// ==UserScript==
// @name         Scratch Forums Composer Swag
// @namespace    http://aputurk.tk/
// @version      0.1
// @description  Adds more posting tools to the Scratch forums composer
// @author       MegaApuTurkUltra
// @include      http://scratch.mit.edu/discuss*
// @include      https://scratch.mit.edu/discuss*
// @require      https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js
// @require      https://ajax.googleapis.com/ajax/libs/jqueryui/1.11.3/jquery-ui.min.js
// @grant        none
// @downloadURL none
// ==/UserScript==
this.$ = this.jQuery = jQuery.noConflict(true);

console.log("Scratch forums swag running");
// buttons for color, center, and code
$('<li class="markItUpButton markItUpButtonSwag1 "><a href="" title="Color">Color</a></li>').insertAfter(".markItUpButton7")
.find("a").css("background-image", "url(http://i.cubeupload.com/PsGwu4.png)").click(function(e){
    var color = prompt("Enter a hex color, rgb(a) color, or CSS color name");
    if(color === null || color === ""){ e.preventDefault(); return false; }
    $("#id_body").replaceSel('[color='+color+']'+$("#id_body").getSel()+'[/color]');
    e.preventDefault();
    return false;
});
$('<li class="markItUpButton markItUpButtonSwag3 "><a href="" title="Center">Center</a></li>').insertAfter(".markItUpButtonSwag1")
.find("a").css("background-image", "url(http://i.cubeupload.com/tfrXFd.png)").click(function(e){
    $("#id_body").replaceSel('[center]'+$("#id_body").getSel()+'[/center]');
    e.preventDefault();
    return false;
});
$('<li class="markItUpButton markItUpButtonSwag3 "><a href="" title="Code">Code</a></li>').insertAfter(".markItUpButton14")
.find("a").css("background-image", "url(http://i.cubeupload.com/XqOaKz.png)").click(function(e){
    var code = prompt("Enter a language");
    if(code === null || code === ""){ e.preventDefault(); return false; }
    $("#id_body").replaceSel('[code='+code+']\n'+$("#id_body").getSel()+'\n[/code]');
    e.preventDefault();
    return false;
});
// and now for the swaggy sticky quoter
var currentStickyTitle = "";
var currentStickyLink = "";
var onSelectionPage = false;
var cannedDlg = $("<div id='canned-dlg' title='Insert Canned Quote'>Loading...<br/><div id='canned-progress'></div></div>").dialog({
    autoOpen: false,
    buttons: {
        "Cancel": function(){
            $(this).dialog("close");
        }
    },
    width: 500,
    height: 500,
    show: "fade",
    hide: "fade",
    dialogClass: "jqui-modal canned-dlg"
});
var menu;
var select = $("<div id='canned-page2'><p>Select the part of the post you want, then click OK</p>\
<textarea id='canned-select'>Loading...</textarea><br/><button id='canned-ok'>Use selection</button></div>");
var ajaxLoading = false;
function loadAjax(){
    if(ajaxLoading) return;
    ajaxLoading = true;
    $.get("/discuss/", {dataType:"html"}, function(data){
        menu = $("<ul id='canned-menu'></ul>");
        $(data).find(".tclcon a").each(function(){
            menu.append(
                $("<li></li>").addClass("canned-menu-item").attr("data-link", $(this).attr("href")).append($("<button></button")
                                                                                                           .text($(this).text()).addClass("canned-menu-button canned-primary")));
        });
        var completeXHRs = 0;
        var totalXHRs = menu.find("li").length;
        var complete = function(){
            completeXHRs++;
            $("#canned-progress").progressbar({value:Math.round(100*completeXHRs/totalXHRs)});
            if(completeXHRs >= totalXHRs){
                $("#canned-dlg").html("");
                $("#canned-dlg").append(menu);
                cannedDlg.append(select);
                $("#canned-select").css({"width":"100%"}).attr("rows","10");
                $("#canned-ok").click(function(e){
                    var sel = $("#canned-select").getSel();
                    console.log(sel);
                    if(sel===null || sel==="") return;
                    $("#id_body").replaceSel('[quote]\n[b]As stated on the sticky [url=https://scratch.mit.edu'+currentStickyLink+']'
                                             +currentStickyTitle.replace("(New Posts)", "")+'[/url]:[/b]\n\n'+sel+'\n[/quote]');
                    cannedDlg.dialog("close");
                    e.preventDefault();
                    return false;
                });
                select.hide();
                $(".canned-menu-button").button().css("width", "100%");
                $(".canned-menu-button.canned-primary").click(function(){
                    $(this).parent().find(".canned-submenu").slideToggle();
                    cannedDlg.dialog({title: "Select a sticky topic"});
                });
                $(".canned-menu-button.canned-secondary").click(function(){
                    cannedDlg.dialog({title: "Select the part of the sticky you want"});
                    $("#canned-select").val("Loading...");
                    var url = $(this).parent().attr("data-sticky-link");
                    currentStickyTitle = $(this).parent().attr("data-sticky-title");
                    currentStickyLink = $(this).parent().attr("data-sticky-link");
                    menu.fadeOut(700, function(){
                        select.fadeIn();
                    });
                    onSelectPage = true;
                    $.get(url, {dataType:"html"}, function(data3){
                        var source = $(data3).find(".firstpost").eq(0).find(".conr").next().attr("href");
                        $.get(source+"source/", function(data4){
                            $("#canned-select").val(data4);
                        });
                    });
                });
                $(".canned-submenu").hide();
                menu.css("list-style-type", "none");
                $(".canned-submenu").css("list-style-type", "none");
            }
        };
        menu.find("li").each(function(){
            var thisLi = $(this);
            $.get($(this).attr("data-link"), {dataType:"html"}, function(data2){
                var submenu = $("<ul class='canned-submenu'></ul");
                $(data2).find(".isticky").each(function(){
                    var a = $(this).next().find("a");
                    submenu.append(
                        $("<li></li>").addClass("canned-menu-item").attr("data-sticky-link", a.attr("href")).attr("data-sticky-title", a.text()).append($("<button></button")
                                                                                                                                                        .text(a.text()).addClass("canned-menu-button canned-secondary")));
                });
                thisLi.append(submenu);
            }).always(function(){
                complete();
            });
        });

