ThriftyRentSystem.java

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.*;
import java.io.*;

/**
 * This the main class used to get details from the user and display the menu driven options
 * This class acts as the businedd layer in our applications
 */

class  ThriftyRentSystem{
	//cars and vans are two collections used to store cars of type Cars and vans of type Vans respectively
    private Car cars[] = new Car[50];
    private Van vans[] = new Van[50];

	public static DateFormat format = new SimpleDateFormat("dd/MM/yyyy"); //Basic format expected from the User

	/**
	 * This the method called from main method
	 * this contains the menudriven interface to communicate with the user
	 */
    public void run() {

		while (true) {

			System.out.println("\n**** ThriftyRent SYSTEM MENU ****\n");
			System.out.println("Add vehicle:            1");
			System.out.println("Rent vehicle:           2");
			System.out.println("Return vehicle:         3");
			System.out.println("Vehicle Maintenance:    4");
			System.out.println("Complete Maintenance:   5");
			System.out.println("Display All Vehicles:   6");
			System.out.println("Exit Program:           7");
			System.out.println("Enter your choice:");
			Scanner sc= new Scanner(System.in);
			int choice = Integer.parseInt(sc.nextLine());

			switch (choice) {
				case 1:
					this.add(sc); //Method used to add either cars or vans
					break;
				case 2:
					this.rent(sc); //Method used to rent either cars or vans
					break;
				case 3:
					this.returnCar(sc); //Method used to return a car after being rented
					break;
				case 4:
					this.vehicleMaintenance(sc); //Method used to set either car or van to maintenance
					break;
				case 5:
					this.completeMaintenance(sc);  //Method used to complete the maintenance
					break;
				case 6:
					this.getDetails();  //Method used to get the details of cars or vans if present
					break;
				case 7:
					sc.close(); //Closing the scanner if 7 is selected by the user
					return;

			}

		}
	}

	/**
	 * Used to add either cars or vans to the list
	 * @param //Scanner variable
	 * @return adds either car or van if the details are correct
	 */
    private void add(Scanner scan)
    {
		int i=0;
		String vehicleID="";
		int seats=0;
		String maintenanceDate=null;
		int perDayRent=0;
		System.out.print("Vehicle Type(Van or Car): ");
		String vehicleType = scan.nextLine();
		while (!(vehicleType.equalsIgnoreCase("car") ||vehicleType.equalsIgnoreCase("van")))
		{
			System.out.print("Please enter either van or car: ");
			vehicleType = scan.nextLine();
		}
		System.out.print("Year: ");
		int year = Integer.parseInt(scan.nextLine());
		while (year<0 || year >2019)
		{
			System.out.println("Please enter a valid year");
			year=Integer.parseInt(scan.nextLine());
		}

		System.out.print("Make: ");
		String make = scan.nextLine();
		System.out.print("Model: ");
		String model = scan.nextLine();

