精简后的项目：仅保留 api/ui 源码、文档、构建依赖

api/scanner/media_scan.go

@@ -0,0 +1,40 @@
+package scanner
+
+import (
+	"github.com/photoview/photoview/api/graphql/models"
+	"github.com/photoview/photoview/api/scanner/media_encoding"
+	"github.com/photoview/photoview/api/scanner/scanner_task"
+	"github.com/photoview/photoview/api/scanner/scanner_tasks"
+	"github.com/pkg/errors"
+)
+
+func scanMedia(ctx scanner_task.TaskContext, media *models.Media, mediaData *media_encoding.EncodeMediaData, mediaIndex int, mediaTotal int) error {
+	newCtx, err := scanner_tasks.Tasks.BeforeProcessMedia(ctx, mediaData)
+	if err != nil {
+		return errors.Wrapf(err, "before process media (%s)", media.Path)
+	}
+
+	mediaCachePath, err := media.CachePath()
+	if err != nil {
+		return errors.Wrapf(err, "cache directory error (%s)", media.Path)
+	}
+
+	transactionError := newCtx.DatabaseTransaction(func(ctx scanner_task.TaskContext) error {
+		updatedURLs, err := scanner_tasks.Tasks.ProcessMedia(newCtx, mediaData, mediaCachePath)
+		if err != nil {
+			return errors.Wrapf(err, "process media (%s)", media.Path)
+		}
+
+		if err = scanner_tasks.Tasks.AfterProcessMedia(newCtx, mediaData, updatedURLs, mediaIndex, mediaTotal); err != nil {
+			return errors.Wrap(err, "after process media")
+		}
+
+		return nil
+	})
+
+	if transactionError != nil {
+		return errors.Wrap(transactionError, "process media database transaction")
+	}
+
+	return nil
+}