01. The Imitation Game

function theImitacionGame(input) {
    let message = input.shift();

    while (input[0] != "Decode") {
        let tokens = input.shift().split('|');
        let command = tokens[0];
        if (command == "Move") {
            let index = Number(tokens[1]);
            message = message.substring(index) + message.slice(0, index);
        } else if (command == "Insert") {
            let index = Number(tokens[1]);
            let value = tokens[2];
            message = message.slice(0, index) + value + message.slice(index);
        } else if (command == "ChangeAll") {
            let oldStr = tokens[1];
            let newStr = tokens[2];
            while(message.includes(oldStr)){
                message = message.replace(oldStr, newStr);
            }
        }
    }

    console.log(`The decrypted message is: ${message}`);
    return;
}