import fs from "node:fs";

const input = fs.readFileSync("inputs/day3").toString();


function puzzle1() {
    const mul_regex = /mul\(([0-9]{1,3}),([0-9]{1,3})\)/g;
    let sum = 0;
    let match: RegExpExecArray | null = null;
    while ((match = mul_regex.exec(input)) !== null) {
        sum += +match[1] * + +match[2];
    }
    return sum;
}

console.log("Puzzle 1", puzzle1());

function puzzle2() {
    const toggle_regex = /(?:do|don't)\(\)|mul\(([0-9]{1,3}),([0-9]{1,3})\)/g;
    let enabled = true;
    let sum = 0;
    let match: RegExpExecArray | null = null;
    while ((match = toggle_regex.exec(input)) !== null) {
        switch (match[0]) {
            case "do()":
                enabled = true;
                break;
            case "don't()":
                enabled = false;
                break;
            default:
                if (!enabled) break;
                sum += +match[1] * + +match[2];
                break;
        }
    }
    return sum;
}

console.log("Puzzle 2", puzzle2());