Export from the old CCTM plugin to use WP native custom post types and CMB2

boswall_cctm_export.php

<?php
/**
 * Plugin Name:       Boswall's CCTM exporter
 * Plugin URI:        https://glaikit.co.uk/
 * Description:       Export from the old CCTM plugin to use WP native custom post types and CMB2
 * Version:           1.0
 * Author:            Matt Rose
 * Author URI:        https://glaikit.co.uk/
 * License:           GPL-2.0+
 * License URI:       http://www.gnu.org/licenses/gpl-2.0.txt
 */

// If this file is called directly, abort.
if (!defined('WPINC')) {
    die;
}

// Add to the WP menu
add_action('admin_menu', 'boswall_cctm_export_plugin_menu');
function boswall_cctm_export_plugin_menu() {
	add_management_page('Boswall\'s CCTM exporter', 'CCTM exporter', 'read', 'boswall-cctm-export', 'boswall_cctm_export_export_page');
}

function boswall_cctm_export_concat_array( $value, $next_value ) {
    if ( !$next_value ) return '';
    if ( !$value ) return "'" . $next_value . "'";
    
    return $value . ", '" . $next_value . "'";
}

// catch the register post type args and display them as valid PHP
function boswall_cctm_export_catch_post_type_args ( $args, $post_type ) {
    
    ?>
    
// Register the <?php echo $post_type; ?> post type
function <?php echo $post_type; ?>_post_type() {
$args = <?php var_export( $args ); ?>;
register_post_type( '<?php echo $post_type; ?>',  $args );

}
add_action( 'init', '<?php echo $post_type; ?>_post_type', 0 );

<?php
    return $args;
}

function boswall_cctm_export_export_cmb2( $metaboxes ) {
    
    $field_defs = CCTM::get_custom_field_defs();
    
    foreach ( $metaboxes as $metabox_id => $metabox ) {
        // print_r( $metabox );
    ?>
    
// Define the <?php echo $metabox_id; ?> metabox and field configurations.
function cmb2_<?php echo $metabox_id; ?>_metabox() {
	$cmb = new_cmb2_box( array(
		'id' => '<?php echo $metabox_id; ?>',
		'title' => '<?php echo $metabox['title']; ?>',
		'object_types' => array( <?php echo array_reduce( $metabox['post_types'], 'boswall_cctm_export_concat_array' ); ?> ), // Post type
		'context' => '<?php echo $metabox['context']; ?>',
		'priority' => '<?php echo $metabox['priority']; ?>',
		'show_names' => true, // Show field names on the left
	) );
	<?php
	foreach ( $metabox['custom_fields'] as $custom_field ) :
	    echo '/* CCTM field definition = ' . print_r( $field_defs[$custom_field], true ) . ' */';
	    
	?>

	$cmb->add_field( array(
		'name' => '<?php echo $field_defs[$custom_field]['label']; ?>',
		'desc' => '<?php echo $field_defs[$custom_field]['description']; ?>',
		'id' => '<?php echo $field_defs[$custom_field]['name']; ?>',
		'type' => '<?php echo $field_defs[$custom_field]['type']; ?>',
	) );
    <?php endforeach; ?>
    
}
add_action( 'cmb2_admin_init', 'cmb2_<?php echo $metabox_id; ?>_metabox' );
    
    <?php 
    }
}

// Show the page
function boswall_cctm_export_export_page() {
    add_filter( 'register_post_type_args', 'boswall_cctm_export_catch_post_type_args', 1, 2 );
    
    $post_type_defs = CCTM::get_post_type_defs();
    
    $post_types = array();
    $metaboxes = array();
    
    foreach ( $post_type_defs as $post_type_name => $post_type ) {
		if ( isset($post_type['is_active']) && !empty($post_type['is_active']) && !in_array($post_type_name, CCTM::$built_in_post_types) && isset($post_type['post_type'])	) {
		    $post_types[] = $post_type['post_type'];
		}
		foreach ( $post_type['custom_fields'] as $custom_field ) {
		    // get metabox name
    		$metabox_name = 'cctm_default';
        	if ( isset( $post_type['map_field_metabox'][$custom_field] ) ) {
        		$metabox_name = $post_type['map_field_metabox'][$custom_field];
        	}
        	$metabox = $post_type_name . '_' . $metabox_name;
        	
            // get metabox definition as needed
        	if ( !isset( $metaboxes[$metabox] ) ) {
            	// Default metabox def
            	$metabox_def = CCTM::$metabox_def;
            	if ( isset( CCTM::$data['metabox_defs'][$metabox_name] ) ) {
            		$metabox_def = CCTM::$data['metabox_defs'][$metabox_name];
            	}
        	    $metaboxes[$metabox] = $metabox_def;
        	}
		    
            // add post type to metabox as needed
		    if ( !in_array( $post_type_name, $metaboxes[$metabox]['post_types'] ) ) {
		        $metaboxes[$metabox]['post_types'][] = $post_type_name;
		    }
		    
		    if ( !isset( $metaboxes[$metabox]['custom_fields'] ) ) {
		        $metaboxes[$metabox]['custom_fields'] = array();
		    } 
		    
		    if ( !in_array( $custom_field, $metaboxes[$metabox]['custom_fields'] ) ) {
		        $metaboxes[$metabox]['custom_fields'][] = $custom_field;
		    }
		    
		}
    }

?>
<div class="wrap">
<h1>Boswall's CCTM exporter</h1>

<p>Found <?php echo count( $post_types ); ?> post types: 
<?php foreach( $post_types as $post_type ) { echo '<code>' . $post_type . '</code>, '; } ?>
</p>

<textarea class="widefat" style="height: 75vh;">
    <?php CCTM::register_custom_post_types(); ?>
</textarea>

<p>Found <?php echo count( $metaboxes ); ?> metaboxes:</p>

<textarea class="widefat" style="height: 75vh;">
    <?php //print_r( $metaboxes ); ?>
    <?php boswall_cctm_export_export_cmb2( $metaboxes ); ?>
</textarea>

<p>Experimental area:</p>

<textarea class="widefat" style="height: 75vh;">
    <?php 
  /*
  * Use this area to find and update post meta data
  */
  
    $posts = get_posts( array( 
        'post_type' => 'any',
        'post_status' => 'any',
        'posts_per_page' => -1,
        'meta_key' => 'attached_media_id',
        // 'meta_value' => '_wp_zero_value',
        // 'meta_compare' => '=',
    ) ); 
    foreach ($posts as $post) {
        // print_r( $post->ID );
        // print_r( get_post_meta( $post->ID, 'attached_media_id' ) );
        // print_r( get_post_meta( $post->ID, 'attached_media' ) );
        
        echo 'Post : ' . $post->ID . PHP_EOL;
        echo 'attached_media : ' . get_post_meta( $post->ID, 'attached_media' )[0] . PHP_EOL;
        
        if ( !get_post_meta( $post->ID, 'attached_media' ) && $attached_media_id = get_post_meta( $post->ID, 'attached_media_id' )[0] ) {
            echo 'attached_media_id : ' . $attached_media_id . PHP_EOL;
            $attached_media_src = wp_get_attachment_url( $attached_media_id );
            // print_r( $attached_media_src );
            if ( $attached_media_src[0] ) {
                echo 'Creating : ' . $attached_media_src . ' for post ' . $post->ID . PHP_EOL;
                update_post_meta( $post->ID, 'attached_media', $attached_media_src );
            }
        }
    }
    ?>
</textarea>

</div>
<?php 
} 


?>