using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.Logging;
using System.Net;
using System.Text.Json;

namespace MotoresArgentinosV2.API.Middleware;

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

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

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

    private async Task HandleExceptionAsync(HttpContext context, Exception exception)
    {
        // Loguear el error real con stack trace completo
        _logger.LogError(exception, "Error no controlado procesando la solicitud: {Method} {Path}", context.Request.Method, context.Request.Path);

        context.Response.ContentType = "application/json";
        context.Response.StatusCode = (int)HttpStatusCode.InternalServerError;

        var response = new
        {
            status = context.Response.StatusCode,
            message = "Ocurrió un error interno en el servidor. Por favor, intente nuevamente más tarde.",
            // En desarrollo mostramos el detalle, en producción ocultamos todo
            detail = _env.IsDevelopment() ? exception.Message : null
        };

        var json = JsonSerializer.Serialize(response);
        await context.Response.WriteAsync(json);
    }
}