/**
   ESP32 + DHT22 Example for Wokwi
   
   https://wokwi.com/arduino/projects/322410731508073042
*/
//Code created by Lara Jbara
//Added by Lara Jbara: Check https://lastminuteengineers.com/esp32-pinout-reference/ for ESP32 datasheet

#include "DHTesp.h"
#define maxRGBVal 255

const int DHT_PIN = 15;
/* Constants - define pin numbers for LEDs
GPIOs: 36 - 39 - 34 and 35 are only Inputs */
const uint8_t redLedPins = 13;
const uint8_t greenLedPins = 33;
const uint8_t blueLedPins = 12;

//We should use PWM pins so we cannot use pins 34 - 35 - 36 and 39
//Do not forget to add ""attrs": {"common": "cathode"} " in diagram.json file 
const uint8_t redRGBPins = 5;
const uint8_t greenRGBPins = 18;
const uint8_t blueRGBPins = 19;

DHTesp dhtSensor;

void setup() {
  Serial.begin(115200);
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);

  //Initialize all Leds as Outputs
  pinMode(redLedPins, OUTPUT);
  pinMode(greenLedPins, OUTPUT);
  pinMode(blueLedPins, OUTPUT);

//Initialize RGB Led as Output
  pinMode(redRGBPins, OUTPUT);
  pinMode(greenRGBPins, OUTPUT);
  pinMode(blueRGBPins, OUTPUT);

  //Turn off all Leds after initialization
  digitalWrite(redLedPins, LOW);
  digitalWrite(greenLedPins, LOW);
  digitalWrite(blueLedPins, LOW);

  analogWrite(redRGBPins, 0);
  analogWrite(greenRGBPins, 0);
  analogWrite(blueRGBPins, 0);

}

void loop() {
  TempAndHumidity  data = dhtSensor.getTempAndHumidity();
  Serial.println("Temp: " + String(data.temperature, 2) + "°C");
  Serial.println("Humidity: " + String(data.humidity, 1) + "%");
  Serial.println("---");
  changeLedColor(data);
  changeRGBColor(data);
  delay(50);
}

void changeLedColor(TempAndHumidity  data)
{
  int redValue = 0;
  int greenValue = 0;
  int blueValue = 0;

  if (data.temperature > 5)
  {
    Serial.println("Red: " + String(data.temperature, 2) + "°C");
    digitalWrite(greenLedPins, LOW);
    digitalWrite(blueLedPins, LOW);
    digitalWrite(redLedPins, HIGH);
  }
  else if ((data.temperature >= 0) && (data.temperature <= 5))
  {
    Serial.println("Green: " + String(data.temperature, 2) + "°C");
    digitalWrite(redLedPins, LOW);
    digitalWrite(blueLedPins, LOW);
    digitalWrite(greenLedPins, HIGH);
  }
  else if(data.temperature < 0)
  {
    Serial.println("Blue: " + String(data.temperature, 2) + "°C");
    digitalWrite(redLedPins, LOW);
    digitalWrite(greenLedPins, LOW);
    digitalWrite(blueLedPins, HIGH);
  }

}

void changeRGBColor(TempAndHumidity  data)
{
  int redValue = 0;
  int greenValue = 0;
  int blueValue = 0;
  int variableValue = 0;

  if((data.temperature <= 30) && (data.temperature >= 5))//Between Red and Green Colors
  {
    blueValue = 0;
    variableValue = (int) round(10.2 * (30 - data.temperature));//10.2=255/((30+20)/2)
    redValue = 255 - variableValue;
    greenValue = variableValue;
  }
  
  else if((data.temperature < 5) && (data.temperature >= -20))//Between Green and Blue Colors
  {
    redValue = 0;
    variableValue = (int) round(10.2 * (5 - data.temperature));
    greenValue = 255 - variableValue;
    blueValue = variableValue;
  }

    analogWrite(redRGBPins,redValue);
    analogWrite(greenRGBPins,greenValue);
    analogWrite(blueRGBPins,blueValue);
}