function showHideMenu(){
    var doc = document.getElementById("moreoptions");
    if(doc.className == "hidden-by-default")
    {
        doc.className = "moreoptions";
    }else{
        doc.className = "hidden-by-default";
    }
}

function truncateCryptFields(){
    getEncFieldsListIntegers().forEach( element=> {
        document.getElementById("form_crypt_" + element).value = "";
    });
    getEncFieldsListStrings().forEach( element=> {
        document.getElementById("form_crypt_" + element).value = "";
    });
}
function getEncFieldsListStrings(){
    return ['iv','mode','adata','cipher','salt'];
}

function getEncFieldsListIntegers(){
    return ['v','iter','ks','ts'];
}

function crypt(){
    var key = document.getElementById("key").value;
    var enc = JSON.parse(sjcl.encrypt(key,document.getElementById("form_content").value));
    var encFields = getEncFieldsListStrings();
    encFields.forEach(element => {
        document.getElementById("form_crypt_" + element).value = enc[element];
    });
    var encFields = getEncFieldsListIntegers();
    encFields.forEach(element => {
        document.getElementById("form_crypt_" + element).value = parseInt(enc[element]);
    });

    document.getElementById("form_content").value = enc["ct"];
}

function uncrypt(){

    var key = document.getElementById("key").value;
    if( document.getElementById("form_content") ){

        var encArr = new Object();
        var encFields =  getEncFieldsListStrings();
        encFields.forEach(element => {
            encArr[element] = document.getElementById("form_crypt_" + element).value;
        });
        var encFields = getEncFieldsListIntegers();
        encFields.forEach(element => {
            encArr[element] = parseInt(document.getElementById("form_crypt_" + element).value);
        });
        encArr["ct"] = document.getElementById("form_content").value;


        try{

            var clearTxt = sjcl.decrypt(key,JSON.stringify(encArr));
            document.getElementById("form_content").value = clearTxt;
            truncateCryptFields();
        }
        catch(error)
        {
            alert("Le pad n'a pas pu être déchiffré.");
        }
    }else{
        sjclArr["ct"] = document.getElementById("content").innerHTML;
        try{
            var clearTxt = sjcl.decrypt(key,JSON.stringify(sjclArr));
            document.getElementById("content").innerHTML = clearTxt;
        }
        catch(error)
        {
            alert("Le pad n'a pas pu être déchiffré.");
        }
    }
}

function ready(){
    document.getElementById("showOptions").addEventListener("click",showHideMenu);
    if(document.getElementById("buttonCrypt")){
        document.getElementById("buttonCrypt").addEventListener("click",crypt);
    }
    document.getElementById("buttonUncrypt").addEventListener("click",uncrypt);
}