// ==UserScript==
// @name        bdwmBlacklist
// @namespace   bdwmBlacklist
// @description blacklist the links from certain boards in the main page.
// @include     *bdwm.net/bbs/main0.php
// @version     0.2a
// @grant       none
// ==/UserScript==
function boardNameFromLink(link) {
var idx = link.indexOf('board=');
if (idx==-1) {
return null;
} else {
return link.substring(idx+6).match(/\w+/)[0];
}
}
function nodeWithClass(node, classKey) {
// find an ancestor of a node
// whose class name contains classKey
myNode = node;
if (node==null) {
console.log('null node');
return null;
}
// find the ancestor with certain class
while (node.className!=null && node.className.indexOf(classKey)<0) {
node = node.parentNode;
}
if (node.className==null) {
console.log('error finding class, return the node instead');
return myNode;
} else {
console.log('Class ' + node.className + ' found.');
return node;
}
}
function blacklistBoard(boardlist) {
console.log('Going to block '+boardlist.length+' boards.');
var blackList = {};
for (var i in boardlist) {
blackList[boardlist[i]] = true;
}
var links = document.getElementsByTagName('a');
var nodesToRemove = [];
console.log(links.length+' links detected.');
for (var i in links) {
console.log('Link: ' + links[i].href);
if (links[i].href == null) continue;
var bName = boardNameFromLink(links[i].href);
//    console.log('Find board: ' + bName);
if (bName != null && blackList[bName]) {
var spanNode = nodeWithClass(links[i], 'Rank');
if (spanNode != null && nodesToRemove.indexOf(spanNode)<0) {
// not exist, add it
console.log('Going to remove class: ' + spanNode.className);
nodesToRemove.push(spanNode);
}
}
}
console.log('Removing...');
for (var i in nodesToRemove) {
console.log('Removing class: ' + nodesToRemove[i].className);
nodesToRemove[i].parentNode.removeChild(nodesToRemove[i]);
}
}
blacklistBoard(['Boy', 'SecretGarden', 'PieBridge', 'Triangle', "Joke"]);