How to set a cooldown using a Config?

So I am trying to set a cooldown for a command, but instead of using a regular HashMap I need to use the config, so the cooldown still remains upon reloads.

I have tried checking if a cooldown is existant and then sending a player a message with the remaining cooldown time, but the time left goes up by 1 every second instead of going down and is negative instead of positive: Example: http://prntscr.com/38gks4


Snippet of code:

Code:java

                if (plugin.getConfig().getString("Cooldowns.PvPKit." + p.getName()) != null) {
 
                    long s = plugin.getConfig().getLong("Cooldowns.PvPKit." + p.getName());
                    long secondsLeft = s / 1000L + 3600 - System.currentTimeMillis() / 1000L;
 
                    if (s < (System.currentTimeMillis() - 3600L * 1000)) {
 
                        if (secondsLeft == 3600L) {
 
                            p.sendMessage(ChatColor.AQUA + "You cannot use the pvp kit for an hour!");
 
                        } else {
 
                            p.sendMessage(ChatColor.AQUA + "You cannot use the " + ChatColor.YELLOW + "PvP" + ChatColor.AQUA + " kit for another " +
                            ChatColor.YELLOW + plugin.methods.millisToReadable(p, secondsLeft, (int)s) +
                            ChatColor.AQUA + ".");
 
                        }
 
                    }
 
                } 

Any help is appreciated. Thanks.

Didn't want to double post and break formatting, but here's how I am setting the cooldown:

Code:

plugin.getConfig().set("Cooldowns.PvPKit." + p.getName(), Long.valueOf(System.currentTimeMillis()));
plugin.saveConfig();

N3rdFall
This plugin was intended to spawn a Kit, that can only be used every hour. Therefore if the plugin is disabled the kit will be accessibly again.

I also need to understand how this will work so I can use it for a custom tempbanning system.

N3rdFall Thanks but I'm already aware on how to use setters and getters in Configuration files.

What I'm trying to do is compare a long value to the Systems current time milliseconds (effectively a cooldown)

EDIT by Moderator: merged posts, please use the edit button instead of double posting.