/*********
  Руи Сантос (Rui Santos)
  Более подробно о проекте на: http://randomnerdtutorials.com
  Пример в IDE Arduino: File > Examples > Arduino OTA > BasicOTA.ino
                       (Файл > Примеры > Arduino OTA > BasicOTA.ino)
*********/
#include <Arduino.h>
#include <ArduinoOTA.h>
#include <Ticker.h>
#include <AsyncMqttClient.h>
#include <ESP_EEPROM.h>
#include <Bounce2.h>

const char* ssid = "wf-home";
const char* password = "0ndthnrf";
const char* mqtt_server = "192.168.1.250";

AsyncMqttClient mqttClient;
Ticker mqttReconnectTimer;

WiFiEventHandler wifiConnectHandler;
WiFiEventHandler wifiDisconnectHandler;
Ticker wifiReconnectTimer;

// bool lStat1, oldLStat1;
// bool lStat2, oldLStat2;
// bool rcv;
//unsigned long cRun;
#define B_LED (1)
#define R_LED1 (14)
#define R_LED2 (13)
#define BUTT1 (4)
#define BUTT2 (3)
//bool led = false;

Bounce l1 = Bounce();
Bounce l2 = Bounce();

bool switchLight(uint8_t nLamp, int state, bool pub);
void connectToWifi();
void connectToMqtt();
void onWifiConnect(const WiFiEventStationModeGotIP& event);
void onWifiDisconnect(const WiFiEventStationModeDisconnected& event);
void onMqttConnect(bool sessionPresent);
void onMqttDisconnect(AsyncMqttClientDisconnectReason reason);
void onMqttMessage(char* topic, char* payload, AsyncMqttClientMessageProperties properties, size_t len, size_t index, size_t total);

void setup() {
  //Serial.begin(9600);
  //Serial.println("Booting");  //  "Загрузка"
  WiFi.mode(WIFI_STA);
  WiFi.hostname("SW-SmallRoom");
  ArduinoOTA.onStart([]() {
    // Serial.println("Start");  //  "Начало OTA-апдейта"
  });
  ArduinoOTA.onEnd([]() {
    // Serial.println("\nEnd");  //  "Завершение OTA-апдейта"
  });
  ArduinoOTA.onProgress([](unsigned int progress, unsigned int total) {
    // Serial.printf("Progress: %u%%\r", (progress / (total / 100)));
  });
  ArduinoOTA.onError([](ota_error_t error) {
    // Serial.printf("Error[%u]: ", error);
    // if (error == OTA_AUTH_ERROR) Serial.println("Auth Failed");
    // //  "Ошибка при аутентификации"
    // else if (error == OTA_BEGIN_ERROR) Serial.println("Begin Failed");
    // //  "Ошибка при начале OTA-апдейта"
    // else if (error == OTA_CONNECT_ERROR) Serial.println("Connect Failed");
    // //  "Ошибка при подключении"
    // else if (error == OTA_RECEIVE_ERROR) Serial.println("Receive Failed");
    // //  "Ошибка при получении данных"
    // else if (error == OTA_END_ERROR) Serial.println("End Failed");
    // //  "Ошибка при завершении OTA-апдейта"
  });
  ArduinoOTA.begin();

  pinMode(B_LED, FUNCTION_3);
  pinMode(B_LED, OUTPUT);
  digitalWrite(B_LED, HIGH);
  pinMode(R_LED1, OUTPUT);
  pinMode(BUTT1, INPUT_PULLUP);
  pinMode(R_LED2, OUTPUT);
  pinMode(BUTT2, FUNCTION_3);
  pinMode(BUTT2, INPUT_PULLUP);
  l1.attach(BUTT1);
  l2.attach(BUTT2);

  EEPROM.begin(16);
  uint8_t stat = 0;
  EEPROM.get(0, stat);
  digitalWrite(R_LED1, stat);
  EEPROM.get(1, stat);
  digitalWrite(R_LED2, stat);

	wifiConnectHandler = WiFi.onStationModeGotIP(onWifiConnect);
	wifiDisconnectHandler = WiFi.onStationModeDisconnected(onWifiDisconnect);

	mqttClient.onConnect(onMqttConnect);
	mqttClient.onDisconnect(onMqttDisconnect);
	mqttClient.onMessage(onMqttMessage);
	mqttClient.setServer(mqtt_server, 1883);
  mqttClient.setClientId("SmallRoomSW");

	connectToWifi();

//  cRun = millis();
}

void loop() {
  ArduinoOTA.handle();
  l1.update();
  l2.update();
  if(l1.fell()){
    switchLight(R_LED1, !digitalRead(R_LED1), true);
  }
  if(l2.fell()){
    switchLight(R_LED2, !digitalRead(R_LED2), true);
  }
}

bool switchLight(uint8_t nLamp, int state, bool pub)
{
  digitalWrite(nLamp, state);
  EEPROM.put(nLamp == R_LED1 ? 0 : 1, state);
  EEPROM.commit();
  String topic = "/home/smallroom/lamp";
  char n = nLamp == R_LED1 ? '1' : '2';
  if (pub) mqttClient.publish(String(topic + n).c_str(), 1, false, state ? "1" : "0");
  return state;
}

void connectToWifi() {
  //Serial.println("Connecting to Wi-Fi...");
  WiFi.begin(ssid, password);
}

void connectToMqtt() {
  //Serial.println("Connecting to MQTT...");
  mqttClient.connect();
}

void onWifiConnect(const WiFiEventStationModeGotIP& event) {
  //Serial.println("Connected to Wi-Fi.");
  //Serial.print("IP: ");
  //Serial.println(WiFi.localIP());
  connectToMqtt();
}

void onWifiDisconnect(const WiFiEventStationModeDisconnected& event) {
  //Serial.println("Disconnected from Wi-Fi.");
  mqttReconnectTimer.detach(); // ensure we don't reconnect to MQTT while reconnecting to Wi-Fi
  wifiReconnectTimer.once(2, connectToWifi);
}

void onMqttConnect(bool sessionPresent) {
  mqttClient.subscribe("/home/smallroom/lamp1", 1);
  mqttClient.subscribe("/home/smallroom/lamp2", 1);
  mqttClient.publish("/home/smallroom/lamp1", 1, false, digitalRead(R_LED1) == 1 ? "1" : "0");
  mqttClient.publish("/home/smallroom/lamp2", 1, false, digitalRead(R_LED2) == 1 ? "1" : "0");
  digitalWrite(B_LED, LOW);
}

void onMqttDisconnect(AsyncMqttClientDisconnectReason reason) {
  if (WiFi.isConnected()) {
    mqttReconnectTimer.once(2, connectToMqtt);
  }
  digitalWrite(B_LED, HIGH);
}

void onMqttMessage(char* topic, char* payload, AsyncMqttClientMessageProperties properties, size_t len, size_t index, size_t total) {
  if(strcmp(topic, "/home/smallroom/lamp1") == 0){
    if (atoi(payload) == 1) switchLight(R_LED1, 1, false);//lStat1 = true;
    else switchLight(R_LED1, 0, false);//lStat1 = false;
  }
  if(strcmp(topic, "/home/smallroom/lamp2") == 0){
    if (atoi(payload) == 1) switchLight(R_LED2, 1, false);//lStat2 = true;
    else switchLight(R_LED2, 0, false);//lStat2 = false;
  }
}