#include "message_bus_impl.h"

namespace robotics::v3 {
	message_bus_impl::message_bus_impl() {
	}

	message_bus_impl::~message_bus_impl() {
		map_.clear();
	}

	message_bus_impl* message_bus_impl::instance() {
		static message_bus_impl g_message_bus_impl;
		return &g_message_bus_impl;
	}

	bool message_bus_impl::bind(std::string const& str_topic, std::any const& fn) {
		auto range = map_.equal_range(str_topic);
		if (range.first != range.second)
			return false;
		map_.emplace(str_topic, std::pair(false, fn));
		return true;
	}

	void message_bus_impl::bind_multiple(std::string const& str_topic, std::any const& fn) {
		map_.emplace(str_topic, std::make_pair(true, fn));
	}

	std::vector<std::any> message_bus_impl::find(const std::string& str_topic) {
		std::vector<std::any> result;
		auto range = map_.equal_range(str_topic);
		for (Iterater it = range.first; it != range.second; ++it) {
			result.push_back(it->second.second);
		}
		return result;
	}

	void message_bus_impl::remove(const std::string& str_topic) {
		auto range = map_.equal_range(str_topic);
		map_.erase(range.first, range.second);
	}
}