SecretChat

import java.util.Scanner;

public class SecretChat {
    public static void main(String[] args) {
// 1 greshka  87 / 100

        Scanner scan = new Scanner(System.in);
        String chatWord = scan.nextLine();
        String command = scan.nextLine();
        while (!command.equals("Reveal")) {
            String[] commands = command.split("\\:\\|:");
            switch (commands[0]) {
                case "ChangeAll":
                    String searchFor = commands[1];
                    String replaceWith = commands[2];
                    chatWord = chatWord.replaceAll(searchFor, replaceWith);
                    System.out.println(chatWord);
                    break;
                case "Reverse":
                    String word = commands[1];
                    if (chatWord.contains(word)){
                        String reverse = reverse(word); //1-vi metod
                        chatWord = chatWord.replace(word, reverse);
                        System.out.println(chatWord);
                    } else {
                        System.out.println("error");
                        break;
                    } break;
                case "InsertSpace":
                    char insertChar = ' ';
                    chatWord = insertSpace(chatWord, commands[1], insertChar);
                    System.out.println(chatWord);
            }
            command = scan.nextLine();
        }
            System.out.println("You have a new text message: " + chatWord);
    }


    private static String insertSpace(String chatWord, String command, char insertChar) {
        int indexNum = Integer.parseInt(command);
        chatWord = chatWord.substring(0, indexNum) + insertChar + chatWord.substring(indexNum);
       // System.out.println(chatWord);
        return chatWord;

    }

    private static String reverse(String word) {  // 1-vi metod
        String result = "";
        for (int i = word.length() - 1; i >= 0; i--) {
            result += word.charAt(i);
        }
        return result;
    }
}