import logging
import asyncio
from typing import Optional, List, Any
from datetime import datetime
from db.customer_db import db as customer_db
from db.image_tasks_db import db as task_db
from db.chat_log_db import log_message, get_conversation

logger = logging.getLogger("cs_agent")

class DataRepository:
    """
    异步数据仓库：使用 asyncio.to_thread 屏蔽底层同步 IO 阻塞。
    """
    def __init__(self):
        self.customer_db = customer_db
        self.task_db = task_db

    # --- 聊天记录 (异步化) ---

    async def save_chat(self, platform: str, user_id: str, content: str, direction: str, acc_id: str = "", image_urls: list = None):
        """异步持久化存储聊天记录"""
        # 将图片URL列表转为\n分隔的字符串
        urls_str = "\n".join(image_urls) if image_urls else ""
        return await asyncio.to_thread(
            log_message,
            customer_id=user_id,
            message=content,
            direction=direction,
            platform=platform,
            acc_id=acc_id,
            image_urls=urls_str
        )

    async def get_chat_history(self, user_id: str, limit: int = 10, acc_id: str = "") -> List[dict]:
        """异步获取历史记录"""
        rows = await asyncio.to_thread(get_conversation, user_id, limit=limit, acc_id=acc_id)
        history = []
        for r in rows:
            role = "user" if r["direction"] == "in" else "assistant"
            history.append(
                {
                    "role": role,
                    "content": r["message"],
                    "timestamp": r.get("timestamp", ""),
                }
            )
        return history

    # --- 客户相关 (异步化) ---

    async def get_customer(self, platform: str, user_id: str):
        customer_key = f"{platform}:{user_id}"
        return await asyncio.to_thread(self.customer_db.get_customer, customer_key)

    # --- 任务相关 (异步化) ---

    async def create_task(self, platform: str, user_id: str, image_url: str, operation: str, requirements: str = ""):
        return await asyncio.to_thread(
            self.task_db.add_task,
            customer_id=user_id,
            platform=platform,
            original_image=image_url,
            operation=operation,
            requirements=requirements,
            status="pending"
        )

    async def update_task_price(self, platform: str, user_id: str, price: float):
        """异步记录成交价"""
        return await asyncio.to_thread(self.task_db.update_price, user_id, platform, price)

    async def update_task_outcome(self, platform: str, user_id: str, outcome: str):
        """异步记录最终结局"""
        return await asyncio.to_thread(self.task_db.update_outcome, user_id, platform, outcome)

# 全局异步仓库单例
repo = DataRepository()