Program.cs

using System;
using System.Collections.Generic;
using System.IO;
using System.Reflection;
using System.Text;
using System.Text.Json;

namespace Oligopoly;

public class Program
{
	private static bool CloseRequested { get; set; } = false;
	private static List<Company> Companies { get; set; } = null!;
	private static List<Event> Events { get; set; } = null!;
	private static Event CurrentEvent { get; set; } = null!;
	private static decimal Money { get; set; }
	private const decimal LosingNetWorth = 2000.00m;
	private const decimal WinningNetWorth = 50000.00m;

	public static void Main()
	{
		#region Trim Prevention

		// We need to call the default constructors so that they do not get
		// trimmed when compiling with the -p:PublishTrimmed=true option.
		// The default constructor is required for JSON deserialization.

		_ = new Company()
		{
			Name = nameof(Company.Name),
			Industry = nameof(Company.Industry),
			SharePrice = 42.42m,
			NumberOfShares = 42,
			Description = nameof(Company.Description)
		};

		_ = new Event()
		{
			Title = nameof(Event.Title),
			Description = nameof(Event.Description),
			CompanyName = nameof(Event.CompanyName),
			Effect = 42
		};

		#endregion

		try
		{
			MainMenuScreen();
		}
		finally
		{
			Console.ResetColor();
			Console.CursorVisible = true;
		}
	}

	private static void LoadEmbeddedResources()
	{
		Assembly assembly = Assembly.GetExecutingAssembly();
		{
			using Stream? stream = assembly.GetManifestResourceStream("Oligopoly.Company.json");
			Companies = JsonSerializer.Deserialize<List<Company>>(stream!)!;
		}
		{
			using Stream? stream = assembly.GetManifestResourceStream("Oligopoly.Event.json");
			Events = JsonSerializer.Deserialize<List<Event>>(stream!)!;
		}
	}

	private static void MainMenuScreen()
	{
		while (!CloseRequested)
		{
			StringBuilder prompt = new();
			prompt.AppendLine();
			prompt.AppendLine("     ██████╗ ██╗     ██╗ ██████╗  ██████╗ ██████╗  ██████╗ ██╗  ██╗   ██╗");
			prompt.AppendLine("    ██╔═══██╗██║     ██║██╔════╝ ██╔═══██╗██╔══██╗██╔═══██╗██║  ╚██╗ ██╔╝");
			prompt.AppendLine("    ██║   ██║██║     ██║██║  ███╗██║   ██║██████╔╝██║   ██║██║   ╚████╔╝ ");
			prompt.AppendLine("    ██║   ██║██║     ██║██║   ██║██║   ██║██╔═══╝ ██║   ██║██║    ╚██╔╝  ");
			prompt.AppendLine("    ╚██████╔╝███████╗██║╚██████╔╝╚██████╔╝██║     ╚██████╔╝███████╗██║   ");
			prompt.AppendLine("     ╚═════╝ ╚══════╝╚═╝ ╚═════╝  ╚═════╝ ╚═╝      ╚═════╝ ╚══════╝╚═╝   ");
			prompt.AppendLine();
			prompt.Append("You can exit the game at any time by pressing ESCAPE.");
			prompt.AppendLine();
			prompt.Append("Use up and down arrow keys and enter to select an option:");
			int selectedIndex = HandleMenuWithOptions(prompt.ToString(),
				[
					"Play",
					"About",
					"Exit",
				]);
			switch (selectedIndex)
			{
				case 0: IntroductionScreen(); break;
				case 1: AboutInfoScreen(); break;
				case 2: CloseRequested = true; break;
			}
		}
		Console.Clear();
		Console.WriteLine("Oligopoly was closed. Press any key to continue...");
		Console.CursorVisible = false;
		Console.ReadKey(true);
	}

	private static void InitializeGame()
	{
		Money = 10000.00m;
		LoadEmbeddedResources();
	}

	private static void GameLoop()
	{
		while (!CloseRequested)
		{
			int selectedOption = -1;
			while (!CloseRequested && selectedOption is not 0)
			{
				StringBuilder prompt = RenderCompanyStocksTable();
				prompt.AppendLine();
				prompt.Append("Use up and down arrow keys and enter to select an option:");
				selectedOption = HandleMenuWithOptions(prompt.ToString(),
					[
						"Wait For Market Change",
						"Buy",
						"Sell",
						"Information About Companies",
					]);
				switch (selectedOption)
				{
					case 1: BuyOrSellStockScreen(true); break;
					case 2: BuyOrSellStockScreen(false); break;
					case 3: CompanyDetailsScreen(); break;
				}
			}

