#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <NewPing.h> // Include  library used for measuring the distance using HC-SR 06 sonar sensor
//https://www.texobot.com/content/embedded-system/Pump-automation-using-Arduino
LiquidCrystal_I2C lcd(0x27, 16, 2);
const int TRIG = 11;
const int ECHO = 10;
const int LED = 5;
#define MAX_DISTANCE 500 // Maximum distance we want to ping for (in centimeters). Maximum sensor distance is rated at 400-500cm.
NewPing sonar(TRIG, ECHO, MAX_DISTANCE); // NewPing setup of pins and maximum distance.
//#define RELAYPIN 8 // Arduino pin tied to Relaypin of the Relay Circuit
//#define EXTRELAYPIN 13 // Arduino pin tied to vin pin of the External Relay Circuit
#define BUZZER 9 // Arduino pin tied to +ve terminal of the Buzzer
float val;
#include <EEPROM.h>
int addr = 0;
int addr2 = 1;
int TH=2;
int flag;
byte readval;
#define Manul 8
#define Up 6
#define Down 7
int ManulState = 0;
int UpState = 0;
int DownState = 0;
float TankHeight, MaxWaterLevel, EmptySpace, SonarReading, ActualReading,   Temp;
int percentage;
float TankBrith = 50, TankLenth = 210, TankCap = 0, TankStore = 0 ;
///long b = 48, le = 60, h = 60, fvol = 0, st = 0;
// Creating Charaters for Bar Graph and Reverse Mode Icon

byte Level0[8] = {
  0b00000,
  0b00000,
  0b00000,
  0b00000,
  0b00000,
  0b00000,
  0b11111,
  0b11111
};

byte Level1[8] = {
  0b00000,
  0b00000,
  0b00000,
  0b00000,
  0b11111,
  0b11111,
  0b11111,
  0b11111
};

byte Level2[8] = {
  0b00000,
  0b00000,
  0b11111,
  0b11111,
  0b11111,
  0b11111,
  0b11111,
  0b11111
};

byte Level3[8] = {
  0b11111,
  0b11111,
  0b11111,
  0b11111,
  0b11111,
  0b11111,
  0b11111,
  0b11111
};
byte NoLevel[8] = {
  0b00000,
  0b00000,
  0b00000,
  0b00000,
  0b00000,
  0b00000,
  0b00000,
  0b00000,
};

void setup() {
  // initialize serial communication:
  Serial.begin(9600);
  lcd.init(); // initialize the lcd
  lcd.backlight();
  lcd.createChar(0, Level0);
  lcd.createChar(1, Level1);
  lcd.createChar(2, Level2);
  lcd.createChar(3, Level3);
  lcd.createChar(4, NoLevel);
  //Serial.println(flag);
  lcd.begin(16, 2); // set up the LCD's number of columns and rows:
  pinMode(BUZZER, OUTPUT); // Buzzer pin as output pin
  digitalWrite(BUZZER, LOW); //Turn off the Buzzer
  //lcd.print("Automatic  Water");
  //lcd.setCursor(0, 1);
  //lcd.print("*Pumping System*");
  //delay(200);
  //lcd.clear();
lcd.print("Long Press Button to Change Tank Height");
delay(300);
for (int positionCounter = 0; positionCounter < 23; positionCounter++) {
  // scroll one position left:
  lcd.scrollDisplayLeft();
  // wait a bit:
  delay(300);
  }
  if (ManulState == HIGH)// red butto
  {
    lcd.clear();
    lcd.print("Tank Lenth");
    lcd.setCursor(0, 1);
    TankHeight = EEPROM.read(TH);
     lcd.setCursor(0, 0);
     lcd.print(TankHeight);
     delay(2000);
  }

