#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <DHT.h> // library for getting data from DHT
#include <ESP8266WebServer.h>
#include <BlynkSimpleEsp8266.h>
int j=0;
int k=0;
int d=0;
int q=0;

char auth[] = "_mv_FyIWMqpduhhE2IuNFhcHKVjAWDqm"; // Blynk project
const char* ssid     = "FTTH-79Q7";
const char* password = "Mateen@2016";
 
const char* host = "api.thingspeak.com";
const char* APIKey = "I0C0N8CJSO8NF3E0";
const int relay = D4;
#define DHTPIN D2 //pin where the DHT11 is connected
DHT dht(DHTPIN, DHT11);

BLYNK_WRITE(4) // Lamp remote control
{
  int i=param.asInt();
  if (i==1) 
  {
     Blynk.virtualWrite(V3, "Motor Is ON");
     j=1;
     Serial.println(j);
    //aplyCmd();
  }
  else {
  Blynk.virtualWrite(V3, "Motor Is OFF");
  j=0;
  Serial.println(j);
  }
}


BLYNK_WRITE(5) // Lamp remote control
{
  int z=param.asInt();
  if (z==1) 
  {
     d=1;
     Serial.println("notefecation is");
    Serial.println(d);
    //aplyCmd();
  }
  else {
    
  d=0;
  Serial.println("notefecation is");
  Serial.println(d);
  }
}





void setup()
{
    Serial.begin(115200);
    delay(10);
    dht.begin();
    Blynk.begin(auth,ssid,password);
 
    // We start by connecting to a WiFi network
    pinMode(relay, OUTPUT);
    Serial.println();
    Serial.println();
    Serial.print("Connecting to ");
    Serial.println(ssid);
 
    WiFi.begin(ssid, password);
 
    while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        Serial.print(".");
    }
 
    Serial.println("");
    Serial.println("WiFi connected");
    Serial.println("IP address: ");
  //  Serial.println(WiFi.localIP());
}
 
int value = 0;

 
void loop()
{   Blynk.run();
    float h = dht.readHumidity(); // Reading Temperature form DHT sensor
    float t = dht.readTemperature(); // Reading Humidity form DHT sensor
    if (isnan(h) || isnan(t))
   // {
Serial.println("Failed to read from DHT sensor!");
     //return;
  //  }
  else {
    Serial.println("");
    Serial.print("humidity is = ");
    Serial.print(h);
    Serial.println("");
    Blynk.virtualWrite(V1, h);
    Serial.print("tempreture is = ");
    Serial.print(t);
    Serial.println(""); 
    Blynk.virtualWrite(V0, t);
  }

  
    delay(5000);
    value = analogRead(A0);
    Serial.print("Soil Sensor reading is =");
  Serial.print(value);
Blynk.virtualWrite(V2, value);

      if (value > 900 || h < 20 || j>0 ) // Emergency state water is needed imeditely 
      {
      digitalWrite(relay, LOW);
      delay(5000); 
      Serial.print("-->reley is on");
      Blynk.virtualWrite(V6, "Motor Is ON Actually");
      q=1;
      }

      else if ((value >550)&& (value<=900)) // garden may need water
      {
        Serial.print("inside may be ");
        k++;
        if (k==1 && q==0)
        Blynk.notify(" garden may need water press ok to irrigate it");
        if (d>0){
          digitalWrite(relay, LOW);
      delay(5000); 
      Serial.print("garden on ");
      Blynk.virtualWrite(V6, "Motor Is ON Actually");
        }
        
      }
      else if (value<550 || h>50 || j==0 || d==0 ) // every thing is good no more water is needed
      {      
      digitalWrite(relay, HIGH);
      delay(5000); 
      Serial.print("-->reley is off ");
      Blynk.virtualWrite(V6, "Motor Is OFF Actually");
      k=0;
      d=0;
      q=0;
    
      }
  
   // Serial.print("connecting to ");
    //Serial.println(host);
 
    // Use WiFiClient class to create TCP connections
    WiFiClient client;
    const int httpPort = 80;
    if (!client.connect(host, httpPort)) {
    //    Serial.println("connection failed");
        return;
    }
 
    // We now create a URI for the request
    String url = "/update";
    url += "?api_key=";
    url += APIKey;
    url += "&field1=";
    url += value;
    url += "&field2=";
    url += h;
    url += "&field3=";
    url += t;
 
  //  Serial.print("Requesting URL: ");
   // Serial.println(url);
 
    // This will send the request to the server
    client.print(String("GET ") + url + " HTTP/1.1\r\n" +
                 "Host: " + host + "\r\n" +
                 "Connection: close\r\n\r\n");
    unsigned long timeout = millis();
    while (client.available() == 0) {
        if (millis() - timeout > 5000) {
            Serial.println(">>> Client Timeout !");
            client.stop();
            return;
        }
    }
 
    // Read all the lines of the reply from server and print them to Serial
    while(client.available()) {
        String line = client.readStringUntil('\r');
     //   Serial.print(line);
    }
 
   // Serial.println();
    Serial.println("\nclosing connection");
}