/*

* Lists updates to watchlisted pages in a box at the top of [[Special:Watchlist]] after clicking on the "auto-update" tab

*

* Only works on watchlists with fewer than 500 pages

*

* If you add a new page to your watchlist after the script has been initiated, you will have to reload your watchlist and 

* re-initiate the script for it to detect the new page.

*

* Checks, by default, every 5 seconds

*

* This can be custom-set by adding this line to your JavaScript file ([[Special:MyPage/[skin-name].js]]) after the importScript 

* declaration for this script (importScript("User:Animum/watchlistUpdate.js");) (e.g., setting timeout to 10 seconds):

    importScript("User:Animum/watchlistUpdate.js");

    var updateSeconds = 10;

*

* To disable alerts upon an update to a page, add this line to your monobook.js (or other skin.js) file:

    var alertOnUpdate = false;

*/



if(typeof(updateSeconds) == "undefined") var updateSeconds = 5;

if(typeof(alertOnUpdate) == "undefined") var alertOnUpdate = true;

var isSysop = /sysop/.test(mw.config.get('wgUserGroups'));

var isRollbacker = /rollbacker/.test(mw.config.get('wgUserGroups'));



function watchlistUpdate() {}



watchlistUpdate.clearContainer = function() {

    getElementsByClassName(document, "div", "mw-js-message-watchlistUpdateContainer")[0].getElementsByTagName("ul")[0].innerHTML = "";

}



watchlistUpdate.isIP = function(ip) { //From [[MediaWiki:Sysop.js]]

    return /\b(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\b/.test(ip);

}



watchlistUpdate.init = function() {

    if(getElementsByClassName(document, "div", "mw-js-message-watchlistUpdateContainer")[0]) return; //User has already initiated the script once; abort.

    jsMsg("Any updates to your watchlisted pages will appear below (<a href=\"javascript:watchlistUpdate.clearContainer()\">clear list</a>):\n<ul></ul>", "watchlistUpdateContainer");

    var req = sajax_init_object();

    req.open("GET", mw.config.get('wgScriptPath') + "/api.php?action=query&format=json&list=watchlist&wllimit=500&wlprop=ids|title", false);

    req.send(null);

    var pagelist = eval("(" + req.responseText + ")").query.watchlist;

    var pages = new Array();

    var revids = new Array();

    for(i=0; i<pagelist.length; i++) {

        var page = pagelisti];

        var addData = function() {

            pages.push(page.title);

            revids.push(page.revid);

        }

        if(typeof WatchlistConfig != "undefined") { 

            if(typeof WatchlistConfig.ignorePages != "undefined") {

                if(WatchlistConfig.ignorePages.length > 0) {

                    if(WatchlistConfig.ignorePages.indexOf(page.title) == -1) { //Remove pages that [[User:Gary King/hide pages in watchlist.js]] ignores

                        addData(); //Populates the "pages" array with the links (exludes special pages)

                    }

                } else {

                    addData();

                }

            } else { //User has hide_pages_in_watchlist.js installed but does not have a list of pages to ignore.

                addData();

            }

        } else { //User doesn't use hide_pages_in_watchlist.js.

            addData();

        }

    }

    window.setInterval(function() { watchlistUpdate.doUpdate(pages, revids); }, updateSeconds*1000);

    delete req;

}



watchlistUpdate.formatSummary = function(comment, title) {

    comment = comment.replace("<", "&lt;").replace(">", "&gt;"); //Preliminary replacement to prevent formatting errors

    if(comment.search(/\/\*.*\*\//) != -1) { //Section name

        var section = comment.split(/\/\* ?/)[1].split(/ ?\*\//)[0];

        comment = comment.replace(/\/\*.*\*\//g, "<span class=\"autocomment\"><a href=\"" + mw.config.get('wgScript') + "?title=" + encodeURIComponent(title.replace(/ /g, "_")) + "#" + encodeURIComponent(section.replace(/ /g, "_")).replace(/\%/g, ".") + "\" target=\"_blank\">&rarr;</a>" + section + (comment.split(/ ?\*\//)[1].length > 0 ? ":" : "") + "</span>");

