// Vimperator plugin: "Update Twitter"
// Last Change: 11-Nov-2008. Jan 2008
// License: Creative Commons
// Maintainer: Trapezoid <trapezoid.g@gmail.com> - http://unsigned.g.hatena.ne.jp/Trapezoid
//
// The script allows you to update Twitter status from Vimperator 0.6.*.
//
// Commands:
//  :twitter some thing text
//      post "some thing text" to twitter.
//  :twitter! someone
//      show someone's statuses.
//  :twitter!? someword
//      show search result of 'someword' from "http://twitter.1x1.jp".
//  :twitter!@
//      show replies.
//  :twitter!+ someone
//      fav someone's last status..
//  :twitter!- someone
//      un-fav someone's last status..

(function(){
    var passwordManager = Cc["@mozilla.org/login-manager;1"].getService(Ci.nsILoginManager);
    var evalFunc = window.eval;
    try {
        var sandbox = new Components.utils.Sandbox(window);
        if (Components.utils.evalInSandbox("true", sandbox) === true) {
            evalFunc = function(text) {
                return Components.utils.evalInSandbox(text, sandbox);
            }
        }
    } catch(e) { liberator.log('warning: twitter.js is working with unsafe sandbox.'); }

    function sprintf(format){
        var i = 1, re = /%s/, result = "" + format;
        while (re.test(result) && i < arguments.length) result = result.replace(re, arguments[i++]);
        return result;
    }
    function sayTwitter(username, password, stat){
        var xhr = new XMLHttpRequest();
        xhr.open("POST", "http://twitter.com/statuses/update.json", false, username, password);
        xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
        xhr.send("status=" + encodeURIComponent(stat) + "&source=Vimperator");
        liberator.echo("[Twitter] Your post " + '"' + stat + '" (' + stat.length + " characters) was sent. " );
    }
    function favTwitter(username, password, user){
        var xhr = new XMLHttpRequest();
        xhr.open("POST", "http://twitter.com/statuses/user_timeline/" + user + ".json?count=1", false, username, password);
        xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
        xhr.send(null);
        xhr.open("POST", "http://twitter.com/favourings/create/" + window.eval(xhr.responseText)[0].id, false, username, password);
        xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
        xhr.send(null);
    }
    function unfavTwitter(username, password, user){
        var xhr = new XMLHttpRequest();
        xhr.open("POST", "http://twitter.com/statuses/user_timeline/" + user + ".json?count=1", false, username, password);
        xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
        xhr.send(null);
        xhr.open("POST", "http://twitter.com/favourings/destroy/" + window.eval(xhr.responseText)[0].id, false, username, password);
        xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
        xhr.send(null);
    }
    function showTwitterReply(username, password){
        var xhr = new XMLHttpRequest();
        xhr.open("POST", "http://twitter.com/statuses/replies.json", false, username, password);
        xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
        xhr.send(null);
        var statuses = evalFunc(xhr.responseText);

        var html = <style type="text/css"><![CDATA[
            span.twitter.entry-content a { text-decoration: none; }
            img.twitter.photo { border; 0px; width: 16px; height: 16px; vertical-align: baseline; }
        ]]></style>.toSource()
                   .replace(/(?:\r?\n|\r)[ \t]*/g, " ") +
            statuses.map(function(status)
                <>
                    <img src={status.user.profile_image_url}
                         alt={status.user.screen_name}
                         title={status.user.screen_name}
                         class="twitter photo"/>
                    <strong>{status.user.name}&#x202C;</strong>
                </>.toSource()
                   .replace(/(?:\r?\n|\r)[ \t]*/g, " ") +
                    sprintf(': <span class="twitter entry-content">%s&#x202C;</span>', status.text))
                        .join("<br/>");

        //liberator.log(html);
        liberator.echo(html, true);
    }
    function showFollowersStatus(username, password, target){
        var xhr = new XMLHttpRequest();
        var endPoint = target ? "http://twitter.com/statuses/user_timeline/" + target + ".json"
            : "http://twitter.com/statuses/friends_timeline.json";
        xhr.open("POST", endPoint, false, username, password);
        // for debug
        //xhr.open("POST", "http://twitter.com/statuses/user_timeline/otsune.json", false, username, password);
        xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
        xhr.send(null);
        var statuses = evalFunc(xhr.responseText) || [];

        var html = <style type="text/css"><![CDATA[
            span.twitter.entry-content a { text-decoration: none; }
            img.twitter.photo { border; 0px; width: 16px; height: 16px; vertical-align: baseline; margin: 1px; }
        ]]></style>.toSource()
                   .replace(/(?:\r?\n|\r)[ \t]*/g, " ") +
            statuses.map(function(status)
                <>
                    <img src={status.user.profile_image_url}
                         alt={status.user.screen_name}
                         title={status.user.screen_name}
                         class="twitter photo"/>
                    <strong>{status.user.name}&#x202C;</strong>
                    : <span class="twitter entry-content">{status.text}</span>
                </>.toSource()
                   .replace(/(?:\r?\n|\r)[ \t]*/g, " "))
                        .join("<br/>");

        //liberator.log(html);
        liberator.echo(html, true);
    }
    function showTwitterSearchResult(word){
        var xhr = new XMLHttpRequest();
        xhr.open("GET", "http://twitter.1x1.jp/rss/search/?keyword=" + encodeURIComponent(word) + "&text=1", false);
        xhr.send(null);
        var items = xhr.responseXML.getElementsByTagName('item');
        var html = <style type="text/css"><![CDATA[
            span.twitter.entry-content a { text-decoration: none; }
        ]]></style>.toSource()
            .replace(/(?:\r?\n|\r)[ \t]*/g, " ");
        for (var n = 0; n < items.length; n++)
            html += <>
                <strong>{items[n].getElementsByTagName('title')[0].textContent}&#x202C;</strong>
                : <span class="twitter entry-content">{items[n].getElementsByTagName('description')[0].textContent}&#x202C;</span>

                <br />
            </>.toSource()
                .replace(/(?:\r?\n|\r)[ \t]*/g, " ");
        liberator.echo(html, true);
    }
    liberator.modules.commands.addUserCommand(["twitter"], "Change Twitter status",
        function(arg, special){
            var password;
            var username;
            try {
                var logins = passwordManager.findLogins({}, "http://twitter.com", "https://twitter.com", null);
                if (logins.length)
                    [username, password] = [logins[0].username, logins[0].password];
                else
                    throw "Twitter: account not found";
            }
            catch (ex){
                liberator.echoerr(ex);
            }

            arg = arg.string.replace(/%URL%/g, liberator.modules.buffer.URL)
                .replace(/%TITLE%/g, liberator.modules.buffer.title);

            if (special && arg.match(/^\?\s*(.*)/))
                showTwitterSearchResult(RegExp.$1)
            else
            if (special && arg.match(/^\+\s*(.*)/))
                favTwitter(username, password, RegExp.$1)
            else
            if (special && arg.match(/^\-\s*(.*)/))
                unfavTwitter(username, password, RegExp.$1)
            else
            if (special && arg.match(/^@/))
                showTwitterReply(username, password)
            else
            if (special || arg.length == 0)
                showFollowersStatus(username, password, arg)
            else
                sayTwitter(username, password, arg);
        },{
            bang: true
        }
    );
})();
// vim:sw=4 ts=4 et: