Assignment1

package com.company;
//package inputHandler;
import java.util.Scanner;
import java.util.Random;

public class Main {

    private static Scanner sc = new Scanner(System.in);

    public static void main(String[] args) {


        // Main menu (new text, new number and exit) message if you choose to exit.
        String userInput;
        //String remove;


        while (true) {
            System.out.println("Please enter 'new text', 'new number' or 'exit'."); //prompt user for input

            userInput = sc.nextLine(); //get input


            switch (userInput) {
                case "new text":
                    newText(); //call the method newText
                    break;
                case "new number":
                    newNumber(); //call the method newNumber
                    break;
                case "exit":
                    System.exit(0); //exit program
                    break;
                default:
                    System.out.println("Invalid input"); //print message to user


            }

        }


    }


    private static void newText () {
        // loops until breaks.
        while (true) {
            System.out.println("Please choose between following: remove char, text value, randomize or write return to get back to main menu.");

            // Wating to get user input.
            String userInput = sc.nextLine();

            // Choosing between options from user input.
            switch (userInput) {
                case "remove char":
                    System.out.println("Please enter a line of text");
                    userInput = sc.nextLine();
                    System.out.println("Please enter the char you want removed");
                    String remove = sc.nextLine();
                    System.out.println(removeChar(userInput, remove));
                    break;
                case "text value":
                    System.out.println("Please enter a line of text");
                    userInput = sc.nextLine();
                    System.out.println("Your text value is " + textValue(userInput));
                    break;
                case "randomize":
                    System.out.println("Please enter a line of text");
                    userInput = sc.nextLine();
                    randomize(userInput);
                    break;
                case "return":
                    //Back to menu
                    break;
                // if no result, write text to user.
                default:
                    System.out.println("Please enter valid input");

            }
        }
    }


        //Method removeChar() this method replaces one char with another.
        private static String removeChar (String userInput, String remove){
            return userInput.replace(remove, "");
        }


    private static int textValue(String userInput) {
        int value = 0;

        // loops trough all chars in the string.
        for (char c : userInput.toCharArray()) {
            // Failsafe, if user input is not any of english chars, break.
            if (getValueFromChar2(Character.toLowerCase(c)) < 0) {
                System.out.println("Input error. " + c + " do not return any points");
                break;
            }
            // adds for each char to int value.
            else {
                value += getValueFromChar2(Character.toLowerCase(c));
            }
        }

        return value;
    }


        //Method randomize() this method shuffles characters within a string.

        private static String randomize (String userInput){
            char[] characters = userInput.toCharArray(); //Converts the string to an array of chars.
            for (int i = 0; i < characters.length; i++) { //Replaces each char with a random one within the original string
                int randomIndex = randomWithRange(characters.length);
                char temp = characters[i];
                characters[i] = characters[randomIndex];
                characters[randomIndex] = temp;
            }
            return new String(characters); //Returns a string created from the chars
        }


    private static void newNumber() {
        // loops until breaks.
        while (true) {
            System.out.println("Please choose between following: remove char, text value, randomize or write return to get back to main menu.");

            // Waiting to get user input.
            String userInput = sc.nextLine();

            // Choosing between options from user input.
            switch (userInput) {
                case "get random number":
                    System.out.println("Please write the bound of the number you want to random");
                    // waiting for user input.
                    userInput = sc.nextLine();
                    System.out.println("Your random number is " + randomWithRange(Integer.parseInt(userInput)));
                    break;
                case "print plus":
                    //TODO add text value function
                    break;
                case "create calculator":
                    // TODO add randomzie function
                    break;
                case "return":
                    // Breaking the loop.
                    break;
                // if no result, write text to user.
                default:
                    System.out.println("Please enter valid input");

            }
        }
    }

        //Metoden printPlus - använd randommetoden som Ludvig gör

        public static int printPlus ( int userInput){

            String s = "";

            while (true) {

                System.out.println("Do you want to print a specific number or a random one? Please enter 'Specific' or 'Random'");

                String input = sc.nextLine(); //Get user input to determine whether to randomize or not

                if (input.equals("Specific")) {

                    int userNumber = sc.nextInt(); //Get a specific number from the user

                    for (int i = 0; i <= userNumber; i++) {

                        s = s + "+";
                        System.out.println(s);
                    }

                } else if (input.equals("Random")) {

                    int range = 10;

                    double d = randomWithRange(range);  //call the method getRandomNumber(int range)

                    for (int i = 0; i <= d; i++) { //loop the random number

                        s = s + "+";
                        System.out.println(s); //print the plus
                    }


                }


            }


        }


    private static int getValueFromChar2(char c) {
        // Making the string of the alphabet into chars in an array, starting with a space to make this value to zero.
        char alpa[] = " abcdefghijklmnopqrstuvwxyz".toCharArray();
        int atChar = 0;
        // looping the array and give +1 value at atChar each time the array is not the c value.
        for (atChar = 0; alpa[atChar] != c; atChar++) {
            if (atChar > alpa.length) {
                // the char value do not exist, returning -1 to make you see the error.
                return -1;
            }
        }

        return atChar;
    }



        private static int randomWithRange ( int bound){
            Random newRandom = new Random();
            int myNumber = newRandom.nextInt(bound);
            return myNumber;
        }
    }