WooCommerce: Distraction-Free WP Admin for Store Management

/**
 * @snippet       "Store Admin" View @ WordPress Dashboard
 * @tutorial      https://businessbloomer.com/woocommerce-customization
 * @author        Rodolfo Melogli, Business Bloomer
 * @compatible    WooCommerce 10
 * @community     https://businessbloomer.com/club/
 */

// ================================
// ADD STORE ADMIN TOGGLE BUTTON
// ================================

function bbloomer_add_store_admin_toggle_button( $wp_admin_bar ) {
    if ( ! current_user_can( 'manage_woocommerce' ) ) return;

    $is_store_admin = isset( $_COOKIE['store_admin'] ) && $_COOKIE['store_admin'] == '1';
    $url = add_query_arg( 'toggle_store_admin', $is_store_admin ? '0' : '1', admin_url( 'admin.php?page=wc-orders' ) );

    $wp_admin_bar->add_node( [
        'id'    => 'store-admin-toggle',
        'title' => $is_store_admin
            ? '<span class="ab-icon dashicons dashicons-admin-generic"></span> Switch to WP Admin'
            : '<span class="ab-icon dashicons dashicons-cart"></span> Switch to Store Admin',
        'href'  => $url,
    ] );
}
add_action( 'admin_bar_menu', 'bbloomer_add_store_admin_toggle_button', 100 );

// ================================
// SET / DELETE COOKIE ON TOGGLE
// ================================

function bbloomer_handle_store_admin_toggle() {
    if ( ! current_user_can( 'manage_woocommerce' ) ) return;
    if ( isset( $_GET['toggle_store_admin'] ) ) {
        if ( $_GET['toggle_store_admin'] == '1' ) {
            setcookie( 'store_admin', '1', time() + DAY_IN_SECONDS, COOKIEPATH, COOKIE_DOMAIN, is_ssl() );
            $_COOKIE['store_admin'] = '1'; // so it's immediately available
        } else {
            setcookie( 'store_admin', '', time() - 3600, COOKIEPATH, COOKIE_DOMAIN, is_ssl() );
            unset( $_COOKIE['store_admin'] );
        }
        // Redirect to clean URL (remove toggle param)
        wp_safe_redirect( remove_query_arg( 'toggle_store_admin' ) );
        exit;
    }
}
add_action( 'admin_init', 'bbloomer_handle_store_admin_toggle' );

// ================================
// FILTER ADMIN MENU IN STORE MODE
// ================================

function bbloomer_filter_admin_menu_for_store_admin() {
    if ( ! current_user_can( 'manage_woocommerce' ) ) return;
    if ( ! isset( $_COOKIE['store_admin'] ) || $_COOKIE['store_admin'] != '1' ) return;
    global $menu;
    foreach ( $menu as $key => $item ) {
        $slug = $item[2];
        $is_woo = (
            $slug === 'woocommerce' ||
            strpos( $slug, 'wc-' ) === 0 ||
            strpos( $slug, 'woocommerce' ) !== false ||
            strpos( $slug, 'edit.php?post_type=shop_' ) === 0 ||
            strpos( $slug, 'edit.php?post_type=product' ) === 0
        );
        if ( ! $is_woo ) {
            remove_menu_page( $slug );
        }
    }
}
add_action( 'admin_menu', 'bbloomer_filter_admin_menu_for_store_admin', 9999 );

// ================================
// APPEND COOKIE MODE TO ADMIN_URLS
// ================================

function bbloomer_add_store_admin_param_to_admin_urls( $url, $path, $scheme ) {
    if ( ! isset( $_COOKIE['store_admin'] ) || $_COOKIE['store_admin'] != '1' ) return $url;
    return add_query_arg( 'store_admin', '1', $url ); // purely cosmetic if needed
}
add_filter( 'admin_url', 'bbloomer_add_store_admin_param_to_admin_urls', 10, 3 );

// ================================
// STYLES FOR TOGGLE BUTTON
// ================================

function bbloomer_store_admin_button_styles() {
    ?>
    <style>
        #wp-admin-bar-store-admin-toggle > .ab-item {
            background-color: #d63638;
            color: #fff;
        }
        #wp-admin-bar-store-admin-toggle:hover > .ab-item {
            background-color: #b52d2f;
        }
        #wp-admin-bar-store-admin-toggle > .ab-item .dashicons {
            color: #fff;
        }
    </style>
    <?php
}
add_action( 'admin_head', 'bbloomer_store_admin_button_styles' );