// UPDATED AS OF  "Friday 10/02/2023" @ "16:06"

#include <LiquidCrystal.h>
#include <Servo.h>
#include <EEPROM.h>
#include <Stepper.h>
#include <dht.h>                                            //CHANGE ONCE ASSEM
#include <RTClib.h>                                         //CHANGE ONCE ASSEM




const int StepsPerRevolution = 3600;                        //CHANGE ONCE ASSEM
Stepper myStepper(StepsPerRevolution, 29, 27, 25, 23);      //CHANGE ONCE ASSEM

RTC_DS1307 rtc;                                             //CHANGE ONCE ASSEM
dht DHT;                                                    //CHANGE ONCE ASSEM
LiquidCrystal lcd (12,11,5,4,3,2);

#define trigPin 14
#define echoPin 15
#define BUTTON_PIN  33                                      //CHANGE ONCE ASSEM
#define DHT22_PIN 13                                        //CHANGE ONCE ASSEM

String state, initial_s;
long initial;
float time, dist;
bool flag = false;                    //True=open
bool serial_flag = false;
int flagger = 0;
float box_size = 400; //cm
int percentage;
int act_perc;
int readData;
float hum,tum;
int hum_tak, tum_tak;
int clock = 0, c_clock, a_clock;
long timer = 0;

Servo servo;

void setup() {
  // put your setup code here, to run once:


  Serial.begin(9600);
  servo.attach(16);

  lcd.begin(16,2);
  lcd.print("Welcome");
  delay(1000);
  lcd.clear();

  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  pinMode(BUTTON_PIN, INPUT_PULLUP);                      //CHANGE ONCE ASSEM

  lcd.setCursor(0,0);
  lcd.print("Capacity: ");
  lcd.setCursor(13,0);
  lcd.print("%");
  lcd.setCursor(0,1);
  lcd.print("T: ");
  lcd.setCursor(8,1);
  lcd.print("H: ");
  lcd.setCursor(5,1);
  lcd.print("%");  
  lcd.setCursor(13,1);
  lcd.print("%");

  myStepper.setSpeed(9);                             //CHANGE ONCE ASSEM

  rtc.begin();


}


void loop() {
  // put your main code here, to run repeatedly:
  DateTime now = rtc.now();
  a_clock = now.second();
  Serial.println(a_clock);

  digitalWrite(trigPin,LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin,HIGH);
  delayMicroseconds(10);
  
  time = pulseIn(echoPin, HIGH);

  dist = ((time/2)*(340))/10000;
  percentage = (dist/box_size)*100;
  act_perc = percentage;

  lcd.setCursor(10,0);
  lcd.print(act_perc);



  if  (digitalRead(BUTTON_PIN)==0){

    if (EEPROM.read(1)==255){
      Serial.println("counterclockwise");
      myStepper.step(-StepsPerRevolution);
      flag = true;
      EEPROM.write(1,0);
      delay(500);
    }
    else if (EEPROM.read(1)==0){
      Serial.println("clockwise");
      myStepper.step(StepsPerRevolution);
      EEPROM.write(1,255);
      flag = false;
      delay(500);
    }
    
  }
  
  readData = DHT.read22(DHT22_PIN);     // Reads the data from the sensor
  tum = floor(DHT.temperature);              // Gets the values of the temperature
  hum = floor(DHT.humidity);                 // Gets the values of the humidity
  tum_tak = int(tum);
  hum_tak = int(hum);

  lcd.setCursor(3,1);
  lcd.print(tum_tak);
  lcd.setCursor(11,1);
  lcd.print(hum_tak);



if ((hum < 40) && (timer%200 == 0)){
  servo.write(180);
  delay(200);
  servo.write(0);
  delay(200);
  servo.write(180);
  delay(200);
  servo.write(0);
  delay(200);  
  servo.write(180);
  delay(200);
  servo.write(0);
  delay(200);
}

  timer = timer+1;

if ((hum > 60) && (flag == false)){
    myStepper.step(-StepsPerRevolution);
    flag = true;
}

if ((hum < 60) && (flag == true)){
    myStepper.step(StepsPerRevolution);
    flag = false;
}


if (timer>=10000){
  timer = 0;
} 


}