import { readFileSync } from 'fs';
import { join } from 'path';

const fileString = readFileSync(join(__dirname, "input"), 'utf-8');
var rows = fileString.split("\n");

rows = rows.map(val => {
  return val.trim();
});
rows = rows.filter(val => {
  return val.length > 0;
});

// Parse out the instruction into "micro-ops"

var cmds = [];

for (const row of rows) {
  const inst = row.split(" ");
  switch(inst[0]) {
    case "noop":
      cmds.push(inst);
      break;
    case "addx":
      cmds.push(["noop"]);
      cmds.push(inst);
      break;
  }
}

console.log(cmds);
console.log(cmds.length);

const breakpoints = [20, 60, 100, 140, 180, 220];

// Start the VM

var sums = [];

var reg_X = 1;
var crt_pos = 1;

for (var i = 0; i < cmds.length; i++) {
  const cmd = cmds[i];
  if (breakpoints.indexOf(i + 1) > -1) {
    sums.push(reg_X * (i + 1));
  }

  switch(cmd[0]) {
    case "noop":
      break;
    case "addx":
      reg_X += +cmd[1];
      break;
  }
  // Do TV drawing
  if (crt_pos > 40) {
    process.stdout.write("\n");
    crt_pos = 1;
  }
  if (crt_pos >= (reg_X - 1) && (crt_pos <= (reg_X + 1))) {
    //console.log("cursor: ", crt_pos, " reg ", reg_X, i, cmd);
    process.stdout.write("#");
  } else {
    //console.log("cursor: ", crt_pos, " reg ", reg_X, crt_pos > reg_X - 1, crt_pos < reg_X + 1, cmd);
    process.stdout.write(".");
  }

  crt_pos += 1;
}
process.stdout.write("\n");

console.log(sums.reduce((a, b) => {
  return a + b;
}));