package dev.llan.model.board.generation;

import dev.llan.model.board.Point;
import dev.llan.model.board.Tile;
import dev.llan.model.board.Tile.TileType;

import java.util.ArrayList;
import java.util.List;

import static dev.llan.model.board.generation.Constants.BASE_CLEARANCE_RADIUS;
import static dev.llan.model.board.generation.Constants.CLEARANCE_MULTIPLIER;

public class Room {
  public enum RoomType {
    START,
    END,
    ENEMY
  }

  private int rowRadius;
  private int colRadius;
  private Point center;

  private RoomType type;

  private double clearanceRadius;

  public Room(int rowRadius, int colRadius, Point position) {
    this.rowRadius = rowRadius;
    this.colRadius = colRadius;
    this.center = position;
    clearanceRadius = calculateRadius();
    type = RoomType.ENEMY;
  }

  public void setType(RoomType type) {
    this.type = type;
  }

  public RoomType getType() {
    return type;
  }

  public Point getCenter() {
    return center;
  }

  private double calculateRadius() {
    double diagonal = Math.sqrt(rowRadius * rowRadius + colRadius * colRadius) * CLEARANCE_MULTIPLIER;
    return diagonal / 2 + BASE_CLEARANCE_RADIUS;
  }

  public void removePointsWithinRadius(List<Point> points) {
    points.removeIf(point -> Point.getDistance(point, center) <= clearanceRadius);
  }

  public void placeTiles(Tile[][] map) {
    for (int row = -rowRadius; row <= rowRadius; row++) {
      for (int col = -colRadius; col <= colRadius; col++) {
        int mapRow = center.getRow() + row;
        int mapCol = center.getCol() + col;

        if (Math.abs(row) == rowRadius || Math.abs(col) == colRadius) {
          map[mapRow][mapCol] = new Tile(new Point(mapRow, mapCol), TileType.UNMOVABLE);
        } else {
          map[mapRow][mapCol] = new Tile(new Point(mapRow, mapCol), TileType.VACANT);
        }
      }
    }
  }

  public List<DirectedPoint> getConnectionPoints() {
    List<DirectedPoint> connectionPoints = new ArrayList<>();
    connectionPoints.add(new DirectedPoint(center.translate(-rowRadius, 0), Direction.UP));
    connectionPoints.add(new DirectedPoint(center.translate(rowRadius, 0), Direction.DOWN));
    connectionPoints.add(new DirectedPoint(center.translate(0, -colRadius), Direction.LEFT));
    connectionPoints.add(new DirectedPoint(center.translate(0, colRadius), Direction.RIGHT));

    return connectionPoints;
  }
}