		if(vehicleType.equals("car")) {
			System.out.print("Vehicle ID: C_");
			vehicleID = scan.nextLine();
			vehicleID = "C_"+vehicleID;
			if(this.cars[0]!=null && vehicleID.contains("C_"))
			{
				for(i=0;this.cars[i]!=null;i++){
					if ((this.cars[i].getVehicleId()).equals(vehicleID))
					{
						System.out.println("ID Already used, Please add a new vehicle");
						return;
					}
				}
			}
			System.out.print("Number of seats: ");
			seats = Integer.parseInt(scan.nextLine());
			while ((seats != 4 && seats != 7)) {
				System.out.println("Please enter seats as either 4 or 7");
				seats = Integer.parseInt(scan.nextLine());
			}
			if(i<50){
				Vehicle newVehicle= new Car(vehicleID,year,make,model,0,new VehicleType(seats));
				this.cars[i]= (Car) newVehicle;
				System.out.println(newVehicle.toString());
			}
		}
		if(vehicleType.equalsIgnoreCase("van"))
		{
			System.out.print("Vehicle ID: V_");
			vehicleID = scan.nextLine();
			vehicleID="V_"+vehicleID;
			if(this.vans[0]!=null && vehicleID.contains("V_"))
			{
				for(i=0;this.vans[i]!=null;i++){
					if ((this.vans[i].getVehicleId()).equals(vehicleID))
					{
						System.out.println("ID Already used, Please add a new vehicle");
						return;
					}
				}
			}
			seats = 15;
			System.out.print("Last Maintenance (dd/mm/yyyy): ");
			maintenanceDate = scan.next();
			format.setLenient(false);
			while(maintenanceDate.trim().length() != ((SimpleDateFormat) format).toPattern().length())
			{
				System.out.println("Please enter a valid date in the format dd/mm/yyyy: ");
				maintenanceDate = scan.nextLine();
			}
			String dateSplit[] = maintenanceDate.split("/");
			DateTime Lastmain= new DateTime(Integer.parseInt(dateSplit[0]),Integer.parseInt(dateSplit[1]),Integer.parseInt(dateSplit[2]));
			if(i<50){
				Vehicle newVehicle= new Van(vehicleID,year,make,model,0,new VehicleType(seats,Lastmain));
				this.vans[i]= (Van) newVehicle;
				System.out.println(newVehicle.toString());
			}
		}


    }


	/**
	 * Used to rent either available car or available van
	 * @param //Scanner variable
	 * @return Rents a car or van if the details are correct
	 */
	private void rent(Scanner sc)
	{
		System.out.print("Vehicle id: ");
		String id = sc.nextLine();
		String type="";

		if(id.contains("C_") && this.cars[0]==null)
		{
			System.out.println("There are no cars currently at the moment.");
			return;
		}
		if(id.contains("V_") && this.vans[0]==null)
		{
			System.out.println("There are no vans currently at the moment.");
			return;
		}
		if(this.cars[0]!=null && id.contains("C_"))
        {
			boolean flag =false;
            for(int i=0;this.cars[i]!=null;i++){
                if ((this.cars[i].getVehicleId()).equals(id))
                {
					if(this.cars[i].vehicleStatus!=0)
					{
						System.out.println("The car with ID : "+id+" is already either rented or under maintenance, please choose another car.");
						return;
					}

				   type="car";
                   flag=true;
				   break;
                }
            }
			if(!flag)
			{
				System.out.println("ID is incorrect, please try again!");
				return;
			}
        }
		if(this.vans[0]!=null && id.contains("V_"))
        {
			boolean flag =false;
            for(int i=0;this.vans[i]!=null;i++){
                if ((this.vans[i].getVehicleId()).equals(id))
                {
					if(this.vans[0].vehicleStatus!=0)
					{
						System.out.println("The van with ID : "+id+" is already either rented or under maintenance. \nPlease choose another van.");
						return;
					}
					type="van";
                   flag=true;
				   break;
                }
            }
			if(!flag)
			{
				System.out.println("Id is incorrect, please try again!");
				return;
			}
        }
		if(!(id.contains("V_") || id.contains("C_")))
		{
			System.out.println("Please Enter a Valid ID either starting from 'V_' or 'C_'.");
			return;
		}

	System.out.print("Customer ID: ");
	String cusId = sc.next();
	System.out.print("Rent date( dd/mm/yyyy): ");
	String date = sc.next();
		format.setLenient(false);
		while(date.trim().length() != ((SimpleDateFormat) format).toPattern().length())
		{
			System.out.println("Please enter a valid date in the format dd/mm/yyyy: ");
			date = sc.nextLine();
		}
	String dates[] = date.split("/");
	DateTime rentDate= new DateTime(Integer.parseInt(dates[0]),Integer.parseInt(dates[1]),Integer.parseInt(dates[2]));
	System.out.print("How many days?: ");
	int days= sc.nextInt();
	if(type.equals("car")) {
		for(int i=0;this.cars[0]!=null;i++){
                if ((this.cars[i].getVehicleId()).equals(id))
                {
				   if(this.cars[i].rent(cusId,rentDate,days))
				   break;
			       else{
					   System.out.println("Vehicle "+id+" could not be rented.");
					   return;
				   }
                }
            }
		System.out.println("Vehicle "+id+" is now rented by customer "+cusId);
	}
	
