153 lines
6.1 KiB
Python
153 lines
6.1 KiB
Python
"""
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ProfileAgent：用户资料收集 Specialist
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负责提取资料、资料追问、资料收集开场白，不负责 Redis 持久化（由 Orchestrator 统一处理）
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"""
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import json
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from typing import Any, Dict, List, Optional
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from langchain_core.messages import AIMessage, HumanMessage
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from app.core.dependencies import get_llm_provider
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from app.core.logging import get_logger
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from app.agents.chat.helpers import format_history_string, get_history_messages
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from app.agents.chat.prompts_profile import (
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get_profile_extraction_prompt,
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get_profile_followup_prompt,
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get_profile_greeting_prompt,
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)
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from app.features.memoir.memoir_images.json_payload import extract_json_payload
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logger = get_logger(__name__)
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def _get_langchain_llm():
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try:
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provider = get_llm_provider()
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return getattr(provider, "langchain_llm", None)
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except Exception:
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return None
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class ProfileAgent:
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"""用户资料收集 Specialist Agent"""
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def __init__(self):
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self.llm = _get_langchain_llm()
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async def extract_profile_from_message(
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self,
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user_message: str,
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missing_fields: List[str],
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conversation_id: Optional[str] = None,
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) -> Dict[str, Any]:
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"""从用户消息中提取资料字段，不持久化"""
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if not self.llm or not missing_fields:
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return {}
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recent_dialogue = ""
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if conversation_id:
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history_messages = await get_history_messages(conversation_id)
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recent = (
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history_messages[-4:] if len(history_messages) > 4 else history_messages
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)
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parts = []
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for msg in recent:
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if isinstance(msg, HumanMessage):
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parts.append(f"用户: {msg.content}")
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elif isinstance(msg, AIMessage):
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parts.append(f"助手: {msg.content}")
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recent_dialogue = "\n".join(parts) if parts else ""
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try:
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prompt = get_profile_extraction_prompt(
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user_message, missing_fields, recent_dialogue=recent_dialogue or None
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)
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json_llm = self.llm.bind(
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model_kwargs={"response_format": {"type": "json_object"}},
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max_tokens=512,
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)
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response = await json_llm.ainvoke(prompt)
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content = response.content.strip()
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parsed = json.loads(extract_json_payload(content))
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result = {}
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if "birth_year" in parsed and parsed["birth_year"] is not None:
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raw = parsed["birth_year"]
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if isinstance(raw, int) and 1900 <= raw <= 2100:
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result["birth_year"] = raw
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elif isinstance(raw, str) and raw.isdigit():
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y = int(raw)
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if y < 100:
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y = 1900 + y if y >= 50 else 2000 + y
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if 1900 <= y <= 2100:
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result["birth_year"] = y
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if "birth_place" in parsed and parsed["birth_place"]:
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result["birth_place"] = str(parsed["birth_place"])
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if "grew_up_place" in parsed and parsed["grew_up_place"]:
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result["grew_up_place"] = str(parsed["grew_up_place"])
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if "occupation" in parsed and parsed["occupation"]:
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result["occupation"] = str(parsed["occupation"])
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return result
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except (json.JSONDecodeError, Exception) as e:
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logger.error("提取资料信息失败: %s", e)
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return {}
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async def generate_profile_followup(
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self,
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conversation_id: str,
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user_message: str,
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missing_fields: List[str],
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filled_fields: Dict[str, str],
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nickname: str = "",
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) -> List[str]:
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"""生成资料追问回复，不持久化（由 Orchestrator 负责）"""
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if not self.llm:
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return ["谢谢！还能告诉我更多吗？"]
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try:
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prompt = get_profile_followup_prompt(
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missing_fields, filled_fields, user_message, nickname
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)
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history_messages = await get_history_messages(conversation_id)
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history_string = format_history_string(history_messages)
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full_prompt = (
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f"{prompt}\n\n{history_string}\n\nHuman: {user_message}\n\nAssistant:"
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)
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response = await self.llm.ainvoke(full_prompt)
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response_text = (
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response.content if hasattr(response, "content") else str(response)
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)
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messages = [
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msg.strip() for msg in response_text.split("[SPLIT]") if msg.strip()
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]
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return messages[:3] if messages else [response_text]
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except Exception as e:
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logger.error("生成资料跟进回复失败: %s", e)
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return ["谢谢分享！能再告诉我一些吗？"]
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async def generate_profile_greeting(
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self,
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conversation_id: str,
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missing_fields: List[str],
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nickname: str = "",
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) -> List[str]:
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"""生成资料收集开场白，不持久化（由 Orchestrator 负责）"""
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if not self.llm:
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return ["你好！在开始之前，能告诉我你是哪一年出生的吗？"]
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try:
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prompt = get_profile_greeting_prompt(missing_fields, nickname)
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history_messages = await get_history_messages(conversation_id)
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history_string = format_history_string(history_messages)
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full_prompt = f"{prompt}\n\n{history_string}" if history_string else prompt
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response = await self.llm.ainvoke(full_prompt)
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response_text = (
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response.content if hasattr(response, "content") else str(response)
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)
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messages = [
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msg.strip() for msg in response_text.split("[SPLIT]") if msg.strip()
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]
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return messages[:2] if messages else [response_text]
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except Exception as e:
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logger.error("生成资料收集开场白失败: %s", e)
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return [
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"你好！在我们开始聊人生故事之前，能先简单介绍一下你自己吗？比如你是哪一年出生的？"
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]
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