Program.cs

using EventManager.Data;
using EventManager.Repositories;
using EventManager.Services;
using Microsoft.EntityFrameworkCore;
using System.Text.Json.Serialization;

var builder = WebApplication.CreateBuilder(args);

builder.Services.AddDbContext<AppDbContext>(options =>
    options.UseSqlServer(builder.Configuration.GetConnectionString("DefaultConnection")));

builder.Services.AddScoped<ILocationRepository, LocationRepository>();
builder.Services.AddScoped<IEventRepository, EventRepository>();

builder.Services.AddScoped<ILocationService, LocationService>();
builder.Services.AddScoped<IEventService, EventService>();
builder.Services.AddScoped<IAttendanceService, AttendanceService>();

builder.Services.AddControllers().AddJsonOptions(x =>
    x.JsonSerializerOptions.ReferenceHandler = ReferenceHandler.IgnoreCycles);

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

var app = builder.Build();

app.UseSwagger();
app.UseSwaggerUI();

app.UseHttpsRedirection();
app.UseAuthorization();
app.MapControllers();

app.Run();