#include "DHT.h"

#define DHTPIN 2     
#define DHTTYPE DHT22 

DHT dht(DHTPIN, DHTTYPE);
const int LDR = A1;
const int pinR = 3;
const int pinG = 5;
const int pinB = 6;
const int switchR = 11;
const int switchG = 12;
const int switchB = 10;
int i = 0;
float prev_temp;
float prev_hum;

int inputval=0; 
int outval =0; 

void setup() {

  pinMode(pinR, OUTPUT);
  pinMode(pinG, OUTPUT);
  pinMode(pinB, OUTPUT);
  pinMode(LDR, INPUT);
  pinMode(switchR, INPUT_PULLUP);
  pinMode(switchG, INPUT_PULLUP);
  pinMode(switchB, INPUT_PULLUP);
  dht.begin();
  prev_temp = dht.readTemperature();
  prev_hum = dht.readHumidity();
  
  Serial.begin(115200);
  if (isnan(prev_temp) || isnan(prev_hum)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }
  Serial.print(F("Humidity: "));
  Serial.print(prev_hum);
  Serial.print(F("%  Temperature: "));
  Serial.print(prev_temp);
  Serial.println(F("°C "));
}

void loop() {
  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();
  inputval = analogRead(LDR);
  outval = map(inputval, 8, 1015, 0, 255);
  if (isnan(temperature) || isnan(humidity)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }
  if (digitalRead(switchG) == HIGH) {
    analogWrite(pinG, outval);
  } else {
    analogWrite(pinG, 0);
  }
  if (digitalRead(switchR) == HIGH) {
    analogWrite(pinR, outval);
  } else {
    analogWrite(pinR, 0);
  }
  if (digitalRead(switchB) == HIGH) {
    analogWrite(pinB, outval);
  } else {
    analogWrite(pinB, 0);
  }
  
  if (prev_temp != temperature || prev_hum != humidity) {
    Serial.print(F("Humidity: "));
    Serial.print(humidity);
    Serial.print(F("%  Temperature: "));
    Serial.print(temperature);
    Serial.println(F("°C "));
    prev_temp = temperature;
    prev_hum = humidity;
  }

}