🐞 fix: 增加错误之后对已解析段落的缓存功能,再次重试时不再重头开始

解析长视频时,当附件大小过大时不再调用后进行报错,而是将附件进行分批次发送

在每篇笔记开头默认增加地址来源链接,对模糊处可溯源

backend/app/utils/note_helper.py

@@ -5,6 +5,37 @@ import re
 
 import re
 
+
+def prepend_source_link(markdown: str | None, source_url: str) -> str | None:
+    """
+    在笔记开头添加来源链接；若首个非空行已包含来源链接，则更新该行并避免重复。
+    """
+    if markdown is None:
+        return None
+
+    source = (source_url or "").strip()
+    if not source:
+        return markdown
+
+    header = f"> 来源链接：{source}"
+    lines = markdown.splitlines()
+    first_non_empty_idx = None
+    for idx, line in enumerate(lines):
+        if line.strip():
+            first_non_empty_idx = idx
+            break
+
+    if first_non_empty_idx is not None:
+        first_line = lines[first_non_empty_idx].strip()
+        if first_line.startswith("> 来源链接：") or first_line.startswith("来源链接："):
+            lines[first_non_empty_idx] = header
+            return "\n".join(lines)
+
+    if markdown.strip():
+        return f"{header}\n\n{markdown}"
+    return header
+
+
 def replace_content_markers(markdown: str, video_id: str, platform: str = 'bilibili') -> str:
     """
     替换 *Content-04:16*、Content-04:16 或 Content-[04:16] 为超链接，跳转到对应平台视频的时间位置
@@ -12,18 +43,20 @@ def replace_content_markers(markdown: str, video_id: str, platform: str = 'bilib
     # 匹配三种形式：*Content-04:16*、Content-04:16、Content-[04:16]
     pattern = r"(?:\*?)Content-(?:\[(\d{2}):(\d{2})\]|(\d{2}):(\d{2}))"
 
+    safe_video_id = video_id
+
     def replacer(match):
         mm = match.group(1) or match.group(3)
         ss = match.group(2) or match.group(4)
         total_seconds = int(mm) * 60 + int(ss)
 
         if platform == 'bilibili':
-            video_id = video_id.replace("_p", "?p=")
-            url = f"https://www.bilibili.com/video/{video_id}&t={total_seconds}"
+            parsed_video_id = safe_video_id.replace("_p", "?p=")
+            url = f"https://www.bilibili.com/video/{parsed_video_id}&t={total_seconds}"
         elif platform == 'youtube':
-            url = f"https://www.youtube.com/watch?v={video_id}&t={total_seconds}s"
+            url = f"https://www.youtube.com/watch?v={safe_video_id}&t={total_seconds}s"
         elif platform == 'douyin':
-            url = f"https://www.douyin.com/video/{video_id}"
+            url = f"https://www.douyin.com/video/{safe_video_id}"
             return f"[原片 @ {mm}:{ss}]({url})"
         else:
             return f"({mm}:{ss})"