const fs = require('fs');

const input = fs.readFileSync(__dirname + '/input.txt', 'utf8');

interface Coord {
    x: number,
    y: number,
}

interface Bot {
    pos: Coord,
    vel: Coord,
}

const bots: Array<Bot> = [];

input.split("\n").forEach((line: string) => {
    const matches = line.match(/p=(-?\d+),(-?\d+) v=(-?\d+),(-?\d+)/);
    if (!matches) {
        return;
    }
    bots.push({
        pos: { x: parseInt(matches[1]), y: parseInt(matches[2]) },
        vel: { x: parseInt(matches[3]), y: parseInt(matches[4]) },
    });
});

const width = 101;
const height = 103;

let seconds = 0;

function printBots() {
    const botRows: Array<Array<string>> = [];
    for (let y = 0; y < height; y++) {
        botRows[y] = [];
        for (let x = 0; x < width; x++) {
            botRows[y][x] = ' ';
        }
    }

    bots.forEach((bot) => {
        botRows[bot.pos.y][bot.pos.x] = '.';
    });

    console.log(botRows.map((r) => r.join('')).join("\n"));
    console.log(seconds);
}
printBots();

function sleep() {
    const promise: Promise<void> = new Promise((resolve) => {
        setTimeout(() => resolve(), 100);
    });
    return promise;
}

async function go() {
    while (true) {
        seconds++;
        bots.forEach((bot) => {
            let newX = (bot.pos.x + (bot.vel.x)) % width;
            if (newX < 0) {
                newX = width + newX;
            }
            bot.pos.x = newX;
            let newY = (bot.pos.y + (bot.vel.y)) % height;
            if (newY < 0) {
                newY = height + newY;
            }
            bot.pos.y = newY;
        });
        if ((seconds - 72) % 103 === 0) {
            printBots();
            await sleep();
        }
    }
}

go();