Program.cs

using FullStackGameManager.Data;
using FullStackGameManager.Endpoints;
var builder = WebApplication.CreateBuilder(args);
builder.Services.AddValidation();
builder.AddGameDb();
var ConnectionString = "Data Source=RestApi.db";
builder.Services.AddSqlite<RestApiContext>(ConnectionString);

builder.Services.AddCors(options =>
{
    options.AddPolicy("angular",
        policy => policy.WithOrigins("http://localhost:4200")
                        .AllowAnyMethod()
                        .AllowAnyHeader());
});

builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen();

var app = builder.Build();

app.UseCors("angular");

app.UseSwagger();

app.UseSwaggerUI();

app.MigrationDb();

app.MapGetEndpoints();

if(!app.Environment.IsDevelopment())
{
    app.UseHttpsRedirection();
}

app.Run();