package sqaffold

import "net/http"

var (
	ErrNoRows = NewError(http.StatusNotFound, "no rows", nil)
)

type Error struct {
	StatusCode int
	Text       string

	Previous error
}

func (e *Error) Error() string {
	return e.Text
}

func (e *Error) Is(target error) bool {
	if other, ok := target.(*Error); ok {
		if other.StatusCode > 0 {
			if e.StatusCode != other.StatusCode {
				return false
			}
		}

		if other.Text != "" {
			if e.Text != other.Text {
				return false
			}
		}
	}

	return true
}

func Err(err error) *Error {
	return NewError(http.StatusInternalServerError, err.Error(), err)
}

func NewError(statusCode int, text string, previous error) *Error {
	err := &Error{
		StatusCode: statusCode,
		Text:       text,
		Previous:   previous,
	}

	return err
}