<?php
/**
 * AdSense Placement & Google Analytics - Helper Functions
 *
 * Funciones para usar en templates:
 * - roi_render_ad_slot('post-top')
 * - roi_render_rail_ads() - Para los margenes laterales del viewport
 * - roi_render_anchor_ads() - Anuncios fijos top/bottom
 * - roi_render_vignette_ad() - Anuncio pantalla completa
 *
 * Funciones auto-registradas en wp_head:
 * - roi_enqueue_adsense_script() - Script principal de AdSense
 * - roi_enqueue_analytics_script() - Script de Google Analytics
 *
 * Funciones auto-registradas en wp_footer:
 * - roi_render_rail_ads() (priority 50)
 * - roi_render_anchor_ads() (priority 51)
 * - roi_render_vignette_ad() (priority 52)
 *
 * Funciones auto-registradas en wp_enqueue_scripts:
 * - roi_enqueue_anchor_vignette_scripts() - Script JS para Anchor/Vignette
 */

if (!defined('ABSPATH')) {
    exit;
}

use ROITheme\Shared\Infrastructure\Services\PageVisibilityHelper;
use ROITheme\Shared\Infrastructure\Services\UserVisibilityHelper;

/**
 * Renderiza un slot de anuncio en una ubicacion
 *
 * NOTA DIP: El renderer se obtiene del DIContainer, NO se instancia directamente.
 * Esto cumple con el Principio de Inversion de Dependencias.
 */
function roi_render_ad_slot(string $location): string
{
    global $container;

    if ($container === null) {
        return '';
    }

    try {
        $repository = $container->getComponentSettingsRepository();
        $settings = $repository->getComponentSettings('adsense-placement');

        if (empty($settings)) {
            return '';
        }

        // Verificar visibilidad por usuario logueado (Plan 99.16)
        if (!UserVisibilityHelper::shouldShowForUser($settings['visibility'] ?? [])) {
            return '';
        }

        // Verificar exclusiones legacy (forms group)
        if (roi_is_ad_excluded($settings)) {
            return '';
        }

        // Verificar exclusiones modernas (Plan 99.11: _exclusions, _page_visibility)
        if (!PageVisibilityHelper::shouldShow('adsense-placement')) {
            return '';
        }

        // Obtener renderer desde DIContainer (DIP compliant)
        $renderer = $container->getAdsensePlacementRenderer();

        return $renderer->renderSlot($settings, $location);

    } catch (\Throwable $e) {
        if (defined('WP_DEBUG') && WP_DEBUG) {
            error_log('ROI AdSense: ' . $e->getMessage());
        }
        return '';
    }
}

/**
 * Verifica si se deben ocultar anuncios para usuarios logueados
 *
 * @deprecated Plan 99.16: Usar UserVisibilityHelper::shouldShowForUser() en su lugar.
 *             Esta función se mantiene para compatibilidad hacia atrás.
 *
 * @param array $settings Configuración del componente
 * @return bool true si se debe ocultar, false si se debe mostrar
 */
function roi_should_hide_for_logged_in(array $settings): bool
{
    // Delegar a UserVisibilityHelper (Plan 99.16)
    return !UserVisibilityHelper::shouldShowForUser($settings['visibility'] ?? []);
}

/**
 * Verifica si el contenido actual esta excluido
 */
function roi_is_ad_excluded(array $settings): bool
{
    $forms = $settings['forms'] ?? [];

    // Excluir categorias
    $excludeCats = array_filter(array_map('trim', explode(',', $forms['exclude_categories'] ?? '')));
    if (!empty($excludeCats) && is_single()) {
        $postCats = wp_get_post_categories(get_the_ID());
        if (array_intersect($excludeCats, $postCats)) {
            return true;
        }
    }

    // Excluir tipos de post
    $excludeTypes = array_filter(array_map('trim', explode(',', $forms['exclude_post_types'] ?? '')));
    if (!empty($excludeTypes) && in_array(get_post_type(), $excludeTypes, true)) {
        return true;
    }

