import java.util.Random;


public class LayoutPopulator {

	public enum TileTypes{
		Ground('#'), Water('~'), House('H'), Boat('U');

		public final char icon;

		TileTypes(char icon){
			this.icon = icon;
		}


	}

	private Layout layout;
	private Random rand = new Random();

	LayoutPopulator(Layout layout){
		this.layout = layout;
		pWater(layout);
	}

	private void pWater(Layout layout){
		for(int i = 0; i < layout.getLayout().length; i++){
			int randInt = rand.nextInt(101);
			if(randInt == 0){
				if(!(i - 1 < 0 || i % layout.getX() == 0 || (i + 1) % layout.getX() == 0 || i + layout.getX() > layout.getLayout().length)){ //Prevents lake's source tile from spawning on an edge
					layout.getLayout()[i] = TileTypes.Water.icon;
					if(i + layout.getX() < layout.getLayout().length + 1){
						layout.getLayout()[i + layout.getX()] = TileTypes.Water.icon;
						layout.getLayout()[i + layout.getX() + 1] = TileTypes.Water.icon;
						layout.getLayout()[i + layout.getX() - 1] = TileTypes.Water.icon;
						if((i + layout.getX()) + layout.getX() < layout.getLayout().length + 1){
							layout.getLayout()[(i + layout.getX()) + layout.getX()] = TileTypes.Water.icon;
						}
						randInt = rand.nextInt(101);
						if(randInt < 40){
							layout.getLayout()[i - 1] = TileTypes.Water.icon;
						}
						if(i - layout.getX() > 0){
							layout.getLayout()[i - layout.getX()] = TileTypes.Water.icon;
							layout.getLayout()[i - layout.getX() + 1] = TileTypes.Water.icon;
							layout.getLayout()[i - layout.getX() - 1] = TileTypes.Water.icon;
							if((i - layout.getX()) - layout.getX() > 0){
								layout.getLayout()[(i - layout.getX()) - layout.getX()] = TileTypes.Water.icon;
							}
						}
					}
				}
			}
		}
		layout.stringRep(layout.getLayout());
		pGround(layout);
	}

	private void pGround(Layout layout){
		for(int i = 0; i < layout.getLayout().length; i++){
			if(layout.getLayout()[i] != TileTypes.Water.icon){
				layout.getLayout()[i] = TileTypes.Ground.icon;
			}
		}
		layout.stringRep(layout.getLayout());
		pHouse(layout);
	}

	private void pHouse(Layout layout){
		for(int i = 0; i < layout.getLayout().length; i++){
			int randInt = rand.nextInt(101);
			if(layout.getLayout()[i] == TileTypes.Ground.icon && randInt <= 2){
				layout.getLayout()[i] = TileTypes.House.icon;
			}
		}
		layout.stringRep(layout.getLayout());
		pBoat(layout);
	}

	private void pBoat(Layout layout){
		for(int i = 0; i < layout.getLayout().length; i++){
			if(layout.getLayout()[i] == TileTypes.Water.icon){
				if(i - 1 > 0 && i % layout.getX() != 0 && i + 1 < layout.getLayout().length && (i + 1) % layout.getX() != 0){
					if(layout.getLayout()[i + 1] == TileTypes.House.icon || layout.getLayout()[i - 1] == TileTypes.House.icon){
						layout.getLayout()[i] = TileTypes.Boat.icon;
					}
				}
				if(i - layout.getX() > 0 && i + layout.getX() < layout.getLayout().length){
					if(layout.getLayout()[i - layout.getX()] == TileTypes.House.icon || layout.getLayout()[i + layout.getX()] == TileTypes.House.icon){
						layout.getLayout()[i] = TileTypes.Boat.icon;
					}
				}
			}
		}
		layout.stringRep(layout.getLayout());
	}
}