#include "Bridge.h"
#include <Logging.h>
#include <functional>
#include <sstream>


namespace ToonBridge {
namespace Toon {

Bridge::Bridge(int port, const ToonSettings& toonSettings, const MQTTSettings& mqttSettings) :
	m_mqttClient(mqttSettings.hostname, mqttSettings.port),
	m_messageHandler(m_mqttClient, mqttSettings.topic),
	m_port(port),
	m_toonSettings(toonSettings),
	m_mqttSettings(mqttSettings)
{
	Start();
}

Bridge::~Bridge()
{
	std::stringstream ss;
	ss << m_mqttSettings.topic << "/BridgeState";

	MQTT::MQTTMessage message;
	message.topic = ss.str();
	message.payload = "Stop";
	m_mqttClient.Send(message);
}

void Bridge::Wait()
{
	m_pHttpServer->Wait();
}

void Bridge::Start()
{
	Http::HttpServer::CallbackMethod httpCallback = std::bind(&Bridge::HttpCallback, this, std::placeholders::_1, std::placeholders::_2);

	m_pHttpServer.reset(new Http::HttpServer(m_port, httpCallback));

	m_pWebSocketSubscription.reset(new WebSocketSubscription(m_toonSettings));
	m_messageHandler.Connect(std::bind(&Bridge::ReconnectCallback, this, m_pWebSocketSubscription.get()));
	m_messageCheckTimer.StartContinuous(300000, static_cast<std::function<void()>>(std::bind(&Bridge::CheckMessageReceived, this)));

	std::stringstream ss;
	ss << m_mqttSettings.topic << "/BridgeState";

	MQTT::MQTTMessage message;
	message.topic = ss.str();
	message.payload = ss.str();
	m_mqttClient.Send(message);
}

Http::HttpServer::HttpReply Bridge::HttpCallback(const std::string& uri, const std::vector<Http::HttpPostData>& postData)
{
	Http::HttpServer::HttpReply reply;
	reply.status = Http::HttpServer::HttpReply::Status::Ok;

	try
	{
		if (postData.size() > 0)
		{
			for (auto& item : postData)
			{
				if (item.name == "data")
					m_messageHandler.HandleMessage(item.value);
			}
		}
	}
	catch (const std::exception& e)
	{
		std::string data;
		for (auto& item : postData)
		{
			if (item.name == "data")
				data = (item.value);
		}
	}

	{
		std::unique_lock<std::mutex> lock(m_mutex);
		m_messageReceived = true;
	}

	return reply;
}

void Bridge::ReconnectCallback(ToonBridge::Toon::WebSocketSubscription* pSubscription)
{
	std::stringstream ss;
	ss << "Bridge::TimeToLiveCallback() - TTL Expired, reconnecting" << std::endl;
	Logging::Log(Logging::Severity::Info, ss.str());

	pSubscription->Reconnect();
}

void Bridge::CheckMessageReceived()
{
	bool messageReceived;
	{
		std::unique_lock<std::mutex> lock(m_mutex);
		messageReceived = m_messageReceived;
		m_messageReceived = false;
	}

	if (!messageReceived)
	{
		std::stringstream ss;
		ss << "Bridge::CheckMessageReceived() - No message received for 5 minutes, reconnecting" << std::endl;
		Logging::Log(Logging::Severity::Info, ss.str());

		m_pWebSocketSubscription->Reconnect();
	}
}

} // namespace Toon
} // namespace ToonBridge