/* ----------------------------- Send once: media + caption (title + first paragraph + link) ----------------------------- */
if (!function_exists('ptm_eitaa_send_post')) {
    function ptm_eitaa_send_post($post, $is_new) {
        $token = ptm_eitaa_get('ptm_eitaa_token');
        $chat  = eitaa_normalize_chat_id( ptm_eitaa_pick_chat_id('ptm_eitaa_channel','ptm_eitaa_channel_url') );
        $gw    = rtrim(ptm_eitaa_get('ptm_eitaa_gateway'), '/');

        if (empty($token) || empty($chat)) {
            ptm_eitaa_log(array('phase'=>'auto','ok'=>false,'error'=>'missing_token_or_chat','post_id'=>$post->ID));
            return;
        }

        $caption = ptm_eitaa_build_caption($post, $is_new);
        $media   = ptm_eitaa_find_media($post);

        // اگر رسانه موجود است: فقط یک پیام رسانه با کپشن کوتاه
        if ($media && !empty($media['url'])) {
            $url  = ptm_eitaa_abs_url($media['url']);
            $kind = (strtolower($media['type']) === 'video') ? 'video' : 'photo';

            // 1) تلاش با URL مستقیم
            $endpoint = "{$gw}/{$token}/send" . ucfirst($kind);
            $req = curl_init($endpoint);
            curl_setopt_array($req, array(
                CURLOPT_POST           => true,
                CURLOPT_POSTFIELDS     => array('chat_id'=>$chat, $kind=>$url, 'caption'=>$caption),
                CURLOPT_RETURNTRANSFER => true,
                CURLOPT_CONNECTTIMEOUT => 20,
                CURLOPT_TIMEOUT        => 45,
            ));
            $resp      = curl_exec($req);
            $http_code = curl_getinfo($req, CURLINFO_HTTP_CODE);
            curl_close($req);

            $ok = (strpos((string)$resp,'"ok":true') !== false);
            ptm_eitaa_log(array(
                'phase'=>'auto_url_media','action'=>$is_new?'new':'update',
                'api'=>basename($endpoint),'http_code'=>$http_code,'api_ok'=>$ok,
                'chat_id'=>$chat,'post_id'=>$post->ID,'media_type'=>$media['type'],'media_url'=>$url
            ));

            if ($ok) return;

            // 2) اگر URL جواب نداد، فایل واقعی
            $file_path = $url;
            ptm_eitaa_prepare_file($file_path);
            if (file_exists($file_path)) {
                $endpoint2 = "{$gw}/{$token}/send" . ucfirst($kind);
                $req2 = curl_init($endpoint2);
                curl_setopt_array($req2, array(
                    CURLOPT_POST           => true,
                    CURLOPT_POSTFIELDS     => array(
                        'chat_id' => $chat,
                        $kind     => new CurlFile($file_path, null, basename($file_path)),
                        'caption' => $caption,
                    ),
                    CURLOPT_RETURNTRANSFER => true,
                    CURLOPT_CONNECTTIMEOUT => 25,
                    CURLOPT_TIMEOUT        => 60,
                ));
                $resp2 = curl_exec($req2);
                $code2 = curl_getinfo($req2, CURLINFO_HTTP_CODE);
                curl_close($req2);

                $ok2 = (strpos((string)$resp2,'"ok":true') !== false);
                ptm_eitaa_log(array(
                    'phase'=>'auto_file_media','http_code'=>$code2,'api_ok'=>$ok2,
                    'chat_id'=>$chat,'post_id'=>$post->ID,'file_path'=>$file_path
                ));

                if ($ok2) return;

                // 3) آخرین شانس: Document (sendFile) با همان کپشن
                $ep3 = "{$gw}/{$token}/sendFile";
                $req3 = curl_init($ep3);
                curl_setopt_array($req3, array(
                    CURLOPT_POST           => true,
                    CURLOPT_POSTFIELDS     => array(
                        'chat_id' => $chat,
                        'file'    => new CurlFile($file_path, null, basename($file_path)),
                        'caption' => $caption,
                    ),
                    CURLOPT_RETURNTRANSFER => true,
                    CURLOPT_CONNECTTIMEOUT => 25,
                    CURLOPT_TIMEOUT        => 60,
                ));
                $resp3 = curl_exec($req3);
                $code3 = curl_getinfo($req3, CURLINFO_HTTP_CODE);
                curl_close($req3);

                $ok3 = (strpos((string)$resp3,'"ok":true') !== false);
                ptm_eitaa_log(array('phase'=>'auto_doc_media','http_code'=>$code3,'api_ok'=>$ok3,'post_id'=>$post->ID));
                if ($ok3) return;
            }

            // اگر همهٔ حالت‌های رسانه شکست خورد → یک پیام متنی واحد
            $req4 = curl_init("{$gw}/{$token}/sendMessage");
            curl_setopt_array($req4, array(
                CURLOPT_POST           => true,
                CURLOPT_POSTFIELDS     => array('chat_id'=>$chat, 'text'=>$caption),
                CURLOPT_RETURNTRANSFER => true,
                CURLOPT_CONNECTTIMEOUT => 15,
                CURLOPT_TIMEOUT        => 30,
            ));
            $resp4 = curl_exec($req4);
            $code4 = curl_getinfo($req4, CURLINFO_HTTP_CODE);
            curl_close($req4);
            $ok4 = (strpos((string)$resp4,'"ok":true') !== false);
            ptm_eitaa_log(array('phase'=>'auto_fallback_text','http_code'=>$code4,'api_ok'=>$ok4,'post_id'=>$post->ID));
            return;
        }

        // بدون رسانه: تنها یک پیام متنی (تیتر + پاراگراف اول + لینک)
        $req = curl_init("{$gw}/{$token}/sendMessage");
        curl_setopt_array($req, array(
            CURLOPT_POST           => true,
            CURLOPT_POSTFIELDS     => array('chat_id'=>$chat, 'text'=>$caption),
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_CONNECTTIMEOUT => 15,
            CURLOPT_TIMEOUT        => 30,
        ));
        $resp = curl_exec($req);
        $http = curl_getinfo($req, CURLINFO_HTTP_CODE);
        curl_close($req);
        $ok = (strpos((string)$resp,'"ok":true') !== false);
        ptm_eitaa_log(array('phase'=>'auto_text_only','http_code'=>$http,'api_ok'=>$ok,'post_id'=>$post->ID));
    }
}