package _import

import (
	"context"
	"os"

	"emperror.dev/errors"
	"lmika.dev/lmika/weiro/models"
	"lmika.dev/lmika/weiro/providers/db"
	"lmika.dev/lmika/weiro/providers/sitereader"
)

type Service struct {
	db *db.Provider
}

func New(db *db.Provider) *Service {
	return &Service{
		db: db,
	}
}

func (s *Service) Import(ctx context.Context, sitePath string) (models.Site, error) {
	user, ok := models.GetUser(ctx)
	if !ok {
		return models.Site{}, models.UserRequiredError
	}

	sr := sitereader.New(os.DirFS(sitePath))

	readSite, err := sr.ReadSite()
	if err != nil {
		return models.Site{}, errors.Wrap(err, "failed to read site")
	}

	site := readSite.Site
	site.OwnerID = user.ID

	if err := s.db.SaveSite(ctx, &site); err != nil {
		return models.Site{}, errors.Wrap(err, "failed to save site")
	}

	for _, post := range readSite.Posts {
		post.SiteID = site.ID
		if post.GUID == "" {
			post.GUID = models.NewNanoID()
		}
		if err := s.db.SavePost(ctx, post); err != nil {
			return models.Site{}, errors.Wrap(err, "failed to save post")
		}
	}

	return site, nil
}