feat: Add SearchPersonTool for agent

Co-authored-by: jxxghp <jxxghp@qq.com>

app/agent/tools/impl/search_person.py

@@ -0,0 +1,83 @@
+"""搜索人物工具"""
+
+import json
+from typing import Optional, Type
+
+from pydantic import BaseModel, Field
+
+from app.agent.tools.base import MoviePilotTool
+from app.chain.media import MediaChain
+from app.log import logger
+
+
+class SearchPersonInput(BaseModel):
+    """搜索人物工具的输入参数模型"""
+    explanation: str = Field(..., description="Clear explanation of why this tool is being used in the current context")
+    name: str = Field(..., description="The name of the person to search for (e.g., 'Tom Hanks', '周杰伦')")
+
+
+class SearchPersonTool(MoviePilotTool):
+    name: str = "search_person"
+    description: str = "Search for person information including actors, directors, etc. Supports searching by name. Returns detailed person information from TMDB, Douban, or Bangumi database."
+    args_schema: Type[BaseModel] = SearchPersonInput
+
+    def get_tool_message(self, **kwargs) -> Optional[str]:
+        """根据搜索参数生成友好的提示消息"""
+        name = kwargs.get("name", "")
+        return f"正在搜索人物: {name}"
+
+    async def run(self, name: str, **kwargs) -> str:
+        logger.info(f"执行工具: {self.name}, 参数: name={name}")
+
+        try:
+            media_chain = MediaChain()
+            # 使用 MediaChain.async_search_persons 方法搜索人物
+            persons = await media_chain.async_search_persons(name=name)
+
+            if persons:
+                # 限制最多30条结果
+                total_count = len(persons)
+                limited_persons = persons[:30]
+                # 精简字段，只保留关键信息
+                simplified_results = []
+                for person in limited_persons:
+                    simplified = {
+                        "name": person.name,
+                        "id": person.id,
+                        "source": person.source,
+                        "profile_path": person.profile_path,
+                        "original_name": person.original_name,
+                        "known_for_department": person.known_for_department,
+                        "popularity": person.popularity,
+                        "biography": person.biography[:200] + "..." if person.biography and len(person.biography) > 200 else person.biography,
+                        "birthday": person.birthday,
+                        "deathday": person.deathday,
+                        "place_of_birth": person.place_of_birth,
+                        "gender": person.gender,
+                        "imdb_id": person.imdb_id,
+                        "also_known_as": person.also_known_as[:5] if person.also_known_as else [],  # 限制别名数量
+                    }
+                    # 添加豆瓣特有字段
+                    if person.source == "douban":
+                        simplified["url"] = person.url
+                        simplified["avatar"] = person.avatar
+                        simplified["latin_name"] = person.latin_name
+                        simplified["roles"] = person.roles[:5] if person.roles else []  # 限制角色数量
+                    # 添加Bangumi特有字段
+                    if person.source == "bangumi":
+                        simplified["career"] = person.career
+                        simplified["relation"] = person.relation
+                    
+                    simplified_results.append(simplified)
+                
+                result_json = json.dumps(simplified_results, ensure_ascii=False, indent=2)
+                # 如果结果被裁剪，添加提示信息
+                if total_count > 30:
+                    return f"注意：搜索结果共找到 {total_count} 条，为节省上下文空间，仅显示前 30 条结果。\n\n{result_json}"
+                return result_json
+            else:
+                return f"未找到相关人物信息: {name}"
+        except Exception as e:
+            error_message = f"搜索人物失败: {str(e)}"
+            logger.error(f"搜索人物失败: {e}", exc_info=True)
+            return error_message