StackExchange sites - convert dates to local timezone

Converts dates to your local timezone
Verzia zo dňa 15.12.2015. Pozri najnovšiu verziu.
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// ==UserScript==
// @name        StackExchange sites - convert dates to local timezone
// @namespace   darkred
// @description Converts dates to your local timezone
// @match       *://*.stackoverflow.com/*
// @match       *://*.stackexchange.com/*
// @match       *://*.superuser.com/*
// @match       *://*.stackapps.com/*
// @match       *://*.askubuntu.com/*
// @match       *://*.mathoverflow.net/*
// @match       *://*.serverfault.com/*
// @version     1
// @grant       none
// @require     https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.10.6/moment-with-locales.min.js
// @require     https://cdnjs.cloudflare.com/ajax/libs/moment-timezone/0.4.1/moment-timezone-with-data.min.js
// @require     https://cdnjs.cloudflare.com/ajax/libs/jstimezonedetect/1.0.6/jstz.min.js
// ==/UserScript==



var dates = document.getElementsByClassName('relativetime');


// tooltip with added timezone: "2015-12-14 14:11:13 +0000"
function toTimeZone(time, zone) {
    var format1 = ('YYYY-MM-DD HH:mm:ss Z');
    var format2 = ('YYYY-MM-DD HH:mm:ss');
    return moment(time, format1).tz(zone).format(format2);
}


function getLocalTimezone(){
    var tz = jstz.determine();    // Determines the time zone of the browser client
    return tz.name();             // Returns the name of the time zone eg "Europe/Berlin"
}


var localTimezone = getLocalTimezone();


function convertTitleDates() {
    var temp;


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

        // "2015-12-14 14:11:13Z"   (the default tooltip)
        temp = dates[i].title;
        temp = temp.substring(0, temp.length - 1);
        temp += ' +0000';

        var format0 = ('YYYY-MM-DD HH:mm:ss Z');

        if (moment(temp, format0, true).isValid()) {

            dates[i].title = toTimeZone(temp, localTimezone);


            // 2015-12-08 10:38:53
            // Dec 8 at 10:38

            var regex2 = /(.*at\ ).*/;
            if (dates[i].innerHTML.match(regex2)) {

                var title = dates[i].title;
                var month = title.substring(8, 10);   // the '8'
                var time = title.substring(11, 16);   // the '10:38'

                if (month.substring(0, 1) === '0') {  // if the 1st digit in month is '0' then dont' use it in the replacing of datetext
                    month = month.substring(1, 2);
                }

                var datetext = dates[i].innerHTML;
                var dateTextArray = datetext.split(' ');
                dateTextArray[1] = month;
                dateTextArray[3] = time;

                dates[i].innerHTML = dateTextArray.join(' ');

            }


        }
    }

}



convertTitleDates();



new MutationObserver(function(mutations) {
    mutations.forEach(function(mutation) {
        console.log(mutation.type);
        console.log('CHANGE');
        convertTitleDates();
    });
}).observe(
    document.querySelector('#mainbar'), {           // monitor #mainbar for changes
        // attributes: true,
        childList: true,
        // characterData: true,
    }
);



new MutationObserver(function(mutations) {
    mutations.forEach(function(mutation) {
        console.log(mutation.type);
        console.log('CHANGE');
        convertTitleDates();
    });
}).observe(
    document.querySelector('#questions'), {         // monitor #questions for changes
        // attributes: true,
        childList: true,
        // characterData: true,
    }
);