from typing import Optional, Dict
from services.device_config import device_config_manager, DeviceConfig
from services.role_manager import role_manager
from services.conversation_history import conversation_history_manager, DeviceConversationHistory
from handlers.prompt_sound_handler import send_welcome_sound
from utils.logger import session_logger

class DeviceService:
    async def get_device_role(self, device_id: str) -> Dict:
        """获取设备当前使用的角色"""
        from handlers.command_handler import get_device_role as handler_get_device_role
        device_config = await device_config_manager.get_config(device_id, force_refresh=True)
        selected_role = await handler_get_device_role(device_id)
        result = {
            "role_key": selected_role.get("role_key", ""),
            "name": selected_role.get("name", "未命名角色"),
            "description": selected_role.get("description", ""),
            "preferred_language": device_config.preferred_language if device_config else None
        }
        if "multilingual" in selected_role:
            result["languages"] = list(selected_role["multilingual"].keys())
        return result
    
    async def update_device_role(self, device_id: str, role_key: str, language: Optional[str] = None) -> Dict:
        """更新设备角色配置"""
        role = await role_manager.get_role(role_key)
        if not role:
            raise ValueError(f"角色 {role_key} 不存在")
        
        try:
            current_config = await device_config_manager.get_config(device_id, force_refresh=True)
            preserved_language = language or (current_config.preferred_language if current_config else None)
            device_config = DeviceConfig(selected_role_key=role_key, preferred_language=preserved_language)
            await device_config_manager.set_config(device_id, device_config)
            
            await conversation_history_manager.set_history(device_id, DeviceConversationHistory())
            await send_welcome_sound(device_id, role_key, preserved_language)
            
            session_logger.info(device_id, "config", f"设备的角色已通过API更新为 {role_key}, 语言: {preserved_language or '默认'}")
            return {
                "status": "success", 
                "device_id": device_id, 
                "role_key": role_key,
                "language": preserved_language
            }
        except Exception as e:
            session_logger.error(device_id, "config", f"通过API更新角色时出错: {str(e)}")
            raise

device_service = DeviceService()