package useCases

import (
	"RenewCMS/internal/domain/language"
	"RenewCMS/internal/domain/transaction"
	"context"
)

type ConfirmDefaultLanguageUseCase struct {
	transactor transaction.Transactor
}

func NewConfirmDefaultLanguageUseCase(transactor transaction.Transactor) *ConfirmDefaultLanguageUseCase {
	return &ConfirmDefaultLanguageUseCase{transactor}
}

func (u *ConfirmDefaultLanguageUseCase) Confirm(ctx context.Context, siteID uint32) error {
	return u.transactor.Run(ctx, func(tx transaction.Repositories) error {
		languages, err := tx.Languages.LockSiteLanguages(siteID)
		if err != nil {
			return err
		}
		defaultLanguage, found := language.DefaultOf(languages)
		if !found {
			return language.ErrNoDefaultLanguage
		}
		if defaultLanguage.Confirmed {
			return nil
		}
		if err := tx.Languages.MarkConfirmed(siteID, defaultLanguage.Tag); err != nil {
			return err
		}
		_, err = tx.Articles.AssignUnassignedLanguage(siteID, defaultLanguage.Tag)
		return err
	})
}