#include "DHT.h"
#include <LiquidCrystal_I2C.h>

#define DHTPIN 2     
#define DHTTYPE DHT22   // DHT 22  (AM2302), AM2321

DHT dht(DHTPIN, DHTTYPE);
LiquidCrystal_I2C lcd(0x27, 16, 2);

int redLED = 7;
int orangeLED = 6;
int yellowLED = 5;
int blueLED = 4;
int whiteLED = 3;

void setup() {
  Serial.begin(9600);
  Serial.println(F("UNIT 5 Project Backup Part 1"));

  dht.begin();

  lcd.begin(20, 4);
  lcd.backlight();

  pinMode(redLED, OUTPUT);
  pinMode(orangeLED, OUTPUT);
  pinMode(yellowLED, OUTPUT);
  pinMode(blueLED, OUTPUT);
  pinMode(whiteLED, OUTPUT);

}

void loop() {
  float temperature = dht.readTemperature();

  // Check if any reads failed and exit early (to try again).
  if (isnan(temperature)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }


  Serial.print(F("Temperature: "));
  Serial.print(temperature);
  Serial.println(F("°C "));

  // Wait a few seconds between measurements.
  delay(1000);

  lcd.setCursor(0, 0);
  lcd.print("Temp = ");
  lcd.print(temperature);
  lcd.println(" C");


  digitalWrite(whiteLED, LOW);
  digitalWrite(blueLED, LOW);
  digitalWrite(yellowLED, LOW);
  digitalWrite(orangeLED, LOW);
  digitalWrite(redLED, LOW);
  if (temperature < 0) {
    digitalWrite(whiteLED, HIGH);
    lcd.setCursor(0, 7);
    lcd.print("Temp = ");
    lcd.print(temperature);
    lcd.println(" C");
    
  } else {
    if (temperature < 15) {
      digitalWrite(blueLED, HIGH);
      lcd.setCursor(0, 7);
      lcd.print("Temp = ");
      lcd.print(temperature);
      lcd.println(" C");
    } else {
      if (temperature < 25) {
        digitalWrite(yellowLED, HIGH);
        lcd.setCursor(0, 7);
        lcd.print("Temp = ");
        lcd.print(temperature);
        lcd.println(" C");
      } else {
        if (temperature < 35) {
          digitalWrite(orangeLED, HIGH);
          lcd.setCursor(0, 7);
          lcd.print("Temp = ");
          lcd.print(temperature);
          lcd.println(" C");
        } else {
          digitalWrite(redLED, HIGH);
          lcd.setCursor(0, 7);
          lcd.print("Temp = ");
          lcd.print(temperature);
          lcd.println(" C");
        }
      }
    }
  }

}