User:Dudemanfellabra/diffs.js

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This user script seems to have a documentation page at User:Dudemanfellabra/diffs.

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function convertTimestampStringToDate(id) {
    var timestamp = document.getElementById(id).firstChild.firstChild.firstChild.nodeValue;
    var str = /evision as of /g
    str.lastIndex = 0;
    str.test(timestamp)
    var date = timestamp.substring(str.lastIndex)
//All this following bogus crap is because Safari doesn't recognize Wikipedia's date format//
    var str1 = /[A-z]+/
    var str2 = /\d+/g
    var month = date.match(str1)
    var testdate = date.match(str2)
    var hours = testdate[0]
    var minutes = testdate[1]
    var day = testdate[2]
    var year = testdate[3]
    alert(date+'\n'+hours+':'+minutes+' '+month+' '+day+', '+year);
//End Safari madness//
    return new Date(date);
}

function DateSub(Date1,Date2) {
    var timeDifference = Date2 - Date1;
    var minutesAgo = Math.round(timeDifference / 1000 / 60);
    var hoursAgo = 0
    var daysAgo = 0
    var hoursText = 'hour'
    var daysText = 'day'
 
    while (minutesAgo >= 60) {
        minutesAgo = minutesAgo-60;
        hoursAgo++;
    }
 
    while (hoursAgo >= 24) {
        hoursAgo = hoursAgo-24;
        daysAgo++;
    }

    if (hoursAgo!=1)
        hoursText = hoursText + 's';

    if (daysAgo!=1)
        daysText = daysText + 's';
 
    if (daysAgo > 0) {
        if (hoursAgo > 0) {
            if (minutesAgo <=1 ) {
                minutesAgo = daysAgo + ' ' + daysText + ', ' + hoursAgo + ' ' + hoursText;
            }
            else {
                minutesAgo = daysAgo + ' ' + daysText + ', ' + hoursAgo + ' ' + hoursText + ', ' + minutesAgo + ' minutes';
            }
        }
        else {
            if (minutesAgo <=1 ) {
                minutesAgo = daysAgo + ' ' + daysText;
            }
            else {
                minutesAgo = daysAgo + ' ' + daysText + ', ' + minutesAgo + ' minutes';
            }
        }
    }
    else {
        if (hoursAgo > 0) {
            if (minutesAgo <=1 ) {
                minutesAgo = hoursAgo + ' ' + hoursText;
            }
            else {
                minutesAgo = hoursAgo + ' ' + hoursText + ', ' + minutesAgo + ' minutes';
            }
        }
        else {
            if (minutesAgo <=1 ) {
                minutesAgo = 'Less than a minute';
            }
            else {
                minutesAgo = minutesAgo + ' minutes';
            }
        }
    }
    return minutesAgo;
} 
 
function TimeBetweenDiffs() {
 
    if (!document.getElementById('mw-diff-otitle1') || !document.getElementById('mw-diff-ntitle1')) return;
 
    var leftNode = document.getElementById('mw-diff-otitle1');
    var rightNode = document.getElementById('mw-diff-ntitle1');
    var firstDate = convertTimestampStringToDate('mw-diff-otitle1');
    var secondDate = convertTimestampStringToDate('mw-diff-ntitle1');
 
    var minutesAgo = DateSub(firstDate,secondDate);

    var newNode = document.createElement('span');
    newNode.setAttribute('style', 'font-weight:bold; color:red;')
    newNode.appendChild(document.createTextNode('(' + minutesAgo + ' later)'));
    newNode.appendChild(document.createElement('br'));

    rightNode.insertBefore(newNode, rightNode.firstChild);
}

function TimeSinceDiff() {
    if (!document.getElementById('mw-diff-otitle1') || !document.getElementById('mw-diff-ntitle1')) return;
 
    var leftNode = document.getElementById('mw-diff-otitle1');
    var rightNode = document.getElementById('mw-diff-ntitle1');
    var firstDate = convertTimestampStringToDate('mw-diff-otitle1');
    var secondDate = convertTimestampStringToDate('mw-diff-ntitle1');
    var DateNow = new Date();

    var minutesAgo1 = DateSub(firstDate,DateNow);
    var minutesAgo2 = DateSub(secondDate,DateNow);

    leftNode.title=minutesAgo1 + ' ago';
    rightNode.title=minutesAgo2 + ' ago';
}
 
addOnloadHook(TimeSinceDiff);                                  // Adds time since displayed diffs as tooltip
addOnloadHook(TimeBetweenDiffs);                               // Adds time between diffs