// ==UserScript==
// @name        BnW FsB GvN
// @namespace   bnw_default_interface_fix
// @description Turns off ajax autoremoval deleted messages/comments; turns off 20 posts per page limit; hides every blacklisted post until it gets comments/recommendation
// @include     http://bnw.im/*
// @include     https://bnw.im/*
// @version     1.4
// @grant       unsafeWindow
// ==/UserScript==
(function (window, undefined) {
    'use strict';
    var w;
    if (typeof unsafeWindow !== undefined) {
        w = unsafeWindow;
    } else {
        w = window;
    }
    if (w.self != w.top) {
        return;
    }

    var BLACKLIST = ['anonymous', 'moskvano', 'x01eg'];

    var patch_bnw = function() {
        w.ws.onclose = function() {};
        w.ws.close();

        var add_node = function(html, to, at_top) {
            var node = $(html).hide();
            node.addClass("outerborder_added");
            node.find("img.avatar").removeClass("avatar_ps");
            node.find("img.imgpreview_ps").each(function() {
                $(this).removeClass("imgpreview_ps");
            });
            $("code",node).each(function(i, e) {hljs.highlightBlock(e);});
            node.mouseover(function() {
                $(this).removeClass("outerborder_added");
                $(this).unbind("mouseover");
            });
            if (at_top) {
                node.prependTo(to);
            } else {
                node.appendTo(to);
            }
            node.fadeIn("slow");
            w.change_favicon();
        };

        var main_page_handler = function(e) {
            var d = JSON.parse(e.data);
            var msg;
            if (d.type == "new_message" &&
                window.location.search.indexOf("page") == -1) {
                // Add new messages only to first page.
                    add_node(d.html, "#messages", true);
                    w.add_main_page_actions(d.id, d.user);
                    // make anonymous msg invisible until it gets recommendation
                    if (w.is_anonymous_filtered && BLACKLIST.includes(d.user)) {
                        msg = $("#"+d.id);
                        if (msg.length) {
                            msg.hide();
                        }
                    }
            } else if (d.type == "del_message") {
                msg = $("#"+d.id);
                if (msg.length) {
                    msg.removeClass("outerborder_added"
                    ).addClass("outerborder_deleted");
                }
            } else if (d.type == "upd_comments_count") {
                msg = $("#"+d.id);
                var t;
                if (msg.length) {
                    t = msg.find("div.sign").contents()[3];
                    t.nodeValue = t.nodeValue.replace(/\([0-9]+(\+)?/, "("+d.num+"$1");
                }
                // make anonymous msg visible since it got a comment
                if (w.is_anonymous_filtered && BLACKLIST.includes(msg.find(".usrid").text().slice(1))) {
                    if (d.num > 0) {
                        msg.show();
                    } else {
                        msg.hide();
                    }
                }
            } else if (d.type == "upd_recommendations_count") {
                msg = $("#"+d.id);
                if (msg.length) {
                    t = msg.find("div.sign").contents()[3];
                    var val = t.nodeValue;
                    var re = /\+[0-9]+\)/;
                    var new_val = d.num ? "+"+d.num+")" : ")";
                    if (val.match(re)) {
                        t.nodeValue = val.replace(re, new_val);
                    } else {
                        t.nodeValue = val.replace(/\)/, new_val);
                    }
                    // make anonymous msg visible since it got recommendation
                    if (w.is_anonymous_filtered && BLACKLIST.includes(msg.find(".usrid").text().slice(1))) {
                        if (d.num > 0) {
                            msg.show();
                        } else {
                            msg.hide();
                        }
                    }
                }
            }
        };

        var message_page_handler = function(e) {
            var d = JSON.parse(e.data);
            if (d.type == "new_comment") {
                add_node(d.html, "#comments", false);
                w.add_message_page_actions(d.id, d.user);
            } else if (d.type == "del_comment") {
                var short_id = d.id.split("/")[1];
                var comment = $("#"+short_id);
                if (comment.length) {
                    comment.removeClass("outerborder_added"
                    ).addClass("outerborder_deleted");
                }
            }
        };

        w.is_anonymous_filtered = localStorage.is_anonymous_filtered == "true" ? true : false;
        filter_anonymous_with_no_recommends();

        switch (w.page_type) {
            case "main":
                w.onmessage = main_page_handler;
                w.openws();
                // filter control button
                $("#login_button").before("<a href='#' class='headlink' id='filter_anon_button'>"+
                    (w.is_anonymous_filtered ? "Вернуть пуки" : "Откачать пуки")+
                    "</a>");
                $("#filter_anon_button").click(function() {
                    change_filter_state();
                    filter_anonymous_with_no_recommends();
                });
                break;
            case "message":
                w.onmessage = message_page_handler;
                w.openws();
                break;
            case "user":
                w.onmessage = main_page_handler;
                w.openws();
                break;
        }

        function change_filter_state() {
            w.is_anonymous_filtered = w.is_anonymous_filtered ? false : true;
            localStorage.is_anonymous_filtered = w.is_anonymous_filtered;
            var caption = w.is_anonymous_filtered ? "Вернуть пуки" : "Откачать пуки";
            $("#filter_anon_button").text(caption);
        }

        function filter_anonymous_with_no_recommends() {
            // preloaded posts
            $(".message").each(function() {
                var msg = $(this);
                if (BLACKLIST.includes(msg.find(".usrid").text().slice(1))) {
                    var t = msg.find("div.sign").contents()[3];
                    var val = t.nodeValue;
                    var comments_re = /\(([1-9][0-9]*)\+?/;
                    var recommends_re = /\+[0-9]+\)/;
                    if (w.is_anonymous_filtered && !val.match(recommends_re) && !val.match(comments_re)) {
                        // seems u got no recommends
                        msg.hide();
                    } else {
                        msg.show();
                    };
                }
            });
        }

        console.log('BnW ajax handlers have been successfuly patched');
    };

    if (w.addEventListener)
        w.addEventListener("load", patch_bnw, false);
    else if (w.attachEvent)
        w.attachEvent("onload", patch_bnw);
})(window);