package useCases

import (
	"RenewCMS/internal/domain/audit"
	"RenewCMS/internal/domain/image"
	"context"
)

type PurgeVariantUseCase struct {
	variants image.VariantRepository
	cache    variantCache
	recorder audit.Recorder
}

func NewPurgeVariantUseCase(variants image.VariantRepository, files image.VariantFileRepository, storage image.Storage, recorder audit.Recorder) *PurgeVariantUseCase {
	return &PurgeVariantUseCase{variants, variantCache{files, storage}, recorder}
}

func (u *PurgeVariantUseCase) Purge(ctx context.Context, name string) (VariantPurgeResult, error) {
	if _, err := u.variants.Get(name); err != nil {
		return VariantPurgeResult{}, err
	}

	event := audit.NewEvent(audit.ActionVariantPurge, audit.CategoryMedia)
	event.Target = audit.VariantTarget(name)
	purged, err := u.cache.purgeVariant(name)
	if err != nil {
		recordFailure(ctx, u.recorder, event, err)
		return VariantPurgeResult{}, err
	}
	if purged.Files > 0 {
		event.Params = variantPurgeParams(purged)
		u.recorder.Record(ctx, event)
	}
	return purged, nil
}