ActivationKeys_01

package JavaFundamentals.FinalExamExamples;

import JavaFundamentals.TextProcessingLab.Substring_03;

import java.util.Scanner;

public class ActivationKeys_01 {
    public static void main(String[] args) {
        Scanner read = new Scanner(System.in);

        // input will only contains : -->  letters and numbers only split by : --> " >>> ".
        //StringBuilder probe = new StringBuilder(read.nextLine());
        String rowActivationKey = read.nextLine();
        String input = read.nextLine();

        StringBuilder inputManipulation = new StringBuilder(rowActivationKey);
        // we have all these commands :
        //  --> Contains>>> : ( we must check if exist and print yes or no)
        //  --> Flip>>>Upper/Lower>>>{startIndex}>>>{endIndex} : ( we have to change the word case of the given index)
        //                                        !! end index is EXCLUSIVE !!
        //  --> Slice>>>{startIndex}>>>{endIndex} : ( we have to remove the characters between the given index )
        //                          !!  end index is EXCLUSIVE !!

        while (!input.equals("Generate")) {

            String[] command = input.split(">>>");
            String order = command[0];

            switch (order) {
                case "Contains":// check if it works !!
                    String substring = command[1];
                    if (!inputManipulation.toString().contains(substring)) {
                        System.out.println("Substring not found!");
                    } else {
                        System.out.printf("%s contains %s%n", rowActivationKey, substring);
                    }
                    break;
                case "Flip":
                    if (command[1].equals("Upper")) {//ok
                        //StringBuilder toUpper = new StringBuilder(rowActivationKey);
                        int startIndex = Integer.parseInt(command[2]);
                        int endIndex = Integer.parseInt(command[3]);
                        String temporary = inputManipulation.substring(startIndex,endIndex).toUpperCase();
                        // create a temporary variable to use inputManipulation and change toUpperCase
                        inputManipulation.replace(startIndex,endIndex,temporary);

                        System.out.println(inputManipulation.toString());


                    } else if (command[1].equals("Lower")) {//ok
                        int startIndex = Integer.parseInt(command[2]);
                        int endIndex = Integer.parseInt(command[3]);
                        String temporary = inputManipulation.substring(startIndex,endIndex).toLowerCase();
                        inputManipulation.replace(startIndex,endIndex,temporary);

                        System.out.println(inputManipulation.toString());

                    }
                    break;
                case "Slice"://ok it works , DON'T TOUCH !!!!
                    /*StringBuilder inputManipulation = new StringBuilder(rowActivationKey);*/
                    int startIndex = Integer.parseInt(command[1]);
                    int endIndex = Integer.parseInt(command[2]);
                    inputManipulation.delete(startIndex, endIndex);

                    System.out.println(inputManipulation.toString());
                    break;

            }


            input = read.nextLine();
        }


        System.out.printf("Your activation key is: %s",inputManipulation.toString());


    }
}