#include "MqttEntity.h"
#include "common/Spdlogger.h"
#include "common/Utils.h"
#include "app/Application.h"
#include "app/AppData.h"
#include "app/Station.h"
#include "app/Device.h"
#include "app/DataStruct.h"

#define TIMEOUT 10000L

bool MqttClient::load(std::string filename)
{
	njson jsonroot;
	bool ret = JSON::load(filename, jsonroot);
	if (!ret)
	{
		spdlog::error("[mqtt] load config file failed, filename={}", filename);
		return false;
	}
	return true;
}


std::map<std::string, TopicInfo> MqttClient::s_mapTopicInfo;

int MqttClient::init(string addr, string clientId, string username, string password)
{
	if (addr.empty())
	{
		return MQTTASYNC_FAILURE;
	}
	if (isConnected)
	{
		return MQTTASYNC_SUCCESS;
	}
	isConnected = false;
	this->addr = addr;
	this->clientId = clientId;

	MQTTAsync_connectOptions option = MQTTAsync_connectOptions_initializer;
	MQTTAsync_message pubmsg = MQTTAsync_message_initializer;
	int rc {0};

	// "tcp://localhost:1883"
	std::string str = "ESS-" + std::to_string(Utils::random(1000, 9999)) + "-" +clientId;
	rc = MQTTAsync_create(&client, addr.c_str(), str.c_str(), MQTTCLIENT_PERSISTENCE_NONE, NULL);
	if (rc != MQTTASYNC_SUCCESS)
	{
		spdlog::error("[mqtt] MQTTAsync_create error: {}", rc);
		return rc;
	}

	MQTTAsync_connectionLost* onConnectionLost = 
		[](void* context, char* cause)
		{
			static_cast<MqttClient*>(context)->onConnectionLost(cause);
		};
	MQTTAsync_messageArrived* onMessageArrived =
		[](void* context, char* topicName, int topicLen, MQTTAsync_message* message)->int 
		{
			return static_cast<MqttClient*>(context)->onMessageArrived(topicName, topicLen, message);
		};
	MQTTAsync_deliveryComplete* onDeliveryComplete =
		[](void* context, MQTTAsync_token token) 
		{
		};


	//设置连接丢失、接受消息的回调函数
	rc = MQTTAsync_setCallbacks(client, this, onConnectionLost, onMessageArrived, onDeliveryComplete);
	if (rc != MQTTASYNC_SUCCESS)
	{
		spdlog::error("[mqtt] MQTTAsync_setCallbacks error");
		this->destory();
		return rc;
	}

	option.keepAliveInterval = 20;
	option.cleansession = 1;
	option.onSuccess = [](void* context, MQTTAsync_successData* resp)  { static_cast<MqttClient*>(context)->onConnectSuccess(resp); };;
	option.onFailure = [](void* context, MQTTAsync_failureData* resp) { static_cast<MqttClient*>(context)->onConnectFaiure(resp); };
	option.context = this;
	option.username = username.c_str();
	option.password = password.c_str();

	//断开重连设置
	option.automaticReconnect = 1;//设置非零，断开自动重连
	option.minRetryInterval = 5; //单位秒，重连间隔次数，每次重新连接失败时，重试间隔都会加倍，直到最大间隔
	option.maxRetryInterval = 60;//单位秒，最大重连尝试间隔

	rc = MQTTAsync_connect(client, &option);
	if (rc != MQTTASYNC_SUCCESS)
	{
		spdlog::error("[mqtt] MQTTAsync_connect error");
		return rc;
	}
	return 0;

	//MQTTAsync_disconnect(client, NULL);
	//MQTTAsync_destroy(&client);
}

void MqttClient::destory()
{
	return;
	if (client)
	{
		MQTTAsync_destroy(&client);
	}
}

struct SubscribInfo
{
	std::function<void(int id)> callback;
};

void MqttClient::subscribe()
{
	MQTTAsync_onSuccess* funcSuccess = [](void* context, MQTTAsync_successData* response)
		{
			spdlog::info("[mqtt] subscribe {} success.", (char*)context);
		};
	MQTTAsync_onFailure* funcFailure = [](void* context, MQTTAsync_failureData* response)
		{
			spdlog::error("[mqtt] subscribe {} failed.", (char*)context);
		};

	MQTTAsync_responseOptions options = MQTTAsync_responseOptions_initializer;
	options.onSuccess = funcSuccess;
	options.onFailure = funcFailure;
	for (auto& item: MqttClient::s_mapTopicInfo)
	{
		if (item.second.enabled)
		{
			std::string topic = "up/json/" + clientId + "/" + item.first;
			options.context = (void*)&item.first;
			int rc = MQTTAsync_subscribe(client, topic.data(), qos, &options);
			if (rc != MQTTASYNC_SUCCESS)
			{
				spdlog::error("[mqtt] subscribe [{},{}] failed, err={}", topic, qos, rc);
			}
			else
			{
				spdlog::info("[mqtt] subscribe [{},{}] ", topic, qos);
			}
		}
	}
}

int MqttClient::publish(std::string topic, std::string text)
{
	if (!client) return 0;