	if(type.equals("van")) {
		for(int i=0;this.vans[i]!=null;i++){
                if ((this.vans[i].getVehicleId()).equals(id))
                {
				   if(this.vans[i].rent(cusId,rentDate,days))
				   break;
			       else{
					   System.out.println("Vehicle "+id+" could not be rented");
					   return;
				   }
                }
            }
		System.out.println("Vehicle "+id+" is now rented by customer "+cusId);
	}

	}

	/**
	 * Used to return a rented car or van
	 * @param //Scanner variable
	 * @return prints the details of the car along with rental fee and charges if it is returned late
	 */
	private void returnCar(Scanner sc)
	{
		System.out.print("VehicleId: ");
		String id = sc.next();

		if(this.cars[0]==null )
		{
			System.out.println("There are no cars, please add cars.");
			return;
		}
		if(this.vans[0]==null )
		{
			System.out.println("There are no vans, please add cars.");
			return;
		}
		if(this.cars[0]!=null && id.contains("C_"))
        {

			boolean flag =false;
            for(int i=0;this.cars[i]!=null;i++){

                if ((this.cars[i].getVehicleId()).equals(id))
                {
				   System.out.print("Return date( dd/mm/yyyy): ");
				   String date = sc.next();
				   String dates[] = date.split("/");
				   DateTime returnDate= new DateTime(Integer.parseInt(dates[0]),Integer.parseInt(dates[1]),Integer.parseInt(dates[2]));
				   if(this.cars[i].returnVehicle(returnDate)){
					   System.out.println(this.cars[i].records[this.cars[i].getLastElementIndex()].getDetails());
				   }
				   else{
					   System.out.println("Vehicle cannot be returned as it may have been never rented");
					   return;
				   }
                   flag=true;
				   break;
                }

            }
			if(!flag)
			{
				System.out.println("Id is incorrect");
				return;
			}
        }
		if(this.vans[0]!=null && id.contains("V_"))
        {
			boolean flag =false;
            for(int i=0;this.vans[i]!=null;i++){
                if ((this.vans[i].getVehicleId()).equals(id))
                {
					System.out.print("Return date( dd/mm/yyyy): ");
					String date = sc.next();
					String dates[] = date.split("/");
					DateTime returndate= new DateTime(Integer.parseInt(dates[0]),Integer.parseInt(dates[1]),Integer.parseInt(dates[2]));
					if(this.vans[i].returnVehicle(returndate)){
					   System.out.println(this.vans[i].records[this.vans[i].getLastElementIndex()].getDetails());
				   }
				   else{
					   System.out.println("Vehicle cannot be returned");
					   return;
				   }
					flag=true;
					break;
                }
            }
			if(!flag)
			{
				System.out.println("Id is incorrect");
				return;
			}
        }		
	}

	/**
	 * Method used to set either car or van to maintenance
	 * @param //Scanner variable
	 * @return prints appropriate message if sent for maintenance
	 */
	
	private void vehicleMaintenance(Scanner sc){
		System.out.print("Vehicle id: ");
		String id = sc.next();
		if(this.cars[0]==null )
		{
			System.out.println("There are no cars, please add cars.");
			return;
		}
		if(this.vans[0]==null )
		{
			System.out.println("There are no vans, please add cars.");
			return;
		}
		
