secretChat

function solve(input) {

    let chat = input.shift()
    let token = input.shift()

    while(token !== `Reveal`) {

        let [comand,checkOne,checkTwo] = token.split(`:|:`)

        if(comand === `InsertSpace`) {
            chat = space(chat,checkOne)
        } else if(comand === `Reverse`) {
            chat = reversee(chat,checkOne)

        } else if(comand === `ChangeAll`) {
          chat =  change(chat,checkOne,checkTwo)
        }


         token = input.shift()
    }

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

    function space(array,index) {
    let result = ``
    let firstPart = ``
    firstPart = array.slice(0,index)
    let secondPart = ``
    secondPart = array.slice(index)
    result = result.concat(firstPart,` `,secondPart)
    array =  result
    console.log(array)


    return array
    }

    function reversee(array,substring) {


        let result = ``
        let finalRes = ``
        let ind =   array.indexOf(substring)

        if(ind > 0) {
        let checkInd = array.slice(ind)
        let revCheck = checkInd.split(``).reverse().join(``)
      result =  array.substring(0,ind)
      let finalRes = ``
    finalRes = finalRes.concat(result,revCheck)
    array = finalRes
    console.log(array)
        }
        else {
            console.log(`error`)

        }

        return array
    }

    function change(array,substring,replacement) {

        let result = ``

        for(let i=0;i<array.length;i++) {
            if(array[i] == substring) {

             result += replacement
            } else {
                result += array[i]
            }

        }
        console.log(result)
        return result

    }


}