chpt3

import java.util.Scanner;//Required to read input from keyboard

/**
 *   This program allows the user to order a textbook
 *
 * Enter your details here:
 * Name: Brad Bieselin
 * Lab Day and Time: Friday, 10:25am
 *
 */
public class TextBookOrder {
    public static void main(String[] args){
        // Create a Scanner object to read input.
      Scanner keyboard = new Scanner (System.in);

        String userName;//name of user buying textbook
        boolean discount = false;//discount flag set to false
        String ULevel;//accepts undergraduate level input as String
        char undergradLevel;//saves character entered for
                            //undergraduate standing:SOPHOMORE(S),FRESHMEN(F),SENIOR(R),JUNIOR(J)
        int courseId=0; //Course id of course based on undergrad level
        double cost = 100.0;          // Cost of the Textbook
        double tax;
        final double TAX_RATE = .08;//state tax rate
        final String DISCOUNT_CODE="UA_STUDENT_DISCOUNT"; //Financial discount code for textbook
        String userCode;
        String textbookName="";//name of the textbook to be bought
        //additional variables declared
        String studentInput; //prompts user if he/she is a student
        char firstChar; // takes the first character
        String upperCaseInput; // forces the letter to be uppercase if user writes lower case letter
        double discountCost; //Final cost of textbook after discount
        double finalCost; //Final cost of book after discount and tax


        // Prompt user and get first name.
      System.out.println("Welcome to UAlbany bookstore.");

      /*TASK #1 add lines for task 1 here to check if profession of user is student before you
      continue with rest of your order*/

      System.out.println("Are you a student?" +
                         " Y = Yes, N = No");
      studentInput = keyboard.nextLine();
      upperCaseInput = studentInput.toUpperCase(); // convert it to uppercase, incase if user enters lower case y.
      firstChar = upperCaseInput.charAt(0);



      if (firstChar == 'Y') {

      //continue with rest of your order if user is student
      System.out.print("Enter your first name: ");
      userName = keyboard.nextLine();


      /* Determine if user is eligible for discount by
       having the same discount code as set in the variable DISCOUNT_CODE.
       ADD LINES HERE FOR TASK #2*/


      System.out.print("Enter your discount code if applies: ");

      userCode=keyboard.nextLine();
      if (userCode.equals(DISCOUNT_CODE)) {
        discount = true;
        System.out.println("Correct code! You are eligible for a discount!");

      }

      else if (!userCode.equals(DISCOUNT_CODE)) {
      System.out.println("Invalid code. You are not eligible for a discount.");
      }

      // Prompt user and get undergraduate standing choice between:
      //Freshmen, Sophomore, Junior and Senior.

      System.out.println("Enter your undergraduate standing or level\n"
              + "between:\nFreshmen(F), Sophomore(S), Junior(J) and Senior(R):\n"
              + "Enter letter code only");

       ULevel = keyboard.nextLine();


       //Add code here to extract only the character entered by user

       undergradLevel = ULevel.charAt(0);

       if (undergradLevel == 'F') {
         System.out.println("You are a Freshmen!");
       }
       else if (undergradLevel =='S') {
         System.out.println("You are a Sophomore!");
       }
       else if (undergradLevel =='J') {
         System.out.println("You are a Junior!");
       }
       else if (undergradLevel =='R') {
         System.out.println("You are a Senior!");
       }
       else {
         System.out.println("Enter either of the four options.");
         System.exit(0);
       }


      /* Enter the course id for which you need to buy the textbook.
       ADD LINES HERE FOR TASK #3A and #3B
       Set the textbook name and cost variables appropriately*/

       // Task #3A

       System.out.println("Enter your undergraduate standing or level\n"
              + "between:\nFreshmen(F), Sophomore(S), Junior(J) and Senior(R):\n"
              + "Enter letter code only");

       ULevel = keyboard.nextLine(); // Takes the user's undergrad level
       upperCaseInput = ULevel.toUpperCase(); // Forces the input to upper case, incase user enters "f" which is not the same as F.
       firstChar = upperCaseInput.charAt(0); // Takes the first character of the input.
       switch (firstChar) {

         case 'F':
           System.out.println("You are a Freshmen!");
           break;

         case 'S':
           System.out.println("You are a Sophomore!");
           break;

         case 'J':
           System.out.println("You are a Junior!");
           break;

         case 'R':
           System.out.println("You are a Senior!");
           break;

         default:
           System.out.println("Please enter something valid!");
           System.exit(0);

       }


       // end of task #3A

       // start of task #3B, switch statement to determine which undergrad level displays which textbooks.

