'use strict';
var formVars={};
var alertMapping={};
var alertList=[];
var alertCount=0;
var moreTopicCount=0;
var conn=false;
var selectedTopics=[];
var attachItemCallback=()=>{}
var quoteItemCallback=()=>{}
var baseTitle=document.title;
var wsBackoff=0;
var noAlerts=false;

// Topic move
var forumToMoveTo=0;

function pushNotice(msg) {
    let aBox = document.getElementsByClassName("alertbox")[0];
    let n = document.createElement('div');
    n.innerHTML = Tmpl_notice(msg).trim();
    aBox.appendChild(n);
    runInitHook("after_notice");
}

// TODO: Write a friendlier error handler which uses a .notice or something, we could have a specialised one for alerts
function ajaxError(xhr,status,e) {
    log("The AJAX request failed");
    log("xhr",xhr);
    log("status",status);
    log("e",e);
    if(status=="parsererror") log("The server didn't respond with a valid JSON response");
    console.trace();
}

function postLink(ev) {
    ev.preventDefault();
    let formAction = $(ev.target).closest('a').attr("href");
    $.ajax({ url:formAction, type:"POST", dataType:"json", error: ajaxError, data: {js: 1} });
}

function bindToAlerts() {
    log("bindToAlerts");
    $(".alertItem.withAvatar a").unbind("click");
    $(".alertItem.withAvatar a").click(function(ev) {
        ev.stopPropagation();
        ev.preventDefault();
        $.ajax({
            url: "/api/?a=set&m=dismiss-alert",
            type: "POST",
            dataType: "json",
            data: { id: $(this).attr("data-asid") },
            //error: ajaxError,
            success: () => {
                window.location.href = this.getAttribute("href");
            }
        });
    });
}

function addAlert(msg,notice=false) {
    var mmsg = msg.msg;
    if(mmsg[0]==".") mmsg = phraseBox["alerts"]["alerts"+mmsg];
    if("sub" in msg) {
        for(var i=0; i<msg.sub.length; i++) mmsg = mmsg.replace("\{"+i+"\}",msg.sub[i]);
    }

    let aItem = Tmpl_alert({
        ASID: msg.id,
        Path: msg.path,
        Avatar: msg.img || "",
        Message: mmsg
    })
    //alertMapping[msg.id] = aItem;
    let div = document.createElement('div');
    div.innerHTML = aItem.trim();
    alertMapping[msg.id] = div.firstChild;
    alertList.push(msg.id);

    if(notice) {
        // TODO: Add some sort of notification queue to avoid flooding the end-user with notices?
        // TODO: Use the site name instead of "Something Happened"
        if(Notification.permission==="granted") {
            var n = new Notification("Something Happened",{
                body: mmsg,
                icon: msg.img,
            });
            setTimeout(n.close.bind(n),8000);
        }
    }

    runInitHook("after_add_alert");
}

function updateAlertList(menuAlerts) {
    log("enter updateAlertList");
    log("alertList:",alertList);
    log("alertMapping:",alertMapping);
    log("alertCount:",alertCount);
    let alertListNode = menuAlerts.getElementsByClassName("alertList")[0];
    let alertCounterNode = menuAlerts.getElementsByClassName("alert_counter")[0];
    alertCounterNode.textContent = "0";
    
    alertListNode.innerHTML = "";
    let any = false;
    let j = 0;
    for(var i=0; i<alertList.length && j<8; i++) {
        any = true;
        alertListNode.appendChild(alertMapping[alertList[i]]);
        //outList += alertMapping[alertList[i]];
        j++;
    }
    if(!any) alertListNode.innerHTML = "<div class='alertItem'>"+phraseBox["alerts"]["alerts.no_alerts"]+"</div>";

    if(alertCount!=0) {
        alertCounterNode.textContent = alertCount;
        menuAlerts.classList.add("has_alerts");
        let nTitle = "("+alertCount+") "+baseTitle;
        if(document.title!=nTitle) document.title = nTitle;
    } else {
        menuAlerts.classList.remove("has_alerts");
        if(document.title!=baseTitle) document.title = baseTitle;
    }

    bindToAlerts();
    log("alertCount",alertCount)
    runInitHook("after_update_alert_list",alertCount);
}

function setAlertError(menuAlerts,msg) {
    let n = menuAlerts.getElementsByClassName("alertList")[0];
    n.innerHTML = "<div class='alertItem'>"+msg+"</div>";
}

