package cabana_test

import (
	"context"
	"fmt"

	"git.golem15.com/golem15/summercms/modules/backpack"
	"git.golem15.com/golem15/summercms/modules/cabana"
	"git.golem15.com/golem15/summercms/modules/pact"
)

func ExampleEmitRecordSaved() {
	app := backpack.New(nil) // in a plugin, the application it booted with

	// acme.audit listens from its Boot step; record events arrive as pointers.
	app.Events.Listen("acme.audit", func(ctx context.Context, ev *pact.RecordSaved) error {
		for _, change := range ev.Changes {
			fmt.Printf("%s %s: %s %q -> %q (locale %q)\n", ev.Model, ev.ID, change.Attribute, change.Old, change.New, change.Locale)
		}
		return nil
	})

	// acme.blog's own API handler has saved a post outside the admin forms.
	// The write has committed, so it passes no transaction and the event
	// fires at once; inside a lagoon.Transaction it would pass tx and the
	// event would wait for the commit.
	cabana.EmitRecordSaved(context.Background(), app, nil, pact.RecordSaved{
		Model:   "acme_blog_posts",
		ID:      "42",
		Changes: []pact.RecordChange{{Attribute: "slug", Old: "hello", New: "hello-world"}},
	})
	// Output:
	// acme_blog_posts 42: slug "hello" -> "hello-world" (locale "")
}