/**
 * PNP ULTIMATE MASTER SPEED OPTIMIZER - VERSION 6.0
 * Features: A+ Grade, Instant Typing, PK Phone Validation, Celebration, Admin Safe.
 * NO DOUBLE CLICK FIX INCLUDED.
 */

/* ==========================================================================
   1. CORE SPEED & ADMIN SAFETY (SMART HEARTBEAT)
   ========================================================================== */
add_action( 'init', function() {
    $is_privileged_user = current_user_can('manage_woocommerce') || current_user_can('manage_options');
    $is_elementor = isset($_GET['elementor-preview']) || (isset($_GET['action']) && $_GET['action'] == 'elementor');

    if ( is_admin() || $is_privileged_user || $is_elementor ) {
        remove_action( 'shutdown', 'wp_ob_end_flush_all', 1 );
        return; 
    }

    wp_deregister_script('heartbeat');
    remove_action( 'shutdown', 'wp_ob_end_flush_all', 1 );
}, 1);

/* ==========================================================================
   2. ASSET CLEANUP (VISITOR ONLY)
   ========================================================================== */
add_action( 'wp_enqueue_scripts', function() {
    if ( current_user_can('edit_posts') || 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_script( 'sbr-scripts' ); 
    }

    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 ); }
    }
}, 9999);

/* ==========================================================================
   3. INSTANT TYPING & PK PHONE VALIDATION
   ========================================================================== */
add_filter( 'woocommerce_checkout_fields', function( $fields ) {
    if ( is_admin() ) return $fields;
    $instant = ['billing_first_name', 'billing_last_name', 'billing_email', 'billing_phone'];
    foreach ( $instant 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);

add_action('woocommerce_checkout_process', function() {
    if (isset($_POST['billing_phone'])) {
        $phone = str_replace([' ', '-', '+'], '', $_POST['billing_phone']);
        if ( !preg_match('/^03[0-9]{9}$/', $phone) ) {
            wc_add_notice( '<strong>Invalid Phone:</strong> Use 11 digits starting with 03 (e.g. 03001234567).', 'error' );
        }
    }
});

/* ==========================================================================
   4. FRONT-END: CHECKER, CELEBRATION, & DOUBLE-CLICK FIX
   ========================================================================== */
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-valid { color: #28a745; }
        .pnp-invalid { 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-text { font-size:18px; color:#6a5950; margin-bottom:30px; line-height:1.5; }
        .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 Order... ✨</div>
            <div class="pnp-text">Thank you for choosing Pins & Pearls.</div>
            <div class="pnp-load"></div>
        </div>
    </div>

    <script data-no-optimize="1">
    jQuery(document).ready(function($) {
        const phoneInput = $('#billing_phone');
        if(phoneInput.length) {
            const msg = $('<span id="pnp-phone-msg"></span>').insertAfter(phoneInput);
            phoneInput.on('input', function() {
                let val = $(this).val().replace(/[^0-9]/g, '');
                if(val.length > 11) val = val.substring(0,11);
                $(this).val(val);
                if (val.startsWith('03') && val.length === 11) { msg.html('✓ Valid Format').attr('class','pnp-valid'); }
                else { msg.html('× Format: 03XXXXXXXXX').attr('class','pnp-invalid'); }
            });
        }

        $(document).on('click', '#place_order', function() {
            const phone = phoneInput.val();
            const terms = $('#terms').length ? $('#terms').is(':checked') : true;
            if (phone.length === 11 && phone.startsWith('03') && terms) {
                $('#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 );

/* ==========================================================================
   5. DATABASE & PRELOAD
   ========================================================================== */
add_filter( 'woocommerce_admin_disabled', '__return_true' );
add_filter( 'woocommerce_enable_admin_notes', '__return_false' );
add_action( 'wp_head', function() {
    if ( is_front_page() && !current_user_can('edit_posts') ) {
        echo '<link rel="preload" as="image" href="https://pinsandpearls.com/wp-content/uploads/2025/11/Knit-Edit-Website-2.jpg">';
    }
}, 1 );