#pragma once

template <typename MessageIdType, typename MessageBase, typename MessageHandler>
void MessageDispatcher<MessageIdType, MessageBase, MessageHandler>::RegisterHandler(MessageIdType a_MessageType, const std::shared_ptr<MessageHandler>& a_Handler) {
	auto found = std::find(m_Handlers[a_MessageType].begin(), m_Handlers[a_MessageType].end(), a_Handler);
	if (found == m_Handlers[a_MessageType].end())
		m_Handlers[a_MessageType].push_back(a_Handler);
}

template <typename MessageIdType, typename MessageBase, typename MessageHandler>
void MessageDispatcher<MessageIdType, MessageBase, MessageHandler>::UnregisterHandler(MessageIdType a_MessageType, const std::shared_ptr<MessageHandler>& a_Handler) {
	auto found = std::find(m_Handlers[a_MessageType].begin(), m_Handlers[a_MessageType].end(), a_Handler);
	if (found != m_Handlers[a_MessageType].end())
		m_Handlers[a_MessageType].erase(found);
}

template <typename MessageIdType, typename MessageBase, typename MessageHandler>
void MessageDispatcher<MessageIdType, MessageBase, MessageHandler>::UnregisterHandler(const std::shared_ptr<MessageHandler>& a_Handler) {
	for (auto& pair : m_Handlers) {
		if (pair.second.empty())
			continue;

		MessageIdType type = pair.first;

		m_Handlers[type].erase(std::remove(m_Handlers[type].begin(), m_Handlers[type].end(), a_Handler), m_Handlers[type].end());
	}
}

template <typename MessageIdType, typename MessageBase, typename MessageHandler>
void MessageDispatcher<MessageIdType, MessageBase, MessageHandler>::Dispatch(const MessageBase& a_Message) {
	MessageIdType type = a_Message.GetId();
	for (auto& handler : m_Handlers[type])
		a_Message.Dispatch(*handler);
}