feat(search): cache and expose last search parameters for replay and context retrieval

- Add methods to save and retrieve last search parameters in SearchChain
- Persist search params alongside results for replayable search context
- Add /last/context endpoint to fetch last search results and parameters
- Update tests to cover search param caching logic
- Allow images.tmdb.org in SECURITY_IMAGE_DOMAINS

app/api/endpoints/search.py

@@ -144,6 +144,23 @@ async def search_latest(_: schemas.TokenPayload = Depends(verify_token)) -> Any:
     return [torrent.to_dict() for torrent in torrents]
 
 
+@router.get("/last/context", summary="查询上次搜索上下文", response_model=schemas.Response)
+async def search_latest_context(_: schemas.TokenPayload = Depends(verify_token)) -> Any:
+    """
+    查询上次搜索结果及其对应的搜索参数。
+    """
+    search_chain = SearchChain()
+    torrents = await search_chain.async_last_search_results() or []
+    params = await search_chain.async_last_search_params() or {}
+    return schemas.Response(
+        success=True,
+        data={
+            "params": params,
+            "results": [torrent.to_dict() for torrent in torrents],
+        },
+    )
+
+
 @router.get("/media/{mediaid}/stream", summary="渐进式精确搜索资源")
 async def search_by_id_stream(
     request: Request,

app/chain/search.py

@@ -33,6 +33,7 @@ class SearchChain(ChainBase):
     """
 
     __result_temp_file = "__search_result__"
+    __search_params_temp_file = "__search_params__"
     __ai_indices_cache_file = "__ai_recommend_indices__"
 
     _ai_recommend_running = False
@@ -121,6 +122,115 @@ class SearchChain(ChainBase):
         state._ai_recommend_error = None
         self.remove_cache(self.__ai_indices_cache_file)
 
