how to create custom artist page by custom plugin in wordpress - wordpress

Question

I am researching more and use the code..
I have done this code.
if (!defined('ABSPATH')) {
die;
}
if(!class_exists('ArtistPublic')):
class ArtistPublic
{
public static function createTemplate( ) {
global $user_ID;
$new_post = array(
'post_title' => 'Artist',
'post_content' => 'hello Artist',
'post_status' => 'publish',
'post_date' => date('Y-m-d H:i:s'),
'post_author' => $user_ID,
'post_type' => 'page',
);
$post_id = wp_insert_post($new_post);
if( !$post_id )
wp_die('Error creating template page');
else
update_post_meta( $post_id, '_wp_page_template', 'artist.php' );
// Filter page template
// add_filter('page_template', 'catch_plugin_template');
}
// Page template filter callback
public static function catch_plugin_template($template) {
if( is_page_template('artist.php') )
$template = WP_PLUGIN_DIR . '/ItgArtist/public/templates/artist.php';
return $template;
}
}
endif;
but create multiple page after refresh.
Is there any good way to create the page like as woocommerce does??

Answer 1

So code be like something
if (!defined('ABSPATH')) {
die;
}
if(!class_exists('ArtistPublic')):
class ArtistPublic {
public static function createTemplate( ) {
if( get_option('artist_page_id') ) :
global $user_ID;
$new_post = array(
'post_title' => 'Artist',
'post_content' => 'hello Artist',
'post_status' => 'publish',
'post_date' => date('Y-m-d H:i:s'),
'post_author' => $user_ID,
'post_type' => 'page',
);
$post_id = wp_insert_post($new_post);
if( !$post_id ) :
wp_die('Error creating template page');
else :
update_option('artist_page_id', $post_id);
update_post_meta( $post_id, '_wp_page_template', 'artist.php' );
endif;
endif;
// Filter page template
// add_filter('page_template', 'catch_plugin_template');
}
// Page template filter callback
public static function catch_plugin_template($template) {
if( is_page_template('artist.php') )
$template = WP_PLUGIN_DIR . '/ItgArtist/public/templates/artist.php';
return $template;
}
}
endif;