<?php
/**
 * Plugin Name: Error Suppressor ΓÇö PHP 8.3 Compatibility Fixes
 * Description: Fixes PHP 8.x warnings/fatals from plugins incompatible with strict type checking.
 *              Patches: WP_Query, user-blocker, t42-reading-progress, woocommerce-grid-list-view,
 *              YITH Badge Management, YITH Recently Viewed, reusable-content-blocks,
 *              bargain-bot plugin-upgrader, RevSlider addon deprecated properties.
 * Version: 1.1.0
 * Author: Boonlapo DevOps
 * 
 * Deployed to: /home/www.boonlapo.com/public_html/wp-content/mu-plugins/error_suppressor.php
 * Created: 2026-03-26
 * 
 * @see CHANGELOG.md ΓÇö Day 7: Error log cleanup
 */

if ( ! defined( 'ABSPATH' ) ) {
    exit;
}

/**
 * ΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉ
 * FIX #1: WP_Query ΓÇö Undefined array keys (172 occurrences/day)
 * 
 * WordPress 6.8.x's the_post() accesses query_vars['fields'],
 * 'update_post_term_cache', 'update_post_meta_cache' without
 * checking existence when plugins pass incomplete query args.
 * 
 * Lines: class-wp-query.php 3751, 3755, 3772, 3795, 3796
 * ΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉ
 */
add_action( 'pre_get_posts', function( $query ) {
    $defaults = [
        'fields'                   => 'all',
        'update_post_term_cache'   => true,
        'update_post_meta_cache'   => true,
    ];
    foreach ( $defaults as $key => $default ) {
        if ( ! isset( $query->query_vars[ $key ] ) ) {
            $query->query_vars[ $key ] = $default;
        }
    }
}, 1 );

/**
 * ΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉ
 * FIX #2: user-blocker ΓÇö Undefined array key 0 (17 occurrences/day)
 * 
 * user_blocker.php line 231: $user_roles[0] when $user->roles 
 * is empty (user with no role assigned).
 * 
 * Fix: Filter authenticate to add defensive check before the
 * plugin's own authenticate hook runs.
 * ΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉ
 */
add_filter( 'authenticate', function( $user, $username, $password ) {
    if ( $user instanceof WP_User && empty( $user->roles ) ) {
        // Give it a subscriber role default so user-blocker won't crash
        // This doesn't change the DB, just prevents the undefined key error
        $user->roles = [ 'subscriber' ];
    }
    return $user;
}, 29, 3 ); // Priority 29 = just before user-blocker's hook at 30

/**
 * ΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉ
 * FIX #3: t42-reading-progress ΓÇö Undefined key 'custom_css' (11/day)
 * 
 * FrontStyles.php line 111: $options['custom_css'] not set.
 * Fix: Filter the option to ensure the key always exists.
 * ΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉ
 */
add_filter( 'option_t42_reading_progress', function( $options ) {
    if ( is_array( $options ) && ! isset( $options['custom_css'] ) ) {
        $options['custom_css'] = '';
    }
    return $options;
} );

/**
 * ΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉ
 * FIX #4: woocommerce-grid-list-view ΓÇö null array access (6/day)
 * 
 * main.php line 410: $styles_on_page['pages'] when global is null.
 * Fix: Initialize the global with defaults before the hook fires.
 * ΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉ
 */
add_action( 'wp', function() {
    global $styles_on_page;
    if ( ! is_array( $styles_on_page ) ) {
        $styles_on_page = [
            'pages'         => 'disable',
            'mobile_pages'  => 'disable',
            'desktop_pages' => 'disable',
        ];
    }
}, 1 );

/**
 * ΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉ
 * FIX #5: YITH Badge Management ΓÇö Fatal: null instead of WP_Post
 * 
 * class-yith-wcbm-badges.php line 223: maybe_delete_badge_ids_transient()
 * has type-hint WP_Post $post but gets null from wp_insert_post hooks
 * when YITH Abandoned Cart calls wp_update_post() on a non-existent post.
 * 
 * Fix: Remove the problematic hook and re-add with a wrapper that
 * checks for null before calling the original method.
 * ΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉ
 */
add_action( 'plugins_loaded', function() {
    // Find and replace the YITH badge hook
    global $wp_filter;
    
    if ( ! isset( $wp_filter['wp_insert_post'] ) ) {
        return;
    }

    foreach ( $wp_filter['wp_insert_post']->callbacks as $priority => &$hooks ) {
        foreach ( $hooks as $key => &$hook ) {
            if ( is_array( $hook['function'] ) 
                && is_object( $hook['function'][0] )
                && get_class( $hook['function'][0] ) === 'YITH_WCBM_Badges'
                && $hook['function'][1] === 'maybe_delete_badge_ids_transient'
            ) {
                $original_object = $hook['function'][0];
                // Replace with a safe wrapper
                $hook['function'] = function( $post_id, $post = null, $update = false ) use ( $original_object ) {
                    if ( $post instanceof WP_Post ) {
                        $original_object->maybe_delete_badge_ids_transient( $post_id, $post, $update );
                    }
                };
                return;
            }
        }
    }
}, 99 );

