package journal

import (
	"context"
	"errors"

	"git.golem15.com/golem15/sm-journal-plugin/classes"
	"git.golem15.com/golem15/summercms/modules/conga"
	"git.golem15.com/golem15/summercms/modules/pact"
	"gocloud.dev/blob"
	"gorm.io/gorm"
)

var _ pact.HasJobs = (*Plugin)(nil)

// Jobs registers the image variants job (golem15.journal.image_variants,
// D-85): thumbnails and WebP copies of featured images, outside the upload
// request, three attempts.
func (p *Plugin) Jobs() []pact.Job {
	return []pact.Job{conga.Job(p.imageVariants, conga.MaxAttempts(3))}
}

// imageVariants runs one image variants job.
func (p *Plugin) imageVariants(ctx context.Context, args classes.ImageVariantsArgs) error {
	if p.app == nil {
		return errors.New("journal: app is not booted")
	}
	db, ok := p.app.Lookup[*gorm.DB]()
	if !ok || db == nil {
		return errors.New("journal: database is not configured")
	}
	bucket, ok := p.app.Lookup[*blob.Bucket]()
	if !ok || bucket == nil {
		return errors.New("journal: the uploads bucket is not configured")
	}
	res, err := classes.GenerateImageVariants(ctx, db, bucket, classes.ImageWidths(p.app.Config), args.FileIDs)
	if err != nil {
		return err
	}
	pluginLog.Info("journal: image variants", "files", res.Files, "written", res.Written, "skipped", res.Skipped)
	return nil
}