+    @staticmethod
+    def _build_search_keyword(
+            tmdbid: Optional[int] = None, doubanid: Optional[str] = None
+    ) -> str:
+        """
+        根据媒体ID生成可重放的搜索关键字。
+        """
+        if tmdbid is not None:
+            return f"tmdb:{tmdbid}"
+        if doubanid:
+            return f"douban:{doubanid}"
+        return ""
+
+    @staticmethod
+    def _stringify_sites(sites: Optional[List[int]]) -> str:
+        """
+        将站点ID列表转换为前端可直接复用的查询字符串。
+        """
+        return ",".join(str(site) for site in sites) if sites else ""
+
+    @staticmethod
+    def _normalize_search_params(params: Optional[Dict[str, Any]]) -> Optional[Dict[str, str]]:
+        """
+        规范化上次搜索参数，供前端结果页重新搜索使用。
+        """
+        if not isinstance(params, dict):
+            return None
+
+        normalized = {
+            "keyword": str(params.get("keyword") or ""),
+            "type": str(params.get("type") or ""),
+            "area": str(params.get("area") or ""),
+            "title": str(params.get("title") or ""),
+            "year": str(params.get("year") or ""),
+            "season": str(params.get("season") or ""),
+            "sites": str(params.get("sites") or ""),
+        }
+        return normalized if normalized["keyword"] else None
+
+    def save_last_search_params(
+            self,
+            *,
+            keyword: Optional[str],
+            mtype: Optional[MediaType] = None,
+            area: Optional[str] = "title",
+            title: Optional[str] = None,
+            year: Optional[str] = None,
+            season: Optional[int] = None,
+            sites: Optional[List[int]] = None,
+    ) -> None:
+        """
+        保存最后一次资源搜索参数。
+        """
+        params = self._normalize_search_params(
+            {
+                "keyword": keyword,
+                "type": mtype.value if isinstance(mtype, MediaType) else mtype,
+                "area": area,
+                "title": title,
+                "year": year,
+                "season": season,
+                "sites": self._stringify_sites(sites),
+            }
+        )
+        if params:
+            self.save_cache(params, self.__search_params_temp_file)
+
+    async def async_save_last_search_params(
+            self,
+            *,
+            keyword: Optional[str],
+            mtype: Optional[MediaType] = None,
+            area: Optional[str] = "title",
+            title: Optional[str] = None,
+            year: Optional[str] = None,
+            season: Optional[int] = None,
+            sites: Optional[List[int]] = None,
+    ) -> None:
+        """
+        异步保存最后一次资源搜索参数。
+        """
+        params = self._normalize_search_params(
+            {
+                "keyword": keyword,
+                "type": mtype.value if isinstance(mtype, MediaType) else mtype,
+                "area": area,
+                "title": title,
+                "year": year,
+                "season": season,
+                "sites": self._stringify_sites(sites),
+            }
+        )
+        if params:
+            await self.async_save_cache(params, self.__search_params_temp_file)
+
+    def last_search_params(self) -> Optional[Dict[str, str]]:
+        """
+        获取上次搜索使用的参数。
+        """
+        return self._normalize_search_params(self.load_cache(self.__search_params_temp_file))
+
+    async def async_last_search_params(self) -> Optional[Dict[str, str]]:
+        """
+        异步获取上次搜索使用的参数。
+        """
+        return self._normalize_search_params(
+            await self.async_load_cache(self.__search_params_temp_file)
+        )
+
     @staticmethod
     def _normalize_ai_indices(ai_indices: List[Any]) -> List[int]:
         """
@@ -337,6 +447,13 @@ class SearchChain(ChainBase):
         """
         if cache_local:
             self.cancel_ai_recommend()
+            self.save_last_search_params(
+                keyword=self._build_search_keyword(tmdbid=tmdbid, doubanid=doubanid),
+                mtype=mtype,
+                area=area,
+                season=season,
+                sites=sites,
+            )
         mediainfo = self.recognize_media(tmdbid=tmdbid, doubanid=doubanid, mtype=mtype)
         if not mediainfo:
             logger.error(f'{tmdbid} 媒体信息识别失败！')
@@ -365,6 +482,11 @@ class SearchChain(ChainBase):
         """
         if cache_local:
             self.cancel_ai_recommend()
+            self.save_last_search_params(
+                keyword=title,
+                area="title",
+                sites=sites,
+            )
         if title:
             logger.info(f'开始搜索资源，关键词：{title} ...')
         else:
@@ -414,6 +536,13 @@ class SearchChain(ChainBase):
         """
         if cache_local:
             self.cancel_ai_recommend()
+            await self.async_save_last_search_params(
+                keyword=self._build_search_keyword(tmdbid=tmdbid, doubanid=doubanid),
+                mtype=mtype,
+                area=area,
+                season=season,
+                sites=sites,
+            )
         mediainfo = await self.async_recognize_media(tmdbid=tmdbid, doubanid=doubanid, mtype=mtype)
         if not mediainfo:
             logger.error(f'{tmdbid} 媒体信息识别失败！')
@@ -442,6 +571,11 @@ class SearchChain(ChainBase):
         """
         if cache_local:
             self.cancel_ai_recommend()
+            await self.async_save_last_search_params(
+                keyword=title,
+                area="title",
+                sites=sites,
+            )
         if title:
             logger.info(f'开始搜索资源，关键词：{title} ...')
         else:
@@ -472,6 +606,11 @@ class SearchChain(ChainBase):
         """
         if cache_local:
             self.cancel_ai_recommend()
+            await self.async_save_last_search_params(
+                keyword=title,
+                area="title",
+                sites=sites,
+            )
         if title:
             logger.info(f'开始渐进式搜索资源，关键词：{title} ...')
         else:
@@ -518,6 +657,13 @@ class SearchChain(ChainBase):
         """
         if cache_local:
             self.cancel_ai_recommend()
+            await self.async_save_last_search_params(
+                keyword=self._build_search_keyword(tmdbid=tmdbid, doubanid=doubanid),
+                mtype=mtype,
+                area=area,
+                season=season,
+                sites=sites,
+            )
         mediainfo = await self.async_recognize_media(tmdbid=tmdbid, doubanid=doubanid, mtype=mtype)
         if not mediainfo:
             logger.error(f'{tmdbid} 媒体信息识别失败！')

app/core/config.py

@@ -486,6 +486,7 @@ class ConfigModel(BaseModel):
     SECURITY_IMAGE_DOMAINS: list = Field(
         default=[
             "image.tmdb.org",
+            "images.tmdb.org",
             "static-mdb.v.geilijiasu.com",
             "bing.com",
             "doubanio.com",