package ca.utoronto.utm.othello.model;

public class PlayerStrategic extends Player {

	public PlayerStrategic(Othello othello, char player) {
		super(othello, player);
	}

	@Override
	public Move getMove() {

		PlayerGreedy greedyPlayer = new PlayerGreedy(this.othello, this.player);
		Move cornerMove = this.getCornerMove();
		Move sideMove = this.getSideMove();
		Move greedyMove = greedyPlayer.getMove();

		if (cornerMove != new Move(-1, -1)) {
			return cornerMove;
		}

		else if (sideMove != new Move(-1, -1)) {
			return sideMove;
		}

		else {
			return greedyMove;
		}
	}

	public Move getCornerMove() {

		Othello othelloCopy = othello.copy();
		//Used as an othello.board index
		int boardDim = Othello.DIMENSION - 1;
		int bestMoveCount = othelloCopy.getCount(this.player);

		Move bestMove = new Move(-1, -1);
		Move topLeft = new Move(0, 0);
		Move topRight = new Move(0, boardDim);
		Move bottomLeft = new Move(boardDim, 0);
		Move bottomRight = new Move(boardDim, boardDim);


		if (othelloCopy.move(topLeft.getRow(), topLeft.getCol()) &&
				othelloCopy.getCount(this.player)>bestMoveCount) {
			bestMoveCount = othelloCopy.getCount(this.player);
			bestMove = new Move(topLeft.getRow(), topLeft.getCol());
		}

		if (othelloCopy.move(topRight.getRow(), topRight.getCol()) &&
				othelloCopy.getCount(this.player)>bestMoveCount) {
			bestMoveCount = othelloCopy.getCount(this.player);
			bestMove = new Move(topRight.getRow(), topRight.getCol());
		}

		if (othelloCopy.move(bottomLeft.getRow(), bottomLeft.getCol()) &&
				othelloCopy.getCount(this.player)>bestMoveCount) {
			bestMoveCount = othelloCopy.getCount(this.player);
			bestMove = new Move(bottomLeft.getRow(), bottomLeft.getCol());
		}

		if (othelloCopy.move(topRight.getRow(), topRight.getCol()) &&
				othelloCopy.getCount(this.player)>bestMoveCount) {
			bestMoveCount = othelloCopy.getCount(this.player);
			bestMove = new Move(bottomRight.getRow(), bottomRight.getCol());
		}

		return bestMove;
	}

	//excludes corners intentionally, since corner move does that
	public Move getSideMove() {

		int boardDim = Othello.DIMENSION -1;
		Othello othelloCopy = othello.copy();
		Move bestMove = new Move(-1, -1);
		int bestMoveCount = othelloCopy.getCount(this.player);

		//check left wall
		for (int row = 1; row < boardDim - 1; row++) {
			othelloCopy = othello.copy();
			if(othelloCopy.move(row, 0) && othelloCopy.getCount(this.player)>bestMoveCount) {
				bestMoveCount = othelloCopy.getCount(this.player);
				bestMove = new Move(row, 0);
			}
		}

		//check upper wall
		for (int col = 1; col < boardDim - 1; col++) {
			othelloCopy = othello.copy();
			if(othelloCopy.move(0, col) && othelloCopy.getCount(this.player)>bestMoveCount) {
				bestMoveCount = othelloCopy.getCount(this.player);
				bestMove = new Move(0, col);
			}
		}

		//check right wall
		for (int row = 1; row < boardDim - 1; row++) {
			othelloCopy = othello.copy();
			if(othelloCopy.move(row, boardDim) && othelloCopy.getCount(this.player)>bestMoveCount) {
				bestMoveCount = othelloCopy.getCount(this.player);
				bestMove = new Move(row, boardDim);
			}
		}

		//check bottom wall
		for (int col = 1; col < boardDim - 1; col++) {
			othelloCopy = othello.copy();
			if(othelloCopy.move(boardDim, col) && othelloCopy.getCount(this.player)>bestMoveCount) {
				bestMoveCount = othelloCopy.getCount(this.player);
				bestMove = new Move(boardDim, col);
			}
		}

		return bestMove;
	}

}