    // Excluir posts especificos
    $excludeIds = array_filter(array_map('trim', explode(',', $forms['exclude_post_ids'] ?? '')));
    if (!empty($excludeIds) && in_array((string)get_the_ID(), $excludeIds, true)) {
        return true;
    }

    return false;
}

/**
 * Renderiza los Rail Ads (margenes laterales del viewport)
 * Se llama desde wp_footer para inyectar al final del body
 *
 * NOTA DIP: El renderer se obtiene del DIContainer, NO se instancia directamente.
 */
function roi_render_rail_ads(): string
{
    global $container;

    if ($container === null) {
        return '';
    }

    try {
        $repository = $container->getComponentSettingsRepository();
        $settings = $repository->getComponentSettings('adsense-placement');

        if (empty($settings)) {
            return '';
        }

        // Verificar visibilidad por usuario logueado (Plan 99.16)
        if (!UserVisibilityHelper::shouldShowForUser($settings['visibility'] ?? [])) {
            return '';
        }

        // Verificar exclusiones legacy (forms group)
        if (roi_is_ad_excluded($settings)) {
            return '';
        }

        // Verificar exclusiones modernas (Plan 99.11: _exclusions, _page_visibility)
        if (!PageVisibilityHelper::shouldShow('adsense-placement')) {
            return '';
        }

        // Obtener renderer desde DIContainer (DIP compliant)
        $renderer = $container->getAdsensePlacementRenderer();

        return $renderer->renderRailAds($settings);

    } catch (\Throwable $e) {
        if (defined('WP_DEBUG') && WP_DEBUG) {
            error_log('ROI AdSense Rail Ads: ' . $e->getMessage());
        }
        return '';
    }
}

/**
 * Hook para inyectar Rail Ads en el footer
 */
add_action('wp_footer', function() {
    // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
    echo roi_render_rail_ads();
}, 50);

/**
 * Carga el script principal de AdSense
 */
function roi_enqueue_adsense_script(): void
{
    global $container;

    if ($container === null || is_admin()) {
        return;
    }

    try {
        $repository = $container->getComponentSettingsRepository();
        $settings = $repository->getComponentSettings('adsense-placement');

        if (!($settings['visibility']['is_enabled'] ?? false)) {
            return;
        }

        // Verificar visibilidad por usuario logueado (Plan 99.16)
        if (!UserVisibilityHelper::shouldShowForUser($settings['visibility'] ?? [])) {
            return;
        }

        // Verificar exclusiones modernas (Plan 99.11: _exclusions, _page_visibility)
        if (!PageVisibilityHelper::shouldShow('adsense-placement')) {
            return;
        }

        $publisherId = $settings['content']['publisher_id'] ?? '';
        if (empty($publisherId)) {
            return;
        }

        $delayEnabled = ($settings['forms']['delay_enabled'] ?? true) === true;

        if ($delayEnabled) {
            echo '<script type="text/plain" data-adsense-script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=' . esc_attr($publisherId) . '" crossorigin="anonymous"></script>' . "\n";
        } else {
            echo '<script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=' . esc_attr($publisherId) . '" crossorigin="anonymous"></script>' . "\n";
        }

    } catch (\Throwable $e) {
        if (defined('WP_DEBUG') && WP_DEBUG) {
            error_log('ROI AdSense: ' . $e->getMessage());
        }
    }
}
add_action('wp_head', 'roi_enqueue_adsense_script', 5);

/**
 * Registra el filtro the_content para inyectar anuncios
 */
// Prioridad 150 para ejecutar DESPUÉS de restrict-content-pro (100)
add_filter('the_content', 'roi_inject_content_ads', 150);

function roi_inject_content_ads(string $content): string
{
    global $container;

    // Solo en posts individuales
    if (!is_single() || !in_the_loop() || !is_main_query()) {
        return $content;
    }

    if ($container === null) {
        return $content;
    }

    try {
        $repository = $container->getComponentSettingsRepository();
        $settings = $repository->getComponentSettings('adsense-placement');

        if (empty($settings) || !($settings['visibility']['is_enabled'] ?? false)) {
            return $content;
        }

