#include <DHTesp.h>
#include <WiFi.h>
#include <ThingSpeak.h>

DHTesp dhtSensor;
TempAndHumidity data;

const int TRIG = 27;
const int ECHO = 14;

float distance;
long duration;
 
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

WiFiClient client;

unsigned long CHANNEL_ID = 2614272;

const char* WRITE_API_KEY = "TGA3130M5K5W00U8";

int status;

const int DHT_PIN = 25;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  dhtSensor.setup(DHT_PIN,DHTesp::DHT22);
  pinMode(TRIG, OUTPUT);
  pinMode(ECHO,INPUT); 
  pinMode(19, OUTPUT);
  pinMode(34, INPUT);
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);

}
void getWifi(){
  if(WiFi.status()!=WL_CONNECTED){
    Serial.println("Atempting to connect");
    while(WiFi.status()!=WL_CONNECTED)
    {
      WiFi.begin(ssid,pass);
      Serial.println(".");
      delay(5000);
    }
    Serial.println("connected");
  };
}

void loop() {
  getWifi();
  data = dhtSensor.getTempAndHumidity();
  Serial.println("Humidity : " + String(data.humidity));
  Serial.println("Temperature : " + String(data.temperature));
  // put your main code here, to run repeatedly:
  

  digitalWrite(TRIG,LOW);
  delayMicroseconds(10);
  digitalWrite(TRIG, HIGH);
  duration = pulseIn(ECHO,HIGH);
  distance = 0.017*duration;

  Serial.println("distance : " + String(distance));
  Serial.println("---------------------");

  int volt = analogRead(34);
  int intensity = map(volt,0,4095,0,255);
  analogWrite(19,intensity);
  Serial.println(String(volt));
  Serial.println(String(intensity));

  ThingSpeak.setField(1,data.humidity);
  ThingSpeak.setField(2,data.temperature);
  ThingSpeak.setField(3,distance);
  ThingSpeak.setField(4,volt);
  ThingSpeak.setField(5,intensity);
 

  status = ThingSpeak.writeFields(CHANNEL_ID,WRITE_API_KEY);

  if(status == 200){
    Serial.println("Channel updated succesfully");
  }
  else{
    Serial.println("Problem with writing data , HTTP errror code : " + String(status));
  }
  delay(15000); // this speeds up the simulation
}