import java.io.*;
public class BusReservationAndTicketingSystem {

    public static void main(String args[]) throws IOException {
    BufferedReader in = new BufferedReader(new InputStreamReader(System.in));

    String user,password,yn,search,again,choice;
    int to=0,y=1,z=0,end=0,r=1;
    int available[] = new int[6];
    int ticketI[][] = new int [100][3];
    String ticketS[][] = new String[100][3];
    double ticketD[][] = new double [100][3];
    double pay[] = new double[20];
    double change[] = new double[20];

    for(int i=1;i<4;){
        System.out.print("Enter User: ");
        user = in.readLine();
        System.out.print("Enter Password: ");
        password = in.readLine();

        //"available[]" is the SEAT AVAILABLE//
        //store 20 seats every destination [1-5]//
        for(int o=1; o<=5; o++){
            available[o]=20;
        }

        //if user and password are correct proceed to MAIN MENU//
        if(user.equals("1") && password.equals("1")){

            for(int x=1; x==1;){
                //the MAIN MENU//
                System.out.println("********************************************");
                System.out.println("** BUS RESERVATION AND TICKETING SYSTEM   **");
                System.out.println("********************************************");
                System.out.println("** [1] Destination                   **");
                System.out.println("** [2] Passengers                    **");
                System.out.println("** [3] Billing                       **");
                System.out.println("** [4] View                          **");
                System.out.println("** [5] Exit                          **");
                System.out.println("***************************************");
                System.out.println("***************************************\n");

                for(x=1; x==1;){
                    System.out.print("ENTER CHOICE: ");
                    choice=in.readLine();

                    //if CHOICE is "1" display the DESTINATION//
                    if (choice.equals("1")){
                        //the DESTINATION DETAILS//
                        //display the "Destination", every destination "Fare", and the "Seat" available//
                        System.out.println("***************************************");
                        System.out.println("**   DESTINATION   |  FARE  |  SEAT  **");
                        System.out.println("***************************************");
                        System.out.println("** 1.)DAVAO CITY   | Php600 |   "+available[1]+"   **");
                        System.out.println("** 2.)BUTUAN CITY  | Php170 |   "+available[2]+"   **");
                        System.out.println("** 3.)CABADBARAN   | Php150 |   "+available[3]+"   **");
                        System.out.println("** 4.)TANDAG       | Php200 |   "+available[4]+"   **");
                        System.out.println("** 5.)CAGAYAN      | Php250 |   "+available[5]+"   **");
                        System.out.println("***************************************");
                        System.out.println("***************************************\n");
                        System.out.println("PWD, STUDENT, & SENIOR CITIZEN with 20% DISCOUNT!!!\n");
                        x=0;
                    }

                    //if CHOICE is "2" proceed to Ticket Booking//
                    else if (choice.equals("2")){
                        int print=1;



                        //display first the Destination Details//
                        System.out.println("***************************************");
                        System.out.println("**   DESTINATION   |  FARE  |  SEAT  **");
                        System.out.println("***************************************");
                        System.out.println("** 1.)DAVAO CITY   | Php600 |   "+available[1]+"   **");
                        System.out.println("** 2.)BUTUAN CITY  | Php170 |   "+available[2]+"   **");
                        System.out.println("** 3.)CABADBARAN   | Php150 |   "+available[3]+"   **");
                        System.out.println("** 4.)TANDAG       | Php200 |   "+available[4]+"   **");
                        System.out.println("** 5.)CAGAYAN      | Php250 |   "+available[5]+"   **");
                        System.out.println("***************************************");
                        System.out.println("***************************************\n");
                        System.out.println("PWD, STUDENT, & SENIOR CITIZEN with 20% DISCOUNT!!!\n");

                        if((available[1]==0)&&(available[2]==0)&&(available[3]==0)&&(available[4]==0)&&(available[5]==0)){
                            System.out.println("Sorry, We don't  have available seats for all Destination!");
                            x=0;

                        }



                        //inputing of Passenger's Name//
                        else{
                        for(x=1; x==1;){
                            System.out.print("\nENTER PASSENGER'S NAME: ");
                            ticketS[z][0] = in.readLine();

                            x=0;

                            //if Passenger's Name already used, display error and go back to Inputing//
                            for(int l=0; l<z; l++){
                                if(ticketS[l][0].equalsIgnoreCase(ticketS[z][0])){
                                    System.out.println("Sorry, Passenger's name have already used!");
                                    x=1;
                                }
                            }
                        }

