package article

import (
	"RenewCMS/internal/domain/author"
	"errors"
	"time"
	"unicode/utf8"
)

var (
	ErrInvalidTitle    = errors.New("article's title length should be between 3 and 200 caracters")
	ErrArticleNotFound = errors.New("article not found")
	ErrArticleOffline  = errors.New("article is offline")
)

const (
	MinTitleRunes = 3
	MaxTitleRunes = 200
)

func ValidateTitle(title string) error {
	runeCount := utf8.RuneCountInString(title)
	if runeCount < MinTitleRunes || runeCount > MaxTitleRunes {
		return ErrInvalidTitle
	}
	return nil
}

type Article struct {
	ID        uint32          `json:"id"`
	Title     string          `json:"title"`
	Body      string          `json:"body"`
	IsOnline  bool            `json:"is_online"`
	SiteID    uint32          `json:"site_id"`
	Authors   []author.Byline `json:"authors"`
	CreatedAt time.Time       `json:"created_at"`
	UpdatedAt time.Time       `json:"updated_at"`
}