int LDR_A = A0;
int LED[] = {6,5,3};
int temppin = 2;
int R = 4;
int G = 7;
int B = 8;
int button[] = {9, 13, 11, 12};

#include "DHT.h"
#define DHTTYPE DHT22
DHT dht(temppin, DHTTYPE);

#include <Servo.h>
Servo myservo;
int pos = 0;
int knopA_vorig = 0;
int knopB = 0;
int knopB_vorig = 0;
int knopC_vorig = 0;
int knopD_vorig = 0;
int RGB = 0;
float temp2 = 0;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  for (int i = 0; i < 3; i++){
    pinMode(LED[i], OUTPUT);
  }
  dht.begin();
  pinMode(R, OUTPUT);
  pinMode(G, OUTPUT);
  pinMode(B, OUTPUT);
  for (int k=0; k < 4; k++){
    pinMode(button[k], INPUT);
  }
  myservo.attach(10);
}

void loop() {
  // put your main code here, to run repeatedly:
  int analogValue = analogRead(LDR_A);
  int led_voltage = map(analogValue, 8, 1016, 0, 255);
  if(knopA_vorig == 0){
  for (int i = 0; i < 3; i++){
    analogWrite(LED[i], led_voltage);
  }
  }
  knopB = digitalRead(button[1]);
  //Serial.println(knopB);
    if(knopB == 1 && knopB_vorig == 0){
      RGB += 1;
    }
    knopB_vorig = knopB;
    ventilator();
        
  
//kamerlichten
  if(digitalRead(button[0])){
    if(knopA_vorig == 0){
      for (int i = 0; i < 3; i++){
      digitalWrite(LED[i], LOW);}
      knopA_vorig = 1;}
  else{
    for (int i = 0; i < 3; i++){
    digitalWrite(LED[i], HIGH);
    }
    knopA_vorig = 0;
  }
  }

//Gordijn
  if (digitalRead(button[2])){
    if (knopC_vorig == 0){
      pos = 180;
      knopC_vorig = 1;}
      else{
        pos = 0;
        knopC_vorig = 0;
      }
    }
  myservo.write(pos);
  delay(20);

//Noodmodus
if(digitalRead(button[3])){
    myservo.write(180);
    digitalWrite(R, HIGH);
    digitalWrite(G, LOW);
    digitalWrite(B, LOW);
    for (int i = 0; i < 3; i++){
    digitalWrite(LED[i], HIGH);
  }
    delay(200);
    digitalWrite(R, LOW);
    for (int i = 0; i < 3; i++){
    digitalWrite(LED[i], LOW);
  }
    delay(200);
    }
}

  void ventilator(){
    float temp = dht.readTemperature();
    //Serial.println(temp);
    temp = constrain(temp, 20, 35);
    if(temp != temp2){
      RGB = map(temp, 20, 35, 0, 3);
    }

  switch(RGB%4){
    case 0:
    digitalWrite(R, LOW);
    digitalWrite(G, LOW);
    digitalWrite(B, LOW);
    break;
    case 1:
    digitalWrite(R, LOW);
    digitalWrite(G, HIGH);
    digitalWrite(B, LOW);
    break;
    case 2:
    digitalWrite(R, LOW);
    digitalWrite(G, LOW);
    digitalWrite(B, HIGH);
    break;
    case 3:
    digitalWrite(R, HIGH);
    digitalWrite(G, LOW);
    digitalWrite(B, LOW);
  }
  temp2 = temp;
  //Serial.println(temp2);
  }