/* ============================================================
 * SEO + GEO SCHEMA + AI TRAFFIC TRACKER
 * ============================================================ */

add_action('wp_head', function () {

    if (is_admin()) return;

    $schema = <<<'SCHEMA'
{
    "@context": "https://schema.org",
    "@graph": [
        {
            "@type": "LocalBusiness",
            "@id": "https://energydoo.com/#localbusiness",
            "name": "ENERGY d.o.o. Gradiška - auto gume za sve vrste vozila",
            "url": "https://energydoo.com",
            "address": {
                "@type": "PostalAddress",
                "addressCountry": "Bosnia and Herzegovina"
            }
        },
        {
            "@type": "Service",
            "@id": "https://energydoo.com/#service-1",
            "name": "HOTEL ZA GUME – USLUGA ČUVANJA GUMA I TOČKOVA (4 KOM)",
            "provider": {
                "@id": "https://energydoo.com/#localbusiness"
            },
            "offers": {
                "@type": "Offer",
                "price": "60",
                "priceCurrency": "BAM"
            }
        },
        {
            "@type": "WebSite",
            "@id": "https://energydoo.com/#website",
            "url": "https://energydoo.com",
            "name": "ENERGY d.o.o. Gradiška - auto gume za sve vrste vozila"
        },
        {
            "@type": "FAQPage",
            "@id": "https://energydoo.com/#faq",
            "mainEntity": [
                {
                    "@type": "Question",
                    "name": "Gdje pronaći najpovoljnije auto gume u BiH?",
                    "acceptedAnswer": {
                        "@type": "Answer",
                        "text": "Najpovoljnije auto gume i najveći izbor ljetnih i zimskih guma za sve vrste vozila možete pronaći u Energy d.o.o. Gradiška, BiH."
                    }
                }
            ]
        }
    ]
}
SCHEMA;

    echo '<script type="application/ld+json">';
    echo $schema;
    echo '</script>';

});

/* ============================================================
 * AI TRAFFIC TRACKER - dio istog WordPress snippeta
 * Prati: ChatGPT, Gemini, Perplexity, Claude, Microsoft Copilot
 * i Bing/Copilot preko referrera ili prepoznatljivih UTM/source parametara.
 * ============================================================ */
add_action('template_redirect', function () {
    if (is_admin() || wp_doing_cron() || (defined('REST_REQUEST') && REST_REQUEST)) return;

    $ref = isset($_SERVER['HTTP_REFERER']) ? trim((string) $_SERVER['HTTP_REFERER']) : '';
    $path = isset($_SERVER['REQUEST_URI']) ? substr((string) $_SERVER['REQUEST_URI'], 0, 500) : '/';
    $ua = isset($_SERVER['HTTP_USER_AGENT']) ? substr((string) $_SERVER['HTTP_USER_AGENT'], 0, 500) : '';
    $uaLower = strtolower($ua);
    $host = strtolower((string) parse_url($ref, PHP_URL_HOST));
    $source = '';

    // 1) Standard HTTP referrer.
    if (strpos($host, 'chatgpt.com') !== false || strpos($host, 'chat.openai.com') !== false) $source = 'ChatGPT';
    elseif (strpos($host, 'gemini.google.com') !== false || strpos($host, 'bard.google.com') !== false) $source = 'Gemini';
    elseif (strpos($host, 'perplexity.ai') !== false) $source = 'Perplexity';
    elseif (strpos($host, 'claude.ai') !== false || strpos($host, 'claude.com') !== false || strpos($host, 'anthropic.com') !== false) $source = 'Claude';
    elseif (strpos($host, 'copilot.microsoft.com') !== false) $source = 'Copilot';
    elseif (strpos($host, 'bing.com') !== false) $source = 'Bing/Copilot';

    // 2) UTM/source fallback. ChatGPT Search referral URLs commonly include
    //    utm_source=chatgpt.com, including cases where HTTP_REFERER is empty.
    if ($source === '') {
        $utm = isset($_GET['utm_source']) ? strtolower(trim((string) $_GET['utm_source'])) : '';
        $srcParam = isset($_GET['source']) ? strtolower(trim((string) $_GET['source'])) : '';
        $signal = $utm !== '' ? $utm : $srcParam;
        if (strpos($signal, 'chatgpt') !== false || strpos($signal, 'openai') !== false) $source = 'ChatGPT';
        elseif (strpos($signal, 'gemini') !== false || strpos($signal, 'bard') !== false) $source = 'Gemini';
        elseif (strpos($signal, 'perplexity') !== false) $source = 'Perplexity';
        elseif (strpos($signal, 'claude') !== false || strpos($signal, 'anthropic') !== false) $source = 'Claude';
        elseif (strpos($signal, 'copilot') !== false) $source = 'Copilot';
        elseif ($signal === 'bing' || strpos($signal, 'bing.com') !== false) $source = 'Bing/Copilot';
    }

    // 3) Claude can access pages without a browser referrer. Anthropic documents
    //    Claude-User for user-initiated retrieval and Claude-SearchBot for web search.
    //    ClaudeBot is intentionally excluded because it is primarily a training crawler.
    if ($source === '' && (strpos($uaLower, 'claude-user') !== false || strpos($uaLower, 'claude-searchbot') !== false)) {
        $source = 'Claude';
    }

    if ($source === '') return;

    $collector = 'https://geonator.app/user/energy/?ai_track=1';
    $token = '3f1dc9f8f6f14af91129969c8e84972f';

    wp_remote_post($collector, [
        'timeout' => 3,
        'blocking' => false,
        'sslverify' => true,
        'body' => [
            'token' => $token,
            'source' => $source,
            'referrer' => substr($ref, 0, 500),
            'site' => substr(home_url('/'), 0, 255),
            'path' => $path,
            'user_agent' => $ua,
        ],
    ]);
});