intMain(uPDATEEDDD)

#include <iostream>

#include <stdlib.h> //for exit() function

#include <fstream>  //for creating text file

#include "Car.h"   //child class

using namespace std;
clear
//Global variables
string manufacturer, type, carPlateNo, model;
int seat;
const int SIZE = 80; //SIZE is the number of objects that the c[] array can store
Car c[SIZE]; //c[SIZE] is an array used to store all 80 car details
string option; //vairable for y/n choices
int choice; //choice is used for user selections(in menu selection, type selection)
int total = 0; //total recorded cars(used to keep count of total cars)
int main();

//Type options/selection(used in addRecord() & updateRecord())
string funcType() {
  string type;
  cout << "Select the type of the car\n " <<
    "1.Hatchback\n" <<
    " 2.Sedan\n" <<
    " 3.MPV\n" <<
    " 4.SUV\n" <<
    " 5.Crossover\n" <<
    " 6.Coupe\n" <<
    " 7.Convertible\n" <<
    " 8.Others \n";

  cout << "Choice: ";
  cin >> choice;
  cin.clear();
  cin.ignore(1, '\n');

  switch (choice) {

  case 1:
    return "Hatchback";
    break;

  case 2:
    return "Sedan";
    break;

  case 3:
    return "MPV";
    break;

  case 4:
    return "SUV";
    break;

  case 5:
    return "Crossover";
    break;

  case 6:
    return "Coupe";
    break;

  case 7:
    return "Convertible";
    break;

  case 8:
    cout << "Enter Type: ";
    getline(cin, type);
    return type;
    break;

  default:
    //print error messege and allow user to re-enter choice
    cout << choice << " is not valid choice. Please choose again" << endl;
    return funcType();
  }
}

//Detects special characters and certain alphabets in car plate number(used in addRecord() & updateRecord())
char checker(string carPlateNo) {
  char cpnError;
  string cpnc(carPlateNo);

  if (cpnc.find_first_not_of("abcdefghjklmnpqrstuvwxyABCDEFGHJKLMNPQRSTUVWXY0123456789 ") != string::npos) { //check until the end of the string
    cout << "Error. There are only alphabets(except for I,O & Z) and numbers in a car plate number.\n";

    return cpnError = 'a';
  } else {
    return cpnError = 'b';
  }

}

//Detects if there is anything other than y or n ((used in addRecord() & updateRecord())
string checker2(string option) {
  string ynError(option);

  if (ynError.find_first_not_of("ynYN") != string::npos) {
    cout << "Invalid input. Only 'y' or 'n'." << endl;
    return ynError = "a";
  } else {
    return ynError = "b";
  }

}

//+1 total recorded cars(used in addRecord())
void myPlus() {
  total++;
}

//-1 total recorded cars(used in deleteRecord())
void myMinus() {
  total--;
}

//OPTION 1: Creating cars
void addRecord() {
  cout << "------------------=CREATE=------------------" << endl;
  cout << "Note: Only a maximum of 80 cars can be created." << endl;
  cout << "------------------Car #" << total + 1 << "-------------------" << endl;

  //Manufacturer
  cout << "Please enter the manufacturer of the car: ";
  getline(cin, manufacturer);
  c[total].setManufacturer(manufacturer);

  //Type
  c[total].setType(funcType());

  //SeatNumber
  string ynError; //ynError is used to check for anything other than y or n
  do {
    cout << "Do you know what is the number of seats?(y/n)\n";
    cin >> option;
    ynError = checker2(option);
  } while ((ynError == "a")); //loop if option has anything other then y or n

  if ((option == "y") || (option == "Y")) {
    do {
      cin.clear();
      cin.ignore(1000, '\n');
      cout << "Please enter number of seats: \n";
      cin >> seat;

      if ((cin.fail()) || (seat <= 0)) {
        cout << endl;
        cout << "Invalid input. Please key in a positive integer." << endl; //print error message
      }

    } while ((cin.fail()) || (seat <= 0)); //condition to loop and allow user to re-enter

    c[total].setSeat(seat);
  } else {
    c[total].setSeat(1); //seats number is set to 1 if it is unknown(default)
  }

  //Car Plate Number
  char cpnError; //cpnError is used to check for special characters and certain alphabets
  cout << "Please enter the car plate number(e.g.: PNM1234): \n";
  cin.ignore(1, '\n');
  getline(cin, carPlateNo);
  cpnError = checker(carPlateNo);

  if (cpnError == 'a') { //if carPlateNo have any special characters or certain alphabets
    do {
      cout << "Please enter the car plate number(e.g.: PNM1234): \n";
      getline(cin, carPlateNo);
      cpnError = checker(carPlateNo);
    } while (cpnError == 'a'); //will loop and allow user to re-enter if special characters/certain alphabets was entered
  }
  c[total].setCarPlateNo(carPlateNo);

  //Model
  cout << "Please enter the model of the car: \n";
  getline(cin, model);
  c[total].setModel(model);

