function secretChat(input) {

    let message = input.splice(0, 1).toString()
    let dataLine = input.splice(0, input.indexOf("Reveal")).map(element => {
        let [command, ...numLine] = element.split(':|:')

        switch (command) {
            case "ChangeAll": {
                let [substring, replaced] = numLine
                let regex = new RegExp(substring, "g")
                message = message.replace(regex, replaced);
                //another way
                // while(message.includes(substring)){
                //     message = message.replace(substring,replaced)
                // }
            } break;
            case "Reverse": {
                if (message.includes(numLine)) {
                    message = message.replace(numLine[0], "")
                    let reverse = numLine[0].split("").reverse().join("")
                    message = message + reverse
                } else {
                    console.log("error")
                    return null
                }
            } break;
            case "InsertSpace": {
                let index = numLine
                message = message.substring(0, index) + " " + message.substring(index)
            } break;

        }
        console.log(message)
    })

    console.log(`You have a new text message: ${message}`)

}