sync: check video file size during import process

admin/sync/exercices.go

@@ -178,6 +178,12 @@ func SyncExercice(i Importer, theme fic.Theme, epath string, dmap *map[int64]fic
 	if !i.exists(e.VideoURI) {
 		errs = append(errs, fmt.Sprintf("%q: resolution.mp4: no video file found at %s", edir, e.VideoURI))
 		e.VideoURI = ""
+	} else if size, err := getFileSize(i, e.VideoURI); err != nil {
+		errs = append(errs, fmt.Sprintf("%q: resolution.mp4: ", edir, err))
+		e.VideoURI = ""
+	} else if size == 0 {
+		errs = append(errs, fmt.Sprintf("%q: resolution.mp4: The file is empty!", edir))
+		e.VideoURI = ""
 	}
 
 	// Create or update the exercice

admin/sync/file.go

@@ -39,6 +39,45 @@ type Importer interface {
 // GlobalImporter stores the main importer instance to use for global imports.
 var GlobalImporter Importer
 
+// getFileSize returns the size.
+func getFileSize(i Importer, URI string) (size int64, err error) {
+	if i.exists(URI) {
+		if fi, err := i.stat(URI); err != nil {
+			return 0, err
+		} else {
+			return fi.Size(), nil
+		}
+	}
+
+	dirname := path.Dir(URI)
+	if i.exists(dirname) {
+		filename := path.Base(URI)
+		if files, err := i.listDir(dirname); err != nil {
+			return size, err
+		} else {
+			for _, fname := range []string{filename, filename + "."} {
+				found := false
+				for _, file := range files {
+					if matched, _ := path.Match(fname + "[0-9][0-9]", file); matched {
+						found = true
+						if fi, err := i.stat(path.Join(dirname, file)); err != nil {
+							return size, err
+						} else {
+							size += fi.Size()
+						}
+					}
+				}
+
+				if found {
+					return size, nil
+				}
+			}
+		}
+	}
+
+	return size, errors.New(fmt.Sprintf("%q: no such file or directory", URI))
+}
+
 // getFile helps to manage huge file transfert by concatenating splitted (with split(1)) files.
 func getFile(i Importer, URI string, writer *bufio.Writer) error {
 	// Import file if it exists