  // delay(500);
  // lcd.clear();
  // lcd.print("Tank must be Empty!");
  // delay(1000);
  // for (int positionCounter = 0; positionCounter < 3; positionCounter++)
  // {
  //   // scroll one position left:
  //   lcd.scrollDisplayLeft();
  //   // wait a bit:
  //   delay(300);
  // }
  // delay(500);
  // lcd.clear();
  // lcd.print("Change Tnk Height");
  // for (int i = 0; i <= 3; i++)
  // {
  //   lcd.setCursor(0, 1);
  //   lcd.print("  in:");
  //   lcd.print(3 - i);
  //   lcd.print(" Seconds");
  //   buttonState = digitalRead(buttonPin);
  //   if (buttonState == HIGH)
  //   {
  //     TankHeight = sonar.ping_cm();
  //     EEPROM.write(addr, TankHeight);
  //   }
  //   delay(500);
  //}
  //TankHeight = EEPROM.read(addr);
  TankHeight = 130;
  //lcd.clear();
  // lcd.print("Tnk Height Set:");
  // lcd.setCursor(0, 1);
  //lcd.print("	");
  //lcd.print(TankHeight);
  //lcd.print("cm	");
  // d//elay(1000);
  //lcd.clear();
  //MaxWaterLevel = 0.90 * TankHeight;
  MaxWaterLevel = 125;
  EmptySpace = TankHeight - MaxWaterLevel;
}
void loop()
{
  delay(50);
  SonarReading = sonar.ping_cm();
  // put your main code here, to run repeatedly:
  Temp = SonarReading - EmptySpace;
  ActualReading = MaxWaterLevel - Temp;
  percentage = (ActualReading / MaxWaterLevel * 100);
  lcd.clear();
  ManulState = digitalRead(Manul);
  if (ManulState == HIGH)
  {
    flag = 1;
    EEPROM.write(addr2, flag);
    flag = EEPROM.read(addr2);
    lcd.setCursor(0, 0);
    lcd.print("PMP ON  ");
  }
  delay(500);
  lcd.setCursor(8, 0);
  lcd.print("Lev:");
  lcd.print(percentage);
  lcd.print("%	");
  lcd.setCursor(0, 1);
  lcd.print("LOW");
  lcd.setCursor(11, 1);
  lcd.print("HIGH ");
  if (percentage <= 20)   {
    lcd.setCursor(0, 0);
    lcd.print("PMP ON  ");
    //digitalWrite(RELAYPIN, HIGH);
    //digitalWrite(EXTRELAYPIN, LOW);
    flag = 1;
    EEPROM.write(addr2, flag);
    flag = EEPROM.read(addr2);
    ZeroPercentage();
  }
  else if (percentage > 20 && percentage <= 100)
  {
    flag = EEPROM.read(addr2);
  }
  if (percentage > 20 && percentage <= 100 && flag == 1)
  {
    //digitalWrite(RELAYPIN, HIGH);
    //digitalWrite(EXTRELAYPIN, LOW);
    lcd.setCursor(0, 0);
    lcd.print("PMP ON  ");
  }
  else if (percentage > 20 && percentage <= 100 && flag == 0)
  {
    //digitalWrite(RELAYPIN, LOW);
    //digitalWrite(EXTRELAYPIN, HIGH);
    lcd.setCursor(0, 0);
    lcd.print("PMP OFF ");
  }
  else if (percentage > 100)
  {
    delay(500);
    lcd.setCursor(0, 0);
    lcd.print("PMP OFF ");
    lcd.setCursor(8, 0);
    lcd.print("Lev:");
    lcd.print("100");
    lcd.print("%	");
    //digitalWrite(RELAYPIN, LOW);
    //digitalWrite(EXTRELAYPIN, HIGH);
    flag = 0;
    EEPROM.write(addr2, flag);
    flag = EEPROM.read(addr2);
    HundredPercentage();
  }
  if (percentage <= 20)
  {
    ZeroPercentage();
  }
  else if (percentage > 20 && percentage <= 25)
  {
    TwentyFivePercentage();
  }
  else if (percentage > 25 && percentage <= 50)
  {
    FiftyPercentage();
  }
  else if (percentage > 50 && percentage <= 75)
  {
    SeventyFivePercentage();
  }
  else if (percentage > 75 && percentage <= 100)
  {
    HundredPercentage();
  }
  else if (percentage > 100)
  {
    HundredPercentage();
  }
  delay(1500);
  TankCap = (TankHeight * TankBrith * TankLenth / 1000);
  TankStore = ((ActualReading * TankBrith * TankLenth) / 1000);
  lcd.clear();
  lcd.setCursor(0, 0);
  //lcd.print(MaxWaterLevel);
  lcd.print("Cap: ");
  lcd.print(TankCap);
  lcd.print(" Ltr");
  //lcd.print(" ");
  //lcd.print(TankLenth);
  //lcd.print(" ");
  lcd.setCursor(0, 1);
  lcd.print("bal: ");
  if (TankStore > 999)
  {
    lcd.print(TankStore);
  }
  else
  {
    lcd.setCursor(6, 1);
    lcd.print(TankStore);
  }
  lcd.print(" Ltr.");
  delay(2000);

