Get content from posts and paste on page

Hi everybody,

Here what i need to do:

Check if some posts are draft(or private) with category X.
Check if page with X title exists
If exists add the content of the post, if not add a page with X title with the content of the post.

$args = array(
              'post_type' => 'post',
              'orderby'   => 'title',
              'order'     => 'ASC',
              'post_status' => 'draft'
			  );
	$posts_array = get_posts( $args );
	foreach($posts_array as $key => $value){
		$posttext = get_the_content($value->ID,'', true);
		$postcate = get_the_category($value->ID);
		$postitle = get_the_title($value->ID);	

		if ( is_page( $postcate ) ) {
			$pageA = get_page_by_title( $postcate );
}
}

But I am stuck on create/ update the page, some suggestion?