        // Verificar visibilidad por usuario logueado (Plan 99.16)
        if (!UserVisibilityHelper::shouldShowForUser($settings['visibility'] ?? [])) {
            return $content;
        }

        // Verificar exclusiones legacy (forms group)
        if (roi_is_ad_excluded($settings)) {
            return $content;
        }

        // Verificar exclusiones modernas (Plan 99.11: _exclusions, _page_visibility)
        if (!PageVisibilityHelper::shouldShow('adsense-placement')) {
            return $content;
        }

        $renderer = $container->getAdsensePlacementRenderer();

        // Inyectar anuncio al inicio (post-top)
        $postTopHtml = '';
        if ($settings['behavior']['post_top_enabled'] ?? false) {
            $postTopHtml = $renderer->renderSlot($settings, 'post-top');
        }

        // Inyectar anuncio al final (post-bottom)
        $postBottomHtml = '';
        if ($settings['behavior']['post_bottom_enabled'] ?? false) {
            $postBottomHtml = $renderer->renderSlot($settings, 'post-bottom');
        }

        // Inyectar anuncios dentro del contenido
        $injector = new \ROITheme\Public\AdsensePlacement\Infrastructure\Services\ContentAdInjector(
            $settings,
            $renderer
        );
        $content = $injector->inject($content);

        return $postTopHtml . $content . $postBottomHtml;

    } catch (\Throwable $e) {
        if (defined('WP_DEBUG') && WP_DEBUG) {
            error_log('ROI AdSense Content ERROR: ' . $e->getMessage());
        }
        return $content;
    }
}

/**
 * Carga el script de Google Analytics (GA4 o Universal Analytics)
 */
function roi_enqueue_analytics_script(): void
{
    global $container;

    if ($container === null || is_admin()) {
        return;
    }

    try {
        $repository = $container->getComponentSettingsRepository();
        $settings = $repository->getComponentSettings('adsense-placement');

        // Verificar si Analytics esta habilitado
        if (!($settings['analytics']['analytics_enabled'] ?? false)) {
            return;
        }

        $trackingId = trim($settings['analytics']['ga_tracking_id'] ?? '');
        if (empty($trackingId)) {
            return;
        }

        // Verificar si GA ya esta cargado por otro plugin
        if (roi_is_analytics_loaded()) {
            return;
        }

        $anonymizeIp = ($settings['analytics']['ga_anonymize_ip'] ?? true) === true;

        // Detectar tipo de ID (GA4 vs Universal Analytics)
        if (strpos($trackingId, 'G-') === 0) {
            roi_render_ga4_script($trackingId, $anonymizeIp);
        } elseif (strpos($trackingId, 'UA-') === 0) {
            roi_render_universal_analytics_script($trackingId, $anonymizeIp);
        }

    } catch (\Throwable $e) {
        if (defined('WP_DEBUG') && WP_DEBUG) {
            error_log('ROI Analytics: ' . $e->getMessage());
        }
    }
}
add_action('wp_head', 'roi_enqueue_analytics_script', 1);

/**
 * Verifica si Google Analytics ya esta cargado por otro plugin
 */
function roi_is_analytics_loaded(): bool
{
    // Verificar si MonsterInsights esta activo
    if (class_exists('MonsterInsights_Lite') || class_exists('MonsterInsights')) {
        return true;
    }

    // Verificar si Site Kit de Google esta activo
    if (class_exists('Google\Site_Kit\Plugin')) {
        return true;
    }

    return false;
}

/**
 * Renderiza script de Google Analytics 4 (DIFERIDO)
 *
 * Para mejorar Core Web Vitals (TBT), GA4 se carga:
 * 1. Después de 3 segundos de timeout, O
 * 2. Al primer scroll/click/touch del usuario
 *
 * Esto reduce ~59 KiB de JavaScript bloqueante.
 */
function roi_render_ga4_script(string $trackingId, bool $anonymizeIp): void
{
    $config = $anonymizeIp ? "{ 'anonymize_ip': true }" : '{}';
    $escapedTrackingId = esc_attr($trackingId);
    $escapedConfig = esc_js($trackingId);