var alertsInitted = false;
var lastTc = 0;
function loadAlerts(menuAlerts,eTc=false) {
    if(!alertsInitted) return;
    let tc = "";
    if(eTc && lastTc!=0) tc = "&t="+lastTc+"&c="+alertCount;
    $.ajax({
        type:'get',
        dataType:'json',
        url:'/api/?m=alerts'+tc,
        success: data => {
            if("errmsg" in data) {
                setAlertError(menuAlerts,data.errmsg)
                return;
            }
            if(!eTc) {
                alertList=[];
                alertMapping={};
            }
            if(!data.hasOwnProperty("msgs")) data = {"msgs":[],"count":alertCount,"tc":lastTc};
            /*else if(data.count != (alertCount + data.msgs.length)) tc = false;
            if(eTc && lastTc!=0) {
                for(var i in data.msgs) wsAlertEvent(data.msgs[i]);
            } else {*/
            log("data",data);
            for(var i in data.msgs) addAlert(data.msgs[i]);
            alertCount = data.count;
            updateAlertList(menuAlerts);
            try {
                localStorage.setItem("alertList",JSON.stringify(alertList));
                localStorage.setItem("alertMapping",JSON.stringify(alertMapping));
                localStorage.setItem("alertCount",alertCount);
            } catch(e) {
                localStorage.clear();
            }
            //}
            lastTc = data.tc;
        },
        error: (magic,status,er) => {
            let errtxt = "Unable to get the alerts";
            try {
                let dat = JSON.parse(magic.responseText);
                if("errmsg" in dat) errtxt = dat.errmsg;
            } catch(e) {
                log(magic.responseText);
                log(e);
            }
            log("er",er);
            setAlertError(menuAlerts,errtxt);
        }
    });
}

function SplitN(data,ch,n) {
    var o = [];
    if(data.length===0) return o;

    var lastI = 0;
    var j = 0;
    var lastN = 1;
    for(let i=0; i<data.length; i++) {
        if(data[i]===ch) {
            o[j++] = data.substring(lastI,i);
            lastI = i;
            if(lastN===n) break;
            lastN++;
        }
    }
    if(data.length > lastI) o[o.length-1] += data.substring(lastI);
    return o;
}

function wsAlertEvent(dat) {
    log("wsAlertEvent",dat)
    addAlert(dat,true);
    alertCount++;

    let aTmp = alertList;
    alertList = [alertList[alertList.length-1]];
    aTmp = aTmp.slice(0,-1);
    for(let i=0; i<aTmp.length; i++) alertList.push(aTmp[i]);
    // TODO: Add support for other alert feeds like PM Alerts
    let n = document.getElementById("general_alerts");
    // TODO: Make sure we update alertCount here
    lastTc = 0;
    updateAlertList(n/*,alist*/);
}

function runWebSockets(resume=false) {
    let s = "";
    if(window.location.protocol == "https:") s = "s";
    conn = new WebSocket("ws"+s+"://" + document.location.host + "/ws/");

    conn.onerror = e => {
        log(e);
    }

    // TODO: Sync alerts, topic list, etc.
    conn.onopen = () => {
        log("The WebSockets connection was opened");
        if(resume) conn.send("resume " + document.location.pathname + " " + Math.round((new Date()).getTime() / 1000) + '\r');
        else conn.send("page " + document.location.pathname + '\r');
        // TODO: Don't ask again, if it's denied. We could have a setting in the UCP which automatically requests this when someone flips desktop notifications on
        if(me.User.ID > 0) Notification.requestPermission();
    }

    conn.onclose = () => {
        conn = false;
        log("The WebSockets connection was closed");
        let backoff = 0.8;
        if(wsBackoff < 0) wsBackoff = 0;
        else if(wsBackoff > 12) backoff = 11;
        else if(wsBackoff > 5) backoff = 5;
        wsBackoff++;

        setTimeout(() => {
            if(!noAlerts) {
                let nl = document.getElementsByClassName("menu_alerts");
                for(var i=0; i < nl.length; i++) loadAlerts(nl[i],true);
            }
            runWebSockets(true);
        }, backoff * 60 * 1000);

        if(wsBackoff > 0) {
            if(wsBackoff <= 5) setTimeout(() => wsBackoff--, 5.5 * 60 * 1000);
            else if(wsBackoff <= 12) setTimeout(() => wsBackoff--, 11.5 * 60 * 1000);
            else setTimeout(() => wsBackoff--, 20 * 60 * 1000);
        }
    }

    conn.onmessage = (event) => {
        if(!noAlerts && event.data[0] == "{") {
            log("json message");
            let data = "";
            try {
                data = JSON.parse(event.data);
            } catch(e) {
                log(e);
                return;
            }

            if("msg" in data) wsAlertEvent(data);
            else if("event" in data) {
                if(data.event=="dismiss-alert"){
                    Object.keys(alertMapping).forEach((key) => {
                        if(key!=data.id) return;
                        alertCount--;
                        let index = -1;
                        for(var i=0; i < alertList.length; i++) {
                            if(alertList[i]==key) {
                                alertList[i] = 0;
                                index = i;
                            }
                        }
                        if(index==-1) return;

                        for(var i = index; (i+1) < alertList.length; i++) alertList[i] = alertList[i+1];
                        alertList.splice(alertList.length-1,1);
                        delete alertMapping[key];