    }

    comment = comment.replace(/\[\[([^\|\]]+)\|?(.*?)\]\]/g, function (ignore, link, display) { return "<a href=\"" + mw.config.get('wgScript') + "?title=" + encodeURIComponent(link.replace(/ /g, "_")) + "\" target=\"_blank\">" + (display || link) + "</a>"}); //Stolen from amelvand.js (yes, I'm lazy)

    return comment;

}



watchlistUpdate.doUpdate = function(pages, revids) {

    var container = getElementsByClassName(document, "div", "mw-js-message-watchlistUpdateContainer")[0];

    if(!container) { //If, for some reason, another jsMsg has overtaken ours...

        jsMsg("Any updates to your watchlisted pages will appear below (<a href=\"javascript:watchlistUpdate.clearContainer()\">clear list</a>):\n<ul></ul>", "watchlistUpdateContainer");

        container = getElementsByClassName(document, "div", "mw-js-message-watchlistUpdateContainer")[0]; //Error-catcher

    }

    var req = sajax_init_object();

    req.open("GET", mw.config.get('wgScriptPath') + "/api.php?action=query&format=json&prop=revisions&rvtoken=rollback&titles=" + pages.join("|").toString(), false);

    req.send(null);

    var info_ = eval("(" + req.responseText + ")").query.pages;

    for (var index in info_) {

        var info = info_index];

        var revision = info.revisions0];

        if(revidspages.indexOf(info.title)] != revision.revid) {

            var title = info.title;

            var user = revision.user;

            var timestamp = revision.timestamp.split("T")[1].split("Z")[0].split(":");

            var summary = revision.comment;

            var encoded = {

                "title": encodeURIComponent(title.replace(/ /g, "_")),

                "user" : encodeURIComponent(user.replace(/ /g, "_")),

                "token": encodeURIComponent(revision.rollbacktoken)

            };

            container.getElementsByTagName("ul")[0].innerHTML += "<li> <tt>" + timestamp0 + ":" + timestamp1

                + (typeof(revision.minor) == "string" ? " <b>m" + (typeof(revision.bot) == "string" ? "b</b>" : "</b>") : "") + " </tt>"

                + "<a href=\"/wiki/" + encoded.title + "\" target=\"_blank\">" + title + "</a> "

                + "(<a href=\"" + mw.config.get('wgScript') + "?title=" + encoded.title + "&curid=" + info.pageid + "&diff=" + revision.revid + "&oldid=" + revision.parentid + "\" target=\"_blank\">diff</a>)"

                + " by <a href=\"/wiki/" + (this.isIP(user) ? "Special:Contributions/" : "User:") + encoded.user + "\" target=\"_blank\">" + user + "</a>"

                + " (<a href=\"/wiki/User_talk:" + encoded.user + "\" target=\"_blank\">talk</a>" + (this.isIP(user) ? (isSysop ? " | <a href=\"/wiki/Special:Block" + encoded.user + "\" target=\"_blank\">block</a>)" : ")") : " | <a href=\"/wiki/Special:Contributions/" + encoded.user + "\" target=\"_blank\">contribs</a>" + (isSysop ? " | <a href=\"/wiki/Special:Block/" + encoded.user + "\" target=\"_blank\">block</a>)" : ")"))

                + (summary ? " <span class=\"comment\">(" + this.formatSummary(summary, title) + ")</span>" : "")

                + (isSysop || isRollbacker ? " <span class=\"mw-rollback-link\">[<a href=\"" + mw.config.get('wgScript') + "?title=" + encoded.title + "&action=rollback&from=" + encoded.user + "&token=" + encoded.token + "\" target=\"_blank\">rollback</a>]</span>" : "") + "</li>";

            revidspages.indexOf(info.title)] = revision.revid;

            if(alertOnUpdate) alert("Updates encountered");

        }

    }

    delete req;

}



$(function() {

    if(mw.config.get('wgCanonicalSpecialPageName') == "Watchlist" && document.title == "My watchlist - Wikipedia, the free encyclopedia") { //document.title is included to catch things such as editing the raw watchlist.

        mw.util.addPortletLink("p-cactions", "javascript:watchlistUpdate.init()", "auto-update", "ca-watchlistupdate", "Automatically reports changes to pages in your watchlist");

    }

});