		if(this.cars[0]!=null && id.contains("C_"))
        {
			boolean flag =false;
            for(int i=0;this.cars[i]!=null;i++){
                if ((this.cars[i].getVehicleId()).equals(id))
                {
				   if(this.cars[i].performMaintenance())
					   System.out.println("Vehicle "+id+" is now under maintenance");
				   else{
					   System.out.println("Vehicle "+id+" could not be sent for maintenance");
					   return;
				   }
                   flag=true;
				   break;
                }
            }
			if(!flag)
			{
				System.out.println("Id is incorrect");
				return;
			}
        }
		if(this.vans[0]!=null && id.contains("V_"))
        {
			boolean flag =false;
            for(int i=0;this.vans[i]!=null;i++){
                if ((this.vans[i].getVehicleId()).equals(id))
                {
					if(this.vans[i].performMaintenance())
					   System.out.println("Vehicle "+id+" is now under maintenance");
				   else{
					   System.out.println("Vehicle "+id+" could not be sent for maintenance");
					   return;
				   }
					flag=true;
					break;
                }
            }
			if(!flag)
			{
				System.out.println("Id is incorrect");
				return;
			}
        }		
	}

	/**
	 * Method used to complete maintenance of either car or van
	 * @param //Scanner variable
	 * @return prints appropriate message after completing maintenance
	 */
	private void completeMaintenance(Scanner sc)
	{
		System.out.print("Enter vehicle ID: ");
		String id = sc.next();
		if(this.cars[0]==null )
		{
			System.out.println("There are no cars, please add cars.");
			return;
		}
		if(this.vans[0]==null )
		{
			System.out.println("There are no vans, please add cars.");
			return;
		}
		if(this.cars[0]!=null && id.contains("C_"))
        {
			boolean flag =false;
            for(int i=0;this.cars[i]!=null;i++){
                if ((this.cars[i].getVehicleId()).equals(id))
                {
				    System.out.print("Maintenance completion date (dd/mm/yyyy): ");
				    String date = sc.next();
				   if(this.cars[i].completeMaintenance())
					   System.out.println("Vehicle "+id+" has all maintenance completed and ready for rent");
				   else{
					   System.out.println("Vehicle "+id+" could not complete maintenance");
					   return;
				   }
                   flag=true;
				   break;
                }
            }
			if(!flag)
			{
				System.out.println("ID is incorrect, Please try again");
				return;
			}
        }
		if(this.vans[0]!=null && id.contains("V_"))
        {
			boolean flag =false;
            for(int i=0;this.vans[i]!=null;i++){
                if ((this.vans[i].getVehicleId()).equals(id))
                {
					System.out.print("Maintenance completion date (dd/mm/yyyy) :");
				    String date = sc.next();
					String dates[] = date.split("/");
					DateTime maintenanceDate= new DateTime(Integer.parseInt(dates[0]),Integer.parseInt(dates[1]),Integer.parseInt(dates[2]));
					if(this.vans[i].completeMaintenance(maintenanceDate))
					   System.out.println("Vehicle "+id+" has all maintenance completed and ready for rent");
				   else{
					   System.out.println("Vehicle "+id+" could not complete maintenance");
					   return;
				   }
					flag=true;
					break;
                }
            }
			if(!flag)
			{
				System.out.println("Id is incorrect");
				return;
			}
        }		
	}

	/**
	 * Method used to get details of car or van with their rental history
	 */
	
	private void getDetails()
	{
		if(cars[0]!=null && vans[0]!=null)
		{
			System.out.println("There are no cars or vans to display, please enter some vehicles and try again");
			return;
		}
		if(cars[0]!=null)
		{
			System.out.println("***********Cars**********");
			for (int i = 0; this.cars[i] != null; i++)
				System.out.println(this.cars[i].getDetails());
		}
		if(vans[0]!=null)
		{
			System.out.println("***********Vans**********");
			for (int i = 0; this.vans[i] != null; i++)
				System.out.println(this.vans[i].getDetails());
		}
	}
}