Function AttachmentsFromMetadata

coderd/x/chatd/chattool/attachment.go:150–171

AttachmentsFromMetadata decodes durable attachment metadata from a tool response so the persistence layer can promote them into assistant file parts.

(metadata string)

// AttachmentsFromMetadata decodes durable attachment metadata from a tool
// response so the persistence layer can promote them into assistant file parts.
func AttachmentsFromMetadata(metadata string) ([]AttachmentMetadata, error) {
	if strings.TrimSpace(metadata) == "" {
		return nil, nil
	}

	var decoded attachmentResponseMetadata
	if err := json.Unmarshal([]byte(metadata), &decoded); err != nil {
		return nil, xerrors.Errorf("unmarshal attachment metadata: %w", err)
	}

	attachments := make([]AttachmentMetadata, 0, len(decoded.Attachments))
	for i, attachment := range decoded.Attachments {
		if attachment.FileID == uuid.Nil {
			return nil, xerrors.Errorf("attachment %d is missing file_id", i)
		}
		if attachment.MediaType == "" {
			return nil, xerrors.Errorf("attachment %d is missing media_type", i)
		}
		attachments = append(attachments, attachment)
	}
	return attachments, nil
}