	MQTTAsync_responseOptions options = MQTTAsync_responseOptions_initializer;
	options.onSuccess = [](void* context, MQTTAsync_successData* response) {};
	options.onFailure = [](void* context, MQTTAsync_failureData* response) {};
	options.context = this;

	MQTTAsync_message msg = MQTTAsync_message_initializer;
	msg.qos = this->qos;
	msg.payload = text.data();
	msg.payloadlen = text.size();
	msg.retained = 0;

	std::string topicName = "down/json/" + clientId + "/" + topic;
	int rc = MQTTAsync_sendMessage(client, topicName.c_str(), &msg, &options);
	if (rc == MQTTASYNC_SUCCESS)
	{
		spdlog::info("[mqtt] publish success, topic={}, text={}", topicName, text);
	}
	else
	{
		spdlog::error("[mqtt] publish error, topic={}, text={}", topicName, text);
	}
	return 0;
}

int MqttClient::polling()
{
	if (!isConnected)
	{
		spdlog::error("[mqtt] poll error, mqtt is not connected, clientId={}", clientId);
		return 0;
	}

	njson json;
	json["ts"] = Utils::time();
	json["no"] = 0; // 设备编号

	auto& appdata = Application::data();
	auto station = appdata.getStationByCode(clientId);
	if (!station)
	{
		spdlog::error("[mqtt] poll error, get station NULL, mqtt clientId={}", clientId);
		return 0;
	}

	for (auto& item: MqttClient::s_mapTopicInfo)
	{
		auto& topicInfo = item.second;
		if (topicInfo.polling && topicInfo.enabled)
		{
			std::vector<std::shared_ptr<Device>> vecDevice;
			station->getDeviceByType(topicInfo.deviceType, vecDevice);
			for (auto device: vecDevice)
			{
				json["no"] = Utils::toInt(device->code);
				if (topicInfo.name == "Gateway_YC")
				{
					json["addr"] = {"40001", "40002", "40021", "40038"};
				}
				else
				{
					json["addr"] = njson::array();
				}
				this->publish(topicInfo.name, json.dump());
			}
		}
	}
	return 0;
}

void MqttClient::onConnectionLost(char* cause)
{
	this->isConnected = false;
	//this->destory();
	spdlog::error("MQTT connection lost, cause={}", cause);
}

std::string GetSubStr(std::string c, std::string& str)
{
	std::string v;
	int pos = str.find_first_of("/");
	if (pos != string::npos)
	{
		v = str.substr(0, pos);
		str = str.substr(pos+1);
	}
	else
	{
		v = str;
		str = "";
	}
	return v;
}

// 交付完成回调（可选）
void MqttClient::onDeliveryComplete(MQTTAsync_token token) 
{
	//spdlog::info("MQTT delivery complete, token={}", token);
}

void MqttClient::onConnectSuccess( MQTTAsync_successData* resp)
{
	spdlog::info("[mqtt] connect to {} success, clientId={}.", addr, clientId);
	this->isConnected = true;
	this->subscribe();
}

void MqttClient::onConnectFaiure(MQTTAsync_failureData* resp)
{
	spdlog::error("[mqtt] connect to {} error, clientId={}.", addr, clientId);
	this->isConnected = false;
	this->destory();
}

int MqttClient::onMessageArrived(char* topic, int topicLen, MQTTAsync_message* msg)
{
	std::string topicStr = topic;
	int len = msg->payloadlen;
	std::string payload((const char*)msg->payload, len);


	// <数据方向>/<数据格式>/<厂家ID>/<指合>/<设备标识，上行可选>
	std::string direction = GetSubStr("/", topicStr);
	std::string datatype = GetSubStr("/", topicStr);
	std::string stationNo = GetSubStr("/", topicStr);
	std::string command = GetSubStr("/", topicStr);
	std::string deviceCode = GetSubStr("/", topicStr);

	spdlog::info("[mqtt] <<< message arrived: topic=[{},{}], len={}, payload={}", topic, msg->qos, len, payload);

	njson json;
	bool ret = JSON::parse(payload, json);
	if (!ret)
	{
		spdlog::error("[mqtt] json parse error.");
		return 1;
	}
	auto station = Application::data().getStationByCode(stationNo);
	if (!station)
	{
		spdlog::error("[mqtt] get station error, clientId={}, stationId={}", clientId, stationNo);
		return 1;
	}

	if (command == "Gateway_YC")
	{
		for (auto& item: json.items())
		{
			std::string key = item.key();
			auto& val = item.value();
			if (key == "40001") { station->readGatewayMode(val.get<int>()); }
			else if (key == "40002") { spdlog::info("[mqtt] read register addr: [{}]={}, {}", key, val.dump(), "峰谷时间段"); }
			else if (key == "40021") { spdlog::info("[mqtt] read register addr: [{}]={}, {}", key, val.dump(), "自定时间段"); }
			else if (key == "40038") { spdlog::info("[mqtt] read register addr: [{}]={}, {}", key, val.dump(), "其他参数"); }
		}
	}
	else if (command == "Gateway_YX")
	{
		int cdzStatus = -1;
		int emuStatus = -1;
		JSON::read(json, "cdz", cdzStatus);
		JSON::read(json, "emu", cdzStatus);
		station->readGatewayStatus(cdzStatus, emuStatus);
	}
	else
	{
		ParseArrivedMessage(json, command, station);
	}

