Untitled

//23120044 - Tran Trung Hieu
//Week01 - Escape Room Challenge 


using System.Text;

namespace W1_EscapeRoomChallenge
{
    internal class Program
    {
        static char []answers = { '?', '?', '?' };

        /// <summary>
        /// Display the final result
        /// </summary>
        static void displayResult()
        {
            for(int i =0; i< answers.Length; i++)
            {
                answers[i] = char.ToLower(answers[i]);
            }
            Console.WriteLine($"Our contact email is : " +
                $"{answers[0]}{answers[1]}{answers[2]}" +
                $"[email protected]");
        }

        /// <summary>
        /// Display question and choices
        /// </summary>
        static void displayMenu()
        {
            Console.WriteLine("Select an option by entering its number:");
            Console.WriteLine("1.Question 1");
            Console.WriteLine("2.Question 2");
            Console.WriteLine("3.Question 3");
            Console.WriteLine("4.Display current result");
            Console.WriteLine("5.Exit");
        }

        /// <summary>
        /// Clear the output screen from a specific line
        /// </summary>
        /// <param name="line"> the starting line to clear </param>
        static void ClearFromLine(int line)
        {
            int totalLines = Console.WindowHeight;

            for (int i = line; i < totalLines; i++)
            {
                Console.SetCursorPosition(0, i);
                Console.Write(new string(' ', Console.WindowWidth));
            }

            // Move cursor back to the starting line
            Console.SetCursorPosition(0, line);
        }

        /// <summary>
        /// Interface for different questions
        /// </summary>
        interface IQuestion
        {
            string description { get; }
            string hint { get; }
            void displayQuestion()
            {
                Console.WriteLine(description + "(press any number to show hint)");
            }
            void displayHint()
            {
                ClearFromLine(11);
                Console.WriteLine("Hint :"+hint);
            }
        }

        /// <summary>
        /// Question 1 contents
        /// </summary>
        class Question1: IQuestion
        {
            public string description { get; } = "1. -- ";
            public string hint { get; } = "It's Morse Code";
        }
        /// <summary>
        /// Question 2 contents
        /// </summary>
        class Question2 : IQuestion
        {
            public string description { get; } = " ((1 << 6) * 2) - (3 * 7) ";
            public string hint { get; } = "ASCII";

        }
        /// <summary>
        /// Question 3 contents
        /// </summary>
        class Question3 : IQuestion
        {
            public string description { get; } = "  Which English word has this pronunciation \"aʊər\" ";
            public string hint { get; } = "Think about time";

        }
        static void Main(string[] args)
        {

            Console.OutputEncoding = Encoding.Unicode;
            //Introduce the program purpose
            Console.WriteLine("---Escape Room Challenge---");
            Console.WriteLine("---Please answer the three questions below to find out our group contact email---");

            int choice = 0; //Varible for choosing options

            //Creating question
            Question1 q1 = new Question1();
            Question2 q2 = new Question2();
            Question3 q3 = new Question3();

            IQuestion[] questions = { q1, q2, q3 };

            displayMenu();
            while(choice != 5)
            {
                Console.WriteLine(); //A line break for seperation 
                Console.Write("Your choice : ");
                string input = Console.ReadLine();
                
                //Try to parse the input into int 
                if(int.TryParse(input, out choice))
                {
                    //Display out the question based on the choice
                    switch (choice)
                    {
                        case 1: case 2: case 3:
                            questions[choice-1].displayQuestion();
                            input  = Console.ReadLine();
                            string answer = "";
                            int num = 0;

                            //Check if the user want to get hint or to answer 
                            if (int.TryParse(input, out num))
                            {
                                questions[choice-1].displayHint();
                                answer = Console.ReadLine();
                            }
                            else
                            {
                                answer = input;
                            }

                            Console.WriteLine("Your answer was :" + answer);
                            if(answer != "")
                            {
                                answers[choice-1] = answer[0];
                            }

                                break;
                        case 4:
                            displayResult();
                            break;
                        case 5:
                            Console.WriteLine("The program will shut down");
                            return;
                        default:
                            break;
                    }
                }
                else
                {
                    Console.WriteLine("Invalid input, press Enter to try again.");
                    Console.ReadKey();
                }

                Console.Write("Press enter to go back to menu");
                Console.ReadKey();

                ClearFromLine(8);
            }   


            //Closing off program
            Console.WriteLine("Press Enter to exit the program");
        }
    }
}