"""AI 玩家代理：优先 LLM，失败自动降级到启发式。"""
from __future__ import annotations

from .fallback import HeuristicAgent


class LLMAgent:
    def __init__(self, player) -> None:
        self.player = player
        self.fallback = HeuristicAgent(player)
        from .llm_client import get_llm_client
        self.client = get_llm_client()

    async def decide(self, kind: str, ctx: dict):
        try:
            from .prompts import decision_messages
            system, user = decision_messages(kind, ctx)
            data = await self.client.chat_json(system, user)
            target = data.get("target")
            if target is None:
                return None
            target = int(target)
            if ctx["options"] and target not in ctx["options"]:
                return await self.fallback.decide(kind, ctx)
            return target
        except Exception:
            return await self.fallback.decide(kind, ctx)

    async def speak(self, ctx: dict) -> str:
        try:
            from .prompts import speech_messages
            system, user = speech_messages(ctx)
            text = await self.client.chat_text(system, user, timeout=40.0)
            text = text.strip().strip('"').strip()
            if not text:
                return await self.fallback.speak(ctx)
            return text[:300]
        except Exception:
            return await self.fallback.speak(ctx)


def make_agent(player):
    from ...config import CONFIG
    if CONFIG.llm.configured:
        return LLMAgent(player)
    return HeuristicAgent(player)