using System;

using System.Collections.Generic;

using System.IO;

using System.Runtime.Serialization.Formatters.Binary;

​

namespace Journal

{

    public static class Program

    {

        public static void Main(string[] args)

        {

            Journal journal = new Journal();

​

            while (true)

            {

                Console.WriteLine("1. Write a new entry");

                Console.WriteLine("2. Display journal");

                Console.WriteLine("3. Save journal");

                Console.WriteLine("4. Load journal");

                Console.WriteLine("5. Quit");

​

                Console.Write("Enter your choice: ");

                int userChoice = Convert.ToInt32(Console.ReadLine());

​

                if (userChoice == 1)

                {

                    string chosenPrompt = journal.GetRandomPrompt();

                    Console.WriteLine("Prompt: " + chosenPrompt);

                    Console.WriteLine("Write your response:");

                    string response = Console.ReadLine();

​

                    Entry newEntry = new Entry

                    {

                        Date = DateTime.Now,

                        Prompt = chosenPrompt,

                        Response = response

                    };

​

                    journal.AddEntry(newEntry);

                }

                else if (userChoice == 2)

                {

                    journal.DisplayEntries();

                }

                else if (userChoice == 3)

                {

                    Console.WriteLine("Enter a filename to save journal:");

                    string filename = Console.ReadLine();

                    journal.SaveJournal(filename);

                }

                else if (userChoice == 4)

                {

                    Console.WriteLine("Enter a filename to load journal:");

                    string filename = Console.ReadLine();

                    journal.LoadJournal(filename);

                }

                else if (userChoice == 5)

                {

                    break;

                }

                else

                {

                    Console.WriteLine("Invalid choice. Try again.");

                }

            }

        }

    }

​

    class Entry

    {

        public DateTime Date { get; set; }

        public string Prompt { get; set; }

        public string Response { get; set; }

    }

​

    class Journal

    {

        private List<string> prompts = new List<string>

        {

            "What did you learn today?",

            "What are you grateful for?",

            "What did you accomplish today?",

            "What challenges did you face today?",

            "What are your goals for tomorrow?"

        };

        private List<Entry> entries = new List<Entry>();

​

        public string GetRandomPrompt()

        {

            Random rand = new Random();

            int index = rand.Next(prompts.Count);

            return prompts[index];

        }

​

        public void AddEntry(Entry entry)

        {

            entries.Add(entry);

        }

​

        public void DisplayEntries()

        {

            Console.WriteLine("Journal Entries:");

            foreach (Entry entry in entries)

            {

                Console.WriteLine("Date: " + entry.Date);

                Console.WriteLine("Prompt: " + entry.Prompt);

                Console.WriteLine("Response: " + entry.Response);

                Console.WriteLine("----------------");

            }

        }

​

        public void SaveJournal(string filename)

        {

            using (Stream stream = File.Open(filename, FileMode.Create))

            {

                BinaryFormatter binaryFormatter = new BinaryFormatter();

                binaryFormatter.Serialize(stream, entries);

            }

        }

​

        public void LoadJournal(string filename)

        {

            if (File.Exists(filename))

            {

                using (Stream stream = File.Open(filename, FileMode.Open))

                {

                    BinaryFormatter binaryFormatter = new BinaryFormatter();

                    entries = (List<Entry>)binaryFormatter.Deserialize(stream);

                }

            }

            else

            {

                Console.WriteLine("File does not exist.");

            }

        }

    }

}