                        //inputing of Destination//
                        //integers Only [1-5]//
                        for(x=1; x==1;){
                            System.out.print("ENTER DESTINATION: ");
                            to = Integer.parseInt(in.readLine());

                            //if Inputed integers are "<1" or ">5", display error and go back to Inputing//
                            if(to<1 || to>5){
                                System.out.println("Invalid Input!");
                                x=1;
                            }
                            //if available seat is eqaul to "Zero", display error and go back to Inputing//
                            for(int d=1; d<=5; d++){
                                if(to==d){
                                    if(available[to]==0){
                                        System.out.println("Sorry, We don't have available seat!");
                                        x=1;
                                    }
                                    x=0;
                                }
                            }
                        }

                        //convert the integer to string//
                        String dest[] = { " ", "DAVAO CITY", "BUTUAN CITY", "CABADBARAN", "TANDAG", "CAGAYAN"};
                        double fare[] = { 0,600,170,150,200,250};

                        //converted integer to string, transfer to storage array//
                        ticketS[z][1] = dest[to];
                        ticketD[z][0] = fare[to];

                        //inputing for Number of Passenger's//
                        for(x=1; x==1;){
                        System.out.print("HOW MANY PASSENGERS ARE YOU?: ");
                        ticketI[z][0] = Integer.parseInt(in.readLine());

                            //subtract the available seat by the the number inputed//
                            for(int p=1; p<=5; p++){
                                if(to==p){
                                    print=1;
                                    available[to] = available[to]-ticketI[z][0];

                                    //if the subtracted available seat is "<0", display error//
                                    //add the inputed number to the subtracted seat, to back the original seat//
                                    //display the available seat and back to the inputing//
                                    if(available[to]<0){
                                        System.out.print("Sorry, We don't have seat available for " +ticketI[z][0] +" person\n");
                                        available[to] = available[to]+ticketI[z][0];
                                        System.out.print("We only have " +available[to] +" seat available\n");
                                        x=1;
                                        print=0;
                                    }
                                    else{
                                        x=0;
                                    }
                                }
                            }

                        }

                        //inputing for Number of Discounted Passenger's//
                        for(x=1;x==1;){
                            System.out.print("HOW MANY PASSENGERS HAVE DISCOUNT?: ");
                            ticketI[z][1] = Integer.parseInt(in.readLine());

                            if(ticketI[z][1]>ticketI[z][0]){

                                System.out.println("Invalid Input!");
                                System.out.println("No. of Passengers are only " +ticketI[z][0] +"!");
                            x=1;
                            }
                            else{
                                break;
                            }
                        }


                        //print out of passengers details....
                        if(print==1){
                            System.out.println("\n***************************************");
                            System.out.println("**        PASSENGER'S DETAILS        **");
                            System.out.println("***************************************");
                            System.out.println("PASSENGER'S NAME: " + ticketS[z][0]);
                            System.out.println("PASSENGER'S DESTINATION : " + ticketS[z][1]);
                            System.out.println("FARE PRICE: Php " + ticketD[z][0]);
                            System.out.println("NO. OF PASSENGERS: " + ticketI[z][0]);
                            System.out.println("NO. OF PASSENGERS WITH DISCOUNT: " + ticketI[z][1]);
                            System.out.println("***************************************");
                            System.out.println("***************************************\n");
                            ticketS[z][2]="0";
                            double discount=(ticketD[z][0]-(ticketD[z][0]*0.2))*ticketI[z][1];
                            ticketD[z][2]= ((ticketI[z][0]-ticketI[z][1])*ticketD[z][0])+discount;
                            x=0;
                        }
                        z++;
                        }
                    }

                    else if (choice.equals("3")){


                        for(x=1; x==1;){

                                System.out.print("ENTER PASSENGER'S NAME: ");
                                search = in.readLine();


