MireaBackend/Endpoint/Middleware/CustomExceptionHandlerMiddleware.cs

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using FluentValidation;
using Microsoft.AspNetCore.Http;
using Mirea.Api.DataAccess.Application.Common.Exceptions;
using Mirea.Api.Dto.Responses;
using Mirea.Api.Endpoint.Common.Exceptions;
using System;
using System.Text.Json;
using System.Threading.Tasks;
namespace Mirea.Api.Endpoint.Middleware;
public class CustomExceptionHandlerMiddleware(RequestDelegate next)
{
public async Task Invoke(HttpContext context)
{
try
{
await next(context);
}
catch (Exception exception)
{
await HandleExceptionAsync(context, exception);
}
}
private static Task HandleExceptionAsync(HttpContext context, Exception exception)
{
var code = StatusCodes.Status500InternalServerError;
var result = string.Empty;
switch (exception)
{
case ValidationException validationException:
code = StatusCodes.Status400BadRequest;
result = JsonSerializer.Serialize(new ErrorResponse()
{
Error = validationException.Message,
Code = code
});
break;
case NotFoundException:
code = StatusCodes.Status404NotFound;
break;
case ControllerArgumentException:
code = StatusCodes.Status400BadRequest;
break;
}
context.Response.ContentType = "application/json";
context.Response.StatusCode = code;
if (string.IsNullOrEmpty(result))
result = JsonSerializer.Serialize(new ErrorResponse()
{
Error = exception.Message,
Code = code
});
return context.Response.WriteAsync(result);
}
}