                        // TODO: Add support for other alert feeds like PM Alerts
                        let generalAlerts = document.getElementById("general_alerts");
                        if(alertList.length < 8) loadAlerts(generalAlerts,true);
                        else updateAlertList(generalAlerts);
                    });
                }
            } else if("Topics" in data) {
                log("topic in data");
                log("data",data);
                // TODO: Handle desyncs more gracefully?
                // TODO: Send less unneccessary data?
                let topic = data.Topics[0];
                if(topic===undefined){
                    log("empty topic list");
                    return;
                }
                if("mod" in data) {
                    topic.CanMod = data.mod==1 || data.mod[0]==1;
                    if(data.lock==1) {
                        $(".val_lock").each(function(){
                            this.classList.remove("auto_hide");
                        });
                    }
                    if(data.move==1) {
                        $(".val_move").each(function(){
                            this.classList.remove("auto_hide");
                        });
                    }
                }
                // TODO: Fix the data race where the function hasn't been loaded yet
                let renTopic = Tmpl_topics_topic(topic);
                $(".topic_row[data-tid='"+topic.ID+"']").addClass("ajax_topic_dupe");

                let node = $(renTopic);
                node.addClass("new_item hide_ajax_topic");
                log("Prepending to topic list");
                $(".topic_list").prepend(node);
                moreTopicCount++;

                let blocks = document.getElementsByClassName("more_topic_block_initial");
                for(let i=0; i<blocks.length; i++) {
                    let block = blocks[i];
                    block.classList.remove("more_topic_block_initial");
                    block.classList.add("more_topic_block_active");

                    log("phraseBox",phraseBox);
                    let msgBox = block.getElementsByClassName("more_topics")[0];
                    msgBox.innerText = phraseBox["topic_list"]["topic_list.changed_topics"].replace("%d",moreTopicCount);
                }
            } else log("unknown message",data);
        }

        let messages = event.data.split('\r');
        for(var i=0; i<messages.length; i++) {
            let message = messages[i];
            //log("message",message);
            let msgblocks = SplitN(message," ",3);
            if(msgblocks.length < 3) continue;
            if(message.startsWith("set ")) {
                let oldInnerHTML = document.querySelector(msgblocks[1]).innerHTML;
                if(msgblocks[2]==oldInnerHTML) continue;
                document.querySelector(msgblocks[1]).innerHTML = msgblocks[2];
            } else if(message.startsWith("set-class ")) {
                // Fix to stop the inspector from getting all jittery
                let oldClassName = document.querySelector(msgblocks[1]).className;
                if(msgblocks[2]==oldClassName) continue;
                document.querySelector(msgblocks[1]).className = msgblocks[2];
            }
        }
    }
}

// TODO: Surely, there's a prettier and more elegant way of doing this?
function getExt(name) {
    if(!(name.indexOf('.') > -1)) throw("This file doesn't have an extension");
    return name.split('.').pop();
}

(() => {
    addInitHook("pre_init", () => {
        runInitHook("pre_global");
        log("before notify on alert")
        // We can only get away with this because template_alert has no phrases, otherwise it too would have to be part of the "dance", I miss Go concurrency :(
        log("noAlerts:",noAlerts);
        if(!noAlerts) {
        notifyOnScriptW("tmpl_alert", e => {
            if(e!=undefined) log("failed alert? why?",e)
        }, () => {
            if(!Tmpl_alert) throw("tmpl func not found");
            addInitHook("after_phrases", () => {
                // TODO: The load part of loadAlerts could be done asynchronously while the update of the DOM could be deferred
                $(document).ready(() => {
                    log("checking local storage cache");
                    alertsInitted = true;
                    let al = document.getElementsByClassName("menu_alerts");
                    let sAlertList = localStorage.getItem("alertList");
                    let sAlertMapping = localStorage.getItem("alertMapping");
                    let sAlertCount = localStorage.getItem("alertCount");
                    if(sAlertList!=null && sAlertList!="" &&
                        sAlertMapping!=null && sAlertMapping!="" &&sAlertCount!=null && sAlertCount!="" && sAlertCount!="0"
                    ) {
                        log("sAlertList",sAlertList)
                        log("sAlertMapping",sAlertMapping)
                        log("sAlertCount",sAlertCount)
                        alertList = JSON.parse(sAlertList)
                        alertMapping = JSON.parse(sAlertMapping)
                        alertCount =  parseInt(sAlertCount)
                        log("alertList",alertList)
                        log("alertMapping",alertMapping)
                        log("alertCount",alertCount)
                        for(var i=0; i<al.length; i++) loadAlerts(al[i],true);
                    } else for(var i=0; i<al.length; i++) loadAlerts(al[i]);
                    if(window["WebSocket"]) runWebSockets();
                });
            });
        });
        } else {
            addInitHook("after_phrases", () => {
                $(document).ready(() => {
                    if(window["WebSocket"]) runWebSockets();
                });
            });
        }

        $(document).ready(mainInit);
    });
})();

// TODO: Use these in .filter_item and pass back an item count from the backend to work with here
// Ported from common/parser.go
function PageOffset(count,page,perPage) {
    let offset = 0;
    let lastPage = LastPage(count, perPage)
    if(page > 1) offset = (perPage * page) - perPage;
    else if (page == -1) {
        page = lastPage;
        offset = (perPage * page) - perPage;
    } else page = 1;

