// ==UserScript==
// @name     FB: Full Timestamps 2018
// @match    https://www.facebook.com/*
// @match    https://*.facebook.com/*
// @match    http://www.facebook.com/*
// @match    http://*.facebook.com/*
// @run-at   document-start
// @grant    GM_addStyle
// @author   wOxxOm & JZersche
// @require  https://greasyfork.org/scripts/12228/code/setMutationHandler.js
// @ require  http://momentjs.com/downloads/moment.min.js
// @version 2.5E2
// @namespace https://greasyfork.org/users/95175
// @description Shows full timestamps on Facebook posts
// @downloadURL none
// ==/UserScript==

var options = { weekday: 'long', year: 'numeric', month: 'numeric', day: '2-digit' };

GM_addStyle(
    '.full-timestamp { opacity: 0.85; color: #09f; }' +
    '.full-timestamp:hover { opacity: 1.0; }' +
    '.full-timestamp:before { content: ""; }' +
    '.full-timestamp:after  { content: ""; }' +
    '.timestampContent {display: none; }'
);

// process the already loaded portion of the page if any
expandDates(document.querySelectorAll('abbr[data-utime]'));

// process the stuff added from now on
setMutationHandler(document, 'abbr[data-utime]', expandDates);

function expandDates(nodes) {
    for (var i = 0, abbr; (abbr = nodes[i++]); ) {
        if (abbr.querySelector('.full-timestamp')) {
            // already processed
            continue;
        }
        abbr.insertAdjacentHTML('beforeend', '<span class="full-timestamp">' + abbr.title.substr(11, abbr.title.substr.length0).replace('am', ':').replace('pm', ':') + (moment(new Date(abbr.dataset.utime * 1000)).format('ssa') +
        ' on ' + abbr.title.substr(0,10)

        .replace('at', '')

        .replace('Sunday,', '')
        .replace('Monday,', '')
        .replace('Tuesday,', '')
        .replace('Wednesday,', '')
        .replace('Thursday,', '')
        .replace('Friday,', '')
        .replace('Saturday,', '')

        .replace('2004', '2004').replace('2005', '2005')
        .replace('2006', '2006').replace('2007', '2007')
        .replace('2008', '2008').replace('2009', '2009')
        .replace('2010', '2010').replace('2011', '2011')
        .replace('2012', '2012').replace('2013', '2013')
        .replace('2014', '2014').replace('2015', '2015')
        .replace('2016', '2016').replace('2017', '2017')
        .replace('2018', '2018').replace('2019', '2019')
        .replace('2020', '2020').replace('2021', '2021').replace('ch 4', 'xxx') +

        (moment(new Date(abbr.dataset.utime * 1000)).format(' [UTC]Z '))));
    }
}