package httpaccept

import (
	"fmt"
	"strings"
)

var _ error = &internalNotAcceptable{}

type internalNotAcceptable struct {
	mediatypes []string
}

func (receiver internalNotAcceptable) Error() string {
	var mediatypes []string = receiver.mediatypes

	if len(mediatypes) < 1 {
		return "httpaccept: none of the provided media-types are acceptable, because an empty list of media-types was provided"
	}

	var buffer strings.Builder
	buffer.WriteString("httpaccept: none of the provided media-types are acceptable —")
	for _, mediatype := range mediatypes {
		fmt.Fprintf(&buffer, " %q", mediatype)
	}

	return buffer.String()
}

func (internalNotAcceptable) ClientError() {
	// Nothing here.
}

func (internalNotAcceptable) NotAcceptable() {
	// Nothing here.
}