///////////////////////// TOP OF FILE COMMENT BLOCK ////////////////////////////
//
// Title: Text Converter
// Course: CS 200, Fall, 2019
//
// Author: Khosti Eshak
// Email: eshak@wisc.edu
// Lecturer's Name: Marc Renault
//
///////////////////////////////// CITATIONS ////////////////////////////////////
//
// https://cs200-www.cs.wisc.edu/wp/syllabus/#academicintegrity
// Source or Recipient; Description
// Examples:
// Jane Doe; helped me with for loop in reverse method
// https://docs.oracle.com/javase/tutorial/java/nutsandbolts/for.html;
// counting for loop
// John Doe; I helped with switch statement in main method.
//
/////////////////////////////// 80 COLUMNS WIDE ////////////////////////////////

import java.util.Scanner;

public class TextConverter {
    /**
     * 1337 - convert the string to leet-speak: Replace each L or l with a 1 (numeral one) Replace
     * each E or e with a 3 (numeral three) Replace each T or t with a 7 (numeral seven) Replace
     * each O or o with a 0 (numeral zero) Replace each S or s with a $ (dollar sign)
     *
     * @param current Original string
     * @return string converted to leet-speak.
     */
    public static String action1337(String current) {
        String leetString = "";
        int i = 0;

        for (i = 0; i < current.length(); i++) {
            if (current.charAt(i) == 'L' || current.charAt(i) == 'l') {
                leetString += "1";
            } else if (current.charAt(i) == 'E' || current.charAt(i) == 'e') {
                leetString += "3";
            } else if (current.charAt(i) == 'T' || current.charAt(i) == 't') {
                leetString += "7";
            } else if (current.charAt(i) == 'O' || current.charAt(i) == 'o') {
                leetString += "0";
            } else if (current.charAt(i) == 'S' || current.charAt(i) == 's') {
                leetString += "$";
            } else {
                leetString += current.charAt(i);
            }
        }

        return leetString; // FIX ME
    }

    /**
     *  tests action1337 method with various cases to ensure it is working
     *  correctly.
     */
    public static void testAction1337() {
        boolean error = false;

        String input1 = "LEeTs";
        String expected1 = "1337$";
        String result1 = action1337(input1);
        if (!result1.equals(expected1)) {
            error = true;
            System.out.println("1) testAction1337 with input " + input1 + ", expected: " + expected1
                + " but result:" + result1);
        }

        String input2 = "   1337$   ";
        String expected2 = "   1337$   ";
        String result2 = action1337(input2);
        if (!result2.equals(expected2)) {
            error = true;
            System.out.println("2) testAction1337 with input " + input2 + ", expected: " + expected2
                + " but result:" + result2);
        }

        String input3 = "1010010";
        String expected3 = "1010010";
        String result3 = action1337(input3);
        if (!result3.equals(expected3)) {
            error = true;
            System.out.println("3) testAction1337 with input " + input3 + ", expected: " + expected3
                + " but result:" + result3);
        }



        // FIX ME
        // add at least 2 other test cases. What edge cases can you think of?


        if (error) {
            System.out.println("testAction1337 failed");
        } else {
            System.out.println("testAction1337 passed");
        }
    }



    /**
     * This reverses the order of characters in the current string.
     * @param current  Original string to be reversed.
     * @return  The string in reversed order.
     */
    public static String actionReverse(String current) {
        String reverseString = "";
        int i = 0;
        for (i = (current.length() - 1); i >= 0; i--) {
            reverseString += current.charAt(i);
        }
        return reverseString;
    }

    /**
     *  tests actionReverse method with various cases to ensure it is working
     *  correctly.
     */
    public static void testActionReverse() {
        boolean error = false;

        String input1 = "Abc";
        String expected1 = "cbA";
        String result1 = actionReverse(input1);
        if (!result1.equals(expected1)) {
            error = true;
            System.out.println("1) testActionReverse with input " + input1 + ", expected: "
                + expected1 + " but result:" + result1);
        }

        String input2 = "   hello world   ";
        String expected2 = "   dlrow olleh   ";
        String result2 = actionReverse(input2);
        if (!result2.contentEquals(expected2)) {
            error = true;
            System.out.println("2) testActionReverse with input " + input2 + ", expected: "
                + expected2 + " but result:" + result2);
        }

        String input3 = "\\n\\t\\abc";
        String expected3 = "cba\\t\\n\\";
        String result3 = actionReverse(input3);
        if (!result3.contentEquals(expected3)) {
            error = true;
            System.out.println("3) testActionReverse with input " + input3 + ", expected: "
                + expected3 + " but result:" + result3);
        }


        // FIX ME
        // add at least 2 other test cases. What edge cases can you think of?


        if (error) {
            System.out.println("testActionReverse failed");
        } else {
            System.out.println("testActionReverse passed");
        }
    }

    /**
     * Provides the main menu for the text converter and calls methods based
     * on menu options chosen.
     * @param args
     */
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String command;
        String userString;

        System.out.println("Welcome to the Text Converter.");
        System.out.println("Available Actions:");
        System.out.println("  1337) convert to 1337-speak");
        System.out.println("  rev) reverse the string");
        System.out.println("  quit) exit the program");
        System.out.println("");

        System.out.print("Please enter a string: ");
        userString = sc.nextLine();

        while (true) {
            System.out.print("Action (1337, rev, quit): ");
            command = sc.nextLine();

            if (command.equals("quit")) {
                System.out.println("See you next time!");
                break;
            } else if (command.equals("1337")) {
                userString = action1337(userString);
                System.out.println(userString);
            } else if (command.equals("rev")) {
                userString = actionReverse(userString);
                System.out.println(userString);
            } else {
                System.out.println("Unrecognized action.");
                System.out.println(userString);
            }
        }
        // testAction1337();
        // testActionReverse();

    }
}