  //+1 to total
  myPlus();

  cout << "-------------------------------------------" << endl;

  cout << "Press enter to continue . . .";
  cin.clear();
  cin.ignore(1000, '\n');
  system("clear"); //erase previous output
  main(); //return to main() function
}

//OPTION 2: OPTION 1: Display only one car of user's choice
void disCar() {
  int sd; //sd(single display) is the number of the car that user wants to display;
  do {
    //user selects which car they want to display
    cout << "Enter 1 to display the first car that was created,2 for the second, etc." << endl;
    cout << "Please enter which vehicle you want to display: ";
    cin >> sd;
    //checks if the user chose within the number of recorded cars
    if ((sd <= 0) || (sd > total) || (cin.fail())) {
      system("clear");
      cout << "Invalid input. You only have " << total << " car(s) in the car record." << endl <<
        "Please enter a number within range." << endl;
      cout << endl;
    }
  } while ((sd <= 0) || (sd > total) || (cin.fail())); //allow user to re-enter

  //Print user's selected car details
  cout << "------------------Car #" << sd << "------------------" << endl;
  c[sd - 1].display();
  cout << "-------------------------------------------" << endl;

  getchar(); //pauses screen before previous output is erased
  cout << "Press enter to continue . . .";
  cin.clear();
  cin.ignore(1000, '\n');
  system("clear");
  main();

}

//OPTION 2: OPTION 2: Display all cars that is in the records
void disCreated() {
  for (int i = 0; i < total; i++) {
    cout << "------------------Car #" << i + 1 << "------------------" << endl;
    c[i].display();
    cout << "-------------------------------------------" << endl;
  }

  cout << "Press enter to continue . . .";
  getchar();
  system("clear");
  main();
}

//OPTION 2: Display Options Menu
void displayRecord() {
  cout << "Select the choice"<<endl
    <<"1.Display a single car" <<endl
    <<"2.Display all cars in the car record"<<endl;

  cout << "Choice: ";
  cin >> choice;
  cin.clear();
  cin.ignore(1, '\n');
  system("clear");

  switch (choice) {
  case 1:
    //print error messege to user when there is no cars in record
    if (total == 0) {
      cout << "You have no created cars available." << endl;
      main();
    }
    //goes to disCar() function (display single car)
    disCar();
    break;

  case 2:
    if (total == 0) {
      cout << "You have no created cars available." << endl;
      main();
    }
    disCreated();
    break;

  default:
    //print error messege and allow user to re-enter choice
    cout << choice << " is not valid choice" << endl;
    displayRecord();
  }
}

//OPTION 3: Updating/Overriding previous car details of user's choice
//Note: updateRecord() is similar to addRecord()
void updateRecord() {
  int u; //u is the number of the vehicle that user wants to update;
  cout << "------------------=UPDATE=------------------" << endl;

  do {
    //user selects which car they want to update
    cout << "Enter 1 to update the first cars that was created,2 for the second, etc." << endl;
    cout << "Please enter which vehicle you want to update: ";
    cin >> u;
    //checks if the user chose within the number of recorded cars
    if ((u <= 0) || (u > total) || (cin.fail())) {
      system("CLS");
      cout << "Invalid input. You only have " << total << " car(s) in the car record." << endl <<
        "Please enter a number within range." << endl;
        cin.clear();
        cin.ignore(1000,'\n');
      cout << endl;
    }
  } while ((u <= 0) || (u > total) || (cin.fail()));

  //Prints details of the car user wants to update
  cout << endl;
  cout << "------------------Current Car #" << u << "------------------" << endl;
  c[u - 1].display();
  cout << "-------------------------------------------" << endl;
  cout << endl;

  //Manufacturer
  cout << "Please enter the manufacturer of the car: ";
  cin.clear();
  cin.ignore(1000, '\n');
  getline(cin, manufacturer);
  c[u - 1].setManufacturer(manufacturer);

  //Type
  c[u - 1].setType(funcType());

  //SeatNumber
  string ynError;
  do {
    cout << "Do you know what is the number of seats?(y/n)\n";
    cin >> option;
    ynError = checker2(option);
  } while ((ynError == "a"));

  if ((option == "y") || (option == "Y")) {
    do {
      cin.clear();
      cin.ignore(1000, '\n');
      cout << "Please enter number of seats: \n";
      cin >> seat;

      if ((cin.fail()) || (seat <= 0)) {
        cout << endl;
        cout << "Invalid input. Please key in a positive integer." << endl; //print error message
      }

    } while ((cin.fail()) || (seat <= 0)); //condition to loop and allow user to re-enter

    c[total].setSeat(seat);
  } else {
    c[total].setSeat(1); //seats number is set to 1 if it is unknown(default)
  }

