<?php
/**
 * Plugin Name: Quiwix Performance
 * Plugin URI: https://quiwix.com
 * Description: Mejoras de rendimiento, SEO y conversión para Quiwix
 * Version: 1.0.0
 * Author: Quiwix
 */

// Evitar acceso directo
if (!defined('ABSPATH')) exit;

// ===== 1. META DESCRIPTION =====
add_action('wp_head', 'quiwix_add_meta_description', 0);
function quiwix_add_meta_description() {
    if (is_front_page()) {
        echo '<meta name="description" content="Quiwix - Software colombiano de facturación electrónica y POS. Factura, controla inventario y cumple con la DIAN desde cualquier dispositivo.">' . "\n";
    }
}

// ===== 2. SCHEMA.ORG LOCAL BUSINESS JSON-LD =====
add_action('wp_head', 'quiwix_add_schema_org', 1);
function quiwix_add_schema_org() {
    if (is_front_page()) {
    ?>
<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "SoftwareApplication",
  "name": "Quiwix",
  "applicationCategory": "BusinessApplication",
  "operatingSystem": "Web",
  "description": "Software colombiano de facturación electrónica y POS",
  "url": "https://quiwix.com",
  "offers": {
    "@type": "Offer",
    "price": "75000",
    "priceCurrency": "COP"
  },
  "author": {
    "@type": "Organization",
    "name": "Quiwix",
    "url": "https://quiwix.com",
    "contactPoint": {
      "@type": "ContactPoint",
      "telephone": "+57-3189403793",
      "contactType": "sales",
      "availableLanguage": ["Spanish"]
    },
    "address": {
      "@type": "PostalAddress",
      "addressLocality": "Sincelejo",
      "addressRegion": "Sucre",
      "addressCountry": "CO"
    }
  }
}
</script>
    <?php
    }
}

// ===== 3. PRECONNECT HINTS =====
add_action('wp_head', 'quiwix_add_preconnect', 0);
function quiwix_add_preconnect() {
    ?>
<link rel="preconnect" href="https://www.facebook.com">
<link rel="preconnect" href="https://connect.facebook.net">
<link rel="preconnect" href="https://www.googletagmanager.com">
<link rel="dns-prefetch" href="//www.facebook.com">
<link rel="dns-prefetch" href="//connect.facebook.net">
<link rel="dns-prefetch" href="//www.googletagmanager.com">
    <?php
}

// ===== 4. DEFER NON-CRITICAL JS =====
add_filter('script_loader_tag', 'quiwix_defer_scripts', 10, 3);
function quiwix_defer_scripts($tag, $handle, $src) {
    $defer_handles = array(
        'jquery-migrate',
        'comment-reply',
        'divi-custom-script',
    );
    
    // Defer all Divi builder scripts
    if (strpos($handle, 'divi') !== false || strpos($handle, 'et-core') !== false) {
        $defer_handles[] = $handle;
    }
    
    if (in_array($handle, $defer_handles)) {
        return str_replace(' src', ' defer src', $tag);
    }
    return $tag;
}

// ===== 5. ASYNC NON-CRITICAL STYLES =====
add_filter('style_loader_tag', 'quiwix_async_styles', 10, 4);
function quiwix_async_styles($html, $handle, $href, $media) {
    $async_handles = array('divi-style', 'et-builder-modules-style');
    if (in_array($handle, $async_handles)) {
        $html = str_replace("media='all'", "media='print' onload=\"this.media='all'\"", $html);
    }
    return $html;
}

// ===== 6. LAZY LOAD HERO IMAGES =====
add_action('wp_footer', 'quiwix_lazy_load_fix', 100);
function quiwix_lazy_load_fix() {
    ?>
<script>
document.addEventListener('DOMContentLoaded', function() {
    // Add loading="lazy" to all images that don't have it
    var imgs = document.querySelectorAll('img:not([loading])');
    for (var i = 0; i < imgs.length; i++) {
        // Skip tiny images (pixel trackers)
        if (imgs[i].width > 50 && imgs[i].height > 50) {
            imgs[i].setAttribute('loading', 'lazy');
        }
    }
});
</script>
    <?php
}

