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

internal/executor/create.go

@@ -244,6 +244,8 @@ func (c *CreateExecutor) createMediaAttachment(gtsClient *client.Client) error {
 		)
 	}
 
+	description := ""
+	if !c.mediaDescriptions.Empty() {
 		if !c.mediaDescriptions.ExpectedLength(expectedNumValues) {
 			return fmt.Errorf(
 				"received an unexpected number of media descriptions: want %d",
@@ -251,17 +253,31 @@ func (c *CreateExecutor) createMediaAttachment(gtsClient *client.Client) error {
 			)
 		}
 
+		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],
+			)
+		}
+	}
+
+	focus := ""
+	if !c.mediaFocusValues.Empty() {
 		if !c.mediaFocusValues.ExpectedLength(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)