02. Santa's Gifts

function santasGifts(input) {
    let commandNumbers = Number(input[0]);

    let houses = input[1].split(' ');

    let index = 0;

    for (let i = 2; i < commandNumbers + 2; i++) {
        let currentIndex = index;

        let command = input[i].split(' ');

        if (command[0] == "Forward" || command[0] == "Back") {
            let steps = Number(command[1]);
            currentIndex += (command[0] == "Forward" ? steps : -steps);
            if (currentIndex >= 0 && currentIndex < houses.length) {
                index = currentIndex;
                houses.splice(index, 1);
            }
        } else if (command[0] == "Gift") {
            currentIndex = Number(command[1]);
            if (currentIndex >= 0 && currentIndex < houses.length) {
                index = currentIndex;
                houses.splice(index, 0, command[2]);
            }
        } else if (command[0] == "Swap") {
            let index1 = houses.indexOf(command[1]),
                index2 = houses.indexOf(command[2]);

            if (index1 != -1 && index2 != -1) {
                let value = houses[index1];
                houses[index1] = houses[index2];
                houses[index2] = value;
            }
        }
    }

    console.log(`Position: ${index}`);

    if (houses.length > 0) {
        console.log(houses.join(", "));
    }
    return;
}