// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.

package folio

import (
	"errors"
	"fmt"
)

type EventType string

const (
	EventTypeLoad EventType = "load"
	EventTypeCreate EventType = "create"
	EventTypeRead EventType = "read"
	EventTypeUpdate EventType = "update"
	EventTypeDelete EventType = "delete"
	EventTypeError EventType = "error"
)

var (
	ErrUnknownEventType error = errors.New("Unknown EventType")
)

func (e EventType) Validate() (err error) {
	switch e {
	case EventTypeLoad, EventTypeCreate, EventTypeRead, EventTypeUpdate, EventTypeDelete, EventTypeError:
	default:
		return fmt.Errorf("%w: %s", ErrUnknownEventType, e)
	}
	return
}

func (e *EventType) Set(v EventType) (err error) {
	if err = v.Validate(); err == nil {
		(*e) = v
	}
	return
}