       System.out.println("\nList of undergrad level, corresponding required courses ids, textbooks and their cost:\n\t");

       if (firstChar == 'F') {

       switch (firstChar) { // Start of Switch Statement that displays the textbooks corresponding to user's undergrad level


         case 'F':
           System.out.println("\tFreshmen Level(F)-CourseID- 101-Textbook-Intro to Elements of Computing- $50");
           System.out.println("\tFreshmen Level(F)-CourseID- 107-Textbook-Intro to Web Programming- $55");
           break;

       }
       }

       else if (firstChar=='S') {

                  switch (firstChar) {
           case 'S':
           System.out.println("\tSophomore Level(S)-CourseID- 210-Textbook-Intro to Discrete Structure- $60");
           System.out.println("\tSophomore Level(S)-CourseID- 213-Textbook-Intro to Data Structure- $65");
           break;
       }
       }

       else if (firstChar=='J') {
         switch (firstChar) {
         case 'J':
           System.out.println("\tJunior Level(J)-CourseID- 333-Textbook-Intro to Programming Hardware and Software- $70");
           System.out.println("\tJunior Level(J)-CourseID- 311-Textbook-Intro to Priciples of Programming Language- $75");
           break;
         }
       }

       else if (firstChar=='R') {
         switch (firstChar) {

         case 'R':
           System.out.println("\tSenior Level(R)-CourseID- 403-Textbook-Advanced Algorithms and Data Structures- $80");
           System.out.println("\tSenior Level(R)-CourseID- 405-Textbook-Advanced Object Oriented Programming- $90\n\n");
           break;

         }
       }
       else {
         switch (firstChar) {
           default:
           System.out.println("Enter a valid value");
           break;
       }
       }


       // Start of 3B, Switch Statement

       System.out.println("Enter the course Id would you like to buy a textbook for?");

       switch (firstChar) {

         case 'F':
           System.out.println("101-Textbook-Intro to Elements of Computing-$50\n107-Textbook-Intro to Web Programming- $55");
           break;

         case 'S':
           System.out.println("210-Textbook-Intro to Discrete Structure- $60\n213-Textbook-Intro to Data Structure- $65");
           break;

         case 'J':
           System.out.println("333-Textbook-Intro to Programming Hardware and Software- $70\n311-Textbook-Intro to Principles of Programming Language-$75");
           break;

         case 'R':
           System.out.println("403-Textbook-Advanced Algorithms and Data Structures- $80\n405-Textbook-Advanced Object Oriented Programming- $90");
           break;

         default:
           System.out.println("Enter in a proper value (F), (S), (J), (R)");
           break;



       }

      courseId = keyboard.nextInt();

      // Consume the remaining newline character.
      keyboard.nextLine();

      // Set the courseId, textbook cost and textbook name variables appropriately.


      switch (courseId){

        case 101:
          textbookName = "Intro to Elements of Computing";
          cost = 50.0;
          System.out.println(textbookName + " is $" +cost);
          break;

        case 107:
          textbookName = "Intro to Web Programming";
          cost = 55.0;
          System.out.println(textbookName + " is $" +cost);
          break;

        case 210:
          textbookName = "Intro to Discrete Structure";
          cost = 60.0;
          System.out.println(textbookName + " is $" +cost);
          break;

        case 213:
          textbookName = "Intro to Data Structure";
          cost = 65.0;
          System.out.println(textbookName + "is $" +cost);
          break;

        case 333:
          textbookName = "Intro to Programming Hardware and Software";
          cost = 70.0;
          System.out.println(textbookName + "is $" + cost);
          break;

        case 311:
          textbookName = "Intro to Priciples of Programming Language";
          cost = 75.0;
          System.out.println(textbookName + "is $" + cost);
          break;

        case 403:
          textbookName = "Advanced Algorithms and Data Structures";
          cost = 80.0;
          System.out.println(textbookName + "is $" + cost);
          break;

        case 405:
          textbookName = "Advanced Object Oriented Programming";
          cost = 90.0;
          System.out.println(textbookName + "is $" + cost);
          break;

        default:
          System.out.println("Invalid Course ID");
          System.exit(0);
          break;





      }


      /* Apply discount if user is eligible.
        Apply $25 discount if user financial aid code
        matches with DISCOUNT_CODE variable

       ADD LINES FOR TASK #4 HERE*/

      discountCost = cost;

      if (discount) {

        discountCost -= 25.0;
        System.out.println("You are eligible for the discount.");


      }

      else {

      }







      // EDIT PROGRAM FOR TASK #5
      // SO ALL MONEY OUTPUT APPEARS WITH 2 DECIMAL PLACES
      System.out.printf("\nThe cost of your order " +
                        "is: $%.2f\n", discountCost);

      // Calculate and display tax and total cost.
      tax = discountCost * TAX_RATE;
      System.out.printf("The tax is: $%.2f\n", tax);
      System.out.printf("The total due is: $%.2f\n",
                        (tax + discountCost));

      finalCost = tax + discountCost;

      System.out.printf("\nHello "+userName+", you ordered the textbook:"+textbookName+
              " with courseId:"+courseId+" with a cost of:$%.2f\n", finalCost);
      System.out.println("Your order is ready " +
                         "for pickup at UAlbany bookstore.");

      }

      else {
        System.out.println("Sorry! The bookstore is only available to UAlbany students.");
        System.exit(0);
      }

    }
}