#include <Servo.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>

#include <SPI.h>
#include <MFRC522.h>

#define RST_PIN         9          // Configurable, see typical pin layout above
#define SS_PIN          10         // Configurable, see typical pin layout above

MFRC522 mfrc522(SS_PIN, RST_PIN);  // Create MFRC522 instance


Servo myservo; //Servo In

typedef struct Data
{
    unsigned long int uID;
    int userBalance;
    String Name;
    String carModel;
    int uCost;
} Data;

Data DataOfUser[5];
int curUser = 0;

//Intitalising User
void initUser()
{
    DataOfUser[0].uID = 4294944795;
    DataOfUser[0].userBalance = 1000;
    DataOfUser[0].Name = "SAH";
    DataOfUser[0].carModel = "Tesla";
    DataOfUser[0].uCost = 100;

    DataOfUser[1].uID = 4294961165;
    DataOfUser[1].userBalance = 150;
    DataOfUser[1].Name = "FF";
    DataOfUser[1].carModel = "Toyotoa";
    DataOfUser[1].uCost = 60;

    curUser = 2;

}




void OpentheGate()
{
    for (int i = 10; i <= 70; i += 1)   // goes from 0 degrees to 180 degrees
    {
        // in steps of 1 degree
        myservo.write(i);              // tell servo to go to position in variable 'pos'
        delay(15);                       // waits 15ms for the servo to reach the position
        //  Serial.println(i);

    }

}

void ClosetheGate()
{
    for (int i = 70; i >= 10; i -= 1)   // goes from 180 degrees to 0 degrees
    {
        myservo.write(i);              // tell servo to go to position in variable 'pos'
        delay(15);                       // waits 15ms for the servo to reach the position
    }


}


// Set the LCD address to 0x27 for a 16 chars and 2 line display
LiquidCrystal_I2C lcd(0x27, 16, 2);


unsigned long getID()
{
    if ( ! mfrc522.PICC_ReadCardSerial())   //Since a PICC placed get Serial and continue
    {
        return -1;
    }
    unsigned long hex_num;
    hex_num =  mfrc522.uid.uidByte[0] << 24;
    hex_num += mfrc522.uid.uidByte[1] << 16;
    hex_num += mfrc522.uid.uidByte[2] <<  8;
    hex_num += mfrc522.uid.uidByte[3];
    mfrc522.PICC_HaltA(); // Stop reading
    return hex_num;
}

void StartDisplay(){
  lcd.clear();
  delay(1000);
  lcd.setCursor(5,1);
  lcd.print("A Project");
  delay(1600);

  lcd.clear();
  lcd.setCursor(8,1);
  lcd.print("of");
  delay(1200);

  lcd.clear();
  lcd.setCursor(7,1);
  lcd.print("GRAND");
  delay(1200);

  lcd.clear();
  lcd.setCursor(6,1);
  lcd.print("ROBOTICS");
  delay(1200);

  lcd.clear();
  lcd.setCursor(4,1);
  lcd.print("DEMOSTRATION");
  delay(1200);

  lcd.clear();
  lcd.setCursor(7,1);
  lcd.print("CLASS");
  delay(2000);
  lcd.clear();
}


void setup()
{
    Serial.begin(9600);   // Initialize serial communications with the PC

    SPI.begin();      // Init SPI bus
    mfrc522.PCD_Init();   // Init MFRC522
    delay(4);       // Optional delay. Some board do need more time after init to be ready, see Readme
    myservo.attach(7);
    mfrc522.PCD_DumpVersionToSerial();  // Show details of PCD - MFRC522 Card Reader details
    Serial.println(F("Scan PICC to see UID, SAK, type, and data blocks..."));
    // initialize the LCD
    lcd.begin();
    initUser();
    myservo.write(10);
    StartDisplay();
}


void welcomeMessage()
{
    lcd.clear();
    lcd.setCursor(0, 1);
    lcd.print("  Welcome to STCS");

}

void goodBye()
{
    lcd.clear();
    lcd.setCursor(0, 1);
    lcd.print("     Good Bye!");
    ClosetheGate();
    delay(2000);


}
void displayUserData(int id)
{
    delay(1000);
    lcd.clear();


    if (DataOfUser[id].userBalance < DataOfUser[id].uCost )
    {
        lcd.setCursor(0,1);
        lcd.print("Insufficient Balance");
        lcd.setCursor(0, 2);
        lcd.print("  Please Recharge!");
        delay(3000);
        return;
    }

    DataOfUser[id].userBalance -= DataOfUser[id].uCost;
    lcd.setCursor(0, 1);
    lcd.print("Name: " + DataOfUser[id].Name);
    lcd.setCursor(0, 2);
    lcd.print("Vehicle: " + DataOfUser[id].carModel);
    delay(2000);
    lcd.clear();

    lcd.setCursor(0, 1);
    lcd.print("Fee: ");
    lcd.print(DataOfUser[id].uCost, DEC);
    lcd.setCursor(0,2);
    lcd.print("Balance: ");
    lcd.print(DataOfUser[id].userBalance, DEC);
    OpentheGate();
    delay(5000);
    goodBye();


}

void TollCollect(unsigned long int id)
{

    for (int i = 0; i < curUser; i++)
    {
        Serial.println(DataOfUser[i].uID);
        if (DataOfUser[i].uID == id)
        {

            displayUserData(i);
        }
    }

}

void loop()
{
    welcomeMessage();

    if (mfrc522.PICC_IsNewCardPresent())
    {
        unsigned long uid = getID();

        if (uid != -1)
        {
            TollCollect(uid);
        }
    }


}