var builder = WebApplication.CreateBuilder(args);

builder.Services.AddControllers();

var app = builder.Build();
var webRootPath = app.Environment.WebRootPath ?? Path.Combine(app.Environment.ContentRootPath, "wwwroot");
var indexFilePath = Path.Combine(webRootPath, "index.html");

app.UseDefaultFiles();
app.UseStaticFiles();

app.MapControllers();
app.MapFallback(async context =>
{
    if (context.Request.Path.StartsWithSegments("/api"))
    {
        context.Response.StatusCode = StatusCodes.Status404NotFound;
        return;
    }

    if (!File.Exists(indexFilePath))
    {
        context.Response.StatusCode = StatusCodes.Status404NotFound;
        return;
    }

    context.Response.ContentType = "text/html; charset=utf-8";
    await context.Response.SendFileAsync(indexFilePath);
});

app.Run();