/** A public form not yet published, or one with changes not yet published, offers Publish. */
export const publishIsOffered = (isPublic: boolean, published: boolean, hasUnpublishedChanges: boolean): boolean =>
    isPublic && !(published && !hasUnpublishedChanges);

// Publishing used to live only under Form Settings; the header offers it on every tab.
export const PublishHeaderAction = ({ isPublic, published, hasUnpublishedChanges, publishing, onPublish, onReviewUpdate }: {
    isPublic: boolean;
    published: boolean;
    hasUnpublishedChanges: boolean;
    publishing: boolean;
    onPublish: () => void;
    onReviewUpdate: () => void;
}) => {
    if (!publishIsOffered(isPublic, published, hasUnpublishedChanges)) return null;
    return (
        <button type="button"
                className={`btn btn-green${publishing ? ' btn-busy' : ''}`}
                onClick={published ? onReviewUpdate : onPublish}
                disabled={publishing}>
            {publishing ? 'Publishing...' : published ? 'Update published form' : 'Publish'}
        </button>
    );
};