[WP Post fill validator] Adds a JS content fill validator to check #wordpress

admin-post-validate-metablock.css

.dev_plugin_validate_metabox,
.dev_plugin_validate_metabox table{
    width: 100%;
}

.dev_plugin_validate_metabox table tr .title{
    width:80%;
}

.dev_plugin_validate_metabox table tr .result{
    width:20%;
}

.dev_plugin_validate_metabox .result{
    text-align: right;
}

.dev_plugin_validate_metabox .button{
    width: 100%;
    text-align: center;
    margin-top: 10px;
}

.dev_plugin_valid_row_valid{
    color: green;
}
.dev_plugin_valid_row_invalid{
    color: red;
}

admin-post-validate-metablock.js

jQuery( document ).ready(function($) {
    
    var fields = {
        title : $("input[name='post_title']"), 
        editor : $("#content_ifr").contents().find("body"), 
        thumbnail : $("input[name='_thumbnail_id']"), 
        exerpt : "",
        categories : $("input[type='checkbox']")
    };
            
    //title check
    $(fields.title).on('change', function(){
        console.log(fields.title.val());
        
        var value = fields.title.val().length;
        update_validation_field('title', value);
    });
    
    //editor check
    dev_plugin_validate_editor_input();
    setInterval(function(){ 
        dev_plugin_validate_editor_input();
    }, 10 * 1000);
    
    function dev_plugin_validate_editor_input(){
        var value = 0;
        if($('.avia-builder-button:contains("Stand")').length < 1){
            //console.log($("#content_ifr").contents().find("body").html());
            value = $("#content_ifr").contents().find("body").html();
            if(value == '<p><br data-mce-bogus="1"></p>' || value == '<p><br></p>'){
                value = 0;
            } else {
                value = value.length;
            }
        } else {
            //console.log($('#aviaLayoutBuilder').html());
            value = $('#aviaLayoutBuilder').html().length;
        }

        update_validation_field('editor', value);
    }
        
    //thumbnail check
    setInterval(function(){ 
        var value = $("input[name='_thumbnail_id']").val();
        if(value > 0){
            value = 1;
        } else {
            value = 0;
        }
        update_validation_field('thumbnail', value);
    }, 7 * 1000);
    
    //category check
    var catergory_counter = 0;
    $(fields.categories).on('change', function(){
        catergory_counter = 0
        var total_categories = $("#categorychecklist li").length;
        var unchecked_categories = $("#categorychecklist .wpseo-term-unchecked").length;
        catergory_counter = total_categories - unchecked_categories;    // loop all checked items
        
        update_validation_field('categories', catergory_counter);
    });
    

    
    // console.log($("input[name='post_title']").val());
    // console.log($("input[name='_thumbnail_id']").val());
    // console.log($("#content_ifr").contents().find("body").html());
    
    // var checkbox_counter = 0;
    // $("input[name='post_category[]']").each(function (index, obj) {
    //  // loop all checked items
    //  if($(this).val() > 0){
    //      checkbox_counter++;
    //  }
    // });
    //console.log(checkbox_counter);
    //input[name='post_title']      ->  value
    //input[name='_thumbnail_id']   ->  value
    //input[name='post_category[]'] ->  checkboxes count
    // #content_ifr body            ->  html content counter / string lenght
});

function update_validation_field(field, value){
    var new_class = "dev_plugin_valid_row_valid";
    var icon = '<i class="far fa-check-circle"></i>';
    if(value < 1){
        new_class = "dev_plugin_valid_row_invalid";
        icon = '<i class="far fa-times-circle"></i>';
    }
    
    var row = jQuery("#dev_plugin_valid_" + field); 
    row.removeClass( [ "dev_plugin_valid_row_valid", "dev_plugin_valid_row_invalid" ] ).addClass( new_class );
    row.find('.result').html(icon);
}

functions.php

add_action( 'admin_menu', 'dev_plugin_post_validate_metabox' );

function dev_plugin_post_validate_metabox() {

     add_meta_box(
          'dev_plugin_validation_metabox', // metabox ID
          'Content validatie', // title
          'dev_plugin_post_validate_metabox_callback', // callback function
          ['post', 'page', 'portfolio', 'product'], // post type or post types in array
          'side', // position (normal, side, advanced)
          'high' // priority (default, low, high, core)
     );

}

function add_dev_plugin_validation_fields($extra_elements) {
     
        $post_type = get_post_type();
        if($post_type  == "product"){
            $product = wc_get_product( get_the_ID() );
        }
        
        //custom elements
        $custom_elements = [
            'categories' => [['post'], get_the_category(), null],
            
            //woocommerce
            'product categories' => [['product'], ($post_type == "product") ? get_the_terms( get_the_ID() , 'product_cat' ) : "" , "woocommerce/woocommerce.php"],
            'sku' => [['product'], ($post_type == "product") ? $product->get_sku() : "" , "woocommerce/woocommerce.php"],
            'price' => [['product'], ($post_type == "product") ? $product->get_price() : "" , "woocommerce/woocommerce.php"],
            'attributes' => [['product'], ($post_type == "product") ? $product->get_attributes() : "" , "woocommerce/woocommerce.php"],
            'short description' => [['product'], ($post_type == "product") ? $product->get_short_description() : "" , "woocommerce/woocommerce.php"],
            