                                int s=1;
                                for(int b=0;b<z;b++){
                                    if(search.equalsIgnoreCase(ticketS[b][0])){
                                        System.out.println("***************************************");
                                        System.out.println("**        PASSENGER'S DETAILS        **");
                                        System.out.println("***************************************");
                                        System.out.println("PASSENGER'S NAME: " + ticketS[b][0]);
                                        System.out.println("PASSENGER'S DESTINATION : " + ticketS[b][1]);
                                        System.out.println("FARE PRICE: Php" + ticketD[b][0]);
                                        System.out.println("NO. OF PASSENGERS: " + ticketI[b][0]);
                                        System.out.println("NO. OF PASSENGERS WITH DISCOUNT: " + ticketI[b][1]);
                                        System.out.println("***************************************");
                                        System.out.println("***************************************");
                                        s=0;
                                        x=0;

                                        if(ticketS[b][2].equals("x")){
                                            System.out.println("Passenger's Already Paid!");
                                            x=0;
                                        }
                                        else{
                                            ticketS[b][2]="x";


                                            for(x=1; x==1;){
                                                System.out.println("\nPASSENGER'S TOTAL FARE: Php "+ticketD[b][2]);
                                                System.out.print("ENTER AMOUNT TO PAY: ");
                                                pay[b] = Double.parseDouble(in.readLine());
                                                change[b]=pay[b]-ticketD[b][2];

                                                if(change[b]<0){
                                                    System.out.println("Invalid Input!");
                                                    x=1;
                                                }
                                                else{
                                                    System.out.println("CHANGE: Php "+change[b]);
                                                    System.out.println("");
                                                    x=0;
                                                }
                                            }
                                        }
                                    }
                                }
                                if (s==1){
                                    System.out.println("\nPASSENGER'S NAME NOT FOUND!\n");
                                    for(int q=1; q==1;){

                                    System.out.print("Do you wish to continue with this transaction? [Y/N]: ");
                                    again=in.readLine();

                                    if(again.equalsIgnoreCase("y")){
                                        q=0;
                                    }
                                    else if (again.equalsIgnoreCase("n")){
                                        q=0;
                                        x=0;

                                    }
                                    else{
                                        System.out.println("\nInvalid input!\n");
                                    }


                                }
                            }
                        }

                    }

                    else if (choice.equals("4")){


                        for(int sx=1; sx<=3;){
                        System.out.print("SEARCH PASSENGER'S NAME: ");
                        search = in.readLine();

                        int s=1;
                            for(x=0; x<=z; x++){
                                if(search.equalsIgnoreCase(ticketS[x][0])){
                                    System.out.println("***************************************");
                                    System.out.println("**        PASSENGER'S DETAILS        **");
                                    System.out.println("***************************************");
                                    System.out.println("PASSENGER'S NAME: " + ticketS[x][0]);
                                    System.out.println("PASSENGER'S DESTINATION : " + ticketS[x][1]);
                                    System.out.println("FARE PRICE: Php" + ticketD[x][0]);
                                    System.out.println("NO. OF PASSENGERS: " + ticketI[x][0]);
                                    System.out.println("NO. OF PASSENGERS WITH DISCOUNT: " + ticketI[x][1]);
                                    System.out.println("TOTAL FARE PRICE: Php " + ticketD[x][2]);
                                    if(ticketS[x][2].equals("x")){
                                        System.out.println("PAY: Php " +pay[x]);
                                        System.out.println("CHANGE: Php " +change[x]);
                                        System.out.println("STATUS: PAID");
                                    }
                                    else{
                                        System.out.println("STATUS: NOT PAID");
                                    }
                                    System.out.println("***************************************");
                                    System.out.println("***************************************");
                                    s=0;
                                    sx=4;
                                }
                            }


                            if (s==1){
                                System.out.println("Passenger's Name not found!");
                                sx++;
                            }

                        }
                    }

                    else if(choice.equals("5")){
                        end=1;
                        x=0;
                        System.out.println("Thank You!");
                    }

                    else{
                        System.out.println("Invalid Input!");
                        x=1;
                    }
                }

                for(y=1; y==1;){
                    if(end==1){
                        break;
                    }
                    System.out.print("Do you want another transaction? [Y/N]: ");
                    yn = in.readLine();

                    if (yn.equalsIgnoreCase("y")){
                        x=1;
                        y=0;
                    }
                    else if (yn.equalsIgnoreCase("n")){
                        System.out.println("\nThank You!!!");
                        break;
                    }
                    else{
                        System.out.println("Invalid Input!!!");
                        y=1;
                    }
                }
            }
            i=4;
        }
        else{
            System.out.println("\nInvalid user or password!\n");
            i++;
        }

    }

    }


}