    // We don't want the offset to overflow the slices, if everything's in memory
    //if(offset >= (count - 1)) offset = 0;
    return {Offset:offset,Page:page,LastPage:lastPage};
}
function LastPage(count,perPage) {
    return (count / perPage) + 1
}
function Paginate(currentPage,lastPage,maxPages) {
    let diff = lastPage - currentPage;
    let pre = 3;
    if(diff < 3) pre = maxPages - diff;
    
    let page = currentPage - pre;
    if(page < 0) page = 0;
    let o = [];
    while(o.length < maxPages && page < lastPage){
        page++;
        o.push(page);
    }
    return o;
}

function mainInit(){
    log("enter mainInit");
    runInitHook("start_init");

    $(".more_topics").click(ev => {
        ev.preventDefault();
        let blocks = document.getElementsByClassName("more_topic_block_active");
        for(let i=0; i<blocks.length; i++) {
            let bl = blocks[i];
            bl.classList.remove("more_topic_block_active");
            bl.classList.add("more_topic_block_initial");
        }
        $(".ajax_topic_dupe").fadeOut("slow", function(){
            $(this).remove();
        });
        $(".hide_ajax_topic").removeClass("hide_ajax_topic"); // TODO: Do Fade
        moreTopicCount = 0;
    })

    $(".add_like,.remove_like").click(function(ev) {
        ev.preventDefault();
        //$(this).unbind("click");
        let target = this.closest("a").getAttribute("href");
        log("target",target);

        let controls = this.closest(".controls");
        let hadLikes = controls.classList.contains("has_likes");
        let likeCountNode = controls.getElementsByClassName("like_count")[0];
        log("likeCountNode",likeCountNode);
        if(this.classList.contains("add_like")) {
            this.classList.remove("add_like");
            this.classList.add("remove_like");
            if(!hadLikes) controls.classList.add("has_likes");
            this.closest("a").setAttribute("href",target.replace("like","unlike"));
            likeCountNode.innerHTML = parseInt(likeCountNode.innerHTML) + 1;
        } else {
            this.classList.remove("remove_like");
            this.classList.add("add_like");
            let likeCount = parseInt(likeCountNode.innerHTML);
            if(likeCount==1) controls.classList.remove("has_likes");
            this.closest("a").setAttribute("href",target.replace("unlike","like"));
            likeCountNode.innerHTML = parseInt(likeCountNode.innerHTML) - 1;
        }

        //let likeButton = this;
        $.ajax({
            url:target,
            type:"POST",
            dataType:"json",
            data: { js: 1 },
            error: ajaxError,
            success: function (dat,status,xhr) {
                if("success" in dat && dat["success"] == "1") return;
                // addNotice("Failed to add a like: {err}")
                //likeCountNode.innerHTML = parseInt(likeCountNode.innerHTML)-1;
                log("data",dat);
                log("status",status);
                log("xhr",xhr);
            }
        });
    });

    $(".link_label").click(function(ev) {
        ev.preventDefault();
        let linkSel = $('#'+$(this).attr("data-for"));
        if(!linkSel.hasClass("link_opened")) {
            ev.stopPropagation();
            linkSel.addClass("link_opened");
        }
    });

    function rebuildPaginator(lastPage) {
        let urlParams = new URLSearchParams(window.location.search);
        let page = urlParams.get('page');
        if(page=="") page = 1;

        let pageList = Paginate(page,lastPage,5)
        //$(".pageset").html(Tmpl_paginator({PageList:pageList,Page:page,LastPage:lastPage}));
        let ok = false;
        $(".pageset").each(function(){
            this.outerHTML = Tmpl_paginator({PageList:pageList,Page:page,LastPage:lastPage});
            ok = true;
        });
        if(!ok) $(Tmpl_paginator({PageList:pageList,Page:page,LastPage:lastPage})).insertAfter("#topic_list");
    }

    function rebindPaginator() {
        // TODO: Take mostviewed into account
        // TODO: Get this to work with topics too
        $(".pageitem a").unbind("click");
        $(".pageitem a").click(function(ev) {
            ev.preventDefault();
            let url = "//"+window.location.host+window.location.pathname;
            let urlParams = new URLSearchParams(window.location.search);
            urlParams.set("page",new URLSearchParams(this.getAttribute("href")).get("page"));
            let q = "?";
            for(let item of urlParams.entries()) q += item[0]+"="+item[1]+"&";
            if(q.length>1) q = q.slice(0,-1);

            // TODO: Try to de-duplicate some of these fetch calls
            fetch(url+q+"&js=1",{credentials:"same-origin"})
                .then(r => {
                    if(!r.ok) throw(url+q+"&js=1 failed to load");
                    return r.json();
                }).then(d => {
                    if(!"Topics" in d) throw("no Topics in data");
                    let topics = d["Topics"];
                    log("ajax navigated to different page");