    echo '<!-- Google Analytics 4 (ROI Theme - Deferred Loading) -->' . "\n";
    echo '<script>' . "\n";
    echo '(function(){' . "\n";
    echo '  var loaded=false;' . "\n";
    echo '  function loadGA4(){' . "\n";
    echo '    if(loaded)return;loaded=true;' . "\n";
    echo '    var s=document.createElement("script");' . "\n";
    echo '    s.src="https://www.googletagmanager.com/gtag/js?id=' . $escapedTrackingId . '";' . "\n";
    echo '    s.async=true;' . "\n";
    echo '    document.head.appendChild(s);' . "\n";
    echo '    window.dataLayer=window.dataLayer||[];' . "\n";
    echo '    function gtag(){dataLayer.push(arguments);}' . "\n";
    echo '    window.gtag=gtag;' . "\n";
    echo '    gtag("js",new Date());' . "\n";
    echo '    gtag("config","' . $escapedConfig . '",' . $config . ');' . "\n";
    echo '  }' . "\n";
    echo '  var t=setTimeout(loadGA4,3000);' . "\n";
    echo '  ["scroll","click","touchstart"].forEach(function(e){' . "\n";
    echo '    document.addEventListener(e,function(){clearTimeout(t);loadGA4();},{once:true,passive:true});' . "\n";
    echo '  });' . "\n";
    echo '})();' . "\n";
    echo '</script>' . "\n";
}

/**
 * Renderiza script de Universal Analytics (legacy - DIFERIDO)
 *
 * Carga diferida para mejorar Core Web Vitals.
 */
function roi_render_universal_analytics_script(string $trackingId, bool $anonymizeIp): void
{
    $anonymizeConfig = $anonymizeIp ? 'ga("set","anonymizeIp",true);' : '';
    $escapedTrackingId = esc_js($trackingId);

    echo '<!-- Universal Analytics (ROI Theme - Deferred) -->' . "\n";
    echo '<script>' . "\n";
    echo '(function(){' . "\n";
    echo '  var loaded=false;' . "\n";
    echo '  function loadUA(){' . "\n";
    echo '    if(loaded)return;loaded=true;' . "\n";
    echo '    (function(i,s,o,g,r,a,m){i["GoogleAnalyticsObject"]=r;i[r]=i[r]||function(){' . "\n";
    echo '    (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),' . "\n";
    echo '    m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)' . "\n";
    echo '    })(window,document,"script","https://www.google-analytics.com/analytics.js","ga");' . "\n";
    echo '    ga("create","' . $escapedTrackingId . '","auto");' . "\n";
    if (!empty($anonymizeConfig)) {
        echo '    ' . $anonymizeConfig . "\n";
    }
    echo '    ga("send","pageview");' . "\n";
    echo '  }' . "\n";
    echo '  var t=setTimeout(loadUA,3000);' . "\n";
    echo '  ["scroll","click","touchstart"].forEach(function(e){' . "\n";
    echo '    document.addEventListener(e,function(){clearTimeout(t);loadUA();},{once:true,passive:true});' . "\n";
    echo '  });' . "\n";
    echo '})();' . "\n";
    echo '</script>' . "\n";
}

/**
 * Renderiza Anchor Ads (anuncios fijos top/bottom)
 *
 * NOTA DIP: El renderer se obtiene del DIContainer, NO se instancia directamente.
 */
function roi_render_anchor_ads(): string
{
    global $container;

    if ($container === null) {
        return '';
    }

    try {
        $repository = $container->getComponentSettingsRepository();
        $settings = $repository->getComponentSettings('adsense-placement');

        if (empty($settings)) {
            return '';
        }

        // Verificar visibilidad por usuario logueado (Plan 99.16)
        if (!UserVisibilityHelper::shouldShowForUser($settings['visibility'] ?? [])) {
            return '';
        }

        // Verificar exclusiones legacy (forms group)
        if (roi_is_ad_excluded($settings)) {
            return '';
        }

