Ibro

using Microsoft.AspNetCore.SignalR;

namespace BlazorSignalRChat;

// We're creating a Chat Hub - Hub is a SignalR class
// This class will be used to send messages to the client
// and receive messages from the client
public class ChatHub : Hub
{
    // We will create a constant to be used from the client (Blazor page)

Ibro

public static IHost SeedIfNeeded(this IHost host) {
	using var scope = host.Services.CreateScope();
	var services = scope.ServiceProvider;

	var logger = services.GetRequiredService<ILogger<IDbInitializer>>();

	try {
		logger.LogInformation("Checking if Database is created and if seed needs to be done.");
		var dbInitializer = services.GetRequiredService<IDbInitializer>();
		dbInitializer.Seed().GetAwaiter().GetResult();

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services.AddScoped<IDbInitializer, DbInitializer>();

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public static void Main(string[] args)
{
    CreateHostBuilder(args)
        .Build()
        .SeedIfNeeded()
        .Run();
}

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public interface IDbInitializer {
	Task Seed();
}

public class DbInitializer: IDbInitializer {
	private readonly ILogger < DbInitializer > _logger;
	private readonly UserManager < IdentityUser > _userManager;
	private readonly ApplicationDbContext _dbContext;
	private readonly IWebHostEnvironment _environment;

Ibro

public class Connect4Hub: Hub {
	private readonly ILogger < Connect4Hub > _logger;
	public const string OnGameReady = "OnGameReady";
	public const string NotifySecondPlayer = "NotifySecondPlayer";
	public const string NotifyGameHost = "NotifyGameHost";
	public const string NotifyOnGameOver = "NotifyOnGameOver";
	public const string NotifyOnDraw = "NotifyOnDraw";
	public const string NotifyOnPlayerLeft = "NotifyOnPlayerLeft";
	private const string Connect4Group = "Connect4";

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app.UseEndpoints(endpoints = >
    {
        endpoints.MapControllers();
        endpoints.MapBlazorHub();
        endpoints.MapHub < Connect4Hub > ("/connect4");
        endpoints.MapFallbackToPage("/_Host");
    });

Ibro

public class GameBoard 
{
	public GamePiece[, ] Board { get;	set; }

	public GameBoard() 
  {
		Board = new GamePiece[7, 6];

		// Populate the Board with blank pieces
		for (int i = 0; i <= 6; i++) {

Ibro

public class GamePiece
{
    public PieceColor Color;

    public GamePiece() => Color = PieceColor.Blank;

    public GamePiece(PieceColor color) => Color = color;
}

Ibro

public enum PieceColor
{
    Red,
    Yellow,
    Blank
}