    });
}
$(".canned-dlg button.ui-dialog-titlebar-close").hide();
$('<li class="markItUpButton markItUpButtonSwag2 "><a href="" title="Canned quotes">Canned quotes</a></li>').insertAfter(".markItUpButton11")
.find("a").css("background-image", "url(http://i.cubeupload.com/l6I5Sk.png)").click(function(e){
    loadAjax();
    cannedDlg.dialog({title: "Select a forum section to find stickies in"}).dialog("open");
    if(typeof menu !== "undefined") menu.show();
    select.hide();
    onSelectPage = false;
    e.preventDefault();
    return false;
});

var draftStatus = $("<span></span>");
var currentSessionRnd = Math.round(Math.random() * 1000000000);

$('<li class="markItUpButton markItUpButtonSwag3 "><a href="javascript:void(0)" title="Save draft">Save draft</a></li>').insertAfter(".markItUpButton16")
.find("a").css("background-image", "url(http://i.cubeupload.com/NY2bfk.png)").click(function(e){
    var title = "draft_" + currentSessionRnd;
    if($("#id_name").length > 0) title = $("#id_name").val();
    var content = $("#id_body").val();
    var drafts = {};
    if(typeof localStorage['forumSwagDrafts'] !== "undefined")
        drafts = JSON.parse(localStorage['forumSwagDrafts']);
    if(drafts.hasOwnProperty(title)){
        if(!confirm("Overwrite draft '" + title + "'?")){
            e.preventDefault();
            return false;
        }
    }
    drafts[title] = content;
    localStorage['forumSwagDrafts'] = JSON.stringify(drafts);
    draftStatus.text("Saved draft: "+title).show().fadeOut(1000);
    e.preventDefault();
    return false;
});

