/*jslint rhino: true, forin: true, onevar: false, browser: true, evil: true, laxbreak: true, undef: true, nomen: true, eqeqeq: true, bitwise: true, maxerr: 1000, immed: false, white: false, plusplus: false, regexp: false, undef: false */
// Released under the MIT/X11 license
// http://www.opensource.org/licenses/mit-license.php
//
// Links to read through
// http://ehsanakhgari.org/blog/2010-01-07/bugzilla-tweaks-enhanced
// http://hg.mozilla.org/users/ehsan.akhgari_gmail.com/extensions/file/tip/bugzillatweaks
// http://hg.mozilla.org/users/ehsan.akhgari_gmail.com/extensions/file/ecfa0f028b81/bugzillatweaks/lib/main.js
// http://hg.mozilla.org/users/avarma_mozilla.com/atul-packages/file/42ac1e99a107/packages\
//     /facebook-acquaintances/lib/main.js#l11
// http://ehsanakhgari.org/blog/2010-05-31/my-experience-jetpack-sdk#comment-1253
//
"use strict";
var util = require("util");
var logger = require("logger");
var myStorage = require("simple-storage").storage;
var browser = require("tab-browser");
var selfMod = require("self");
var Request = require("request").Request;
var preferences = require("preferences-service");
var BTSPrefNS = require("bzpage").BTSPrefNS;
// Use my JSON for now before it is fixed for general public
var JSONURLDefault = "https://fedorahosted.org/released"+
    "/bugzilla-triage-scripts/Config_data.json";

var config = {};
(function (){
    var matchesAll = JSON.parse(selfMod.data.load("matches.json"));
    config.matches = matchesAll.matches;
    config.skipMatches = matchesAll.skipMatches;
})();

function isOurPage(window, matchingURLs) {
    var url = window.location.href;

    // like ["regexp-url1", "regexp-url2"]
    return matchingURLs.some(function (element,i,a) {
        return new RegExp(element).test(url);
    });
}

/**
 *
 */
function skipThisPage(doc) {
    var stemURL = "https://HOSTNAME/show_bug.cgi?id=";
    var titleStr = doc.getElementsByTagName("title")[0].textContent;
    var REArr = new RegExp("[bB]ug\\s+([0-9]+)").exec(titleStr);
    var hostname = doc.location.hostname;
    if (REArr) {
        var bugNo = REArr[1];
        var emailsSent = doc.
        querySelector("#bugzilla-body > dl:nth-of-type(1)").textContent;
        emailsSent = emailsSent.replace(/^(\s*)$/mg,"");
        util.notification(emailsSent);
        doc.location = stemURL.replace("HOSTNAME",hostname) + bugNo;
    }
}

function initialize(callback) {
    var prefName = BTSPrefNS+"JSONURL";
    var urlStr = "";

    if (preferences.isSet(prefName)) {
        urlStr = preferences.get(prefName);
    } else {
        urlStr = JSONURLDefault;
        preferences.set(prefName, JSONURLDefault);
    }

    // Randomize URL to avoid caching
    // TODO see https://fedorahosted.org/bugzilla-triage-scripts/ticket/21
    // for more thorough discussion and possible further improvement
    urlStr += (urlStr.match(/\?/) == null ? "?" : "&") + (new Date()).getTime();

    Request({
        url: urlStr,
        onComplete: function () {
            config.gJSONData = this.response.json;

            // Get additional tables
            if ("downloadJSON" in config.gJSONData.configData) {
                var URLsList = config.gJSONData.configData.downloadJSON;
                var dwnldObj = "";
                URLsList.forEach(function (arr) {
                    var title = arr[0];
                    var url = arr[1];
                    Request({
                        url: url,
                        onComplete: function() {
                            config.gJSONData.constantData[title] = this.response.json;
                        }
                    }).get();
                }, this);
            }

            if (!myStorage.logs) {
                myStorage.logs = {};
            }

            var logConstructor = logger.Logger;
            config.logger = new logConstructor(myStorage.logs,
                JSON.parse(selfMod.data.load("bugzillalabelAbbreviations.json")));

            callback(config);
        }
    }).get();
}

exports.main = function main(options, callbacks) {
    initialize(function (config) {
        browser.whenContentLoaded(
            function(window) {
                // is this good for anything?
                if ("window" in window) { window = window.window; }

                var construct = {};
                var bzType = config.gJSONData.configData.objectStyle;
                if (bzType === "RH") {
                    construct = require("rhbzpage").RHBugzillaPage;
                } else if (bzType === "MoFo") {
                    construct = require("mozillabzpage").MozillaBugzilla;
                }
                if (isOurPage(window, config.matches)) {
                    var curPage = new construct(window, config);
                } else if (isOurPage(window, config.skipMatches)) {
                    skipThisPage(window.document);
                }
            }
        );
    });
};