// ===== 7. REMOVE WP EMOJI (performance) =====
add_action('init', 'quiwix_remove_emojis');
function quiwix_remove_emojis() {
    remove_action('wp_head', 'print_emoji_detection_script', 7);
    remove_action('admin_print_scripts', 'print_emoji_detection_script');
    remove_action('wp_print_styles', 'print_emoji_styles');
    remove_action('admin_print_styles', 'print_emoji_styles');
    remove_filter('the_content_feed', 'wp_staticize_emoji');
    remove_filter('comment_text_rss', 'wp_staticize_emoji');
    remove_filter('wp_mail', 'wp_staticize_emoji_for_email');
}

// ===== 8. ADD width/height TO IMAGES THAT MISS THEM =====
// This is handled client-side via JS in the lazy load fix above

// ===== 9. CACHE HEADERS VIA .htaccess (if Apache) =====
// Para nginx, esto se configura en el servidor

// ===== 10. SET SITE DESCRIPTION =====
add_filter('pre_option_blogdescription', 'quiwix_set_description');
function quiwix_set_description($value) {
    if (empty($value)) {
        return 'Software de facturación electrónica y POS para Colombia';
    }
    return $value;
}

// ===== 11. GLOBAL CUSTOM CSS =====
add_action('wp_head', 'quiwix_global_css', 5);
function quiwix_global_css() {
    ?>
<style id="quiwix-global-css">
:root {
  --green-50: #F0FDF4;
  --green-100: #DCFCE7;
  --green-200: #BBF7D0;
  --green-300: #86EFAC;
  --green-400: #4ADE80;
  --green-500: #22C55E;
  --green-600: #16A34A;
  --green-700: #15803D;
  --green-800: #166534;
  --green-900: #064E3B;
  --amber-400: #FBBF24;
  --amber-500: #F59E0B;
  --amber-600: #D97706;
  --gray-50: #F9FAFB;
  --gray-100: #F3F4F6;
  --gray-200: #E5E7EB;
  --gray-300: #D1D5DB;
  --gray-400: #9CA3AF;
  --gray-500: #6B7280;
  --gray-600: #4B5563;
  --gray-700: #374151;
  --gray-800: #1F2937;
  --gray-900: #111827;
  --white: #FFFFFF;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
  --radius: 12px;
  --radius-lg: 20px;
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(40px); }
  to { opacity: 1; transform: translateY(0); }
}
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 1rem 2rem; display: flex; align-items: center;
  justify-content: space-between; transition: all 0.3s ease;
  background: transparent;
}
.navbar.scrolled {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
}
.navbar .logo { display: flex; align-items: center; gap: 0.5rem; text-decoration: none; }
.navbar .logo img { height: 40px; }
.navbar .logo span { font-size: 1.4rem; font-weight: 800; color: var(--green-700); letter-spacing: -0.5px; }
.navbar .logo span small { font-weight: 400; color: var(--gray-500); font-size: 0.7rem; }
.nav-links { display: flex; align-items: center; gap: 2rem; list-style: none; }
.nav-links a { text-decoration: none; color: var(--gray-600); font-weight: 500; font-size: 0.9rem; transition: color 0.2s; position: relative; }
.nav-links a::after { content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px; background: var(--green-500); transition: width 0.3s; }
.nav-links a:hover { color: var(--green-600); }
.nav-links a:hover::after { width: 100%; }
.nav-cta { background: var(--green-600); color: #fff !important; padding: 0.6rem 1.5rem; border-radius: 50px; font-weight: 600 !important; }
.nav-cta::after { display: none !important; }
.nav-cta:hover { background: var(--green-700) !important; transform: translateY(-2px); box-shadow: 0 4px 15px rgba(22,163,74,0.4); }
.mobile-menu-btn { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: none; padding: 4px; }
.mobile-menu-btn span { display: block; width: 24px; height: 2px; background: var(--gray-700); border-radius: 2px; }

