imitation game

// 01. The Imitation Game!!!
function solve(input) {

    let message = input.shift().split('');

    for (let key of input) {
        let line = key.split('|');

        if (line[0] === "Move") {
            let numbersOfLetters = Number(line[1]);
            let copySymbol = message.slice(0, numbersOfLetters);
            message.splice(0, numbersOfLetters);

            for (let x in copySymbol) {
                let symbolPush = copySymbol[x]
                message.push(symbolPush);
            }

        } else if (line[0] === 'ChangeAll') {
            message = message.map(x => x.replace(line[1], line[2]));

        } else if (line[0] === 'Insert') {
            let index = Number(line[1]);
            let value = line[2];
            message.splice(index, 0, value);

        } else if (line[0] === 'Decode') {
            console.log(`The decrypted message is: ${message.join('')}`);
        }
    }
}
solve(['zzHe', 'ChangeAll|z|l', 'Insert|2|o', 'Move|3', 'Decode']);
solve(['owyouh', 'Move|2', 'Move|3', 'Insert|3|are', 'Insert|9|?', 'Decode']);