	// 必须释放消息内存！
	MQTTAsync_freeMessage(&msg);
	MQTTAsync_free(topic);
	return 1; // 1表示消息已经处理
}


void MqttClient::ParseArrivedMessage(njson& json, string command, std::shared_ptr<Station> station)
{
	std::string stationNo = clientId;

	auto iterTopic = MqttClient::s_mapTopicInfo.find(command);
	if (iterTopic == MqttClient::s_mapTopicInfo.end())
	{
		spdlog::error("[mqtt] get topic info error, clientId={}, stationId={}, command={}", clientId, stationNo, command);
		return;
	}
	TopicInfo& topicInfo = iterTopic->second;

	int deviceNo = -1;
	JSON::read(json, "no", deviceNo);
	auto device = station->getDeviceByType(topicInfo.deviceType, Utils::toStr(deviceNo));
	if (!device)
	{
		spdlog::error("[mqtt] get device info error, clientId={}, stationId={}, command={}", clientId, stationNo, command);
		return;
	}

	auto mapRegPtr = REGAddr::getRegMap(command);
	if (!mapRegPtr)
	{
		spdlog::error("[mqtt] get register add info error, clientId={}, stationId={}, command={}", clientId, stationNo, command);
		return;
	}
	for (auto& item: json.items())
	{
		std::string key = item.key();
		if (key == "ts" || key == "no")
		{
			continue;
		}
		
		auto data = json[key];
		if (data.is_array())
		{
			int dataSize = data.size();
			if (command == "Charger_YC")
			{
				if (key == "1") key = "11";
				else if (key == "2") key = "21";
			}
			 
			std::string addrText;
			auto iter = mapRegPtr->find(key);
			for (int i = 0; i<dataSize; ++i)
			{
				int val = data[i];

				if (command == "BCU_YC" && (key == "0x0056" || key == "0x043E" || key == "0x0826" || key == "0x0C0E" || key == "0x0FF6"))
				{
					device->setBCUUnit(key, i, val, dataSize);
				}
				else
				{
					if (iter != mapRegPtr->end())
					{
						auto addr = iter->first;
						auto& regUnit = iter->second;
						if (regUnit.alert && val > 0)
						{
							station->readAlert(device, addr, val, "[" + command + "]" + regUnit.name + "(" + addr + ")");
						}

						device->setParam(addr, val);
						spdlog::debug("[mqtt] read [{}]={}, {}{}", addr, val, regUnit.name, regUnit.remark);

						if (command == "MEM_YC") { station->readRuntimeData(deviceNo, addr, val); }
						else if (command == "Fire40_YX") { station->readFire40Data(deviceNo, addr, val); }
						else if (command == "TH_YC") { station->readTHData(deviceNo, addr, val); }
						else if (command == "Cooling_YX" || command == "Cooling_YC") { station->readCoolingData(deviceNo, addr, val); }
						else if (command == "Gateway_YX")
						{
							//if (key == "CDZ")   "CDZ": 1, //充电桩 1：在线，0：离线
							//else if (key == "EMU")  //储能 1：在线，0：离线
						}
						++iter;
					}
				}
			}
		}
		else if (data.is_number())
		{
			device->setParam(key, data.get<int>());
		}
		else if (data.is_string())
		{
			device->setParam(key, Utils::toInt(data.get<std::string>()));
		}
	}
}
std::vector<std::string> KEY_CHARGER_1 = {"31071", "31073", "31075", "31077", "31079", "31081", "31083"};
std::vector<std::string> KEY_CHARGER_2 = {"31072", "31074", "31076", "31078", "31080", "31082", "31084"};
void MqttClient::ParseMessageCharge(njson& json, string command, std::shared_ptr<Station> station, std::shared_ptr<Device> device)
{
	if (json.contains("1"))
	{
		auto& jsondata = json["1"];
		if (jsondata.is_array())
		{
			for (int i = 0; i<jsondata.size(); i++)
			{
				if (i<KEY_CHARGER_1.size())
				{
					auto& addr = KEY_CHARGER_1[i];
					auto val = jsondata[i].get<int>();
					device->setParam(addr, val);
					spdlog::info("[mqtt] read: 枪1 [{}]={}", addr, val);
				}
			}
		}
	}
	if (json.contains("2"))
	{
		auto& jsondata = json["2"];
		if (jsondata.is_array())
		{
			for (int i = 0; i<jsondata.size(); i++)
			{
				if (i<KEY_CHARGER_2.size())
				{
					auto& addr = KEY_CHARGER_2[i];
					auto val = jsondata[i].get<int>();
					device->setParam(addr, val);
					spdlog::info("[mqtt] read: 枪2 [{}]={}", addr, val);
				}
			}
		}
	}
}