                    // TODO: Fix the data race where the function hasn't been loaded yet
                    let out = "";
                    for(let i=0;i<topics.length;i++) out += Tmpl_topics_topic(topics[i]);
                    $(".topic_list").html(out);

                    let obj = {Title:document.title,Url:url+q};
                    history.pushState(obj,obj.Title,obj.Url);
                    rebuildPaginator(d.LastPage);
                    rebindPaginator();
                }).catch(e => {
                    log("Unable to get script "+url+q+"&js=1",e);
                    console.trace();
                });
        });
    }

    // TODO: Render a headless topics.html instead of the individual topic rows and a bit of JS glue
    $(".filter_item").click(function(ev) {
        if(!window.location.pathname.startsWith("/topics/")) return
        ev.preventDefault();
        let that = this;
        let fid = this.getAttribute("data-fid");
        // TODO: Take mostviewed into account
        let url = "//"+window.location.host+"/topics/?fids="+fid;

        fetch(url+"&js=1",{credentials:"same-origin"})
        .then(r => {
            if(!r.ok) throw(url+"&js=1 failed to load");
            return r.json();
        }).then(d => {
            log("data",d);
            if(!"Topics" in d) throw("no Topics in data");
            let topics = d["Topics"];
            log("ajax navigated to "+that.innerText);
            
            // TODO: Fix the data race where the function hasn't been loaded yet
            let out = "";
            for(let i=0;i<topics.length;i++) out += Tmpl_topics_topic(topics[i]);
            $(".topic_list").html(out);
            //$(".topic_list").addClass("single_forum");

            baseTitle = that.innerText;
            if(alertCount > 0) document.title = "("+alertCount+") "+baseTitle;
            else document.title = baseTitle;
            let obj = {Title:document.title,Url:url};
            history.pushState(obj,obj.Title,obj.Url);
            rebuildPaginator(d.LastPage)
            rebindPaginator();

            $(".filter_item").each(function(){
                this.classList.remove("filter_selected");
            });
            that.classList.add("filter_selected");
            $(".topic_list_title h1").text(that.innerText);
            $(".link_select .link_option .link_recent").attr("href","//"+window.location.host+"/topics/?fids="+fid);
            $(".link_select .link_option .link_most_viewed").attr("href","//"+window.location.host+"/topics/most-viewed/?fids="+fid);
            unbindPage();
            bindPage();
        }).catch(e => {
            log("Unable to get script "+url+"&js=1",e);
            console.trace();
        });
    });

    if(document.getElementById("topicsItemList")!==null) rebindPaginator();
    if(document.getElementById("forumItemList")!==null) rebindPaginator();

    // TODO: Show a search button when JS is disabled?
    $(".widget_search_input").keypress(function(e) {
        if(e.keyCode!='13') return;
        // TODO: Only fire on /topics/
        event.preventDefault();
        // TODO: Take mostviewed into account
        let url = "//"+window.location.host+window.location.pathname;
        let urlParams = new URLSearchParams(window.location.search);
        urlParams.set("q",this.value);
        let q = "?";
        for(let item of urlParams.entries()) q += item[0]+"="+item[1]+"&";
        if(q.length>1) q = q.slice(0,-1);

        // TODO: Try to de-duplicate some of these fetch calls
        fetch(url+q+"&js=1",{credentials:"same-origin"})
            .then(r => {
                if(!r.ok) throw(url+q+"&js=1 failed to load");
                return r.json();
            }).then(d => {
                if(!"Topics" in d) throw("no Topics in data");
                let topics = d["Topics"];
                log("ajax navigated to search page");

                // TODO: Fix the data race where the function hasn't been loaded yet
                let out = "";
                for(let i=0;i<topics.length;i++) out += Tmpl_topics_topic(topics[i]);
                $(".topic_list").html(out);

                baseTitle = phraseBox["topic_list"]["topic_list.search_head"];
                $(".topic_list_title h1").text(phraseBox["topic_list"]["topic_list.search_head"]);
                if(alertCount > 0) document.title = "("+alertCount+") "+baseTitle;
                else document.title = baseTitle;
                let obj = {Title: document.title, Url: url+q};
                history.pushState(obj,obj.Title,obj.Url);
                rebuildPaginator(d.LastPage);
                rebindPaginator();
                $(".link_select .link_option .link_recent").attr("href",url+q);
                $(".link_select .link_option .link_most_viewed").attr("href",url+q);
        }).catch(e => {
            log("Unable to get script "+url+q+"&js=1",e);
            console.trace();
        });
    });

    runInitHook("before_init_bind_page");
    bindPage();
    runInitHook("after_init_bind_page");

    $(".edit_field").click(function(ev) {
        ev.preventDefault();
        let bp = $(this).closest('.editable_parent');
        let block = bp.find('.editable_block').eq(0);
        block.html("<input name='edit_field'value='"+block.text()+"'type='text'><a href='"+$(this).closest('a').attr("href")+"'><button class='submit_edit'type='submit'>Update</button></a>");

