#define fan_pin D0
#define pump_pin D1
#define led_pin D2

#define ldr_pin A0

#include <string.h>


#include <dht.h>
dht DHT;
#define DHTpin D3

#include <ESP8266WiFi.h>
#include <PubSubClient.h>  

const char* ssid = "name of the wifi router";
const char* password = "wifi code";
const char* mqtt_server = "192.168.1.3";//Adresse IP du Broker Mqtt
int soilValue;
WiFiClient espClient;
PubSubClient client(espClient);
char msg_hum[50];
char msg_temp[50];
char msg_hum_temp[50]="";
float temp;
float hum;
int led;
int ldrStatus;
 

void setup() 
{
 pinMode(fan_pin,OUTPUT);
 pinMode(pump_pin,OUTPUT);
 pinMode(led_pin,OUTPUT);
 pinMode(DHTpin,INPUT);
 pinMode(ldr_pin,INPUT);
 

 digitalWrite(pump_pin,HIGH);
 digitalWrite(led_pin,HIGH);
 
 Serial.begin(9600);

 if(analogRead(ldr_pin) < 60)   
 led = 0;
 else
 led = 1;

 setup_wifi();
 client.setServer(mqtt_server,1883);
}

void setup_wifi() 
{
  delay(10);

  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) 
  {
      Serial.println("no");

    delay(500);
  }
}

void reconnect() 
{
  while (!client.connected()) 
  {
    if (client.connect("ESP8266Client")) 
    {
      //client.publish("temperature", "hello world");
      //client.subscribe("temperature");
            Serial.println("yes");

    } 
    else 
    {
      delay(500);
    }
  }
}

void loop() 
{

  if (!client.connected()) 
  {
    reconnect();
  }
  
  client.loop();
    
    /*digitalWrite(pump_pin,LOW);
    delay(2000);
    digitalWrite(pump_pin,HIGH);
    delay(4000);*/

    ldrStatus = analogRead(ldr_pin);

    
    delay(500);
    
    uint32_t start = micros();
    int chk = DHT.read22(DHTpin);
    uint32_t stop = micros();
   
    temp = DHT.temperature;
    Serial.print("Temperature : ");
    Serial.println(temp);
  
    //hum = DHT.humidity;
    hum=45;
    Serial.print("Humidity air : ");
    Serial.println(hum);

    snprintf (msg_hum,5,"%f",hum);
    snprintf (msg_temp,5,"%f",temp);
    strcpy(msg_hum_temp,msg_hum);
    strcat(msg_hum_temp,"/");
    strcat(msg_hum_temp,msg_temp);
    client.publish("roytuts-input",msg_hum_temp);
    strcpy(msg_hum_temp,"");
    
    if(temp >30)
    digitalWrite(fan_pin,HIGH);
    else
    digitalWrite(fan_pin,LOW);

    Serial.print("ldr : ");
    Serial.println(analogRead(ldr_pin));

    if(ldrStatus < 60 and led==0)   
    {
      led=1;
      digitalWrite(led_pin,LOW);
    }
    else
    {
      if(ldrStatus >= 60 and led==1)   
      {
        led=0;
        digitalWrite(led_pin,HIGH);
      }
    }   
    
}