}

void ZeroPercentage() {
  lcd.setCursor(3, 1);
  lcd.write(byte(4));
  lcd.setCursor(4, 1);
  lcd.write(byte(4));
  lcd.setCursor(5, 1);
  lcd.write(byte(4));
  lcd.setCursor(6, 1);
  lcd.write(byte(4));
  lcd.setCursor(7, 1);
  lcd.write(byte(4));
  lcd.setCursor(8, 1);
  lcd.write(byte(4));
  lcd.setCursor(9, 1);
  lcd.write(byte(4));
  lcd.setCursor(10, 1);
  lcd.write(byte(4));
}

void TwentyFivePercentage() {
  lcd.setCursor(3, 1);
  lcd.write(byte(0));
  lcd.setCursor(4, 1);
  lcd.write(byte(0));
  lcd.setCursor(5, 1);
  lcd.write(byte(4));
  lcd.setCursor(6, 1);
  lcd.write(byte(4));
  lcd.setCursor(7, 1);
  lcd.write(byte(4));
  lcd.setCursor(8, 1);
  lcd.write(byte(4));
  lcd.setCursor(9, 1);
  lcd.write(byte(4));
  lcd.setCursor(10, 1);
  lcd.write(byte(4));
}

void FiftyPercentage()  {
  lcd.setCursor(3, 1);
  lcd.write(byte(0));
  lcd.setCursor(4, 1);
  lcd.write(byte(0));
  lcd.setCursor(5, 1);
  lcd.write(byte(1));
  lcd.setCursor(6, 1);
  lcd.write(byte(1));
  lcd.setCursor(7, 1);
  lcd.write(byte(4));
  lcd.setCursor(8, 1);
  lcd.write(byte(4));
  lcd.setCursor(9, 1);
  lcd.write(byte(4));
  lcd.setCursor(10, 1);
  lcd.write(byte(4));
}

void SeventyFivePercentage() {
  lcd.setCursor(3, 1);
  lcd.write(byte(0));
  lcd.setCursor(4, 1);
  lcd.write(byte(0));
  lcd.setCursor(5, 1);
  lcd.write(byte(1));
  lcd.setCursor(6, 1);
  lcd.write(byte(1));
  lcd.setCursor(7, 1);
  lcd.write(byte(2));
  lcd.setCursor(8, 1);
  lcd.write(byte(2));
  lcd.setCursor(9, 1);
  lcd.write(byte(4));
  lcd.setCursor(10, 1);
  lcd.write(byte(4));
}

void HundredPercentage()  {
  lcd.setCursor(3, 1);
  lcd.write(byte(0));
  lcd.setCursor(4, 1);
  lcd.write(byte(0));
  lcd.setCursor(5, 1);
  lcd.write(byte(1));
  lcd.setCursor(6, 1);
  lcd.write(byte(1));
  lcd.setCursor(7, 1);
  lcd.write(byte(2));
  lcd.setCursor(8, 1);
  lcd.write(byte(2));
  lcd.setCursor(9, 1);
  lcd.write(byte(3));
  lcd.setCursor(10, 1);
  lcd.write(byte(3));
}