<?php

require_once('Conversation.class.php');
require_once('Message.class.php');

class Messenger {
	
	private $gchange;
	
	private $users = [];

	private $conversations = [];

	private $latestMessage;

	public function __construct (&$gchange) {

		$this->gchange = $gchange;
	}

	public function addMessages ($msgIn, $msgOut) {

		foreach ($msgIn as $m) {

			if (!isset($this->conversations[$m->pubkey])) {
				
				$this->conversations[$m->pubkey] = new Conversation();
			}

			$msg = new Message($m, 'in');

			$this->conversations[$msg->getPenpalPubkey()]->addMessage($msg);

			$this->feedUserBase($msg->getPenpalPubkey());
		}

		foreach ($msgOut as $m) {
			
			if (!isset($this->conversations[$m->pubkey])) {
				
				$this->conversations[$m->pubkey] = new Conversation();
			}

			$msg = new Message($m, 'out');

			$this->conversations[$m->pubkey]->addMessage($msg);

			$this->feedUserBase($msg->getPenpalPubkey());
		}

		foreach ($this->conversations as $conv) {

			$conv->sortMessages();

			$this->checkIfIsLatestMessage($conv->getLastMessage());
		}
	}

	public function checkIfIsLatestMessage ($msg) {

		if (!isset($this->latestMessage)) {

			$this->latestMessage = $msg;
		
		} else {

			if ($msg->getDate() > $this->getLatestMessage()->getDate()) {

				$this->latestMessage = $msg;
			}

		}
	}

	public function getLatestMessage () {

		return $this->latestMessage;
	}

	public function feedUserBase ($penpalPubkey) {

		if (!isset($users[$penpalPubkey])) {

			$this->users[$penpalPubkey] = $this->gchange->getUser($penpalPubkey);
		}
	}
	public function getConversation ($penpalGchangeId) {

		return $this->conversations[$penpalGchangeId];
	}

	public function getConversations () {

		return $this->conversations;
	}

	public function getUser ($pubkey) {

		return $this->users[$pubkey];
	}

	public function getLastConversation () {

		return array_reverse($this->conversations)[0];
	}
}