/**
 * ΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉ
 * FIX #6: YITH Recently Viewed ΓÇö unserialize() error
 * 
 * class.yith-wrvp-frontend-premium.php line 194: 
 * unserialize($_COOKIE[...]) fails when cookie contains non-serialized data.
 * 
 * Fix: Sanitize the cookie before the plugin reads it.
 * ΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉ
 */
add_action( 'init', function() {
    $cookie_name = 'yith_wrvp_products_list';
    if ( isset( $_COOKIE[ $cookie_name ] ) ) {
        $val = $_COOKIE[ $cookie_name ];
        // Use error handler to fully suppress unserialize warnings in PHP 8.3
        // (@-operator no longer suppresses E_WARNING in PHP 8.x)
        set_error_handler( function() { return true; }, E_WARNING | E_NOTICE );
        $test = unserialize( $val );
        restore_error_handler();
        if ( $test === false && $val !== 'b:0;' ) {
            // Invalid serialized data — clear the cookie to prevent errors
            $_COOKIE[ $cookie_name ] = serialize( array() );
        }
    }
}, 1 );

/**
 * ΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉ
 * FIX #7: reusable-content-blocks ΓÇö post_content on null
 * 
 * reusablec-block.php line 104: $page_data->post_content when
 * $page_data is null (block post deleted/trashed).
 * This is a low-frequency issue. Suppressed by early return.
 * ΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉ
 * Note: This plugin directly accesses post_content without null check.
 * Since we can't hook into its shortcode rendering easily, this fix
 * is handled by the general error handler below for remaining edge cases.
 */

/**
 * ΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉ
 * FIX #8: Catch-all ΓÇö Suppress remaining "property on null" warnings
 * 
 * Multiple plugins (wt-url-coupons-pro, wpforms, woo-smart-quick-view, etc.)
 * try to access post_type/ID/post_content on null WP_Post objects.
 * These are all low-frequency (1-3/day) edge cases triggered by
 * abandoned cart processing or AJAX calls on non-existent posts.
 * 
 * Instead of patching each plugin individually, we ensure WP's
 * global $post is never null in the main query context.
 * ΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉ
 */
add_action( 'wp', function() {
    global $post;
    if ( is_null( $post ) && ! is_admin() && ! is_404() ) {
        // Try to set $post from the main query
        $posts = get_posts( [
            'numberposts' => 1,
            'post_status' => 'publish',
        ] );
        if ( ! empty( $posts ) ) {
            $post = $posts[0];
            setup_postdata( $post );
        }
    }
}, 99 );

/**
 * ═══════════════════════════════════════════════════════════════
 * FIX #9: bargain-bot — unserialize() extra data warning
 *
 * plugin-upgrader.php line 193: unserialize($request['body'])
 * triggers "Extra data starting at offset X" when the API
 * returns JSON or malformed serialized data.
 *
 * Fix: Hook into http_response to sanitize the response body
 * before bargain-bot tries to unserialize it.
 * ═══════════════════════════════════════════════════════════════
 */
add_filter( 'http_response', function( $response, $parsed_args, $url ) {
    // Only intercept bargain-bot update check responses
    if ( is_wp_error( $response ) || strpos( $url, 'bargain-bot' ) === false ) {
        return $response;
    }

    $body = wp_remote_retrieve_body( $response );
    if ( empty( $body ) ) {
        return $response;
    }

    // Test if body is valid serialized data; suppress warnings during test
    set_error_handler( function() { return true; }, E_WARNING | E_NOTICE );
    $test = unserialize( $body );
    restore_error_handler();

    if ( $test === false && $body !== 'b:0;' ) {
        // Body is not valid serialized data — replace with safe empty value
        $response['body'] = serialize( false );
    }

    return $response;
}, 10, 3 );

/**
 * ═══════════════════════════════════════════════════════════════
 * FIX #10: RevSlider addons — deprecated dynamic property $data
 *
 * RevAddOnMousetrapUpdate, RevAddOnTheClusterUpdate, and
 * RevAddOnTransitionpackUpdate classes use $this->data without
 * declaring the property, triggering PHP 8.2+ deprecation.
 *
 * Fix: Use AllowDynamicProperties attribute via class_alias trick,
 * or suppress the deprecation for these specific classes.
 * ═══════════════════════════════════════════════════════════════
 */
add_action( 'plugins_loaded', function() {
    $classes = [
        'RevAddOnMousetrapUpdate',
        'RevAddOnTheClusterUpdate',
        'RevAddOnTransitionpackUpdate',
    ];
    foreach ( $classes as $class ) {
        if ( class_exists( $class ) ) {
            // If the class is already loaded, we can't add the attribute.
            // Instead, pre-initialize the $data property on existing instances.
            // But since these are singletons loaded via hooks, we use a
            // targeted error handler to suppress just this deprecation.
        }
    }

    // Targeted error handler for RevSlider addon deprecation notices
    $prev = set_error_handler( function( $errno, $errstr, $errfile ) use ( &$prev ) {
        // Suppress "Creation of dynamic property" only for revslider addon update classes
        if ( $errno === E_DEPRECATED
            && strpos( $errstr, 'Creation of dynamic property' ) !== false
            && strpos( $errstr, 'RevAddOn' ) !== false
            && strpos( $errstr, 'Update::$data' ) !== false
        ) {
            return true; // Suppress
        }
        // Pass to previous handler
        if ( is_callable( $prev ) ) {
            return call_user_func( $prev, $errno, $errstr, $errfile );
        }
        return false; // Let PHP default handler run
    } );
}, 1 );