#include <ESP8266WiFi.h>
#include "Adafruit_MQTT.h"
#include "Adafruit_MQTT_Client.h"
#include "DHT.h"

#define water A0
#define buzzer D6
#define DHTPIN D7
#define DHTTYPE DHT11

DHT dht(DHTPIN, DHTTYPE);
/************************* WiFi Access Point *********************************/
#define WLAN_SSID       "network"
#define WLAN_PASS       "123456789"
/************************* Adafruit.io Setup *********************************/
#define AIO_SERVER      "io.adafruit.com"
#define AIO_SERVERPORT  1883                   // use 8883 for SSL
#define AIO_USERNAME    "Tezkar786"
#define AIO_KEY         "aio_OkNq45ypm1PcwDoUuLAtrA4Oor7H"
/************ Global State (you don't need to change this!) ******************/

WiFiClient client;
Adafruit_MQTT_Client mqtt(&client, AIO_SERVER, AIO_SERVERPORT, AIO_USERNAME, AIO_KEY);

/****************************** Feeds ***************************************/

// Setup a feed called 'photocell' for publishing.
// Notice MQTT paths for AIO follow the form: <username>/feeds/<feedname>
Adafruit_MQTT_Publish temp = Adafruit_MQTT_Publish(&mqtt, AIO_USERNAME "/feeds/temp");
Adafruit_MQTT_Publish hum = Adafruit_MQTT_Publish(&mqtt, AIO_USERNAME "/feeds/hum");
Adafruit_MQTT_Publish wL = Adafruit_MQTT_Publish(&mqtt, AIO_USERNAME "/feeds/wL");
Adafruit_MQTT_Publish inputonoff = Adafruit_MQTT_Publish(&mqtt, AIO_USERNAME "/feeds/of");

// Setup a feed called 'onoff' for subscribing to changes.
Adafruit_MQTT_Subscribe onoffbutton = Adafruit_MQTT_Subscribe(&mqtt, AIO_USERNAME "/feeds/onoff");

/*************************** Sketch Code ************************************/

// Bug workaround for Arduino 1.6.6, it seems to need a function declaration
// for some reason (only affects ESP8266, likely an arduino-builder bug).
void MQTT_connect();

void setup() {
  Serial.begin(115200);
  pinMode(water, INPUT);
  pinMode(buzzer, OUTPUT);
  dht.begin();
  delay(10);
  Serial.println(F("Adafruit MQTT demo"));
  // Connect to WiFi access point.
  Serial.println(); Serial.println();
  Serial.print("Connecting to ");
  Serial.println(WLAN_SSID);

  WiFi.begin(WLAN_SSID, WLAN_PASS);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println();

  Serial.println("WiFi connected");
  Serial.println("IP address: "); Serial.println(WiFi.localIP());

  // Setup MQTT subscription for onoff feed.
  mqtt.subscribe(&onoffbutton);
}

uint32_t x = 0;

void loop() {
  MQTT_connect();
  Adafruit_MQTT_Subscribe *subscription;
  while ((subscription = mqtt.readSubscription(5000))) {
    if (subscription == &onoffbutton) {
      Serial.print(F("Got: "));
      Serial.println((char *)onoffbutton.lastread);
    }
  }

  // Now we can publish stuff!
  //****************************************************
  float t = dht.readTemperature();
  Serial.print(F("\nSending temp val "));
  Serial.print(t);
  Serial.print("...");
  if (! temp.publish(t)) {
    Serial.println(F("Failed"));
  } else {
    Serial.println(F("OK!"));
  }
  //****************************************************
  //****************************************************
  float h = dht.readHumidity();
  Serial.print(F("\nSending hum val "));
  Serial.print(h);
  Serial.print("...");
  if (! hum.publish(h)) {
    Serial.println(F("Failed"));
  } else {
    Serial.println(F("OK!"));
  }
  //****************************************************
  //****************************************************

  int waterLevel = analogRead(water);
  if(waterLevel<20){waterLevel=0;}
  waterLevel = map(waterLevel,0,1023,0,100);
  Serial.print(F("\nSending water val "));
  Serial.print(waterLevel);
  Serial.print("...");
  if (! wL.publish(waterLevel)) {
    Serial.println(F("Failed"));
  } else {
    Serial.println(F("OK!"));
  }

  if (waterLevel > 0 && waterLevel <= 100) {
    int onStatus = 10;
    soundAlarm();
    if (! inputonoff.publish(onStatus)) {
      Serial.println(F("Failed"));
    } else {
      Serial.println(F("OK!"));
    }
  } else {
    int onStatus = 0;
    if (! inputonoff.publish(onStatus)) {
      Serial.println(F("Failed"));
    } else {
      Serial.println(F("OK!"));
    }
  }
  //****************************************************
  delay(5000);
}//end of Loop

// Function to connect and reconnect as necessary to the MQTT server.
// Should be called in the loop function and it will take care if connecting.
void MQTT_connect() {
  int8_t ret;

  // Stop if already connected.
  if (mqtt.connected()) {
    return;
  }

  Serial.print("Connecting to MQTT... ");

  uint8_t retries = 3;
  while ((ret = mqtt.connect()) != 0) { // connect will return 0 for connected
    Serial.println(mqtt.connectErrorString(ret));
    Serial.println("Retrying MQTT connection in 5 seconds...");
    mqtt.disconnect();
    delay(5000);  // wait 5 seconds
    retries--;
    if (retries == 0) {
      // basically die and wait for WDT to reset me
      while (1);
    }
  }
  Serial.println("MQTT Connected!");
}

void soundAlarm() {
  digitalWrite(buzzer, HIGH); //Set PIN 8 feet as HIG67890]\H = 5 v
  delay(2000);                   //Set the delay time2000ms
  digitalWrite(buzzer, LOW); //Set PIN 8 feet for LOW = 0 v
  delay(2000);                   //Set the delay time2000ms
}