package maymoon

import (
	"sourcecode.social/reiver/go-errhttp"

	"fmt"
	"net/http"
)

func serveError(responsewriter http.ResponseWriter, err error) {

	if nil == responsewriter {
/////////////// RETURN
		return
	}

	if nil == err {
		http.Error(responsewriter, "Internal Server Error\n\nMissing Error\n", http.StatusInternalServerError)
/////////////// RETURN
		return
	}

	var e errhttp.Error
	{
		var casted bool

		e, casted = err.(errhttp.Error)
		if !casted {
			var msg []byte = []byte("Internal Server Error\n\n")
			msg = append(msg, err.Error()...)
			msg = append(msg, '\n')

			http.Error(responsewriter, string(msg), http.StatusInternalServerError)
/////////////////////// RETURN
			return
		}
	}

	var statuscode int = e.ErrHTTP()

	var msg []byte
	{
		var statustext string = http.StatusText(statuscode)
		if "" == statustext {
			statustext = fmt.Sprintf("HTTP Error %d", statuscode)
		}

		msg = append(msg, statustext...)
	}
	{
		var inner error = e.Unwrap()
		if nil != inner {
			msg = append(msg, "\n\n"...)
			msg = append(msg, inner.Error()...)
			msg = append(msg, '\n')
		}
	}

	http.Error(responsewriter, string(msg), statuscode)
}