package http

import (
	"fmt"
	"net/http"
)

type Error interface {
	error
	StatusCode() int
	Message() string
	Unwrap() error
}

type httpError struct {
	code    int
	message string
	cause   error
}

func (e httpError) Error() string {
	if e.message == "" {
		e.message = http.StatusText(e.code)
	}

	return fmt.Sprintf("%d %s", e.code, e.message)
}

func (e httpError) StatusCode() int {
	return e.code
}

func (e httpError) Message() string {
	if e.message == "" {
		e.message = http.StatusText(e.code)
	}

	return e.message
}

func (e httpError) Unwrap() error {
	return e.cause
}

func NewError(message string, code int) httpError {
	return httpError{
		code:    code,
		message: message,
	}
}

func (e httpError) WithCause(cause error) Error {
	return httpError{
		code:    e.code,
		message: e.message,
		cause:   cause,
	}
}