#include <WiFi.h>
#include <LiquidCrystal_I2C.h>
#include <ThingSpeak.h> // always include thingspeak header file after other header files and custom macros
#include "DHTesp.h"
#include <Wire.h>


const int DHT_PIN = 15;

DHTesp dhtSensor;
int warmLed = 12;
int normalLed=13;
int coldLed=14;
LiquidCrystal_I2C LCD = LiquidCrystal_I2C(0x27, 16, 2);
const char * ssid= "Wokwi-GUEST";
const char * pass = "";


WiFiClient  client;


unsigned long myChannelNumber = 1972572;
const char * myWriteAPIKey = "E3YMHYRQCA2AGHEK";
const char * server="api.thingspeak.com";

long lastTime=0;
long timerDelay=30000;


int temperature;
int humidity; 

int temppin=32;
float pinval;
float temp=0.00;

void setup() 
{ 
  //pinMode(temppin,INPUT);
  Serial.begin(115200);  //Initialize serial
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  dhtSensor.getPin();
  delay(10);
  WiFi.begin(ssid,pass);
  while(WiFi.status() != WL_CONNECTED){
    
    delay(100);
    Serial.println("Wifi Connected") ; 
    Serial.println(WiFi.localIP());
    
    WiFi.mode(WIFI_STA);
    ThingSpeak.begin(client);  // Initialize ThingSpeak
  }
 pinMode(warmLed, OUTPUT);
 pinMode(coldLed, OUTPUT);
 pinMode(normalLed, OUTPUT);

  
}
void loop() 
{
  // Connect or reconnect to WiFi
  if(WiFi.status() != WL_CONNECTED)
  {
    Serial.print("Attempting to connect to SSID: ");
    Serial.println(ssid);
    while(WiFi.status() != WL_CONNECTED)
    {
      WiFi.begin(ssid, pass); // Connect to WPA/WPA2 network. Change this  line if using open or WEP network
      Serial.print(".");
      delay(5000);     
    } 
    Serial.println("\nConnected.");

  }
    
    temperature=dhtSensor.getTemperature();
    Serial.println("Temperature: " + String(temperature) + "°C");
    humidity=dhtSensor.getHumidity();
    Serial.println("Humidity: " + String(humidity) + "%");
    if(temperature>41){
    digitalWrite(warmLed, HIGH);
    }else if(((temperature)<40)&&((temperature)>15)){
      digitalWrite(normalLed, HIGH);
    }else{
        digitalWrite(coldLed, HIGH);
    }
  LCD.init();
  LCD.backlight();
  LCD.setCursor(0, 0);
  LCD.print("Temperature: " + String(temperature) + "°C");
  LCD.setCursor(0, 1);
  LCD.print("Humidity: " + String(humidity) + "%");
    

    ThingSpeak.setField(1,temperature);
    ThingSpeak.setField(2,humidity);
  // Write to ThingSpeak. There are up to 8 fields in a channel, allowing you to store up to 8 different
  // pieces of information in a channel.  Here, we write to field 1.
  int x = ThingSpeak.writeFields(myChannelNumber,myWriteAPIKey);
  if(x == 200)
  {
    Serial.println("Channel update successful.");
  }
  
  delay(1000); // Wait 7 seconds to update the channel again
}