#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <Servo.h>
#include "HX711.h"
#define DOUT  3
#define CLK  2
float scaless;
HX711 scale(DOUT, CLK);
LiquidCrystal_I2C lcd(0x3F);
float calibration_factor = 128950;
Servo rightServo;
Servo leftServo;


int pulsePin = 5;
int dirPin = 6;
int enblPin = 7;
int ikot = 0;

int startButton = 8;
int stopButton = 9;

int stateStart = 0;
int stateStop = 0;

int threshStart = 0;
int threshStop = 0;

int lastThreshStart = 0;
int lastThreshStop = 0;

int startt = 0;
int stopp = 0;
int resett = 0;

int upSwitch = 31;
int downSwitch = 33;

int bottle300H;
int bottle500H;
int bottle1000H;
int bottle1500H;
int bottle300S;
int bottle500S;
int bottle1000S;
int bottle1500S;

int threshBottle300H;
int threshBottle500H;
int threshBottle1000H;
int threshBottle1500H;
int threshBottle300S;
int threshBottle500S;
int threshBottle1000S;
int threshBottle1500S;

int ctr = 0;
int lastThresh1 = 0;
int lastThresh2 = 0;
int lastThresh3 = 0;
int lastThresh4 = 0;
int lastThresh5 = 0;
int lastThresh6 = 0;
int lastThresh7 = 0;
int lastThresh8 = 0;
float perKilo = 12;
float maxLimit = 2;
float totalPhp = 0;
float percErr = 0;
float totalError = 0;
float percErr1=0;

void setup()
{
  rightServo.attach(11);
  leftServo.attach(12);
  pinMode(startButton, INPUT);
  pinMode(stopButton, INPUT);
  Serial.begin(9600);
  lcd.begin(16, 2);
  lcd.backlight();
  lcd.setCursor(1, 0);
  lcd.print("WELCOME TO");
  Serial.println("Welcome to Ejunkshop");
  lcd.setCursor(0, 1);
  lcd.println("E-JUNKSHOP");
  scale.set_scale();
  scale.tare();
}

void loop()
{
  bottleSensor;
  stateStart = digitalRead(startButton);
  stateStop = digitalRead(stopButton);

  if (threshStart != lastThreshStart) {
    startt = startt + 1;
    lcd.clear();
    lcd.setCursor(1, 0);
    lcd.print("PLEASE INSERT");
    Serial.print("Please Insert");
  }
  if (startt == 1 && threshBottle300H != lastThresh1 || threshBottle500H != lastThresh2 || threshBottle1000H != lastThresh3 || threshBottle1500H != lastThresh4 || threshBottle300S != lastThresh5 || threshBottle500S != lastThresh6 || threshBottle1000S != lastThresh7 || threshBottle1500S != lastThresh7) {
    if (threshBottle300H == 1 || threshBottle500H == 1 || threshBottle1000H == 1 || threshBottle1500H == 1 || threshBottle300S == 1 || threshBottle500S == 1 || threshBottle1000S == 1 || threshBottle1500S == 1 )
    {
      ctr = ctr + 1;
      lcd.setCursor(1, 0);
      lcd.print("Bottle Count: ");
      Serial.print("Bottle Count: ");
      Serial.println(ctr);
      lcd.print(ctr);
      lcd.setCursor(0, 1);
      lcd.print("Kilo: ");
      lcd.print(scaless);
      lcd.print("Php: ");
      lcd.print(totalPhp);
      delay(5);
      Serial.print("counter :  ");
      Serial.println(ctr);
      Serial.println((scaless * -1), 4);
      totalPhp = scaless * perKilo;
      percErr = (scaless*ctr) * 0.20;
      percErr1 = percErr + scaless;
      if (scaless >= maxLimit ) {
        lcd.clear();
        lcd.setCursor(1, 0);
        lcd.print("Overload");
        Serial.println("OVERLOAD NIGGA");
      }
      if (scaless >= percErr1){
        Serial.print(percErr1);
      }
    }
  }



  lastThresh1 = threshBottle300H;
  lastThresh2 = threshBottle500H;
  lastThresh3 = threshBottle1000H;
  lastThresh4 = threshBottle1500H;
  lastThresh5 = threshBottle300S;
  lastThresh6 = threshBottle500S;
  lastThresh7 = threshBottle1000S;
  lastThresh8 = threshBottle1500S;
  lastThreshStart = threshStart;
  lastThreshStop = threshStop;
}