Motion-ERP.API/Middleware/ExceptionHandlingMiddleware.cs - main - HiddenLogic/Motion-ERP

Motion-ERP.API/Middleware/ExceptionHandlingMiddleware.cs

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Initial commit: Motion-ERP solution structure

30 июл 2026, 17:01

30 июл 2026, 17:01bf32c92

using System.Net;
using System.Text.Json;
using Motion_ERP_Domain.Exceptions;

namespace Motion_ERP_API.Middleware;

public class ExceptionHandlingMiddleware
{
    private readonly RequestDelegate _next;
    private readonly ILogger<ExceptionHandlingMiddleware> _logger;

    public ExceptionHandlingMiddleware(RequestDelegate next, ILogger<ExceptionHandlingMiddleware> logger)
    {
        _next = next;
        _logger = logger;
    }

    public async Task InvokeAsync(HttpContext context)
    {
        try
        {
            await _next(context);
        }
        catch (Exception ex)
        {
            await HandleExceptionAsync(context, ex);
        }
    }

    private Task HandleExceptionAsync(HttpContext context, Exception exception)
    {
        _logger.LogError(exception, "Unhandled exception: {Message}", exception.Message);

        var response = context.Response;
        response.ContentType = "application/json";

        var errorResponse = new
        {
            error = exception switch
            {
                DomainException de => de.Message,
                ArgumentException ae => ae.Message,
                _ => "Внутренняя ошибка сервера."
            },
            statusCode = exception switch
            {
                DomainException { } de when de is AssetNotFoundException or ContractNotFoundException or ContractorNotFoundException or TariffNotFoundException => (int)HttpStatusCode.NotFound,
                DomainException => (int)HttpStatusCode.BadRequest,
                ArgumentException => (int)HttpStatusCode.BadRequest,
                _ => (int)HttpStatusCode.InternalServerError
            }
        };

        response.StatusCode = errorResponse.statusCode;
        var json = JsonSerializer.Serialize(errorResponse, new JsonSerializerOptions { PropertyNamingPolicy = JsonNamingPolicy.CamelCase });
        return response.WriteAsync(json);
    }
}