        $(".submit_edit").click(function(ev) {
            ev.preventDefault();
            let bp = $(this).closest('.editable_parent');
            let bl = bp.find('.editable_block').eq(0);
            let content = bl.find('input').eq(0).val();
            bl.html(content);

            let formAction = $(this).closest('a').attr("href");
            $.ajax({
                url: formAction+"?s="+me.User.S,
                type:"POST",
                dataType:"json",
                error: ajaxError,
                data: { js: 1, edit_item: content }
            });
        });
    });

    $(".edit_fields").click(function(ev) {
        ev.preventDefault();
        if($(this).find("input").length!==0) return;
        //log("clicked .edit_fields");
        var bp = $(this).closest('.editable_parent');
        bp.find('.hide_on_edit').addClass("edit_opened");
        bp.find('.show_on_edit').addClass("edit_opened");
        bp.find('.editable_block').show();
        bp.find('.editable_block').each(function(){
            var fieldName = this.getAttribute("data-field");
            var fieldType = this.getAttribute("data-type");
            if(fieldType=="list") {
                var fieldValue = this.getAttribute("data-value");
                if(fieldName in formVars) var it = formVars[fieldName];
                else var it = ['No','Yes'];
                var itLen = it.length;
                var out = "";
                for (var i=0; i<itLen; i++) {
                    var sel = "";
                    if(fieldValue == i || fieldValue == it[i]) {
                        sel = "selected ";
                        this.classList.remove(fieldName+'_'+it[i]);
                        this.innerHTML = "";
                    }
                    out += "<option "+sel+"value='"+i+"'>"+it[i]+"</option>";
                }
                this.innerHTML = "<select data-field='"+fieldName+"'name='"+fieldName+"'>"+out+"</select>";
            }
            else if(fieldType=="hidden") {}
            else this.innerHTML = "<input name='"+fieldName+"'value='"+this.textContent+"'type='text'>";
        });

        // Remove any handlers already attached to the submitter
        $(".submit_edit").unbind("click");

        $(".submit_edit").click(function(ev) {
            ev.preventDefault();
            var outData = {js: 1}
            var bp = $(this).closest('.editable_parent');
            bp.find('.editable_block').each(function() {
                var fieldName = this.getAttribute("data-field");
                var fieldType = this.getAttribute("data-type");
                if(fieldType=="list") {
                    var newContent = $(this).find('select :selected').text();
                    this.classList.add(fieldName+'_'+newContent);
                    this.innerHTML = "";
                } else if(fieldType=="hidden") {
                    var newContent = $(this).val();
                } else {
                    var newContent = $(this).find('input').eq(0).val();
                    this.innerHTML = newContent;
                }
                this.setAttribute("data-value",newContent);
                outData[fieldName] = newContent;
            });

            let href = $(this).closest('a').attr("href");
            //log("href",href);
            //log(outData);
            $.ajax({ url: href+"?s="+me.User.S, type:"POST", dataType:"json", data: outData, error: ajaxError });
            bp.find('.hide_on_edit').removeClass("edit_opened");
            bp.find('.show_on_edit').removeClass("edit_opened");
        });
    });

    $(this).click(() => {
        $(".selectedAlert").removeClass("selectedAlert");
        $("#back").removeClass("alertActive");
        $(".link_select").removeClass("link_opened");
    });

    $(".alert_bell").click(function(){
        let menuAlerts = $(this).parent();
        if(menuAlerts.hasClass("selectedAlert")) {
            event.stopPropagation();
            menuAlerts.removeClass("selectedAlert");
            $("#back").removeClass("alertActive");
        }
    });
    $(".menu_alerts").click(function(ev) {
        ev.stopPropagation();
        if($(this).hasClass("selectedAlert")) return;
        if(!conn) loadAlerts(this,true);
        this.className += " selectedAlert";
        document.getElementById("back").className += " alertActive"
    });
    $(".link_select").click(ev => ev.stopPropagation());

    $("input,textarea,select,option").keyup(ev => ev.stopPropagation())

    $("#themeSelectorSelect").change(function(){
        log("Changing the theme to "+this.options[this.selectedIndex].getAttribute("value"));
        $.ajax({
            url: this.form.getAttribute("action")+"?s="+me.User.S,
            type:"POST",
            dataType:"json",
            data: { "theme": this.options[this.selectedIndex].getAttribute("value"), js: 1 },
            error: ajaxError,
            success: function (dat,status,xhr) {
                log("Theme successfully switched");
                log("dat",dat);
                log("status",status);
                log("xhr",xhr);
                window.location.reload();
            }
        });
    });

    // The time range selector for the time graphs in the Control Panel
    $(".autoSubmitRedirect").change(function(){
        let els = this.form.elements;
        let s = "";
        for(let i=0; i<els.length; i++) {
            let el = els[i];
            if(el.nodeName=="SELECT") {
                s += el.name+"="+el.options[el.selectedIndex].getAttribute("value")+"&";
            }
            // TODO: Implement other element types...
        }
        if(s.length > 0) s = "?"+s.substr(0, s.length-1);

        window.location = this.form.getAttribute("action")+s; // Do a redirect as a form submission refuses to work properly
    });

