import { promises as fsPromises } from "node:fs";

async function asyncReadFile(filename) {
    try {
        const contents = await fsPromises.readFile(filename, "utf-8");

        const arr = contents.split(/\r?\n/);

        return arr;
    } catch (err) {
        console.error(err);
    }
}

/*
const data = `
123 328  51 64 
 45 64  387 23 
  6 98  215 314
*   +   *   +  
`.trim()
.split("\n");
*/

const data = await asyncReadFile("../input.txt");

const parsedData = data.map((val) => val.trim().split(/\s+/));
const rowCount = parsedData.length,
    colCount = rowCount ? parsedData[0].length : 0;
const numRegex = /\d+/;

let total = 0;

for (let c = 0; c < colCount; c++) {
    let operands = [];
    let result = 0;
    for (let r = 0; r < rowCount; r++) {
        const val = parsedData[r][c];
        if (numRegex.test(val)) operands.push(val * 1);
        else if (val === "+")
            result = operands.reduce((acc, curr) => acc + curr, 0);
        else if (val === "*")
            result = operands.reduce((acc, curr) => acc * curr, 1);
    }
    console.log(`> result: ${result}`);
    total += result;
}

console.log(`>> total: ${total}`);