SwiftPluginExample.swift

/* We create a class that inherits from NSObject so we need Foundation. */
import Foundation

/* As Textual creates a new instance of our primary class when the plugin
 loads, it must inherit NSObject to allow proper initialization. */
/* THOPluginProtocol is the protocol available for plugin specific callbacks.
 It is appended to our new class object to inform Swift that we conform to it.
 Methods that you override must be declared as Objective-C or Textual wont see
 that they exist and not call out to them. */

@objc
class TPI_SwiftPluginExample: NSObject, THOPluginProtocol
{
	@objc
	let subscribedServerInputCommands = ["privmsg", "notice"]

	@objc
	func didReceiveServerInput(_ inputObject: THOPluginDidReceiveServerInputConcreteObject, on client: IRCClient)
	{
		/* Swift provides a very powerful switch statement so
		 it is easier to use that for identifying commands than
		 using an if statement if more than the two are added. */
		switch (inputObject.messageCommand) {
			case "PRIVMSG":
				handleIncomingPrivateMessageCommand(inputObject, on: client)
			case "NOTICE":
				handleIncomingNoticeCommand(inputObject, on: client)
			default:
				return
		}
	}

	func handleIncomingPrivateMessageCommand(_ inputObject: THOPluginDidReceiveServerInputConcreteObject, on client: IRCClient)
	{
		/* Get message sequence of incoming message. */
		let messageReceived = inputObject.messageSequence

		let messageParamaters = inputObject.messageParamaters

		/* Get channel that message was sent from. */
		/* The first paramater of the PRIVMSG command is always
		 the channel the message was targetted to. */
		let senderChannel = client.findChannel(messageParamaters[0])

		/* Do not accept private messages. */
		if (senderChannel?.isChannel != true) {
			return
		}

		/* Get sender of message. */
		let messageSender = inputObject.senderNickname

		/* Ignore this user, he's kind of a jerk. :-( */
		if messageSender.hasPrefix("Alex") {
			return
		}

		/* Compare it against a specific value. */
		if (messageReceived == "do you know what time it is?" ||
			messageReceived == "does anybody know what time it is?")
		{
			/* Format message. */
			let formattedString = ("\(messageSender), the time where I am is: \(formattedDateTimeString())")

			/* Invoke the client on the main thread when sending. */
			performBlock(onMainThread: {
				client.sendPrivmsg(formattedString, to: senderChannel!)
			})
		}
	}

	func handleIncomingNoticeCommand(_ inputObject: THOPluginDidReceiveServerInputConcreteObject, on client: IRCClient)
	{
		// Not implemented
	}

	/* Support a new command in text field. */
	@objc
	let subscribedUserInputCommands = ["datetime"]

	@objc
	func userInputCommandInvoked(on client: IRCClient, command commandString: String, messageString: String)
	{
		guard let selectedChannel = masterController().mainWindow.selectedChannel else {
			return
		}

		let formattedString = ("The current time is: \(formattedDateTimeString())")

		performBlock(onMainThread: {
			client.sendPrivmsg(formattedString, to: selectedChannel)
		})
	}

	/* Helper functions. */
	func formattedDateTimeString() -> String
	{
		let dateFormatter = DateFormatter()
		
		dateFormatter.dateStyle = .full
		dateFormatter.timeStyle = .full
		
		let formattedDate = dateFormatter.string(from: Date())
		
		return formattedDate
	}
}