mu-plugin for wordpress

mu-singh.php

<?php

/**
 * Plugin Name: MU Singh
 * Description: This plugin is used to provide all helper functions and some other functionality for wordpress websites.
 */

/*
mkdir -p wp-content/mu-plugins/mu-singh && cd wp-content/mu-plugins/mu-singh && composer require digitalnature/php-ref filp/whoops && cd ../../../
*/

defined('ABSPATH') || exit;

if (file_exists(__DIR__ . "/mu-singh/vendor/autoload.php")) {
    require_once __DIR__ . "/mu-singh/vendor/autoload.php";
    // ref::config('showPrivateMembers', true);
    // ref::config('showIteratorContents', true);
}

if (class_exists('Whoops\Run') && mu_singh_is_dev_environment()) {
    $_whoops = new \Whoops\Run();
    $_whoops->pushHandler(new \Whoops\Handler\PrettyPageHandler);
    $_whoops->silenceErrorsInPaths('/.*/', E_WARNING | E_NOTICE);
    // $_whoops->pushHandler(new \Whoops\Handler\JsonResponseHandler());
    $_whoops->register();
}

// helper functions copy from https://gist.github.com/pritdeveloper/6c1b3ba4770731fc48fb6fbd329b1430/raw

function mu_singh_is_dev_environment(): bool
{
    $host = $_SERVER['HTTP_HOST'] ?? '';

    $dev_hosts = [
        'localhost',
        '.test',
        '.dev',
        '.local',
        '.staging',
        'staging.',
        'stg.',
        'dev.',
    ];

    foreach ($dev_hosts as $pattern) {
        if (str_contains($host, $pattern)) {
            return true;
        }
    }

    return defined('WP_DEBUG') && WP_DEBUG;
}

function mu_singh_fix_upload_url(string $url): string
{
    $staging = '';
    $production = '';
    
    if(!($staging && $production)) {
        return $url;
    }
    
    if (!str_contains($url, $staging)) {
        return $url;
    }
    
    $relative = str_replace($staging, '', $url);
    $local_path = WP_CONTENT_DIR . $relative;
    
    if (!file_exists($local_path)) {
        return str_replace($staging, $production, $url);
    }
    
    return $url;
}

add_filter('wp_get_attachment_url', function ($url) {
    return mu_singh_fix_upload_url($url);
});

// Modify each srcset entry
add_filter('wp_calculate_image_srcset', function ($sources) {
    foreach ($sources as $width => $source) {
        $sources[$width]['url'] = mu_singh_fix_upload_url($source['url']);
    }
    return $sources;
});