<?php
/**
 * Page Kit Runtime - Dynamic Elementor Kit Injection
 *
 * Forces Elementor to use a specific Kit ID based on page meta settings.
 * Fixed: Frontend styling, Admin UI protection, and JS Separation.
 * Includes Security fixes (Sanitization + Nonce ignores for read-only context).
 *
 * @package AbdielMskef
 */

if ( ! defined( 'ABSPATH' ) ) {
  exit;
}

/**
 * 1. CONTEXT DETECTIVE
 */
function abdielmskef_get_current_context_id() {
  $found_id = 0;

  // A. Frontend
  if ( ! is_admin() && ( get_the_ID() || is_singular() ) ) {
    $id = get_the_ID();
    if ( $id ) {
      $found_id = $id;
    } else {
      global $post;
      if ( isset( $post->ID ) ) {
        $found_id = $post->ID;
      }
    }
  }

  // B. Request Variables
  // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Reading context ID only, no state change.
  if ( ! $found_id ) {
    $vars = [ 'editor_post_id', 'post', 'post_id', 'elementor-preview' ];
    foreach ( $vars as $var ) {
      if ( isset( $_REQUEST[ $var ] ) && is_numeric( $_REQUEST[ $var ] ) ) {
        $found_id = (int) $_REQUEST[ $var ];
        break;
      }
    }
  }

  // C. Referer Scan
  // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized -- We verify content in logic below.
  if ( ! $found_id && ! empty( $_SERVER['HTTP_REFERER'] ) ) {
    // FIX: Sanitize and Unslash the Referer
    $raw_referer = isset( $_SERVER['HTTP_REFERER'] ) ? sanitize_text_field( wp_unslash( $_SERVER['HTTP_REFERER'] ) ) : '';
    
    // FIX: Use wp_parse_url instead of parse_url
    $query = wp_parse_url( $raw_referer, PHP_URL_QUERY );
    
    if ( $query ) {
      parse_str( $query, $params );
      if ( isset( $params['post'] ) && is_numeric( $params['post'] ) ) {
        $found_id = (int) $params['post'];
      } elseif ( isset( $params['editor_post_id'] ) && is_numeric( $params['editor_post_id'] ) ) {
        $found_id = (int) $params['editor_post_id'];
      }
    }
  }

  return (int) $found_id;
}

/**
 * 2. LOGIC: Get Target Kit ID
 */
function abdielmskef_get_target_kit_id() {
  // JS Preview Override
  // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Reading preview param only.
  if ( ! empty( $_GET['abdielmskef_preview_kit'] ) ) {
    return (int) $_GET['abdielmskef_preview_kit'];
  }

  $post_id = abdielmskef_get_current_context_id();

  if ( ! $post_id || 'elementor_library' === get_post_type( $post_id ) ) {
    return 0;
  }

  $target_kit_id = 0;
  $meta_key      = defined( 'ABDIELMSKEF_META_LOCAL_KIT_ID' ) ? ABDIELMSKEF_META_LOCAL_KIT_ID : 'abdielmskef_local_kit_id';

  $direct_val = get_post_meta( $post_id, $meta_key, true );
  if ( $direct_val ) {
    $target_kit_id = (int) $direct_val;
  }

  if ( ! $target_kit_id ) {
    $page_settings = get_post_meta( $post_id, '_elementor_page_settings', true );
    if ( is_array( $page_settings ) && ! empty( $page_settings[ $meta_key ] ) ) {
      $target_kit_id = (int) $page_settings[ $meta_key ];
    }
  }

  return (int) $target_kit_id;
}

/**
 * 3. INTERCEPTOR
 */
function abdielmskef_intercept_active_kit( $value ) {
  if ( is_admin() && ! defined( 'DOING_AJAX' ) ) {
    // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Context check only.
    $is_elementor_loading = ( isset( $_GET['action'] ) && 'elementor' === $_GET['action'] );
    if ( ! $is_elementor_loading ) {
      return $value; 
    }
  }

  // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Context check only.
  if ( is_admin() && isset( $_GET['page'] ) && 'elementor' === $_GET['page'] ) {
    return $value;
  }

  $custom_kit_id = abdielmskef_get_target_kit_id();

  if ( $custom_kit_id > 0 ) {
    return $custom_kit_id;
  }

  return $value;
}

add_filter( 'pre_option_elementor_active_kit', 'abdielmskef_intercept_active_kit' );
add_filter( 'option_elementor_active_kit', 'abdielmskef_intercept_active_kit' );

/**
 * 4. FRONTEND STYLE SWAP
 */
add_action( 'elementor/frontend/after_enqueue_styles', 'abdielmskef_swap_frontend_styles', 20 );

function abdielmskef_swap_frontend_styles() {
  if ( ! class_exists( 'Elementor\\Plugin' ) ) return;

  $target_kit_id = abdielmskef_get_target_kit_id();
  if ( $target_kit_id === 0 ) return;

  $loaded_kit_id = (int) \Elementor\Plugin::$instance->kits_manager->get_active_id();

  if ( $loaded_kit_id !== $target_kit_id ) {
    wp_dequeue_style( 'elementor-post-' . $loaded_kit_id );
    wp_deregister_style( 'elementor-post-' . $loaded_kit_id );

    if ( class_exists( 'Elementor\\Core\\Files\\CSS\\Post' ) ) {
      if ( method_exists( 'Elementor\\Core\\Files\\CSS\\Post', 'create' ) ) {
        $css_file = \Elementor\Core\Files\CSS\Post::create( $target_kit_id );
      } else {
        $css_file = new \Elementor\Core\Files\CSS\Post( $target_kit_id );
      }
      if ( $css_file ) {
        $css_file->enqueue();
      }
    }
  }
}

/**
 * 5. JS BODY CLASS ENFORCER (Standardized Version)
 * Enqueues external JS and passes data via wp_localize_script.
 */
add_action( 'wp_enqueue_scripts', 'abdielmskef_enqueue_body_enforcer', 999 );
add_action( 'elementor/editor/after_enqueue_scripts', 'abdielmskef_enqueue_body_enforcer', 999 );

function abdielmskef_enqueue_body_enforcer() {
  $target_kit_id = abdielmskef_get_target_kit_id();
  if ( $target_kit_id === 0 ) return;

  // Remove filters temporarily to get the REAL global ID
  remove_filter( 'pre_option_elementor_active_kit', 'abdielmskef_intercept_active_kit' );
  remove_filter( 'option_elementor_active_kit', 'abdielmskef_intercept_active_kit' );
  $real_global_id = get_option( 'elementor_active_kit' );
  add_filter( 'pre_option_elementor_active_kit', 'abdielmskef_intercept_active_kit' );
  add_filter( 'option_elementor_active_kit', 'abdielmskef_intercept_active_kit' );

  if ( $target_kit_id == $real_global_id ) return;

  wp_enqueue_script(
    'abdielmskef-body-enforcer',
    ABDIELMSKEF_URL . 'assets/js/body-enforcer.js',
    [], 
    ABDIELMSKEF_VERSION,
    true 
  );

  wp_localize_script( 'abdielmskef-body-enforcer', 'abdielmskefBodyData', [
    'targetClass' => 'elementor-kit-' . $target_kit_id,
    'removeClass' => 'elementor-kit-' . $real_global_id,
  ]);
}