From 6f76c483ec415c8e187ba5fff3d55a45ef6f6507 Mon Sep 17 00:00:00 2001
From: wyn <1074145239@qq.com>
Date: Thu, 21 May 2026 14:14:34 +0800
Subject: [PATCH] =?UTF-8?q?=E8=BF=98=E4=B8=8D=E9=94=99=EF=BC=8C=E6=8C=BA?=
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---
 application/common/ReferenceCheckService.php | 75 ++++++++++++++++++--
 1 file changed, 68 insertions(+), 7 deletions(-)

diff --git a/application/common/ReferenceCheckService.php b/application/common/ReferenceCheckService.php
index 27ff9d8c..be13d089 100644
--- a/application/common/ReferenceCheckService.php
+++ b/application/common/ReferenceCheckService.php
@@ -193,7 +193,7 @@ class ReferenceCheckService
                         'created_at'      => $now,
                         'updated_at'      => $now,
                     ]);
-                    continue;
+
                     $this->pushJob(intval($checkId), $delay);
                     $checkIds[] = $checkId;
                     $queued++;
@@ -682,13 +682,13 @@ class ReferenceCheckService
      */
     private function extractLocalCitationContext($content, $tagStart, $tagEnd, array $tagSpans)
     {
-        $sentenceStart = $this->findSentenceStart($content, $tagStart);
+        $paragraphStart = $this->findParagraphStart($content, $tagStart);
         $sentenceEnd = $this->findSentenceEnd($content, $tagEnd, $tagEnd);
 
-        $prevTagEnd = $sentenceStart;
+        $prevTagEnd = $paragraphStart;
         $nextTagStart = $sentenceEnd;
         foreach ($tagSpans as $span) {
-            if ($span['end'] <= $tagStart && $span['end'] > $prevTagEnd && $span['end'] >= $sentenceStart) {
+            if ($span['end'] <= $tagStart && $span['end'] > $prevTagEnd) {
                 $prevTagEnd = $span['end'];
             }
             if ($span['start'] > $tagEnd && $span['start'] < $nextTagStart) {
@@ -696,9 +696,13 @@ class ReferenceCheckService
             }
         }
 
-        $hasPriorCiteInSentence = ($prevTagEnd > $sentenceStart);
-        // 同句后续引用：从上一 <blue> 标签后开始；首个引用：从整句开头到本标签前
-        $localStart = $hasPriorCiteInSentence ? $prevTagEnd : $sentenceStart;
+        $hasPriorCiteInParagraph = ($prevTagEnd > $paragraphStart);
+        // 同段后续引用：从上一 <blue> 后开始；段内首个引用：从段落开头到本标签前（非仅最后一句）
+        if ($hasPriorCiteInParagraph) {
+            $localStart = $prevTagEnd;
+        } else {
+            $localStart = $this->capContextStartBeforeTag($content, $tagStart, $paragraphStart);
+        }
 
         // 默认：引用标签前的论述（如 Yin et al. [13] → 含 “higher than … Yin et al.”）
         $localEnd = $tagStart;
@@ -894,6 +898,63 @@ class ReferenceCheckService
         return true;
     }
 
+    /**
+     * 段落起始（HTML / 换行），避免英文多句段落只取到最后一个句号后的一句
+     */
+    private function findParagraphStart($content, $tagStart)
+    {
+        $search = substr($content, 0, max(0, $tagStart));
+        if ($search === '') {
+            return 0;
+        }
+
+        $best = 0;
+
+        if (preg_match_all('/<p[^>]*>/i', $search, $m, PREG_OFFSET_CAPTURE)) {
+            $last = end($m[0]);
+            $best = max($best, $last[1] + strlen($last[0]));
+        }
+        if (preg_match_all('/<\/p>\s*/i', $search, $m, PREG_OFFSET_CAPTURE)) {
+            $last = end($m[0]);
+            $best = max($best, $last[1] + strlen($last[0]));
+        }
+        if (preg_match_all('/<br\s*\/?>\s*/i', $search, $m, PREG_OFFSET_CAPTURE)) {
+            $last = end($m[0]);
+            $best = max($best, $last[1] + strlen($last[0]));
+        }
+
+        $pos = strrpos($search, "\n\n");
+        if ($pos !== false) {
+            $best = max($best, $pos + 2);
+        }
+        $pos = strrpos($search, "\n");
+        if ($pos !== false) {
+            $best = max($best, $pos + 1);
+        }
+
+        return $best;
+    }
+
+    /**
+     * 段落过长时从引用处向前截取上限，避免单次 LLM 上下文过大
+     */
+    private function capContextStartBeforeTag($content, $tagStart, $paragraphStart, $maxBytes = 2500)
+    {
+        if ($tagStart - $paragraphStart <= $maxBytes) {
+            return $paragraphStart;
+        }
+
+        $start = $tagStart - $maxBytes;
+        $slice = substr($content, $start, $tagStart - $start);
+        if (preg_match('/[.!?。！？]\s+/u', $slice, $m, PREG_OFFSET_CAPTURE)) {
+            $last = end($m[0]);
+            $rel = $last[1] + strlen($last[0]);
+            return $start + $rel;
+        }
+
+        return max($paragraphStart, $start);
+    }
+
     private function findSentenceStart($content, $position)
     {
         $start = 0;