<?php

// hide support for certain admin "features" (metaboxes) for some pages
function hide_features() {
  if ( isset($_GET['action'])  && $_GET['action'] === 'edit' ) {
    $post_id = $_GET['post'] ? $_GET['post'] : $_POST['post_ID'];
    if( !isset( $post_id ) ) return;

    $templated_pages_names = array(
      // 'template-contact.php',
    );

    $templated_pages_ids = array();

    foreach ($templated_pages_names as $page_name) {
      $templated_page_id = get_page_by_custom_template($page_name, 'id');
      if ($templated_page_id) {
        $templated_pages_ids[] = $templated_page_id;
      }
    }

    $optioned_pages_ids = array(
      get_option('page_for_posts'),
      get_option('page_on_front')
    );
    $pages_no_content_editor = array_merge($optioned_pages_ids, $templated_pages_ids);
    $features_to_remove = array('editor');
    // for some reason we're unable to remove thumbnail and page-attributes support with this...

    if(in_array($post_id, $pages_no_content_editor)){
      foreach ($features_to_remove as $feature) {
        remove_post_type_support('page', $feature);
      }
    }
  }
}

add_action( 'do_meta_boxes', 'hide_features' );