    $(".unix_to_24_hour_time").each(function(){
        let unixTime = this.innerText;
        let date = new Date(unixTime*1000);
        log("date",date);
        let mins = "0"+date.getMinutes();
        let formattedTime = date.getHours()+":"+mins.substr(-2);
        log("formattedTime",formattedTime);
        this.innerText = formattedTime;
    });

    $(".unix_to_date").each(function(){
        // TODO: Localise this
        let monthList = ['Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec'];
        let date = new Date(this.innerText * 1000);
        log("date",date);
        let day = "0"+date.getDate();
        let formattedTime = monthList[date.getMonth()]+" "+day.substr(-2)+" "+date.getFullYear();
        log("formattedTime",formattedTime);
        this.innerText = formattedTime;
    });

    $("spoiler").addClass("hide_spoil");
    $(".hide_spoil").click(function(ev) {
        ev.stopPropagation();
        ev.preventDefault();
        $(this).removeClass("hide_spoil");
        $(this).unbind("click");
    });

    this.onkeyup = function(ev) {
        if(ev.which==37) this.querySelectorAll("#prevFloat a")[0].click();
        if(ev.which==39) this.querySelectorAll("#nextFloat a")[0].click();
    };

    function asyncGetSheet(src) {
        return new Promise((resolve,reject) => {
            let res = document.createElement('link');
            res.async = true;
    
            const onloadHandler = (e,isAbort) => {
                if (isAbort || !res.readyState || /loaded|complete/.test(res.readyState)) {
                    res.onload = null;
                    res.onreadystatechange = null;
                    res = undefined;
    
                    isAbort ? reject(e) : resolve();
                }
            }
    
            res.onerror = (e) => {
                reject(e);
            };
            res.onload = onloadHandler;
            res.onreadystatechange = onloadHandler;
            res.href = src;
            res.rel = "stylesheet";
            res.type = "text/css";
    
            const prior = document.getElementsByTagName('link')[0];
            prior.parentNode.insertBefore(res,prior);
        });
    }

    function stripQ(name) {
        return name.split('?')[0];
    }

    function loadArb(base,href,h=null) {
        fetch(href,{credentials:"same-origin"})
            .then(resp => {
                if(!resp.ok) throw(href+" failed to load");
                let xr = resp.headers.get("x-res")
                if(xr!=null) {
                    for(let res of xr.split(",")) {
                        let pro;
                        if(stripQ(getExt(res))=="css") pro = asyncGetSheet(pre+res)
                        else pro = asyncGetScript(pre+res)
                            pro.then(() => log("Loaded "+res))
                            .catch(e => {
                                log("Unable to get "+res,e);
                                console.trace();
                            });
                    }
                }
                return resp.text();
            }).then(d => {
                document.querySelector("#back").outerHTML = d;
                if(h!==null) h(d);
                $(".elapsed").remove();
                let obj = {Title:document.title,Url:base};
                history.pushState(obj,obj.Title,obj.Url);
            }).catch(e => {
                log("Unable to get script "+href,e);
                console.trace();
            });
    }

    /*$(".rowtopic a,a.rowtopic,a.forum_poster").click(function(ev) {
        let base = this.getAttribute("href");
        loadArb(base,base+"?i=1", () => {
            unbindTopic();
            bindTopic();
        });
        ev.stopPropagation();
        ev.preventDefault();
    })*/
    $("a").click(function(ev) {
        let base = this.getAttribute("href");
        if(base!="/topics/") return;
        loadArb(base,base+"?i=1", () => {
            unbindPage();
            bindPage();
        });
        ev.stopPropagation();
        ev.preventDefault();
    })

    runInitHook("almost_end_init");
    runInitHook("end_init");
}

function bindPage() {
    log("enter bindPage");
    $(".create_topic_link").click(ev => {
        ev.preventDefault();
        $(".topic_create_form").removeClass("auto_hide");
    });
    $(".topic_create_form .close_form").click(ev => {
        ev.preventDefault();
        $(".topic_create_form").addClass("auto_hide");
    });
    
    bindTopic();
    runInitHook("end_bind_page")
}

function unbindPage() {
    log("enter unbindPage");
    $(".create_topic_link").unbind("click");
    $(".topic_create_form .close_form").unbind("click");
    unbindTopic();
    runHook("end_unbind_page")
}

function bindTopic() {
    log("enter bindTopic");
    $(".open_edit").click(ev => {
        ev.preventDefault();
        $('.hide_on_edit').addClass("edit_opened");
        $('.show_on_edit').addClass("edit_opened");
        runHook("open_edit");
    });
    
    $(".topic_item .submit_edit").click(function(ev){
        ev.preventDefault();
        let nameInput = $(".topic_name_input").val();
        $(".topic_name").html(nameInput);
        $(".topic_name").attr(nameInput);
        let contentInput = $('.topic_content_input').val();
        $(".topic_content").html(quickParse(contentInput));
        let statusInput = $('.topic_status_input').val();
        $(".topic_status_e:not(.open_edit)").html(statusInput);