			EventScreen();

			switch (CalculateNetWorth())
			{
				case >= WinningNetWorth: PlayerWinsScreen(); return;
				case <= LosingNetWorth: PlayerLosesScreen(); return;
			}
		}
	}

	private static void EventScreen()
	{
		CurrentEvent = Events[Random.Shared.Next(0, Events.Count)];

		foreach (Company currentCompany in Companies)
		{
			if (currentCompany.Name == CurrentEvent.CompanyName)
			{
				currentCompany.SharePrice += currentCompany.SharePrice * CurrentEvent.Effect / 100;
			}
		}

		StringBuilder prompt = RenderCompanyStocksTable();
		prompt.AppendLine();
		prompt.AppendLine($"{CurrentEvent.Title}");
		prompt.AppendLine();
		prompt.AppendLine($"{CurrentEvent.Description}");
		prompt.AppendLine();
		prompt.Append("Press any key to continue...");
		Console.Clear();
		Console.Write(prompt);
		Console.CursorVisible = false;
		CloseRequested = CloseRequested || Console.ReadKey(true).Key is ConsoleKey.Escape;
	}

	private static void BuyOrSellStockScreen(bool isBuying)
	{
		int[] numberOfShares = new int[Companies.Count];
		int index = 0;
		ConsoleKey key = default;
		while (!CloseRequested && key is not ConsoleKey.Enter)
		{
			// calculate the current cost of the transaction
			decimal cost = 0.00m;
			for (int i = 0; i < Companies.Count; i++)
			{
				cost += numberOfShares[i] * Companies[i].SharePrice;
			}

			Console.Clear();
			Console.WriteLine(RenderCompanyStocksTable());
			Console.WriteLine();
			Console.WriteLine($"Use the arrow keys and enter to confirm how many shares to {(isBuying ? "buy" : "sell")}:");
			for (int i = 0; i < Companies.Count; i++)
			{
				if (i == index)
				{
					(Console.BackgroundColor, Console.ForegroundColor) = (Console.ForegroundColor, Console.BackgroundColor);
					Console.WriteLine($" < {numberOfShares[i]}{(!isBuying ? $"/{Companies[index].NumberOfShares}" : "")} > {Companies[i].Name}");
					Console.ResetColor();
				}
				else
				{
					Console.WriteLine($"   {numberOfShares[i]}{(!isBuying ? $"/{Companies[index].NumberOfShares}" : "")}   {Companies[i].Name}");
				}
			}
			Console.WriteLine();
			Console.WriteLine($"{(isBuying ? "Cost" : "Payout")}: {cost:C}");

			key = Console.ReadKey(true).Key;
			switch (key)
			{
				case ConsoleKey.Escape: CloseRequested = true; return;
				case ConsoleKey.UpArrow: index = index is 0 ? Companies.Count - 1 : index - 1; break;
				case ConsoleKey.DownArrow: index = index == Companies.Count - 1 ? 0 : index + 1; break;
				case ConsoleKey.RightArrow:
					if (isBuying)
					{
						if (cost + Companies[index].SharePrice <= Money)
						{
							numberOfShares[index]++;
						}
					}
					else
					{
						if (numberOfShares[index] < Companies[index].NumberOfShares)
						{
							numberOfShares[index]++;
						}
					}
					break;
				case ConsoleKey.LeftArrow:
					if (numberOfShares[index] > 0)
					{
						numberOfShares[index]--;
					}
					break;
				
			}
		}

		if (CloseRequested)
		{
			return;
		}

		if (isBuying)
		{
			for (int i = 0; i < Companies.Count; i++)
			{
				Money -= numberOfShares[i] * Companies[i].SharePrice;
				Companies[i].NumberOfShares += numberOfShares[i];
			}
		}
		else
		{
			for (int i = 0; i < Companies.Count; i++)
			{
				Money += numberOfShares[i] * Companies[i].SharePrice;
				Companies[i].NumberOfShares -= numberOfShares[i];
			}
		}

