/**
 * PNP ULTIMATE MASTER SPEED - v9.0 NUCLEAR EDITION
 * 1. Admin Speed: Kills RankMath Analyzer & Woo Analytics (Fixes "Update" lag)
 * 2. Visitor Speed: A+ Asset Diet & Image Preload
 * 3. Checkout: Instant Typing & PK Phone Validation (03XXXXXXXXX)
 * 4. UX: Celebration Popup, Confetti, & Double-Click Reset
 */

/* ==========================================================================
   1. NUCLEAR ADMIN SPEED (FOR PERMANENT FAST UPDATES)
   ========================================================================== */
if ( is_admin() || current_user_can('edit_posts') ) {
    
    // Kill heavy background scripts that cause 403 errors and slow saves
    add_action('admin_enqueue_scripts', function() {
        wp_deregister_script('rank-math-analyzer');
        wp_deregister_script('rank-math-common');
        wp_deregister_script('rank-math-editor');
        wp_dequeue_script('wc-admin-app'); // Kills heavy Analytics Dashboard
    }, 999);

    // Disable background features that hang the "Update" button
    add_filter('rank_math/modules/content_ai', '__return_false');
    add_filter('woocommerce_admin_disabled', '__return_true');
    add_filter('woocommerce_analytics_enabled', '__return_false');
    add_filter('woocommerce_enable_admin_notes', '__return_false');
    
    // Extend security key life to prevent "Session Expired" errors
    add_filter( 'nonce_life', function () { return 86400; } );

    // Prevent "ob_end_flush" notice lag
    remove_action( 'shutdown', 'wp_ob_end_flush_all', 1 );

    // Preload Hero Image for Admin Preview
    add_action( 'wp_head', function() {
       echo '<link rel="preload" as="image" href="https://pinsandpearls.com/wp-content/uploads/2025/11/Knit-Edit-Website-2.jpg">';
    }, 1 );

    return; // STOP HERE: Do not run visitor restrictions for Admin
}

/* ==========================================================================
   2. VISITOR PERFORMANCE (GTmetrix A+)
   ========================================================================== */
add_action( 'init', function() {
    if ( is_checkout() ) wp_deregister_script('heartbeat');
    remove_action( 'shutdown', 'wp_ob_end_flush_all', 1 );
}, 1);

add_action( 'wp_enqueue_scripts', function() {
    if ( is_admin() || isset($_GET['elementor-preview']) ) return;

    wp_dequeue_style( 'wp-block-library' );
    wp_dequeue_style( 'classic-theme-styles' );

    if ( is_front_page() ) {
        wp_dequeue_script( 'contact-form-7' );
        wp_dequeue_style( 'contact-form-7' );
        wp_dequeue_script( 'sbr-scripts' ); 
        wp_dequeue_style( 'sbr_styles' );
    }

    if ( is_checkout() || is_order_received_page() ) {
        $killers = ['wc-cart-fragments','xt-woofc-js','sbi_scripts','cffscripts','trustindex-js','google-listings-and-ads'];
        foreach ( $killers as $h ) { wp_dequeue_script( $h ); wp_deregister_script( $h ); }
        wp_dequeue_style( 'xt-woofc-css' );
    }
}, 9999);

/* ==========================================================================
   3. CHECKOUT LOGIC: TYPING, PHONE, CELEBRATION
   ========================================================================== */
// A. Remove Typing Lag
add_filter( 'woocommerce_checkout_fields', function( $fields ) {
    $flds = ['billing_first_name', 'billing_last_name', 'billing_email', 'billing_phone'];
    foreach ( $flds as $f ) {
        if ( isset( $fields['billing'][$f]['class'] ) ) {
            $fields['billing'][$f]['class'] = array_diff($fields['billing'][$f]['class'], ['address-field', 'update_totals_on_change']);
        }
    }
    return $fields;
}, 999);

// B. Server-Side Phone Check
add_action('woocommerce_checkout_process', function() {
    if (isset($_POST['billing_phone'])) {
        $p = str_replace([' ', '-', '+'], '', $_POST['billing_phone']);
        if ( !preg_match('/^03[0-9]{9}$/', $p) ) {
            wc_add_notice( '<strong>Invalid Phone:</strong> Use exactly 11 digits starting with 03.', 'error' );
        }
    }
});

// C. Front-End Magic: Checker, Reset & Celebration
add_action( 'wp_footer', function() {
    if ( ! is_checkout() || current_user_can('edit_posts') ) return;
    ?>
    <script src="https://cdn.jsdelivr.net/npm/canvas-confetti@1.6.0/dist/confetti.browser.min.js" data-no-optimize="1"></script>
    <style>
        #pnp-phone-msg { font-size: 12px; margin-top: 5px; display: block; font-weight: 600; }
        .pnp-v { color: #28a745; } .pnp-i { color: #dc3545; }
        #pnp-celebration {
            display:none; position:fixed; inset:0; background: #fff;
            z-index: 2147483647; text-align:center; padding-top:20vh;
            font-family: 'Montserrat', sans-serif;
        }
        .pnp-wrap { max-width:450px; margin:0 auto; padding:20px; }
        .pnp-title { font-size:36px; font-weight:700; color:#26222f; margin-bottom:15px; }
        .pnp-load { width:60px; height:60px; border:4px solid #ffecec; border-top-color:#6a5950; border-radius:50%; animation:pnp-s 1s linear infinite; margin:0 auto; }
        @keyframes pnp-s { to { transform:rotate(360deg); } }
    </style>
    <div id="pnp-celebration"><div class="pnp-wrap"><div class="pnp-title">Processing... ✨</div><p>Finalizing your Pins & Pearls order.</p><div class="pnp-load"></div></div></div>
    <script data-no-optimize="1">
    jQuery(document).ready(function($) {
        const pIn = $('#billing_phone');
        const msg = $('<span id="pnp-phone-msg"></span>').insertAfter(pIn);
        pIn.on('input', function() {
            let v = $(this).val().replace(/[^0-9]/g, '');
            if(v.length > 11) v = v.substring(0,11); $(this).val(v);
            if (v.startsWith('03') && v.length === 11) { msg.html('✓ Valid Format').attr('class','pnp-v'); }
            else if (v.length > 0) { msg.html('× Use 03XXXXXXXXX (11 digits)').attr('class','pnp-i'); }
            else { msg.html(''); }
        });
        $(document).on('click', '#place_order', function() {
            const v = pIn.val();
            if (v.length === 11 && v.startsWith('03') && ($('#terms').is(':checked') || !$('#terms').length)) {
                $('#pnp-celebration').show();
                confetti({ particleCount: 150, spread: 70, origin: { y: 0.6 }, colors: ['#ddd1c1','#6a5950','#ffecec'] });
            }
        });
        $(document.body).on('checkout_error', function() {
            $('#pnp-celebration').hide();
            $('#place_order').prop('disabled', false).removeClass('disabled');
            $('.woocommerce-checkout').removeClass('processing');
        });
    });
    </script>
    <?php
}, 100 );