package api

import (
	"context"
	"errors"

	creator "git.ipao.vip/rogee/creator-hub/internal/creator"
	"github.com/sirupsen/logrus"
)

type eventCoverFiles interface {
	GetPlatformWorkCover(string, string) (string, error)
	SavePlatformWorkCover(string, string, string, []byte) error
}

// Cover failures are per-event results: preserve the notification, expose the
// failure on its cover, and retry when the platform returns the notice again.
func cacheListenerWorkCovers(ctx context.Context, files eventCoverFiles, fetch func(context.Context, string) (string, []byte, error), items []creator.ListenerDelivery) {
	for i := range items {
		n := items[i].Notice
		if n == nil || n.WorkID == "" || n.WorkAuthorUID == "" || n.WorkCoverURL == "" {
			continue
		}
		_, err := files.GetPlatformWorkCover(n.WorkAuthorUID, n.WorkID)
		if errors.Is(err, creator.ErrNotFound) {
			var contentType string
			var data []byte
			contentType, data, err = fetch(ctx, n.WorkCoverURL)
			if err == nil {
				err = files.SavePlatformWorkCover(n.WorkAuthorUID, n.WorkID, contentType, data)
			}
		}
		n.WorkCoverError = ""
		if err != nil {
			n.WorkCoverError = err.Error()
			logrus.WithError(err).WithFields(logrus.Fields{"event_key": n.EventKey, "work_key": n.WorkID, "author_uid": n.WorkAuthorUID}).Error("notification cover cache failed")
		}
	}
}