03. Phone Shop

function phoneShop(input) {
    let phones = input.shift().split(', ');

    while (input[0] !== 'End') {
        let [command, phone] = input.shift().split(' - ');

        if (command === 'Add' && !phones.includes(phone)) {
            phones.push(phone);
        } else if (command === 'Remove' && phones.includes(phone)) {
            phones.splice(phones.indexOf(phone, 1));
        } else if (command === 'Bonus phone') {
            let [oldPhone, newPhone] = phone.split(':');
            if (phones.includes(oldPhone)) {
                phones.splice(phones.indexOf(oldPhone) + 1, 0, newPhone);
            }
        } else if (command === 'Last' && phones.includes(phone)) {
            phones.push(phone);
            phones.splice(phones.indexOf(phone), 1);
        }
    }

    console.log(phones.join(', '));
    return;
}