using Microsoft.AspNetCore.Mvc;

namespace Tiku.Api.Middleware;

public sealed class ExceptionHandlingMiddleware(
    RequestDelegate next,
    ILogger<ExceptionHandlingMiddleware> logger,
    IHostEnvironment environment)
{
    public async Task InvokeAsync(HttpContext context)
    {
        try
        {
            await next(context);
        }
        catch (Exception exception)
        {
            logger.LogError(exception, "Unhandled API exception");

            var problem = new ProblemDetails
            {
                Title = "An unexpected error occurred.",
                Status = StatusCodes.Status500InternalServerError,
                Detail = environment.IsDevelopment() ? exception.Message : null,
                Instance = context.Request.Path
            };

            problem.Extensions["traceId"] = context.TraceIdentifier;
            context.Response.StatusCode = StatusCodes.Status500InternalServerError;
            await context.Response.WriteAsJsonAsync(problem);
        }
    }
}