/* Blog grid */
.blog-quiwix-header {
  padding: 8rem 2rem 3rem;
  background: linear-gradient(170deg, #F0FDF4 0%, #FFFFFF 40%, #FFFFFF 70%, #F0FDF4 100%);
  text-align: center;
}
.blog-quiwix-header .blog-tag {
  display: inline-block; background: rgba(22,163,74,0.1); color: var(--green-700);
  padding: 0.3rem 1rem; border-radius: 50px; font-size: 0.8rem; font-weight: 600;
  margin-bottom: 1rem; text-transform: uppercase;
}
.blog-quiwix-header h1 {
  font-size: clamp(2rem, 4vw, 3rem); font-weight: 900; color: var(--gray-900);
  margin-bottom: 1rem; letter-spacing: -1px;
}
.blog-quiwix-header p { color: var(--gray-500); font-size: 1.1rem; max-width: 600px; margin: 0 auto; }
.blog-grid-section { padding: 4rem 2rem; max-width: 1200px; margin: 0 auto; }
.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.blog-card {
  background: #fff; border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow); border: 1px solid var(--gray-100); transition: all 0.4s;
  display: flex; flex-direction: column;
}
.blog-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-xl); }
.blog-card-image {
  width: 100%; height: 200px;
  background: linear-gradient(135deg, var(--green-100), var(--green-200));
  display: flex; align-items: center; justify-content: center; font-size: 3rem;
}
.blog-card-image .icon-circle {
  width: 80px; height: 80px; background: var(--green-500); border-radius: 50%;
  display: flex; align-items: center; justify-content: center; color: white; font-size: 2rem; font-weight: 700;
}
.blog-card-body { padding: 1.5rem; flex: 1; display: flex; flex-direction: column; }
.blog-card-category {
  display: inline-block; background: var(--green-50); color: var(--green-700);
  font-size: 0.75rem; font-weight: 600; padding: 0.2rem 0.7rem; border-radius: 50px;
  margin-bottom: 0.8rem; text-transform: uppercase; width: fit-content;
}
.blog-card h3 { font-size: 1.1rem; font-weight: 700; color: var(--gray-800); margin-bottom: 0.8rem; }
.blog-card h3 a { color: var(--gray-800); text-decoration: none; }
.blog-card h3 a:hover { color: var(--green-600); }
.blog-card-excerpt { color: var(--gray-500); font-size: 0.9rem; line-height: 1.6; flex: 1; margin-bottom: 1rem; }
.blog-card-meta { display: flex; align-items: center; justify-content: space-between; margin-top: auto; padding-top: 1rem; border-top: 1px solid var(--gray-100); }
.blog-card-date { font-size: 0.8rem; color: var(--gray-400); }
.blog-card-link { font-size: 0.85rem; color: var(--green-600); text-decoration: none; font-weight: 600; }
.blog-card-link:hover { color: var(--green-800); }
.blog-card-link::after { content: ' \2192'; }

/* Demo CTA */
.demo-section {
  background: linear-gradient(135deg, var(--green-900), var(--green-800));
  padding: 6rem 2rem; text-align: center;
}
.demo-section .demo-content { max-width: 700px; margin: 0 auto; }
.demo-section h2 { font-size: clamp(2rem, 4vw, 2.8rem); font-weight: 800; color: #fff; margin-bottom: 1rem; }
.demo-section p { color: rgba(255,255,255,0.7); font-size: 1.1rem; margin-bottom: 2rem; }
.demo-section .btn-primary {
  display: inline-flex; align-items: center; gap: 0.5rem; background: #fff; color: var(--green-800);
  padding: 1rem 2.5rem; border-radius: 50px; text-decoration: none; font-weight: 600; font-size: 1.1rem;
}
.demo-section .btn-primary:hover { background: var(--green-100); color: var(--green-900); }
.demo-section .btn-secondary-light {
  display: inline-flex; align-items: center; gap: 0.5rem; color: rgba(255,255,255,0.8);
  text-decoration: none; font-weight: 500; margin-left: 1rem;
}

