package apperrorsx

import "wucher/internal/transport/http/jsonapi"

// AppError is the canonical backend error contract used by translators and writers.
type AppError struct {
	Status    int
	Code      string
	ErrorCode string
	Title     string
	Message   string
	Detail    any
	Source    *jsonapi.ErrorSource
	Cause     error
}

func (e *AppError) Error() string {
	if e == nil {
		return ""
	}
	if e.Message != "" {
		return e.Message
	}
	if e.Cause != nil {
		return e.Cause.Error()
	}
	return e.Code
}

func (e *AppError) WithCause(err error) *AppError {
	if e == nil {
		return nil
	}
	e.Cause = err
	return e
}