Mod Quick Reply to Private Message

This patch was provided by @shermdog https://github.com/shermdog for v0.8.6

I have added the function /r to reply to the last private message received.

As with most of my patches it's a little quick and dirty.

lib/class/CustomAJAXChat.php

	function parseCustomCommands($text, $textParts) {
		global $db_prefix;
			case '/r':
				if(count($textParts) == 1) {
					$this->insertChatBotMessage(
						$this->getPrivateMessageID(),
						'/error MissingText'
					);
					return true;
				} else {
					if($this->isAllowedToSendPrivateMessage()) {
						$uid = $this->getUserID();
						
						$sql = 'SELECT
									userID, userName
							FROM
								'.$db_prefix.'ajaxchat_messages
							WHERE
								channel = '.$this->getPrivateMessageID($uid).'
								AND NOT (userid = '.$uid.' OR userid = '.$this->getConfig('chatBotID').')
								AND dateTime > DATE(NOW()-INTERVAL 4 HOUR)
							ORDER BY
								id
								DESC
							LIMIT 1;';							

						// Create a new SQL query:
						$result = $this->db->sqlQuery($sql);
						
						// Stop if an error occurs:
						if($result->error()) {
							$this->insertChatBotMessage(
							$this->getPrivateMessageID(),
							'/error Database '.$result->getError()
							);
							return true;
						}
						if($result->numRows() > 0){
							while($row = $result->fetch()) {	
								$userID = $row['userID'];
								$userName = $row['userName'];
							}
							// Copy of private message to current User:
							$this->insertCustomMessage(
								$this->getUserID(),
								$this->getUserName(),
								$this->getUserRole(),
								$this->getPrivateMessageID(),
								'/privmsgto '.$userName.' '.implode(' ', array_slice($textParts, 1))
							);								
							// Private message to requested User:
							$this->insertCustomMessage(
								$uid,
								$this->getUserName(),
								$this->getUserRole(),
								$this->getPrivateMessageID($userID),
								'/privmsg '.implode(' ', array_slice($textParts, 1))
							);		
							return true;
						}	
						else {
							$this->insertChatBotMessage(
								$this->getPrivateMessageID(),
								'/error MissingUserName'
							);
							return true;
						}						
					}
					else {
						$this->insertChatBotMessage(
							$this->getPrivateMessageID(),
							'/error PrivateMessageNotAllowed'
						);
						return true;
					}						
				} 							
			
			default:
				return false;
		}
	}

js/chat.js - needed to update to retain style

	assignFontColorToCommandMessage: function(text, textParts) {
		switch(textParts[0]) {
			case '/msg':
			case '/describe':
				if(textParts.length > 2) {
					return	textParts[0]+' '+textParts[1]+' '
							+ '[color='+this.settings['fontColor']+']'
							+ textParts.slice(2).join(' ')
							+ '[/color]';
				}
				break;
			case '/me':
			case '/action':
				if(textParts.length > 1) {
					return	textParts[0]+' '
							+ '[color='+this.settings['fontColor']+']'
							+ textParts.slice(1).join(' ')
							+ '[/color]';
				}
				break;
			case '/r':
				if(textParts.length > 1) {
					return	textParts[0]+' '
							+ '[color='+this.settings['fontColor']+']'
							+ textParts.slice(1).join(' ')
							+ '[/color]';
				}
				break;				
		}
		return text;
	},