            //yoast
            'meta title' => [['post', 'page', 'portfolio', 'product'], is_plugin_active( 'wordpress-seo/wp-seo.php' ) ? YoastSEO()->meta->for_current_page()->title : "", 'wordpress-seo/wp-seo.php'],
            'meta description' => [['post', 'page', 'portfolio', 'product'], get_post_meta(get_the_ID(), '_yoast_wpseo_metadesc', true), 'wordpress-seo/wp-seo.php'],
            'meta keyphrase' => [['post', 'page', 'portfolio', 'product'], get_post_meta(get_the_ID(), '_yoast_wpseo_focuskw', true), 'wordpress-seo/wp-seo.php'],
        ];
     
        $custom_elements = array_merge($custom_elements, $extra_elements);
        return $custom_elements;
    }
    add_filter('dev_plugin_validation_fields', 'add_dev_plugin_validation_fields');

function dev_plugin_post_validate_metabox_callback( $post ) {
    //global $_wp_post_type_features;
    //var_dump($_wp_post_type_features['page']);
    //var_dump(get_option('active_plugins'));
         
    //elements for validating | (feature) $key =>  $data
    $elements = [
        'title' => get_the_title(), 
        'editor' => get_the_content(), 
        'thumbnail' => get_the_post_thumbnail_url(), 
        'exerpt' => get_the_excerpt(),
    ];
     
    //custom elements for validating | $custom_key => [array $supported_types, $data, $plugin-requirement]
    if(has_filter('dev_plugin_validation_fields')) {
        $custom_elements = apply_filters('dev_plugin_validation_fields', []);
    }
     
    ?>
    <div class="dev_plugin_validate_metabox">
        <table class='dev_plugin_validate_table'>
            <tbody>
                <?php foreach($elements as $element => $value):
                    if(post_type_supports( get_post_type(), $element )):
                        dev_plugin_print_validation_row($element, $value);
                    endif;
                endforeach;?>
                    
                <?php foreach($custom_elements as $element => $value):
                    if(in_array(get_post_type(), $value[0]) && ($value[2] == null || is_plugin_active( $value[2] ))):
                        switch(gettype($value[1])){
                            case "array":
                                if(count($value[1]) > 0){
                                    $value[1] = dev_plugin_validation_check_array($element, $value[1]);
                                }
                            break;
                        }
                        dev_plugin_print_validation_row($element, $value[1] );
                    endif;
                     
                     
                endforeach; ?>
                    
               </tbody>
          </table>
          <a href="#" class="button button-large">Hulp bij het vullen</a>
     </div>
     <?php
     
}

/**
 * Enqueue a script in the WordPress admin on edit.php.
 *
 * @param int $hook Hook suffix for the current admin page.
 */
function dev_plugin_lex_admin_enqueue_scripts( $hook ) {
    $hooks = ['edit.php', 'post.php'];
    if(!in_array($hook, $hooks)):
        return;
    endif;
    wp_enqueue_script( 'dev_plugin_admin_post_validate_metabox_script', '/wp-content/themes/enfold-child/assets/js/admin-post-validate-metablock.js', array('jquery'), '1.0.2' );
    wp_enqueue_style( 'dev_plugin_admin_post_validate_metabox_css', '/wp-content/themes/enfold-child/assets/css/admin-post-validate-metablock.css', false, '1.0.2' );
    wp_enqueue_style( 'font-awesome', 'https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.4/css/all.min.css', false, '5.15.4');
    
}
add_action( 'admin_enqueue_scripts', 'dev_plugin_lex_admin_enqueue_scripts' );

function dev_plugin_print_validation_row($element, $value){
    $correct = '<i class="far fa-check-circle"></i>';
    $incorrect = '<i class="far fa-times-circle"></i>';
     
    if(gettype($value) == 'integer'){
        $check = ($value > 0) ? "valid" : "invalid"; 
        $check_icon = ($value > 0) ? $correct : $incorrect; 
    } else{
        $check = (strlen($value) > 0) ? "valid" : "invalid"; 
        $check_icon = (strlen($value) > 0) ? $correct : $incorrect; 
    } ?>
     
        <tr class='dev_plugin_valid_row_<?=$check?>' id="dev_plugin_valid_<?= $element; ?>">
            <td class="title"><?=__(ucfirst($element)); ?></td>
            <td class="result"><?= $check_icon ?></td>
        </tr>
    <?php
}

function dev_plugin_validation_check_array($element, $value){
    if($element == "categories" || $element == "product categories"){
        foreach($value as $key => $category ){
            if($category->slug == "geen-categorie"){
                unset($value[$key]);
            }
        }
    }
    return count($value);
}