        assertThat(player.getScore()).isZero();
        
        // and  my Pacman is next to a square containing a pellet;
        assertThat(pelletPos.getOccupants())
            .hasAtLeastOneElementOfType(Pellet.class);
        assertThat(pelletPos.getOccupants()).hasSize(1);
        Pellet pellet = (Pellet) pelletPos.getOccupants().get(0);
        assertThat(playerStart.getOccupants()).contains(player);
        
        // When  I press an arrow key towards that square;
        game.move(player, Direction.EAST);
        
        // Then  my Pacman can move to that square,
        assertThat(pelletPos.getOccupants()).contains(player);
        
        // and  I earn the points for the pellet,
        assertThat(player.getScore()).isEqualTo(pellet.getValue());
        
        // and  the pellet disappears from that square.
        assertThat(pelletPos.getOccupants()).doesNotContain(pellet);
        
        game.stop();
    }
}