Voxel completeness calculator

<?php

function update_post_completeness_score($post_id, $post, $update) {
    // Bail if autosaving or if a revision.
    if ( defined('DOING_AUTOSAVE') && DOING_AUTOSAVE ) return;
    if ( wp_is_post_revision( $post_id ) ) return;

    // Load voxel settings from wp_options.
    $raw_settings = get_option('voxel:post_types');
    if ( !$raw_settings ) {
        return;
    }
    $voxel_settings = json_decode($raw_settings, true);
    if ( !is_array($voxel_settings) ) {
        return;
    }

    $post_type = $post->post_type;
    if ( !isset($voxel_settings[$post_type]) ) {
        return;
    }

    // Get field definitions for this post type.
    $fields = isset($voxel_settings[$post_type]['fields']) ? $voxel_settings[$post_type]['fields'] : array();

    // Check if CPT has a field with key = "score"
    $has_score_field = false;
    foreach ( $fields as $field ) {
        if ( isset($field['key']) && $field['key'] === 'score' ) {
            $has_score_field = true;
            break;
        }
    }
    if ( !$has_score_field ) {
        return;
    }

    $total_score = 0;
    foreach ( $fields as $field ) {
        if ( empty($field['css_class']) ) {
            continue;
        }
        // Match a css class pattern "score-[number]".
        if ( preg_match('/score-(\d+)/', $field['css_class'], $matches) ) {
            $score_value = intval($matches[1]);
            $field_key = $field['key'];

            // Get the field value.
            $value = null;
            switch ( $field_key ) {
                case 'title':
                    $value = $post->post_title;
                    break;
                case 'content':
                    $value = $post->post_content;
                    break;
                case 'excerpt':
                    $value = $post->post_excerpt;
                    break;
                case '_thumbnail_id':
                    $value = has_post_thumbnail($post_id) ? get_post_thumbnail_id($post_id) : '';
                    break;
                default:
                    $value = get_post_meta($post_id, $field_key, true);
            }

            // If the field is filled add the score.
            if ( !empty($value) ) {
                $total_score += $score_value;
            }
        }
    }

    // Save the aggregated score in the "score" field.
    update_post_meta($post_id, 'score', $total_score);
}
add_action('save_post', 'update_post_completeness_score', 10, 3);

// New: Activate hook to update completeness score for all posts.
function cpt_completeness_score_update_all() {
    // Load voxel settings from wp_options.
    $raw_settings = get_option('voxel:post_types');
    if (!$raw_settings) return;
    $voxel_settings = json_decode($raw_settings, true);
    if (!is_array($voxel_settings)) return;

    foreach ($voxel_settings as $post_type => $config) {
        // Ensure the post type has a field with key 'score'
        $fields = isset($config['fields']) ? $config['fields'] : array();
        $has_score_field = false;
        foreach ($fields as $field) {
            if ( isset($field['key']) && $field['key'] === 'score' ) {
                $has_score_field = true;
                break;
            }
        }
        if ( !$has_score_field ) {
            continue;
        }

        // Query all posts of the current type.
        $posts = get_posts(array(
            'post_type'      => $post_type,
            'posts_per_page' => -1,
            'post_status'    => 'any'
        ));
        if (empty($posts)) continue;

        // Update completeness score for each post.
        foreach ($posts as $post) {
            update_post_completeness_score($post->ID, $post, false);
        }
    }
}

// New: Global function to manually trigger recalculation.
function recalculate_all_post_scores() {
    // Recalculate scores for all posts.
    cpt_completeness_score_update_all();
    // Update the flag option.
    update_option('cpt_completeness_score_recalculated', 1);
    return 'CPT Completeness Score: Recalculation completed.';
}

// New: Activation hook to trigger the recalculation.
if ( function_exists('register_activation_hook') ) {
    register_activation_hook( __FILE__, function() {
        recalculate_all_post_scores();
    } );
}

if ( is_admin() ) {
    add_action('admin_init', function() {
        global $cpt_score_message;
        if ( !get_option('cpt_completeness_score_recalculated') ) {
            recalculate_all_post_scores();
            $cpt_score_message = 'CPT Completeness Score: Recalculation completed.';
        } else {
            $cpt_score_message = 'CPT Completeness Score: Already recalculated.';
        }
    });
    add_action('admin_footer', function() {
        global $cpt_score_message;
        ?>
        <script>
            console.log('<?php echo addslashes($cpt_score_message); ?>');
        </script>
        <?php
    });
}