MessageUpdateEvent

    @EventSubscriber
    public void onMessageUpdateEvent(MessageUpdateEvent event) {
        if (event.getNewMessage().getContent() == null || event.getOldMessage().getContent() == null) {
            return;
        }
        if (event.getNewMessage().getContent().isEmpty() || event.getOldMessage().getContent().isEmpty()) {
            return;
        }
        if (event.getNewMessage().getContent().equals(event.getOldMessage().getContent())) {
            return;
        }
        if (event.getChannel().isPrivate()) {
            return;
        }
        CommandObject command = new CommandObject(event.getMessage());
        IUser ourUser = command.client.getOurUser();
        List<String> logID = command.guildConfig.getChannelIDsByType(Command.CHANNEL_SERVER_LOG);
        List<String> dontLog = command.guildConfig.getChannelIDsByType(Command.CHANNEL_DONT_LOG);
        if (dontLog != null) {
            for (String id : dontLog) {
                if (command.channelSID.equals(id)) {
                    return;
                }
            }
        }
        if (logID != null) {
            String serverLogID = logID.get(0);

            if (command.guildConfig.dontLogBot && command.author.isBot()) {
                return;
            }
            if (event.getMessage() == null) {
                return;
            }
            if (serverLogID != null && serverLogID.equals(command.channelSID) && ourUser.getStringID().equals(command.authorSID)) {
                return;
            }
            if (command.guildConfig.editLogging) {
                //formats how long ago this was.
                String formatted;
                String oldContent;
                String newContent;
                StringBuilder response = new StringBuilder();
                ZonedDateTime oldMessageTime = event.getOldMessage().getTimestamp().atZone(ZoneOffset.UTC);
                ZonedDateTime newMessageTime = event.getNewMessage().getEditedTimestamp().get().atZone(ZoneOffset.UTC);
                int charLimit;
                long difference = newMessageTime.toEpochSecond() - oldMessageTime.toEpochSecond();
                if (command.guildConfig.useTimeStamps) {
                    formatted = "at `" + Utility.formatTimestamp(oldMessageTime) + " - UTC`";
                } else {
                    formatted = "from " + Utility.formatTimeDifference(difference);
                }
                response.append("> **@" + command.authorUserName + "'s** Message " + formatted + " was **Edited** in channel: " + command.channel.mention() + ". ");
                //remove excess text that would cause a max char limit error.
                if (command.message.getContent().isEmpty()) {
                    return;
                }
                if (command.guildConfig.extendEditLog) {
                    charLimit = 900;
                } else {
                    charLimit = 1800;
                }
                if (event.getOldMessage().getContent().length() > charLimit) {
                    oldContent = Utility.unFormatMentions(event.getOldMessage()).substring(0, charLimit) + "...";
                } else {
                    oldContent = Utility.unFormatMentions(event.getOldMessage());
                }
                if (event.getNewMessage().getContent().length() > charLimit) {
                    newContent = Utility.unFormatMentions(event.getNewMessage()).substring(0, charLimit) + "...";
                } else {
                    newContent = Utility.unFormatMentions(event.getNewMessage());
                }
                response.append("**\nMessage's Old Contents:**\n" + oldContent);
                if (command.guildConfig.extendEditLog) {
                    response.append("\n**Message's New Contents:**\n" + newContent);
                }
                Utility.sendLog(response.toString(), command.guildConfig, false);
            }
        }
    }