package web

import (
	"context"

	"plumber/internal/events"
	"plumber/internal/store"
)

func (s *Server) publishPostCreated(post, root *store.Post, author *store.User) {
	s.publishPost(events.PostCreated{PostEvent: s.postEvent(post, root, author)}, root)
}

func (s *Server) publishPostUpdated(post, root *store.Post, author *store.User) {
	s.publishPost(events.PostUpdated{PostEvent: s.postEvent(post, root, author)}, root)
}

func (s *Server) publishPost(ev any, root *store.Post) {
	if root != nil && root.PostState == store.PostStateHidden {
		return
	}
	s.cfg.Events.Publish(context.Background(), ev)
}

func (s *Server) postEvent(post, root *store.Post, author *store.User) events.PostEvent {
	if post == nil {
		return events.PostEvent{}
	}
	rootID := post.ID
	if root != nil {
		rootID = root.ID
	}
	ev := events.PostEvent{
		PostID:     post.ID,
		RootID:     rootID,
		Title:      post.Title,
		Body:       post.Body,
		City:       post.City,
		AuthorID:   post.AuthorID,
		AuthorName: post.AuthorName,
		AuthorRole: string(post.AuthorRole),
		Permalink:  events.Permalink(s.cfg.BaseURL, rootID, post.ID),
	}
	if post.ParentID != nil {
		ev.ParentID = *post.ParentID
	}
	if author != nil {
		if ev.AuthorName == "" {
			ev.AuthorName = author.Name
		}
		if ev.AuthorRole == "" {
			ev.AuthorRole = string(author.Role)
		}
	}
	if n := len(post.Images); n > 0 {
		ev.Images = make([]events.Image, 0, n)
		for _, img := range post.Images {
			ev.Images = append(ev.Images, events.Image{
				URL:         img.PublicURL,
				Description: img.Description,
			})
		}
	}
	return ev
}