import _ from 'lodash';
import Tile, { Feature, Direction } from '../Tile/Tile';
import TileOnBoard, { Attachment } from '../Tile/TileOnBoard';

const { Road, Town, Grass } = Feature;
const { North, East, South, West } = Direction;

export default class Board {
  tiles: TileOnBoard[];

  constructor(tiles?: TileOnBoard[]) {
    if (tiles) this.tiles = tiles;
    else this.tiles = [new TileOnBoard(Road, [Town, Road, Grass, Road])]
  }

  print() {
    this.tiles.forEach(tile => tile.print());
  }

  getAttachments(tile: Tile): Attachment[] {
    return _.flatten(this.tiles.map(attachTo => attachTo.getAttachments(tile)));
  }

  attach(attachment: Attachment) {
    const { tile, attachTo, side } = attachment;

    const xIncrement = {
      [East]: 1,
      [West]: -1,
    };

    const yIncrement = {
      [North]: 1,
      [South]: -1,
    };

    const tileOnBoard = new TileOnBoard(
      tile.center,
      tile.sides,
      tile.shield,
      {
        x: attachTo.position.x + (xIncrement[side] || 0),
        y: attachTo.position.y + (yIncrement[side] || 0),
      },
    );

    this.tiles.push(tileOnBoard);
  }

  getLegalMoves(tile: Tile) {
    const attachments = this.getAttachments(tile);
    console.log(attachments);
  }
}