  //Car Plate Number
  char cpnError; //cpnError is used to check for special characters and certain alphabets
  cout << "Please enter the car plate number(e.g.: PNM1234): \n";
  cin.ignore(1, '\n');
  getline(cin, carPlateNo);
  cpnError = checker(carPlateNo);

  if (cpnError == 'a') { //if carPlateNo have any special characters or certain alphabets
    do {
      cout << "Please enter the car plate number(e.g.: PNM1234): \n";
      getline(cin, carPlateNo);
      cpnError = checker(carPlateNo);
    } while (cpnError == 'a'); //will loop and allow user to re-enter if special characters/certain alphabets was entered
  }
  c[u - 1].setCarPlateNo(carPlateNo);

  //Model
  cout << "Please enter the model of the car: \n";
  getline(cin, model);
  c[u - 1].setModel(model);

  cout << "-------------------------------------------" << endl;

  cout << "Press enter to continue . . .";
  cin.clear();
  cin.ignore(1000, '\n');
  system("CLS");
  main();
}

//OPTION 4: Delete a car of user's choice
void deleteRecord() {
  string ynError;
  int d; //d is number of the car that user wants to delete;
  cout << "------------------=DELETE=------------------" << endl;

  do {
    //user selects which car they want to delete
    cout << "Enter 1 to delete the first car that was created,2 for the second, etc." << endl;
    cout << "Please enter which car you want to delete: ";
    cin >> d;
    if ((d <= 0) || (d > total) || (cin.fail())) {
      system("clear");
      cout << "Invalid input. You only have " << total << " car(s) in the car record." << endl <<
        "Please enter a number within range." << endl;
      cout << endl;
    }
  } while ((d <= 0) || (d > total) || (cin.fail()));
  cout << "------------------Car #" << d << "------------------" << endl;
  c[d - 1].display();
  cout << "-------------------------------------------" << endl;
  cout << endl;

    do {
      cout << "Are you sure you want to delete this car?(y/n)" << endl;
      cin.clear();
      cin.ignore();
      cin >> option;
      ynError = checker2(option);
    } while (ynError == "a");

    if ((option == "y") || (option == "Y")) {
      for (int i = d - 1; i < SIZE - 1; i++) {
        c[i] = c[d]; //replaces a car's details with details of the next car starting from the car that the user chose to delete
        d++;
      }
      c[SIZE - 1] = Car(); //give the last car(car #80) default values

      myMinus();
    }

  cout << "Press enter to continue . . .";
  cin.clear();
  cin.ignore(1000, '\n');
  system("CLS");
  main();
}

//OPTION 5: Creating a .txt file(To save car record)
void textFile() {
  //declare variables
  string fileName, ma, ty, cpn, mo;
  int se;

  cout << "------------------=Create Txt File=------------------" << endl;
  //Create file with the file name user entered
  cout << "Enter file name: ";
  cin >> fileName;
  cout << "Your .txt file can be found in the same folder where your .cpp file is saved." << endl;
  fileName = fileName + ".txt";

  //output to .txt file
  ofstream file(fileName.c_str());

  if (file.is_open()) {
    //output all the cars in car record
    for (int i = 0; i < total; i++) {
      file << "------------------Car #" << i + 1 << "------------------" << endl;
      ma = c[i].getManufacturer(); //get the manufacturer value of the car stored in the array
      file << "Manufacturer: " << ma << endl;
      ty = c[i].getType();
      file << "Type: " << ty << endl;
      se = c[i].getSeat();
      file << "Seat: " << se << endl;
      cpn = c[i].getCarPlateNo();
      file << "Car Plate Number: " << cpn << endl;
      mo = c[i].getModel();
      file << "Model: " << mo << endl;
      file << "-------------------------------------------" << endl;
    }
    file.close(); //close file
  }
  cin.get();
  cout << "-----------------------------------------------------" << endl;

  cout << "Press enter to continue . . .";
  cin.clear();
  cin.ignore(1000, '\n');
  system("CLS");
  main();
}

int main() {
  cout << "===============WELCOME TO CAR MANAGEMENT SYSTEM===============" << endl;
  cout << "Please enter your selection" << endl <<
    "1. Create new car" << endl <<
    "2. View car(s)" << endl <<
    "3. Update car" << endl <<
    "4. Delete  " << endl <<
    "5. Create txt file" << endl <<
    "6. Exit" << endl;

  cout << "Choice: ";
  cin >> choice;
  cin.clear();
  cin.ignore(1, '\n');
  system("clear");

  switch (choice) {
  case 1:
    if (total == 80) {
      cout << "You have reached the maximum number of cars that can be created" << endl;
    }
    addRecord();
    break;

  case 2:
    displayRecord();
    break;

  case 3:
    //print error messege to user when there is no cars in record
    if (total == 0) {
      cout << "You have no created cars available." << endl;
      main();
    }
    updateRecord();
    break;

  case 4:
    if (total == 0) {
      cout << "You have no created cars available." << endl;
      main();
    }
    deleteRecord();
    break;

  case 5:
    textFile();
    break;

  case 6:
    exit(1); //behaves like return 1 and ends the program
    break;

  default:
    cout << choice << " is not valid choice" << endl;

    main();
  }

  return 0;
}