$('<li class="markItUpButton markItUpButtonSwag4 "><a href="javascript:void(0)" title="Open draft">Open draft</a></li>').insertAfter(".markItUpButton16")
.find("a").css("background-image", "url(http://i.cubeupload.com/BSsouH.png)").click(function(e){
    if(typeof localStorage['forumSwagDrafts'] === "undefined") localStorage['forumSwagDrafts'] = JSON.stringify({});
    var drafts = JSON.parse(localStorage['forumSwagDrafts']);
    var select = $("<select><option value='__internal_default' disabled>&gt; Select a draft</option></select").css("height","16px");
    select.append("<option value='__internal_del'>&gt; Delete a draft</option>");
    var hasItems = false;
    for(var key in drafts){
        if(drafts.hasOwnProperty(key)){
            select.append($("<option></option>").attr("value", key).text(key));
            hasItems = true;
        }
    }
    if(!hasItems) {
        draftStatus.text("No drafts!").show().fadeOut(1000);
        e.preventDefault();
        return false;
    }
    select.append($("<option></option>").attr("value", "__internal_none").text("Cancel"));
    draftStatus.html("").append(select).show();
    select.on("change", function(){
        var value = $(this).val();
        if(value === "__internal_none"){
            draftStatus.fadeOut();
            return;
        }
        var is_del = typeof $(this).attr("data-delete") !== "undefined";
        if(is_del){
            if(!confirm("Delete '"+value+"'?")){
                $(this).val("__internal_default");
                return;
            }
            var drafts = JSON.parse(localStorage['forumSwagDrafts']);
            delete drafts[value];
            localStorage['forumSwagDrafts'] = JSON.stringify(drafts);
            draftStatus.fadeOut();
            return;
        }
        
        if(value === "__internal_del"){
            $(this).attr("data-delete", "yes");
            $(this).find("option").eq(0).text("Select a draft to delete");
            $(this).find("option").eq(1).remove();
            $(this).val("__internal_default");
            return;
        }

        if($("#id_body").val().trim() !== ""){
            if(!confirm("Overwrite text in editor?")){
                $(this).val("__internal_default");
                return;
            }
        }

        var drafts2 = JSON.parse(localStorage['forumSwagDrafts']);
        if($("#id_name").length > 0) {
            $("#id_name").val(value);
        }
        $("#id_body").val(drafts2[value]);
        draftStatus.text("Loaded draft: " + value).show().fadeOut(1000);
    });
    e.preventDefault();
    return false;
});

draftStatus.insertAfter(".markItUpButtonSwag4");

// <hah>
$(".postsignature").each(function(){
    var img = $("<img/>").attr("src","http://i.cubeupload.com/h1KKLg.gif").css({
        "height": $(this).height(),
        "position": "absolute",
        "top": "0px",
        "left": "-110px"
    }).addClass("es").click(window.open.bind(window, "http://scratch.mit.edu/discuss/youtube/2HQaBWziYvY", "_blank", ""));
    $(this).css("position", "relative").append(img);
    (function(img, width){
        setInterval(function(){
            img.css("left", "-110px").delay(Math.round(Math.random()*1000)).animate({left: width+100}, 5000, "linear");
        }, 6000);
    })(img, $(this).width());
});
// </hah>

// mostly from http://stackoverflow.com/a/3966822/1021196
function getInputSelection(el) {
    var start = 0, end = 0, normalizedValue, range,
        textInputRange, len, endRange;

    if (typeof el.selectionStart == "number" && typeof el.selectionEnd == "number") {
        start = el.selectionStart;
        end = el.selectionEnd;
    } else {
        range = document.selection.createRange();

        if (range && range.parentElement() == el) {
            len = el.value.length;
            normalizedValue = el.value.replace(/\r\n/g, "\n");

            // Create a working TextRange that lives only in the input
            textInputRange = el.createTextRange();
            textInputRange.moveToBookmark(range.getBookmark());

            // Check if the start and end of the selection are at the very end
            // of the input, since moveStart/moveEnd doesn't return what we want
            // in those cases
            endRange = el.createTextRange();
            endRange.collapse(false);

            if (textInputRange.compareEndPoints("StartToEnd", endRange) > -1) {
                start = end = len;
            } else {
                start = -textInputRange.moveStart("character", -len);
                start += normalizedValue.slice(0, start).split("\n").length - 1;

                if (textInputRange.compareEndPoints("EndToEnd", endRange) > -1) {
                    end = len;
                } else {
                    end = -textInputRange.moveEnd("character", -len);
                    end += normalizedValue.slice(0, end).split("\n").length - 1;
                }
            }
        }
    }

    return {
        start: start,
        end: end
    };
}
function getSelectedText(el){
    var sel = getInputSelection(el), val = el.value;
    return val.slice(sel.start, sel.end);
}
function replaceSelectedText(el, text) {
    var sel = getInputSelection(el), val = el.value;
    el.value = val.slice(0, sel.start) + text + val.slice(sel.end);
}
$.fn.getSel = function() {
    return getSelectedText($(this).get(0));
};
$.fn.replaceSel = function(text){
    replaceSelectedText($(this).get(0), text);
};