setting media-description and media-focus is now optional when creating attachments

internal/executor/create.go

@@ -244,24 +244,40 @@ func (c *CreateExecutor) createMediaAttachment(gtsClient *client.Client) error {
 		)
 	}
 
-	if !c.mediaDescriptions.ExpectedLength(expectedNumValues) {
+	description := ""
-		return fmt.Errorf(
+	if !c.mediaDescriptions.Empty() {
-			"received an unexpected number of media descriptions: want %d",
+		if !c.mediaDescriptions.ExpectedLength(expectedNumValues) {
-			expectedNumValues,
+			return fmt.Errorf(
-		)
+				"received an unexpected number of media descriptions: want %d",
+				expectedNumValues,
+			)
+		}
+
+		var err error
+		description, err = utilities.ReadContents(c.mediaDescriptions[0])
+		if err != nil {
+			return fmt.Errorf(
+				"unable to read the contents from %s: %w",
+				c.mediaDescriptions[0],
+			)
+		}
 	}
 
-	if !c.mediaFocusValues.ExpectedLength(expectedNumValues) {
+	focus := ""
-		return fmt.Errorf(
+	if !c.mediaFocusValues.Empty() {
-			"received an unexpected number of media focus values: want %d",
+		if !c.mediaFocusValues.ExpectedLength(expectedNumValues) {
-			expectedNumValues,
+			return fmt.Errorf(
-		)
+				"received an unexpected number of media focus values: want %d",
+				expectedNumValues,
+			)
+		}
+		focus = c.mediaFocusValues[0]
 	}
 
 	attachment, err := gtsClient.CreateMediaAttachment(
 		c.mediaFiles[0],
-		c.mediaDescriptions[0],
+		description,
-		c.mediaFocusValues[0],
+		focus,
 	)
 	if err != nil {
 		return fmt.Errorf("unable to create the media attachment: %w", err)