/* Footer */
.footer { background: var(--gray-900); color: var(--gray-400); padding: 4rem 2rem 2rem; }
.footer-grid { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 3rem; margin-bottom: 3rem; }
.footer-brand img { height: 36px; margin-bottom: 1rem; }
.footer-brand p { font-size: 0.9rem; line-height: 1.7; max-width: 300px; }
.footer h4 { color: #fff; font-size: 0.9rem; font-weight: 700; margin-bottom: 1rem; text-transform: uppercase; letter-spacing: 1px; }
.footer ul { list-style: none; }
.footer ul li { margin-bottom: 0.6rem; }
.footer ul a { color: var(--gray-400); text-decoration: none; font-size: 0.9rem; }
.footer ul a:hover { color: var(--green-400); }
.footer-bottom { max-width: 1200px; margin: 0 auto; padding-top: 2rem; border-top: 1px solid var(--gray-800); display: flex; justify-content: space-between; font-size: 0.85rem; }

@media (max-width: 768px) {
  .navbar { padding: 0.8rem 1rem; }
  .nav-links { position: fixed; top: 0; right: -100%; width: 260px; height: 100vh; background: #fff; flex-direction: column; padding: 5rem 2rem 2rem; box-shadow: -10px 0 30px rgba(0,0,0,0.1); transition: right 0.3s; gap: 1.2rem; align-items: flex-start; }
  .nav-links.open { right: 0; }
  .mobile-menu-btn { display: flex; }
  .blog-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
  .demo-section { padding: 4rem 1rem; }
}
</style>
    <?php
}

// ===== 12. NAVBAR =====
add_action('wp_body_open', 'quiwix_add_navbar');
function quiwix_add_navbar() {
    // Don't add if already present in page content
    ?>
<nav class="navbar" id="navbar">
  <a href="https://quiwix.com" class="logo">
    <img src="https://quiwix.com/wp-content/uploads/2026/06/quiwix-logo-hd.png" alt="Quiwix" onerror="this.style.display='none'">
    <span>Quiwix <small>| Integrator</small></span>
  </a>
  <button class="mobile-menu-btn" id="menuBtn" aria-label="Menu">
    <span></span><span></span><span></span>
  </button>
  <ul class="nav-links" id="navLinks">
    <li><a href="https://quiwix.com">Inicio</a></li>
    <li><a href="https://quiwix.com/#soluciones">Soluciones</a></li>
    <li><a href="https://quiwix.com/#planes">Planes</a></li>
    <li><a href="/blog">Blog</a></li>
    <li><a href="https://demo.quiwix.com">Demo</a></li>
    <li><a href="https://wa.me/573189403793" class="nav-cta" target="_blank">WhatsApp</a></li>
  </ul>
</nav>
<script>
document.addEventListener('DOMContentLoaded', function() {
  var n = document.getElementById('navbar');
  var b = document.getElementById('menuBtn');
  var l = document.getElementById('navLinks');
  if (b && l) b.addEventListener('click', function() { l.classList.toggle('open'); });
  if (n) window.addEventListener('scroll', function() { n.classList.toggle('scrolled', window.scrollY > 50); });
  if (l) l.querySelectorAll('a').forEach(function(a) { a.addEventListener('click', function() { l.classList.remove('open'); }); });
});
</script>
    <?php
}

// ===== 13. CUSTOM BLOG OVERRIDE =====
add_filter('the_content', 'quiwix_custom_blog_display', 999);
function quiwix_custom_blog_display($content) {
    if (!is_page('blog') && !is_home()) {
        return $content;
    }

    ob_start();
    ?>
    <div class="blog-quiwix-header">
      <span class="blog-tag">Blog</span>
      <h1>Blog Quiwix</h1>
      <p>Todo sobre facturacion electronica, calendarios DIAN y soluciones para contadores en Colombia</p>
    </div>

