package controllers

import (
	"context"

	"git.golem15.com/golem15/sm-journal-plugin/classes"
	"git.golem15.com/golem15/summercms/modules/backpack"
	"git.golem15.com/golem15/summercms/modules/cabana"
)

// purgeSiteCache registers a site cache purge for one saved entity to run
// after the save transaction commits. Without a published
// *classes.SiteCachePurger (no purge configured) or outside a save
// transaction it does nothing.
func purgeSiteCache(ctx context.Context, app func() *backpack.App, kind, slug string) {
	if app == nil {
		return
	}
	a := app()
	if a == nil {
		return
	}
	purger, ok := a.Lookup[*classes.SiteCachePurger]()
	if !ok || purger == nil {
		return
	}
	tx, ok := cabana.TxFromContext(ctx)
	if !ok {
		return
	}
	classes.PurgeSiteCacheAfterCommit(ctx, tx, purger, kind, slug)
}