        $('.hide_on_edit').removeClass("edit_opened");
        $('.show_on_edit').removeClass("edit_opened");
        runHook("close_edit");

        $.ajax({
            url: this.form.getAttribute("action"),
            type:"POST",
            dataType:"json",
            data: {
                name: nameInput,
                status: statusInput,
                content: contentInput,
                js: 1
            },
            error: ajaxError,
            success: (dat,status,xhr) => {
                if("Content" in dat) $(".topic_content").html(dat["Content"]);
            }
        });
    });
    
    $(".delete_item").click(function(ev) {
        postLink(ev);
        $(this).closest('.deletable_block').remove();
    });

    // Miniature implementation of the parser to avoid sending as much data back and forth
    function quickParse(m) {
        const r = (o,n) => {
            m = m.replace(o,n)
        }
        r(":)", "😀")
        r(":(", "😞")
        r(":D", "😃")
        r(":P", "😛")
        r(":O", "😲")
        r(":p", "😛")
        r(":o", "😲")
        r(";)", "😉")
        r("\n","<br>")
        return m
    }

    $(".edit_item").click(function(ev){
        ev.preventDefault();

        let bp = this.closest('.editable_parent');
        $(bp).find('.hide_on_edit').addClass("edit_opened");
        $(bp).find('.show_on_edit').addClass("edit_opened");
        $(bp).find('.hide_on_block_edit').addClass("edit_opened");
        $(bp).find('.show_on_block_edit').addClass("edit_opened");
        let srcNode = bp.querySelector(".edit_source");
        let block = bp.querySelector('.editable_block');
        block.classList.add("in_edit");

        let src = "";
        if(srcNode!=null) src = srcNode.innerText;
        else src = block.innerHTML;
        block.innerHTML = Tmpl_topic_c_edit_post({
            ID: bp.getAttribute("id").slice("post-".length),
            Source: src,
            Ref: this.closest('a').getAttribute("href")
        })
        runHook("edit_item_pre_bind");

        $(".submit_edit").click(function(ev){
            ev.preventDefault();
            $(bp).find('.hide_on_edit').removeClass("edit_opened");
            $(bp).find('.show_on_edit').removeClass("edit_opened");
            $(bp).find('.hide_on_block_edit').removeClass("edit_opened");
            $(bp).find('.show_on_block_edit').removeClass("edit_opened");
            block.classList.remove("in_edit");
            let con = block.querySelector('textarea').value;
            block.innerHTML = quickParse(con);
            if(srcNode!=null) srcNode.innerText = con;

            let formAction = this.closest('a').getAttribute("href");
            // TODO: Bounce the parsed post back and set innerHTML to it?
            $.ajax({
                url: formAction,
                type:"POST",
                dataType:"json",
                data: { js: 1, edit_item: con },
                error: ajaxError,
                success: (dat,status,xhr) => {
                    if("Content" in dat) block.innerHTML = dat["Content"];
                }
            });
        });
    });

    $(".quote_item").click(function(ev){
        ev.preventDefault();
        ev.stopPropagation();
        let src = this.closest(".post_item").getElementsByClassName("edit_source")[0];
        let con = document.getElementById("input_content")
        log("con.value",con.value);

        let item;
        if(con.value=="") item = "<blockquote>"+src.innerHTML+"</blockquote>"
        else item = "\r\n<blockquote>"+src.innerHTML+"</blockquote>";
        con.value = con.value+item;
        log("con.value",con.value);

        // For custom / third party text editors
        quoteItemCallback(src.innerHTML,item);
    });

    //id="poll_results_{pollid}" class="poll_results auto_hide"
    $(".poll_results_button").click(function(){
        let pollID = $(this).attr("data-poll-id");
        $("#poll_results_"+pollID).removeClass("auto_hide");
        fetch("/poll/results/"+pollID, {
            credentials: 'same-origin'
        }).then(resp => resp.text()).catch(e => console.error("e",e)).then(rawData => {
            // TODO: Make sure the received data is actually a list of integers
            let data = JSON.parse(rawData);
            let allZero = true;
            for(let i=0; i<data.length; i++) {
                if(data[i]!="0") allZero = false;
            }
            if(allZero) {
                $("#poll_results_"+pollID+" .poll_no_results").removeClass("auto_hide");
                log("all zero")
                return;
            }

            $("#poll_results_"+pollID+" .user_content").html("<div id='poll_results_chart_"+pollID+"'></div>");
            log("rawData",rawData);
            log("series",data);
            Chartist.Pie('#poll_results_chart_'+pollID, {
                 series: data,
            }, {
                height: '120px',
            });
        })
    });

    runInitHook("end_bind_topic");
}

function unbindTopic() {
    log("enter unbindTopic");
    $(".open_edit").unbind("click");
    $(".topic_item .submit_edit").unbind("click");
    $(".delete_item").unbind("click");
    $(".edit_item").unbind("click");
    $(".submit_edit").unbind("click");
    $(".quote_item").unbind("click");
    $(".poll_results_button").unbind("click");
    runHook("end_unbind_topic");
}