Cleanup and bugfixes

- Fix bug where unsupported media would be wrongly classified
- Fix bug where sidecar hash wouldn't be updated
- Replace error reporting hash with path,
to avoid potential null pointer exceptions

api/scanner/media_type.go

@@ -1,6 +1,7 @@
 package scanner
 
 import (
+	"fmt"
 	"io"
 	"log"
 	"os"
@@ -231,10 +232,14 @@ func getMediaType(path string) (*MediaType, error) {
 
 	ext := filepath.Ext(path)
 
-	fileExtType := fileExtensions[strings.ToLower(ext)]
+	fileExtType, found := fileExtensions[strings.ToLower(ext)]
 
-	if fileExtType.isSupported() {
-		return &fileExtType, nil
+	if found {
+		if fileExtType.isSupported() {
+			return &fileExtType, nil
+		} else {
+			return nil, errors.New(fmt.Sprintf("unsupported file type '%s' (%s)", ext, fileExtType))
+		}
 	}
 
 	// If extension was not recognized try to read file header

api/scanner/process_photo.go

@@ -319,7 +319,7 @@ func processRawSideCar(tx *sql.Tx, imageData *EncodeMediaData, highResURL *model
 	currentSideCarPath := scanForSideCarFile(photo.Path)
 
 	if currentSideCarPath != nil {
-		currentFileHash := hashSideCarFile(currentSideCarPath)
+		currentFileHash = hashSideCarFile(currentSideCarPath)
 		if photo.SideCarHash == nil || *photo.SideCarHash != *currentFileHash {
 			sideCarFileHasChanged = true
 		}
@@ -354,7 +354,7 @@ func processRawSideCar(tx *sql.Tx, imageData *EncodeMediaData, highResURL *model
 		// save new side car hash
 		_, err = tx.Exec("UPDATE media SET side_car_hash = ?, side_car_path = ? WHERE media_id = ?", currentFileHash, currentSideCarPath, photo.MediaID)
 		if err != nil {
-			return errors.Wrapf(err, "could not update side car hash (%d, %s)", photo.MediaID, *currentFileHash)
+			return errors.Wrapf(err, "could not update side car hash for media: %s", photo.Path)
 		}
 	}
 	return nil