    <div class="blog-grid-section">
      <div class="blog-grid">
    <?php
    $args = array('post_type' => 'post', 'posts_per_page' => 12, 'post_status' => 'publish');
    $q = new WP_Query($args);
    if ($q->have_posts()) {
        while ($q->have_posts()) {
            $q->the_post();
            $cats = get_the_category();
            $cat = !empty($cats) ? $cats[0]->name : 'General';
            $ex = get_the_excerpt();
            if (empty($ex)) $ex = wp_trim_words(get_the_content(), 20, '...');
            $init = strtoupper(substr(get_the_title(), 0, 1));
            ?>
            <article class="blog-card">
              <div class="blog-card-image"><div class="icon-circle"><?php echo $init; ?></div></div>
              <div class="blog-card-body">
                <span class="blog-card-category"><?php echo esc_html($cat); ?></span>
                <h3><a href="<?php the_permalink(); ?>" target="_blank"><?php the_title(); ?></a></h3>
                <p class="blog-card-excerpt"><?php echo esc_html($ex); ?></p>
                <div class="blog-card-meta">
                  <span class="blog-card-date"><?php echo get_the_date('d M Y'); ?></span>
                  <a href="<?php the_permalink(); ?>" class="blog-card-link" target="_blank">Leer mas</a>
                </div>
              </div>
            </article>
            <?php
        }
    }
    wp_reset_postdata();
    ?>
      </div>
    </div>

    <section class="demo-section">
      <div class="demo-content">
        <h2>Listo para modernizar tu negocio?</h2>
        <p>Descubre por que Quiwix es el software que tu negocio merece.</p>
        <div>
          <a href="https://demo.quiwix.com" class="btn-primary" target="_blank">Probar Demo Gratis</a>
          <a href="https://wa.me/573189403793" class="btn-secondary-light" target="_blank">Hablar con asesor \2192</a>
        </div>
      </div>
    </section>

    <footer class="footer">
      <div class="footer-grid">
        <div class="footer-brand">
          <img src="https://quiwix.com/wp-content/uploads/2026/06/quiwix-logo-hd.png" alt="Quiwix" onerror="this.style.display='none'">
          <p>Software de facturacion electronica SaaS para Colombia. Moderniza tu negocio con Quiwix.</p>
        </div>
        <div>
          <h4>Soluciones</h4>
          <ul>
            <li><a href="https://quiwix.com/#soluciones">POS Electronico</a></li>
            <li><a href="https://quiwix.com/#soluciones">POS Restaurante</a></li>
            <li><a href="https://quiwix.com/#planes">Planes</a></li>
          </ul>
        </div>
        <div>
          <h4>Empresa</h4>
          <ul>
            <li><a href="https://wa.me/573189403793" target="_blank">Contacto</a></li>
            <li><a href="https://quiwix.com/privacidad">Privacidad</a></li>
          </ul>
        </div>
        <div>
          <h4>Contacto</h4>
          <ul>
            <li><a href="https://wa.me/573189403793" target="_blank">WhatsApp: +57 318 9403793</a></li>
            <li>Sincelejo, Sucre</li>
            <li>Colombia</li>
          </ul>
        </div>
      </div>
      <div class="footer-bottom">
        <span>\u00a9 2026 Quiwix. Todos los derechos reservados.</span>
        <span>Hecho en Colombia</span>
      </div>
    </footer>
    <?php
    return ob_get_clean();
}

// ===== 14. REMOVE DEFAULT DIVI CONTENT WRAPPERS ON BLOG =====
add_action('wp', 'quiwix_blog_setup');
function quiwix_blog_setup() {
    if (is_page('blog') || is_home()) {
        // Remove sidebars and default wrappers
        remove_action('et_before_main_content', 'et_divi_output_content_wrapper');
        remove_action('et_after_main_content', 'et_divi_output_content_wrapper_end');
        remove_action('et_after_main_content', 'et_divi_get_sidebar');
        // Remove theme builder layouts
        add_filter('et_theme_builder_template_layouts', '__return_empty_array');
    }
}