if (!empty($source['catalog']) && class_exists('TP_Sencor_Catalog')) { TP_Sencor_Catalog::enrich_product($product_id,$row); }
            if (self::is_sencor($source)) {
                $sale=(float)($row['sale_price']??0);
                $base=(float)($row['price']??0);
                if ($sale>0 && $base>0 && $sale<$base) { update_post_meta($product_id,'_tpdc_feed_sale_price',round($sale,2)); }
                else { delete_post_meta($product_id,'_tpdc_feed_sale_price'); }
            }
            $touched[$product_id]=true;
        }
        foreach (array_keys($touched) as $product_id) { self::refresh_product($product_id); }
        return 'Zdroj '.sanitize_key($source_id).': '.count($items).' nabídek, '.$new.' nových konceptů, '.$updated.' aktualizovaných, '.$ignored.' přeskočeno.';
    }
    private static function current_offers($product_id,$limit=10) {
        global $wpdb;$offers=self::offers_table();
        $cutoff=gmdate('Y-m-d H:i:s',time()-48*HOUR_IN_SECONDS);
        return $wpdb->get_results($wpdb->prepare("SELECT * FROM {$offers} WHERE product_id=%d AND available=1 AND currency='CZK' AND checked_at >= %s ORDER BY price ASC LIMIT %d",(int)$product_id,$cutoff,(int)$limit));
    }
    private static function refresh_product($product_id) {
        if (get_post_meta($product_id,'_tpdc_managed',true)!=='yes') { return; }
        $p=wc_get_product($product_id); if (!$p || !$p->is_type('external')) { return; }
        $best=self::current_offers($product_id,1);
        if ($best) {
            $regular=(float)$best[0]->price;
            $sale=(float)get_post_meta($product_id,'_tpdc_feed_sale_price',true);
            $p->set_regular_price((string)$regular);
            if ($sale>0 && $sale<$regular) { $p->set_sale_price((string)$sale);$p->set_price((string)$sale); }
            else { $p->set_sale_price('');$p->set_price((string)$regular); }
            $p->set_product_url($best[0]->offer_url);$p->set_stock_status('instock');
        }
        else { $p->set_stock_status('outofstock'); }
        $p->save();
    }

    public static function block_stale_purchase($purchasable, $product) {
        if ($product && get_post_meta($product->get_id(), '_tpdc_managed', true) === 'yes') {
            return $purchasable && (bool) self::current_offers($product->get_id(), 1);
        }
        return $purchasable;
    }
    public static function stale_price_html($html, $product) {
        if ($product && get_post_meta($product->get_id(), '_tpdc_managed', true) === 'yes' && !self::current_offers($product->get_id(), 1)) {
            return '<span class="tpdc-stale">Cena momentálně není ověřena</span>';
        }
        return $html;
    }
    public static function feed_product_image($image, $product, $size, $attr, $placeholder) {
        if (!$product || $product->get_image_id() || get_post_meta($product->get_id(), '_tpdc_managed', true) !== 'yes') { return $image; }
        $offers=self::current_offers($product->get_id(), 1);
        if (!$offers || !$offers[0]->image_url) { return $image; }
        $src=esc_url($offers[0]->image_url);
        if (!$src) { return $image; }
        return '<img loading="lazy" decoding="async" width="320" height="320" src="'.$src.'" alt="'.esc_attr($product->get_name()).'">';
    }
    public static function product_offers() {
        if (!function_exists('is_product') || !is_product()) { return; }
        global $product; if (!$product || get_post_meta($product->get_id(),'_tpdc_managed',true)!=='yes') { return; }
        echo self::render_offers($product->get_id());
    }
    private static function render_offers($product_id) {
        $offers=self::current_offers($product_id);
        if (!$offers) { return '<p>Aktuální dostupná nabídka zatím není ověřena.</p>'; }
        $html='<section class="tpdc-offers"><h2>'.(count($offers)>1?'Porovnání aktuálních nabídek':'Aktuální nabídka').'</h2><ul>';
        foreach ($offers as $offer) {
            $url=esc_url($offer->offer_url); if (!$url) { continue; }
