from fastapi import APIRouter, HTTPException, status
from typing import List
from app.core.device.manager import device_manager
from app.schemas.device import (
    Device, DeviceCreate, DeviceUpdate, DeviceList, 
    DeviceResponse, DeviceStatusResponse
)
from app.utils.log import get_logger

logger = get_logger(__name__)

router = APIRouter()

@router.get("/devices", response_model=DeviceList, summary="获取设备列表")
async def get_devices():
    """获取所有注册的设备列表"""
    try:
        devices = await device_manager.get_all_devices()
        return DeviceList(
            devices=devices,
            total=len(devices)
        )
    except Exception as e:
        logger.error(f"获取设备列表失败: {e}")
        raise HTTPException(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            detail=f"获取设备列表失败: {str(e)}"
        )

@router.post("/devices", response_model=DeviceResponse, summary="注册新设备")
async def register_device(device: DeviceCreate):
    """注册新设备"""
    try:
        new_device = await device_manager.register_device(device)
        logger.info(f"设备注册成功: {device.device_id}")
        return DeviceResponse(
            success=True,
            message="设备注册成功",
            data=new_device
        )
    except ValueError as e:
        logger.warning(f"设备注册失败: {e}")
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail=str(e)
        )
    except Exception as e:
        logger.error(f"设备注册异常: {e}")
        raise HTTPException(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            detail=f"设备注册失败: {str(e)}"
        )

@router.get("/devices/{device_id}", response_model=DeviceResponse, summary="获取设备信息")
async def get_device(device_id: str):
    """获取指定设备的详细信息"""
    try:
        device = await device_manager.get_device(device_id)
        if not device:
            raise HTTPException(
                status_code=status.HTTP_404_NOT_FOUND,
                detail=f"设备 {device_id} 不存在"
            )
        
        return DeviceResponse(
            success=True,
            message="获取设备信息成功",
            data=device
        )
    except HTTPException:
        raise
    except Exception as e:
        logger.error(f"获取设备信息失败: {device_id}, 错误: {e}")
        raise HTTPException(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            detail=f"获取设备信息失败: {str(e)}"
        )

@router.put("/devices/{device_id}", response_model=DeviceResponse, summary="更新设备信息")
async def update_device(device_id: str, update_data: DeviceUpdate):
    """更新设备信息"""
    try:
        updated_device = await device_manager.update_device_info(device_id, update_data)
        if not updated_device:
            raise HTTPException(
                status_code=status.HTTP_404_NOT_FOUND,
                detail=f"设备 {device_id} 不存在"
            )
        
        logger.info(f"设备信息更新成功: {device_id}")
        return DeviceResponse(
            success=True,
            message="设备信息更新成功",
            data=updated_device
        )
    except HTTPException:
        raise
    except Exception as e:
        logger.error(f"更新设备信息失败: {device_id}, 错误: {e}")
        raise HTTPException(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            detail=f"更新设备信息失败: {str(e)}"
        )

@router.delete("/devices/{device_id}", response_model=DeviceResponse, summary="注销设备")
async def unregister_device(device_id: str):
    """注销设备"""
    try:
        success = await device_manager.unregister_device(device_id)
        if not success:
            raise HTTPException(
                status_code=status.HTTP_404_NOT_FOUND,
                detail=f"设备 {device_id} 不存在"
            )
        
        logger.info(f"设备注销成功: {device_id}")
        return DeviceResponse(
            success=True,
            message="设备注销成功",
            data=None
        )
    except HTTPException:
        raise
    except Exception as e:
        logger.error(f"注销设备失败: {device_id}, 错误: {e}")
        raise HTTPException(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            detail=f"注销设备失败: {str(e)}"
        )

@router.get("/devices/{device_id}/status", response_model=DeviceStatusResponse, summary="获取设备状态")
async def get_device_status(device_id: str):
    """获取设备当前状态"""
    try:
        device = await device_manager.get_device(device_id)
        if not device:
            raise HTTPException(
                status_code=status.HTTP_404_NOT_FOUND,
                detail=f"设备 {device_id} 不存在"
            )
        
        from datetime import datetime
        return DeviceStatusResponse(
            device_id=device_id,
            status=device.status,
            timestamp=device.updated_at
        )
    except HTTPException:
        raise
    except Exception as e:
        logger.error(f"获取设备状态失败: {device_id}, 错误: {e}")
        raise HTTPException(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            detail=f"获取设备状态失败: {str(e)}"
        )

@router.get("/devices/protocol/{protocol_type}", response_model=DeviceList, summary="按协议类型获取设备")
async def get_devices_by_protocol(protocol_type: str):
    """根据协议类型获取设备列表"""
    try:
        devices = await device_manager.get_devices_by_protocol(protocol_type)
        return DeviceList(
            devices=devices,
            total=len(devices)
        )
    except Exception as e:
        logger.error(f"按协议类型获取设备失败: {protocol_type}, 错误: {e}")
        raise HTTPException(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            detail=f"获取设备列表失败: {str(e)}"
        )