//***********************************************
// IceKarma's WikiLinks script for ChatZilla
// Version 1.2
//   1.2 by James Ross: fix the normal links by shunting the
//       word-hyphenator as well.
// Version 2.0
//   2.0 By Glen Mailer:
//        - Converted to new plugin API
//        - Ripped out a whole load of unused stuff
//        - Also Made to fit chatzilla coding pedantics
//   2.1 By Alphax:
//        - Added basic template linking functionality
//   2.2 By Alphax:
//        - subst: and pipes now handled correctly in templates
//   2.3 By pgk:
//        - Added a diff template for wikilinks so [[sdfs+newver+oldver]] will go to the diff
//   2.4 By pgk: 
//        - Convert full difflinks into "--Diff Page--" link to page
//        - Convert full version edit link into "--Version Edit Page--""
// This file is hereby placed by the author into the public domain.

plugin.id = "WikiLinks";

plugin.prefary = [
    ["class", "wiki-link", ""],
];

//
// Plugin management
//

plugin.init = 
function init(glob) {
    plugin.major = 2;
    plugin.minor = 2;
    plugin.version = plugin.major + "." + plugin.minor;
    plugin.description =
    "Munges wiki-links to be clickable in the output window";
    plugin.prefary = plugin.prefary.concat(plugin.prefary);
}

plugin.disable = 
function disable()
{
    client.munger.delRule("wiki-link");
    client.munger.delRule("wiki-template-link");
    client.commandManager.removeCommands(plugin.commands);

    display( plugin.id + " v" + plugin.version + " disabled.");
    
    return true;
}

plugin.enable = 
function enable()
{

    client.munger.addRule("wiki-link", /(\[\[.+?\]\])/, insertWikiLink);
    client.munger.addRule("wiki-template-link", /(\{\{.+?\}\})/, insertWikiTemplateLink);
    client.munger.addRule("wiki-diff-link",/(http:\/\/..\.wikipedia\.org.*?&diff=.*?&oldid=\d*)/, simpleWikiDiffLink);
    client.munger.addRule("wiki-version-edit-link",/(http:\/\/..\.wikipedia\.org.*?&action=edit&oldid=\d*)/, simpleWikiVersionEditLink);
    
    // ugly hack to cause the munger to evaluate wiki-link before these rules
    var tmp1 = client.munger.entries["link"];
    var tmp2 = client.munger.entries["channel-link"];
    var tmp3 = client.munger.entries["word-hyphenator"];
    delete client.munger.entries["link"];
    delete client.munger.entries["channel-link"];
    delete client.munger.entries["word-hyphenator"];
    client.munger.entries["link"] = tmp1;
    client.munger.entries["channel-link"] = tmp2;
    client.munger.entries["word-hyphenator"] = tmp3;

    var cmdary = [
        [ "wiki-links-class", cmdClass, CMD_CONSOLE, "[<className>]" ],
    ];

    plugin.commands = client.commandManager.defineCommands(cmdary);

    display( plugin.id + " v" + plugin.version + " enabled.");
    
    return true;

}


//
// Mungers
//

function simpleWikiDiffLink(matchText, containerTag) {
    var reallink = matchText;
    var anchor = document.createElementNS( "http://www.w3.org/1999/xhtml",
                                           "html:a");
    anchor.setAttribute("href", reallink);
    anchor.setAttribute("class", "chatzilla-link "+plugin.prefs["class"]);

    insertHyphenatedWord("Diff Page", anchor);
    containerTag.appendChild(document.createTextNode("--"));
    containerTag.appendChild(anchor);
    containerTag.appendChild(document.createTextNode("--"));
}

function simpleWikiVersionEditLink(matchText, containerTag) {
    var reallink = matchText;
    var anchor = document.createElementNS( "http://www.w3.org/1999/xhtml",
                                           "html:a");
    anchor.setAttribute("href", reallink);
    anchor.setAttribute("class", "chatzilla-link "+plugin.prefs["class"]);

    insertHyphenatedWord("Version Edit Page", anchor);
    containerTag.appendChild(document.createTextNode("--"));
    containerTag.appendChild(anchor);
    containerTag.appendChild(document.createTextNode("--"));
}



function insertWikiLink(matchText,containerTag) {
    var wikiLink = matchText;
    var linkTitle;

    wikiLink  = matchText.replace(/^\[\[/, "");
    wikiLink  = wikiLink.replace(/\]\]$/, "");
    linkTitle = wikiLink;
    if (linkTitle.match(/\|/)) {
        var ary = linkTitle.match(/^(.*?)\|(.*)$/);
        wikiLink = ary[1];
        linkTitle = ary[2];
    }
    var ary2 = wikiLink.match(/^(.*?)\+(\d+)\+(\d+)$/);
    if (ary2) {
         ary2[1] = escape(ary2[1].replace(/ /g, "_"));
         wikiLink="http://en.wikipedia.org/w/index.php?title="+ary2[1]+"&diff="+ary2[2]+"&oldid="+ary2[3];
    }
    else
    {
         wikiLink = escape(wikiLink.replace(/ /g, "_"));
         wikiLink = "http://en.wikipedia.org/wiki/"+wikiLink;
    }
    
    var anchor = document.createElementNS( "http://www.w3.org/1999/xhtml",
                                           "html:a");
    anchor.setAttribute("href", wikiLink);
    anchor.setAttribute("class", "chatzilla-link "+plugin.prefs["class"]);

    insertHyphenatedWord(linkTitle, anchor);
    containerTag.appendChild(document.createTextNode("[["));
    containerTag.appendChild(anchor);
    containerTag.appendChild(document.createTextNode("]]"));
}

function insertWikiTemplateLink(matchText,containerTag) {
    var wikiLink = matchText;
    var linkTitle;

    wikiLink  = matchText.replace(/^\{\{/, "");
    wikiLink  = wikiLink.replace(/\}\}$/, "");
    linkTitle = wikiLink;
    if (linkTitle.match(/^subst:/))
    {
        var ary = linkTitle.match(/^(subst:)(.*)$/);
        wikiLink = ary[2];
    }
    if (linkTitle.match(/\|/))
    {
        if(linkTitle.match(/^subst:/))
        {
            var ary = linkTitle.match(/^(subst:)(.*?)\|(.*)$/);
            wikiLink = ary[2];
        }
        else
        {
            var ary = linkTitle.match(/^(.*?)\|(.*)$/);
            wikiLink = ary[1];
        }
    }
    wikiLink = escape(wikiLink.replace(/ /g, "_"));

    var anchor = document.createElementNS( "http://www.w3.org/1999/xhtml",
                                           "html:a");
    anchor.setAttribute("href", "http://en.wikipedia.org/wiki/Template:" + wikiLink);
    anchor.setAttribute("class", "chatzilla-link "+plugin.prefs["class"]);

    insertHyphenatedWord(linkTitle, anchor);
    containerTag.appendChild(document.createTextNode("{{"));
    containerTag.appendChild(anchor);
    containerTag.appendChild(document.createTextNode("}}"));
}

//
// Commands
//

function cmdClass(e) {
    if ( null != e.linkclass )
        plugin.prefs["class"] = e.linkclass;
    display( "Current value: " + plugin.prefs["class"] );
}