package posts

import (
	"context"
	"lmika.dev/lmika/hugo-cms/models"
	"lmika.dev/lmika/hugo-cms/providers/db"
	"lmika.dev/lmika/hugo-cms/services/jobs"
	"lmika.dev/lmika/hugo-cms/services/sitebuilder"
	"time"
)

type Service struct {
	db   *db.DB
	sb   *sitebuilder.Service
	jobs *jobs.Service
}

func New(
	db *db.DB,
	sb *sitebuilder.Service,
	jobs *jobs.Service,
) *Service {
	return &Service{
		db:   db,
		sb:   sb,
		jobs: jobs,
	}
}

func (s *Service) ListPostOfSite(ctx context.Context, site models.Site) ([]models.Post, error) {
	return s.db.ListPostsOfSite(ctx, site.ID)
}

func (s *Service) GetPost(ctx context.Context, id int) (models.Post, error) {
	post, err := s.db.GetPost(ctx, int64(id))
	if err != nil {
		return models.Post{}, err
	}

	return post, nil
}

func (s *Service) DeletePost(ctx context.Context, site models.Site, id int) error {
	post, err := s.db.GetPost(ctx, int64(id))
	if err != nil {
		return err
	}

	if err := s.db.DeletePost(ctx, int64(id)); err != nil {
		return err
	}

	return s.jobs.Queue(ctx, s.sb.DeletePost(site, post))
}

func (s *Service) Create(ctx context.Context, site models.Site, req NewPost) (models.Post, error) {
	post := models.Post{
		SiteID:      site.ID,
		Title:       req.Title,
		Body:        req.Body,
		State:       models.PostStatePublished,
		PublishDate: time.Now(),
	}

	if err := s.Save(ctx, site, &post); err != nil {
		return models.Post{}, err
	}

	return post, nil
}

func (s *Service) Save(ctx context.Context, site models.Site, post *models.Post) error {
	post.SiteID = site.ID

	if post.ID == 0 {
		post.CreatedAt = time.Now()
		post.UpdatedAt = time.Now()
		if err := s.db.InsertPost(ctx, post); err != nil {
			return err
		}
	} else {
		post.UpdatedAt = time.Now()
		if err := s.db.UpdatePost(ctx, post); err != nil {
			return err
		}
	}

	return s.jobs.Queue(ctx, s.sb.WritePost(site, *post))
}

type NewPost struct {
	Title string
	Body  string
}