const fs = require('fs');


//console.log(macierz1.toString());
//console.log(macierz2.toString());

function convertToArray(string) {
    let data = [];

    let lines = string.split("\r\n");
    for (let i = 0; i < lines.length; i++) {
        let line = lines[i].split(" ");

        let dataline = [];
        for (let k = 0; k < line.length; k++) {
            dataline[k]=parseInt(line[k]);
        }
        data[i] = dataline;
    }

    return data;
}
function printArray(matrix) {
    for (let i = 0; i < matrix.length; i++) {
        for (let k = 0; k < matrix[i].length; k++) {
            let abc = matrix[i][k];
            console.log(abc);
        }
    }
}
function multiply(macierz1, macierz2) {
    if (!Array.isArray(macierz1) || !Array.isArray(macierz2) || !macierz1.length || !macierz2.length) {
        console.log('Argumenty powinny być w formacie dwuwymiarowym');
    }

    let x = macierz1.length,
        z = macierz1[0].length,
        y = macierz2[0].length;

    if (macierz2.length !== z) {
        console.log('Liczba kolumn w pierwszej macierzy powinna być taka sama jak liczba wierszy w drugiej');
    }

    let productRow = Array.apply(null, new Array(y)).map(Number.prototype.valueOf, 0);
    let product = new Array(x);
    for (let p = 0; p < x; p++) {
        product[p] = productRow.slice();
    }
    for (let i = 0; i < x; i++) {
        for (let j = 0; j < y; j++) {
            for (let k = 0; k < z; k++) {
                product[i][j] += macierz1[i][k] * macierz2[k][j];
            }
        }
    }

    return product;


}

function convertToString(matrix) {
    let String = '';
    for (let i = 0; i < matrix.length; i++) {
        for (let k = 0; k < matrix[i].length; k++) {
            let abc = matrix[i][k];
            String += ' ' + abc;
        }
        String += "\n";
    }
    return String;
}

let macierz1 = fs.readFileSync(__dirname + "/macierz1.txt");
let macierz2 = fs.readFileSync(__dirname + "/macierz2.txt");

//console.log('macierz1:');
let m1 = convertToArray(macierz1.toString());
//printArray(m1);

//console.log('macierz2:');
let m2 = convertToArray(macierz2.toString());
//printArray(m2);

let mProduct = multiply(m1,m2);
//printArray(mProduct);

let macierzPlik = convertToString(mProduct);

fs.writeFile("WynikTekstu.txt",macierzPlik,function (error){});