from typing import List, Optional, Dict
from ..schemas.chat import ChatMessage
from ..core.ark_client import config


def convert_messages_for_api(messages: List[ChatMessage]) -> List[Dict[str, str]]:
    return [{"role": msg.role, "content": msg.content} for msg in messages]


def get_latest_user_message(messages: List[ChatMessage]) -> Optional[ChatMessage]:
    for message in reversed(messages):
        if message.role == "user":
            return message
    return None


def get_previous_response_id(username: str, chat_history: dict) -> Optional[str]:
    if username in chat_history:
        for message in reversed(chat_history[username]):
            if message.role == "assistant" and message.response_id:
                return message.response_id
    return None


def get_doubao_tools() -> list:
    return [{
        "type": "doubao_app",
        "feature": {
            # 联网搜索功能
            "ai_search": {
                "type": "disabled",
                "role_description": config.ROLE_DESCRIPTION
            },
            # 边想边搜功能
            "reasoning_search":{
                "type": "enabled",
                "role_description": config.ROLE_DESCRIPTION
            }
        },
        "user_location": {
            "type": "approximate",
            "country": "中国",
            "region": "浙江",
            "city": "杭州"
        }
    }]