import java.util.Arrays;
import java.util.List;
import java.util.regex.Pattern;
import java.util.stream.Stream;

/**
 * @author /u/Philboyd_Studge on 12/5/2015.
 */
public class Advent6 {

    private static final String[] COMMANDS = {"toggle", "turn on", "turn off"};
    private static boolean part1 = false; // true for part 1

    public static int count(int[][] grid) {
        return Stream.of(grid)
                .flatMapToInt(Arrays::stream)
                .sum();
    }

    public static void process(String in, int[][] grid) {


        int cmd = 0;
        for (int i = 0; i < COMMANDS.length; i++) {
            if (in.startsWith(COMMANDS[i])) cmd = i;
        }
        // strip command from string
        in = in.substring(COMMANDS[cmd].length()+1);

        // split spaces and commas
        // and map integer location values to array
        int[] loc = Pattern.compile("[\\s,]+")
                .splitAsStream(in)
                .filter(x -> x.length() < 4)
                .mapToInt(Integer::parseInt)
                .toArray();

        for (int i = loc[0]; i <= loc[2]; i++) {
            for (int j = loc[1]; j <= loc[3]; j++) {
                switch (cmd) {
                    case 0:
                        if (part1) grid[i][j] ^= 1;
                        else grid[i][j] += 2;
                        break;
                    case 1:
                        if (part1) grid[i][j] = 1;
                        else grid[i][j] += 1;
                        break;
                    case 2:
                        if (part1) {
                            grid[i][j] = 0;
                        } else {
                            grid[i][j] -= 1;
                            if (grid[i][j] < 0) grid[i][j] = 0;
                        }
                        break;
                    }
                }
            }
        }



    public static void main(String[] args) {

        List<String> list = FileIO.getFileAsList("advent6.txt");

        int grid[][] = new int[1000][1000];

        for (String each : list) {
            process(each, grid);
        }

        int answer = count(grid);

        System.out.println("Answer: " + answer);

    }
}