using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.Filters;
using Microsoft.Extensions.Logging;

namespace Api.SeaHavenIndustries.Filters
{
    /// <summary>
    /// Anonymous invite endpoints never echo an exception: controller-scoped exception
    /// filters run before the global ones, so no message, stack or SQL reaches the caller.
    /// Cancellation is left to the host.
    /// </summary>
    public sealed class InviteRegistrationExceptionFilter : IExceptionFilter
    {
        public const string Message = "Something went wrong. Try again in a minute.";

        private readonly ILogger<InviteRegistrationExceptionFilter> _logger;

        public InviteRegistrationExceptionFilter(ILogger<InviteRegistrationExceptionFilter> logger)
        {
            _logger = logger;
        }

        public void OnException(ExceptionContext context)
        {
            if (context.Exception is OperationCanceledException)
                return;

            _logger.LogError(context.Exception, "Invite registration request failed.");

            context.Result = new ObjectResult(new { code = "server_error", message = Message, retryAfterSeconds = (int?)null })
            {
                StatusCode = StatusCodes.Status500InternalServerError
            };
            context.ExceptionHandled = true;
        }
    }
}