const fs = require("fs");

function part1() {
  const bag = { red: 12, green: 13, blue: 14 };
  const isValid = (colour) => {
    let flag = true;
    Object.keys(bag).forEach((key) => {
      if (colour.endsWith(key) && Number(colour.replace(key, "")) > bag[key])
        flag = false;
    });
    return flag;
  };
  let total = 0;
  fs.readFileSync("./input.txt")
    .toString()
    .split("\n")
    .forEach((line) => {
      line = line.replaceAll(/\s+/g, "").slice(4).split(":");
      let id = Number(line[0]);
      let validFlag = true;
      line[1].split(";").forEach((game) => {
        game.split(",").forEach((colour) => {
          if (!isValid(colour)) {
            validFlag = false;
            return;
          }
        });
        if (!validFlag) return;
      });
      total += validFlag ? id : 0;
    });
  console.log(`Part 1: ${total}`);
}

function part2() {
  let sum = 0;
  fs.readFileSync("./input.txt")
    .toString()
    .split("\n")
    .forEach((line) => {
      const minColours = { red: 0, green: 0, blue: 0 };
      line
        .replaceAll(/\s+/g, "")
        .split(":")[1]
        .split(";")
        .forEach((game) => {
          game.split(",").forEach((colour) => {
            const [colourMatched, amount] = [
              colour.match(/[a-z]+/g)[0],
              Number(colour.match(/[0-9]+/g)[0]),
            ];
            if (minColours[colourMatched] < amount)
              minColours[colourMatched] = amount;
          });
        });
      sum += Object.values(minColours).reduce((acc, curr) => acc * curr);
    });
  console.log(`Part 2: ${sum}`);
}

part1();
part2();