		Console.Clear();
		Console.WriteLine(RenderCompanyStocksTable());
		Console.WriteLine($"You shares have been updated.");
		Console.WriteLine();
		Console.Write("Press any key to continue...");
		Console.CursorVisible = false;
		CloseRequested = CloseRequested || Console.ReadKey(true).Key is ConsoleKey.Escape;
	}

	private static void CompanyDetailsScreen()
	{
		Console.Clear();
		foreach (Company company in Companies)
		{
			Console.WriteLine($"{company.Name} - {company.Description}");
			Console.WriteLine();
		}
		Console.Write("Press any key to exit the menu...");
		Console.CursorVisible = false;
		CloseRequested = CloseRequested || Console.ReadKey(true).Key is ConsoleKey.Escape;
	}

	private static void IntroductionScreen()
	{
		Console.Clear();
		Console.WriteLine();
		Console.WriteLine("    ┌────────────────────────────────────────────────────────────────────────────────┐");
		Console.WriteLine("    │ Dear CEO,                                                                      │");
		Console.WriteLine("    │                                                                                │");
		Console.WriteLine("    │ Welcome to Oligopoly!                                                          │");
		Console.WriteLine("    │                                                                                │");
		Console.WriteLine("    │ On behalf of the board of directors of Oligopoly Investments, we would like to │");
		Console.WriteLine("    │ congratulate you on becoming our new CEO. We are confident that you will lead  │");
		Console.WriteLine("    │ our company to new heights of success and innovation. As CEO, you now have     │");
		Console.WriteLine("    │ access to our exclusive internal software called Oligopoly, where you can      |");
		Console.WriteLine("    │ track the latest news from leading companies and buy and sell their shares.    │");
		Console.WriteLine("    │ This software will give you an edge over the competition and help you make     │");
		Console.WriteLine("    │ important decisions for our company. To access the program, simply click the   │");
		Console.WriteLine("    │ button at the bottom of this email. We look forward to working with you and    │");
		Console.WriteLine("    │ supporting you in your new role.                                               │");
		Console.WriteLine("    │                                                                                │");
		Console.WriteLine("    │ Sincerely,                                                                     │");
		Console.WriteLine("    │ The board of directors of Oligopoly Investments                                │");
		Console.WriteLine("    └────────────────────────────────────────────────────────────────────────────────┘");
		Console.WriteLine();
		Console.Write("Press any key to continue...");
		Console.CursorVisible = false;
		CloseRequested = CloseRequested || Console.ReadKey(true).Key is ConsoleKey.Escape;
		InitializeGame();
		GameLoop();
	}

	private static void PlayerWinsScreen()
	{
		Console.Clear();
		Console.WriteLine();
		Console.WriteLine("    ┌────────────────────────────────────────────────────────────────────────────────┐");
		Console.WriteLine("    │ Dear CEO,                                                                      │");
		Console.WriteLine("    │                                                                                │");
		Console.WriteLine("    │ On behalf of the board of directors of Oligopoly Investments, we would like to │");
		Console.WriteLine("    │ express our gratitude and understanding for your decision to leave your post.  │");
		Console.WriteLine("    │ You have been a remarkable leader and a visionary strategist, who played the   │");
		Console.WriteLine("    │ stock market skillfully and increased our budget by five times. We are proud   │");
		Console.WriteLine("    │ of your achievements and we wish you all the best in your future endeavors. As │");
		Console.WriteLine("    │ a token of our appreciation, we are pleased to inform you that the company     │");
		Console.WriteLine("    │ will pay you a bonus of $1 million. You deserve this reward for your hard work │");
		Console.WriteLine("    │ and dedication. We hope you will enjoy it and remember us fondly. Thank you    │");
		Console.WriteLine("    │ for your service and your contribution to Oligopoly Investments.               │");
		Console.WriteLine("    │ You will be missed.                                                            │");
		Console.WriteLine("    │                                                                                │");
		Console.WriteLine("    │ Sincerely,                                                                     │");
		Console.WriteLine("    │ The board of directors of Oligopoly Investments                                │");
		Console.WriteLine("    └────────────────────────────────────────────────────────────────────────────────┘");
		Console.WriteLine();
		Console.WriteLine($"Your net worth is over {WinningNetWorth:C}.");
		Console.WriteLine();
		Console.WriteLine("You win! Congratulations!");
		Console.WriteLine();
		Console.Write("Press any key (except ENTER) to continue...");
		ConsoleKey key = ConsoleKey.Enter;
		while (!CloseRequested && key is ConsoleKey.Enter)
		{
			Console.CursorVisible = false;
			key = Console.ReadKey(true).Key;
			CloseRequested = CloseRequested || key is ConsoleKey.Escape;
		}
	}

