adventofcode2022_5

const fs = require('fs');
const path = require('path');

const data = fs.readFileSync(path.join(__dirname, './input4.txt'), 'utf8');
const rules = fs.readFileSync(path.join(__dirname, './input4_1.txt'), 'utf8');
const config = rules.split(/\r?\n/).map(item => item.split(' ')).map(item => ({
    from: Number(item[3]),
    count: Number(item[1]),
    to: Number(item[5])
}));

const createColumns = () => {
    const columns = [];

    data.split(/\r?\n/).forEach((item) => {
        const letters = item.split('');
        const lettersInCell = 3;
        const iterationsCount = Math.floor((item.length + 1) / (lettersInCell + 1));
    
        Array.from(Array(iterationsCount).keys()).forEach((index) => {
            const currentIndex = index * 4;
    
            const firstElem = letters[currentIndex];
            const secondElem = letters[currentIndex + 1];
            const thirdElem = letters[currentIndex + 2];
    
            const stringToInsert = `${firstElem}${secondElem}${thirdElem}`;
    
            if (!columns[index]) {
                columns[index] = [];
            }
    
            columns[index].push(stringToInsert);
        })
    });

    return columns.map(elem => elem.filter(item => item !== '   '));
}

const game = (partType) => {
    const columns = createColumns();

    // console.log(createColumns(), 'INPUT');

    Object.values(config).forEach(level => {
        const columnFrom = columns[level.from - 1];
        const columnTo = columns[level.to - 1];

        if (partType == 'first') {
            Array.from(Array(level.count).keys()).forEach(() => {
                columnTo.unshift(columnFrom?.splice(0, 1)[0]);
            })
        } else {
            Array.from(Array(level.count).keys()).forEach(() => {
                columns[level.to - 1].unshift(columns[level.from - 1]?.splice(0, 1)[0]);
            })
    
            columns[level.to - 1] = [...columns[level.to - 1].slice(0, level.count).reverse(), ...columns[level.to - 1].slice(level.count, columns[level.to - 1].length)];
        }
    });

    let result = '';
    
    columns.forEach(item => {
        result += item[0];
    })

    return result.replace(/\[/gi, '').replace(/\]/gi, '');
}

console.log(game('first'), game('second'), 'game');