            $time=wp_date('j. n. Y H:i',strtotime($offer->checked_at.' UTC'));
            $html.='<li><strong>'.esc_html($offer->merchant).'</strong> — <b>'.esc_html(number_format_i18n((float)$offer->price,0)).' Kč</b> <small>Aktualizováno '.esc_html($time).'</small> <a rel="sponsored nofollow noopener" target="_blank" href="'.$url.'">Zobrazit v obchodě →</a></li>';
        }
        return $html.'</ul><p><small>Jde o partnerské odkazy. Ceny mohou být v obchodě novější. Zkontrolujte je před nákupem.</small></p></section>';
    }
    public static function offers_shortcode($atts) {
        $a=shortcode_atts(['id'=>0],$atts,'tp_nabidky');$id=absint($a['id']);
        if (!$id && function_exists('is_product') && is_product()) { $id=get_the_ID(); }
        return $id?self::render_offers($id):'';
    }
    public static function selected_shortcode($atts) {
        if (!class_exists('WooCommerce')) { return ''; }
        $a=shortcode_atts(['pocet'=>6],$atts,'tp_vyber');$limit=min(24,max(1,absint($a['pocet'])));
        $query=new WP_Query(['post_type'=>'product','post_status'=>'publish','posts_per_page'=>min(100,$limit*4),'meta_query'=>[['key'=>'_tpdc_managed','value'=>'yes']]]);
        if (!$query->have_posts()) { return '<p>Ověřené produkty připravujeme. Nechceme zobrazovat neaktuální nabídky.</p>'; }
        $html='<div class="tpdc-grid">';$shown=0;
        foreach ($query->posts as $post) {
            $list=self::current_offers($post->ID,1);if (!$list) { continue; }
            $p=wc_get_product($post->ID); if (!$p) { continue; }
            $image=$p->get_image('woocommerce_thumbnail');
            $shown++;$html.='<article class="tpdc-card"><a href="'.esc_url(get_permalink($post->ID)).'">'.$image.'<h3>'.esc_html($p->get_name()).'</h3></a><p>Od <strong>'.esc_html(number_format_i18n((float)$list[0]->price,0)).' Kč</strong></p><a class="tpdc-button" href="'.esc_url(get_permalink($post->ID)).'">Detail a nabídky</a></article>';
            if ($shown >= $limit) { break; }
        }
        wp_reset_postdata();return $html.'</div><style>.tpdc-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:18px}.tpdc-card{border:1px solid #e4e9f0;padding:18px;border-radius:16px;background:#fff}.tpdc-card h3{font-size:17px;line-height:1.35}.tpdc-button{display:inline-block;padding:9px 14px;border-radius:9px;background:#155e88;color:#fff!important}.tpdc-offers li{margin:12px 0}.tpdc-offers small{display:inline-block;margin:0 10px;color:#677}</style>';
    }
    public static function history_shortcode($atts) {
        $a=shortcode_atts(['id'=>0],$atts,'tp_historie');$id=absint($a['id'])?:get_the_ID();
        if (!$id) { return ''; }
        global $wpdb;$o=self::offers_table();$p=self::prices_table();
        $rows=$wpdb->get_row($wpdb->prepare("SELECT MIN(p.price) lo, MAX(p.price) hi, COUNT(*) num, MIN(p.observed_at) since FROM {$p} p INNER JOIN {$o} o ON o.id=p.offer_id WHERE o.product_id=%d AND p.observed_at >= %s",$id,gmdate('Y-m-d H:i:s',time()-30*DAY_IN_SECONDS)));
        if (!$rows || (int)$rows->num<2) { return '<p>Historii cen teprve sbíráme. Zatím nemáme dost údajů.</p>'; }
        return '<p>Za posledních 30 dní ze zaznamenaných nabídek: minimum <b>'.esc_html(number_format_i18n($rows->lo,0)).' Kč</b>, maximum <b>'.esc_html(number_format_i18n($rows->hi,0)).' Kč</b>. <small>Historie je úplná až po 30 dnech sběru.</small></p>';
    }
}
register_activation_hook(__FILE__,['TP_Data_Core','activate']);
register_deactivation_hook(__FILE__,['TP_Data_Core','deactivate']);
require_once __DIR__ . '/includes/sencor-catalog.php';
require_once __DIR__ . '/includes/sencor-gallery.php';
require_once __DIR__ . '/includes/fast-gallery.php';
require_once __DIR__ . '/includes/sencor-publish.php';
require_once __DIR__ . '/includes/admin-overview.php';
require_once __DIR__ . '/includes/dognet-tesla.php';
add_action('plugins_loaded',['TP_Data_Core','boot']);
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