	private static void PlayerLosesScreen()
	{
		Console.Clear();
		Console.WriteLine();
		Console.WriteLine("    ┌────────────────────────────────────────────────────────────────────────────────┐");
		Console.WriteLine("    │ Dear former CEO,                                                               │");
		Console.WriteLine("    │                                                                                │");
		Console.WriteLine("    │ We regret to inform you that you are being removed from the position of CEO    │");
		Console.WriteLine("    │ and fired from the company, effective immediately. The board of directors of   │");
		Console.WriteLine("    │ Oligopoly Investments has decided to take this action because you have spent   │");
		Console.WriteLine("    │ the budget allocated to you, and your investment turned out to be unprofitable │");
		Console.WriteLine("    │ for the company. We appreciate your service and wish you all the best in your  │");
		Console.WriteLine("    │ future endeavors.                                                              │");
		Console.WriteLine("    │                                                                                │");
		Console.WriteLine("    │ Sincerely,                                                                     │");
		Console.WriteLine("    │ The board of directors of Oligopoly Investments                                │");
		Console.WriteLine("    └────────────────────────────────────────────────────────────────────────────────┘");
		Console.WriteLine();
		Console.WriteLine($"Your net worth dropped below {LosingNetWorth:C}.");
		Console.WriteLine();
		Console.WriteLine("You Lose! Better luck next time...");
		Console.WriteLine();
		Console.Write("Press any key (except ENTER) to continue...");
		ConsoleKey key = ConsoleKey.Enter;
		while (!CloseRequested && key is ConsoleKey.Enter)
		{
			Console.CursorVisible = false;
			key = Console.ReadKey(true).Key;
			CloseRequested = CloseRequested || key is ConsoleKey.Escape;
		}
	}

	private static void AboutInfoScreen()
	{
		Console.Clear();
		Console.WriteLine();
		Console.WriteLine("    |");
		Console.WriteLine("    | THANKS!");
		Console.WriteLine("    |");
		Console.WriteLine("    | No really, thank you for taking time to play this simple console game. It means a lot.");
		Console.WriteLine("    |");
		Console.WriteLine("    | This game was created by Semion Medvedev (Fuinny)");
		Console.WriteLine("    |");
		Console.WriteLine();
		Console.WriteLine("Press any key to continue...");
		Console.CursorVisible = false;
		CloseRequested = CloseRequested || Console.ReadKey(true).Key is ConsoleKey.Escape;
	}

	private static StringBuilder RenderCompanyStocksTable()
	{
		// table column widths
		const int c0 = 30, c1 = 10, c2 = 19, c3 = 17;

		StringBuilder gameView = new();
		gameView.AppendLine($"╔═{new('═', c0)}═╤═{new('═', c1)}═╤═{new('═', c2)}═╤═{new('═', c3)}═╗");
		gameView.AppendLine($"║ {"Company",-c0} │ {"Industry",c1} │ {"Share Price",c2} │ {"You Have",c3} ║");
		gameView.AppendLine($"╟─{new('─', c0)}─┼─{new('─', c1)}─┼─{new('─', c2)}─┼─{new('─', c3)}─╢");
		foreach (Company company in Companies)
		{
			gameView.AppendLine($"║ {company.Name,-c0} │ {company.Industry,c1} │ {company.SharePrice,c2:C} │ {company.NumberOfShares,c3} ║");
		}
		gameView.AppendLine($"╚═{new('═', c0)}═╧═{new('═', c1)}═╧═{new('═', c2)}═╧═{new('═', c3)}═╝");
		gameView.AppendLine($"Your money: {Money:C}    Your Net Worth: {CalculateNetWorth():C}");
		return gameView;
	}

	private static int HandleMenuWithOptions(string prompt, string[] options)
	{
		int index = 0;
		ConsoleKey key = default;
		while (!CloseRequested && key is not ConsoleKey.Enter)
		{
			Console.Clear();
			Console.WriteLine(prompt);
			for (int i = 0; i < options.Length; i++)
			{
				string currentOption = options[i];
				if (i == index)
				{
					(Console.BackgroundColor, Console.ForegroundColor) = (Console.ForegroundColor, Console.BackgroundColor);
					Console.WriteLine($"[*] {currentOption}");
					Console.ResetColor();
				}
				else
				{
					Console.WriteLine($"[ ] {currentOption}");
				}
			}
			Console.CursorVisible = false;
			key = Console.ReadKey().Key;
			switch (key)
			{
				case ConsoleKey.UpArrow: index = index is 0 ? options.Length - 1 : index - 1; break;
				case ConsoleKey.DownArrow: index = index == options.Length - 1 ? 0 : index + 1; break;
				case ConsoleKey.Escape: CloseRequested = true; break;
			}
		}
		return index;
	}

	private static decimal CalculateNetWorth()
	{
		decimal netWorth = Money;
		foreach (Company company in Companies)
		{
			netWorth += company.SharePrice * company.NumberOfShares;
		}
		return netWorth;
	}
}