package Fundamentals.Final_Exam.old_Exam;

import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

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

        String regex = "^(?<artist>[A-Z][a-z ']+):(?<song>[A-Z ]+)$";

        String input = sc.nextLine();
        while (!input.equals("end")) {
            Pattern pattern = Pattern.compile(regex);
            Matcher matcher = pattern.matcher(input);
            if (matcher.find()) {
                String artist = matcher.group("artist");

                StringBuilder crypt = new StringBuilder();

                for (int i = 0; i < input.length(); i++) {
                    int key = artist.length();

                    if (Character.isUpperCase(input.charAt(i))) {
                        if (input.charAt(i) + key > 90) {
                            key = input.charAt(i) + key - 90;
                            crypt.append(Character.toString(key + 64));
                        } else {
                            crypt.append(Character.toString(input.charAt(i) + key));
                        }

                    } else if (Character.isLowerCase(input.charAt(i))) {

                        if (input.charAt(i) + key > 122) {
                            key = input.charAt(i) + key - 122;
                            crypt.append(Character.toString(key + 96));
                        } else {
                            crypt.append(Character.toString(input.charAt(i) + key));
                        }
                    } else if (input.charAt(i) == ':') {
                        crypt.append("@");
                    } else if (input.charAt(i) == ' ') {
                        crypt.append(" ");
                    }
                }
                System.out.println("Successful encryption: "+crypt);
            } else {
                System.out.println("Invalid input!");
            }

            input = sc.nextLine();
        }


    }
}