// ==UserScript==
// @id             mlpchan-anon@scriptish
// @name           /anon/ anon enforcer
// @version        1.0
// @namespace      
// @author         
// @description    
// @include        https://mlpchan.net/*
// @run-at         document-end
// ==/UserScript==

(function() {

/* what the board tells us is name#trip overrides this script, but
   if the board tells us an empty name, or an empty trip this script
   overrides that with its full name and full trip if possible.
   Except on /anon/ depending which boxes are checked.
   */
    
if(localStorage.name) {
    var match = localStorage.name.match(/([^#]+)#?(.*)/);
    if(match) {
        if(match[1].length > 0) {
           GM_setValue('name',match[1]);
        }
        if(match[2].length > 0) {
           GM_setValue('trip',match[2]);
        }
    }
}

var prefs = {};
prefs.name = GM_getValue('name');
prefs.trip = GM_getValue('trip');

function reversePrefs() {
    var nametrip = null;    
    if(prefs.name) {
       nametrip = prefs.name;        
    }
    if(prefs.trip) {
        if(nametrip) {
            nametrip += '#'+prefs.trip;
        } else {
            nametrip = '#'+prefs.trip;
        }
    }    
    if(nametrip)         
        localStorage.name = nametrip;
}
reversePrefs();

var name;
var forms = document.getElementsByTagName('form');
for(var i=0;i<forms.length;++i) {
    var form = forms[i];
    if (form.getAttribute('action') == '/post.php') {
        var inputs = form.getElementsByTagName("input");
        for(var j=0;j<inputs.length;++j) {
            var input = inputs[j];
            if(input.name == 'name') {
                name = input;
                break;
            }
        }
        if(name) break;
    }
}

var qrname;

var info = {};

function updateInfo() {
    var nametrip = '';
    if(info.name) {
        nametrip = info.name;
    }
    if(info.trip) {
        if(nametrip) {
           nametrip += '#'+info.trip;
        } else {
            nametrip = '#'+info.trip;
        }
    }    
    if(name) 
        name.value = nametrip;
    if(qrname)
       qrname.value = nametrip;
}

function getQRName() {
    qrname = document.getElementById("qrname");
    if(qrname) {
        updateInfo();
        return;
    }
    setTimeout(getQRName,100);
}
    
getQRName();

if(!(new RegExp('/anon/').test(document.location))) {
    info.name = prefs.name;
    info.trip = prefs.trip;
    updateInfo();
    return;
}


var anonlink;
var list = document.getElementsByClassName("boardlist top");
if(list.length > 0) {
    list = list[0];
    var links = list.getElementsByClassName("boardlistactive");
    for(var i = 0; i < links.length; ++i) {
        var link = links[i];
        if (link.firstChild.nodeValue == 'anon') {
            anonlink = link;
            break;
        }
    }
} else {
    console.log('No board list found');
}

var box = document.createElement('span');
box.style.visibility = 'visible';
box.style.border = 'thick solid red';
if(anonlink) {
    anonlink.parentNode.insertBefore(box,anonlink.nextSibling);    
} else {
    console.warn("Couldn't find link to /anon/");
    var body = document.getElementsByTagName('body')[0];
    body.insertBefore(box,body.firstChild);
}


info = {};

function createCheckbox(ident) {    
    var check = document.createElement('input');
    check.setAttribute('type','checkbox');
    check.setAttribute('title','disable '+ident);
    check.checked = GM_getValue("disabled."+ident);
    function update() {
        if(check.checked) {
            info[ident] = null;
        } else {
            info[ident] = prefs[ident];
        }
        updateInfo();
    }
    update();
    check.addEventListener('change',function(e) {
        GM_setValue("disabled."+ident,check.checked);   
        update();
    },true);    
    box.appendChild(check);
}

createCheckbox('name');
createCheckbox('trip');
    
})();