RES - Comment filter

modules['filterComments'] = {
    moduleID: 'filterComments',
    moduleName: 'Filter Comments',
    category: 'Filters',
    options: {
        keywords: {
            type: 'table',
            fields: [{
                name: 'keyword',
                type: 'text'
            }],
            value: [],
            description: 'Type in title keywords you want to ignore if they show up in a comment. The comment body will be hidden and replaced with a placeholder.'
        },
        hideComment: {
            type: 'boolean',
            value: false,
            description: 'If a comment is filtered, hide the entire comment.'
        },
        filteredCommentText: {
            type: 'text',
            value: '[Filtered] - Click to reveal',
            description: "When a comment is 'soft' filtered this is the default placeholder."
        },
        filteredCommentTextColour: {
            type: 'text',
            value: 'Red',
            description: 'Change the colour of the placeholder text.'
        }
    },
    description: 'Filter comments containing some text',
    isEnabled: function() {
        return RESConsole.getModulePrefs(this.moduleID);
    },
    include: Array(/https?:\/\/([a-z]+).reddit.com\/[-\w\.\/]+\/comments\/[-\w\.]+/i),
    isMatchURL: function() {
        return RESUtils.isMatchURL(this.moduleID);
    },
    applyCommentFilter: function(ele) {
        var filteredPara;
        for (var i = 0, lene = ele.length; i < lene; i += 1) {
            if (ele[i].innerHTML) {
                if (this.filterComment(ele[i].innerHTML.toString())) {
                    if (this.options.hideComment.value) {
                        ele[i].parentNode.parentNode.parentNode.parentNode.style.display = "none";
                    }
                    else {
                        filteredPara = document.createElement('p');
                        if(modules['filterComments'].options.filteredCommentText.value){
                        filteredPara.innerHTML = modules['filterComments'].options.filteredCommentText.value;
                        } else {filteredPara.innerHTML="[Filtered] - Click to reveal";};
                        filteredPara.setAttribute('style', 'cursor:pointer;font-weight:bolder !important;');
                        filteredPara.style.color = modules['filterComments'].options.filteredCommentTextColour.value;
                        filteredPara.setAttribute('onclick',';this.style.display="none";this.parentNode.querySelector(".md").style.display="block";');
                        ele[i].parentNode.appendChild(filteredPara);
                        ele[i].style.display="none";
                        }
                    }
                }
            }
    },
    go: function () {
        if ((this.isEnabled()) && (this.isMatchURL())) {
            if (this.options.keywords.value) {
            document.body.addEventListener('DOMNodeInserted', function(ev) {
            if ((event.target.tagName == 'DIV') && (/comment/ig.test(event.target.getAttribute('class')))) {
                var ele = ev.target.querySelectorAll('.md');
                modules['filterComments'].applyCommentFilter(ele);
            }
        }, false);
        var ele = document.querySelectorAll('.commentarea .sitetable .md:not(.markhelp)');
        this.applyCommentFilter(ele);
        }
        }

    },
    filterComment: function(comment) {
        return this.arrayContainsSubstring(this.options.keywords.value, comment.toLowerCase());
    },
    arrayContainsSubstring: function(obj, substring) {
        var re;
        for(var j=0, lenobj = obj.length;j<lenobj;j+=1){
        re = "\\b" + obj[j].toString().toLowerCase() + "\\b";
        if (substring.match(re)) {
            return true;
        }
        }
        return false;
        }

};