        // Verificar exclusiones modernas (Plan 99.11: _exclusions, _page_visibility)
        if (!PageVisibilityHelper::shouldShow('adsense-placement')) {
            return '';
        }

        // Obtener renderer desde DIContainer (DIP compliant)
        $renderer = $container->getAdsensePlacementRenderer();

        return $renderer->renderAnchorAds($settings);

    } catch (\Throwable $e) {
        if (defined('WP_DEBUG') && WP_DEBUG) {
            error_log('ROI Anchor Ads: ' . $e->getMessage());
        }
        return '';
    }
}

/**
 * Renderiza Vignette Ad (pantalla completa)
 *
 * NOTA DIP: El renderer se obtiene del DIContainer, NO se instancia directamente.
 */
function roi_render_vignette_ad(): string
{
    global $container;

    if ($container === null) {
        return '';
    }

    try {
        $repository = $container->getComponentSettingsRepository();
        $settings = $repository->getComponentSettings('adsense-placement');

        if (empty($settings)) {
            return '';
        }

        // Verificar visibilidad por usuario logueado (Plan 99.16)
        if (!UserVisibilityHelper::shouldShowForUser($settings['visibility'] ?? [])) {
            return '';
        }

        // Verificar exclusiones legacy (forms group)
        if (roi_is_ad_excluded($settings)) {
            return '';
        }

        // Verificar exclusiones modernas (Plan 99.11: _exclusions, _page_visibility)
        if (!PageVisibilityHelper::shouldShow('adsense-placement')) {
            return '';
        }

        // Obtener renderer desde DIContainer (DIP compliant)
        $renderer = $container->getAdsensePlacementRenderer();

        return $renderer->renderVignetteAd($settings);

    } catch (\Throwable $e) {
        if (defined('WP_DEBUG') && WP_DEBUG) {
            error_log('ROI Vignette Ad: ' . $e->getMessage());
        }
        return '';
    }
}

/**
 * Hook para inyectar Anchor Ads en el footer
 */
add_action('wp_footer', function() {
    // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
    echo roi_render_anchor_ads();
}, 51);

/**
 * Hook para inyectar Vignette Ad en el footer
 */
add_action('wp_footer', function() {
    // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
    echo roi_render_vignette_ad();
}, 52);

/**
 * Encola el script JavaScript para Anchor y Vignette Ads
 */
function roi_enqueue_anchor_vignette_scripts(): void
{
    global $container;

    if ($container === null || is_admin()) {
        return;
    }

    try {
        $repository = $container->getComponentSettingsRepository();
        $settings = $repository->getComponentSettings('adsense-placement');

        if (!($settings['visibility']['is_enabled'] ?? false)) {
            return;
        }

        // Verificar si Anchor o Vignette estan habilitados
        $anchorEnabled = $settings['anchor_ads']['anchor_enabled'] ?? false;
        $vignetteEnabled = $settings['vignette_ads']['vignette_enabled'] ?? false;

        if (!$anchorEnabled && !$vignetteEnabled) {
            return;
        }

        // Verificar visibilidad por usuario logueado (Plan 99.16)
        if (!UserVisibilityHelper::shouldShowForUser($settings['visibility'] ?? [])) {
            return;
        }

        // Verificar exclusiones modernas (Plan 99.11: _exclusions, _page_visibility)
        if (!PageVisibilityHelper::shouldShow('adsense-placement')) {
            return;
        }

        // Encolar script
        wp_enqueue_script(
            'roi-anchor-vignette',
            get_template_directory_uri() . '/Public/AdsensePlacement/Infrastructure/Ui/Assets/anchor-vignette.js',
            [],
            '1.0.0',
            true // En footer
        );

    } catch (\Throwable $e) {
        if (defined('WP_DEBUG') && WP_DEBUG) {
            error_log('ROI Anchor/Vignette Scripts: ' . $e->getMessage());
        }
    }
}
add_action('wp_enqueue_scripts', 'roi_enqueue_anchor_vignette_scripts');