package praktikum05;

import java.util.Random;

public class SnakeBot extends Bot{

    public SnakeBot(String[] args) {
        super(args);
    }

    @Override
    protected char nextMove(View view) throws Exception {

        char[][] grid = parseView(view);

        if (containsSymbol(grid, '@')) {
            return moveTowardsSymbol(grid, '@');
        }


        if (containsSymbol(grid, '*')) {
            return moveTowardsSymbol(grid, '*');
        }

        return performRandomMove();
    }

    char[][] parseView(View view) {
        char[][] grid = new char[view.width][view.width];

        int index = 0;
        for (int i = 0; i < view.width; i++) {
            for (int j = 0; j < view.width; j++) {
                grid[i][j] = view.data.charAt(index++);
            }
        }

        return grid;
    }

    private boolean containsSymbol(char[][] grid, char symbol) {
        for (char[] row : grid) {
            for (char cell : row) {
                if (cell == symbol) {
                    return true;
                }
            }
        }
        return false;
    }

    private char moveTowardsSymbol(char[][] grid, char symbol) throws Exception {

        return performRandomMove();
    }

    private char performRandomMove() throws Exception {
        Random random = new Random();
        int move = random.nextInt(4);

             return switch (move) {
                 case 0 -> '^';
                 case 1 -> 'v';
                 case 2 -> '<';
                 case 3 -> '>';
                 default -> throw new Exception("Ungültiger Zug");
             };
         }


    public static void main(String[] args) {
        Bot bot = new SnakeBot(args);
        bot.run();
    }
}