find-notif-date-part-13.js

function findNotifDate(date_notified = "2021-11-05 15:00:00") {
    /**
    * @ findNotifDate : Finds the Date Difference of a Notification
    * @ date_notified : The notification date
    **/
    const date_sent_tmp = new Date(date_notified);

    //Check for timestamps
    if(date_notified.indexOf('-') != -1){
         var date_sent = date_sent_tmp.getTime();
    }else{
         var date_sent = date_notified;
    }

    const date_now = new Date();
    //current timestamp
    var today = date_now.getTime(); 

    //Subtract the timestamps
    var calc = new Date(today - date_sent);

    //Prevent Extra 1 Hour
    calc.setHours( calc.getUTCHours() +0);

    //Make our result readable
    var calcDate = calc.getDate()+'-'+(calc.getMonth()+1)+'-'+calc.getFullYear();
    var calcTime = calc.getHours()+':'+calc.getMinutes()+':'+calc.getSeconds();

    //Get How many days, months and years that has passed
    var date_passed = calcDate.split("-");
    var time_passed = calcTime.split(":");

     if(!(date_passed.includes('1-1-1970'))) {

        var days_passed = ((parseInt(date_passed[0]) - 1) != 0 ) ? 
         parseInt(date_passed[0]) - 1 : null;
        var months_passed = ((parseInt(date_passed[1]) - 1) != 0 )? 
         parseInt(date_passed[1]) - 1 : null;
        var years_passed =  ((parseInt(date_passed[2]) - 1970) != 0) ?
         parseInt(date_passed[2]) - 1970 : null;

    }else{
        var days_passed = null;
        var months_passed = null;
        var years_passed =  null;
    }

    var hours_passed = parseInt(time_passed[0]);
    var mins_passed = parseInt(time_passed[1]);
    var secs_passed = parseInt(time_passed[2]); 

    //Set up your Custom Text output here
    const s = ["sec ago", "secs ago"]; //seconds
    const m = ["min", "sec ago", "mins", "secs ago"]; //minutes
    const h = ["hr", "min ago", "hrs", "mins ago"]; //hours
    const d = ["day", "hr ago", "days", "hrs ago"]; //days
    const M = ["month", "day ago", "months", "days ago"]; //months
    const y = ["year", "month ago", "years", "months ago"]; //years

    var ret, retA, retB;

        if (!(days_passed) && !(months_passed) && !(years_passed)
        && !(hours_passed) && !(mins_passed)) {

            ret = (secs_passed == 1) ? secs_passed +' '+ s[0] : secs_passed +' '+ s[1];

        }else if (!(days_passed) && !(months_passed) && !(years_passed)
        && !(hours_passed)) {

            retA = (mins_passed == 1) ? mins_passed +' '+ m[0] : mins_passed +' '+ m[2];
            retB = (secs_passed == 1) ?  secs_passed +' '+m[1] : secs_passed +' '+m[3];

            ret = retA+' '+retB;


        }else if (!(days_passed) && !(months_passed) && !(years_passed)){

            retA = (hours_passed == 1) ? hours_passed +' '+ h[0] : hours_passed +' '+ h[2];
            retB = (mins_passed == 1) ?  mins_passed +' '+ h[1] : mins_passed +' '+ h[3];

            ret = retA+' '+retB;    

        }else if (!(years_passed) && !(months_passed)) {
            retA = (days_passed == 1) ? days_passed +' '+ d[0] :  days_passed +' '+ d[2];
            retB = (hours_passed == 1) ? hours_passed + ' '+d[1] : hours_passed + ' '+d[3];

            ret = retA+' '+retB;

        }else if (!(years_passed)) {

            retA = (months_passed == 1) ? months_passed +' '+ M[0] : months_passed +' '+ M[2];
            retB = (days_passed == 1) ? days_passed + ' '+M[1] : days_passed + ' '+M[3];

            ret = retA+' '+retB;
        }else{
            retA = (years_passed == 1) ? years_passed +' '+ y[0] : years_passed +' '+ y[2];
            retB = (months_passed == 1) ? months_passed + ' '+y[1] : months_passed + ' '+y[3];

            ret = retA+' '+retB;
        }

    //Check if return contains a negative value
    if(ret.includes('-')){
        ret += " ( TIME ERROR )-> Invalid Date Provided!";
    }

    return(ret);
}