#!/usr/bin/env python3
# -*- coding: utf-8 -*-

"""
设备模拟接口模块，用于模拟场内子系统设备
支持四级结构：平台->中继->区域主控->普通设备
"""

import random
import time
import logging
from datetime import datetime
from enum import Enum

# 配置日志
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)


class DeviceType(Enum):
    """设备类型枚举"""
    AREA_CONTROLLER = "area_controller"  # 区域主控
    NORMAL_DEVICE = "normal_device"      # 普通设备


class SimulatedDevice:
    """模拟设备基类"""
    
    def __init__(self, device_id, device_type, status="stopped"):
        """
        初始化模拟设备
        
        Args:
            device_id (str): 设备ID
            device_type (DeviceType): 设备类型
            status (str): 初始状态
        """
        self.device_id = device_id
        self.device_type = device_type
        self.status = status
        self.created_at = time.time()
        logger.info(f"创建模拟设备: ID={device_id}, 类型={device_type.value}, 状态={status}")


class AreaController(SimulatedDevice):
    """区域主控设备"""
    
    def __init__(self, device_id, lora_address, status="stopped"):
        """
        初始化区域主控设备
        
        Args:
            device_id (str): 设备ID
            lora_address (str): LoRa地址
            status (str): 初始状态
        """
        super().__init__(device_id, DeviceType.AREA_CONTROLLER, status)
        self.lora_address = lora_address
        self.devices = {}  # 管理的普通设备
        logger.info(f"创建区域主控: ID={device_id}, LoRa地址={lora_address}")
    
    def add_device(self, device):
        """
        添加普通设备到区域主控
        
        Args:
            device (NormalDevice): 普通设备实例
        """
        self.devices[device.device_id] = device
        logger.info(f"区域主控 {self.device_id} 添加设备: {device.device_id}")
    
    def remove_device(self, device_id):
        """
        从区域主控移除普通设备
        
        Args:
            device_id (str): 设备ID
        """
        if device_id in self.devices:
            del self.devices[device_id]
            logger.info(f"区域主控 {self.device_id} 移除设备: {device_id}")
    
    def get_device(self, device_id):
        """
        获取区域主控下的普通设备
        
        Args:
            device_id (str): 设备ID
            
        Returns:
            NormalDevice: 普通设备实例，如果不存在则返回None
        """
        return self.devices.get(device_id)
    
    def get_all_devices(self):
        """
        获取区域主控下的所有普通设备
        
        Returns:
            list: 所有普通设备实例的列表
        """
        return list(self.devices.values())


class NormalDevice(SimulatedDevice):
    """普通设备"""
    
    def __init__(self, device_id, device_type, rs485_bus, rs485_address, controller_id, status="stopped"):
        """
        初始化普通设备
        
        Args:
            device_id (str): 设备ID
            device_type (str): 设备类型（如风机、水帘等）
            rs485_bus (str): 485总线号
            rs485_address (str): 485总线地址
            controller_id (str): 所属区域主控ID
            status (str): 初始状态
        """
        super().__init__(device_id, DeviceType.NORMAL_DEVICE, status)
        self.device_type = device_type
        self.rs485_bus = rs485_bus
        self.rs485_address = rs485_address
        self.controller_id = controller_id
        logger.info(f"创建普通设备: ID={device_id}, 类型={device_type}, "
                   f"485总线={rs485_bus}, 485地址={rs485_address}, 所属主控={controller_id}")


class DeviceManager:
    """设备管理器"""
    
    def __init__(self):
        """初始化设备管理器"""
        self.controllers = {}  # 区域主控设备
        self.devices = {}      # 所有普通设备
        logger.info("初始化设备管理器")
    
    def add_controller(self, controller):
        """
        添加区域主控设备
        
        Args:
            controller (AreaController): 区域主控设备实例
        """
        self.controllers[controller.device_id] = controller
        logger.info(f"添加区域主控到管理器: {controller.device_id}")
    
    def remove_controller(self, controller_id):
        """
        移除区域主控设备
        
        Args:
            controller_id (str): 区域主控设备ID
        """
        if controller_id in self.controllers:
            # 同时移除该主控下的所有普通设备
            controller = self.controllers[controller_id]
            for device_id in list(controller.devices.keys()):
                if device_id in self.devices:
                    del self.devices[device_id]
            del self.controllers[controller_id]
            logger.info(f"从管理器移除区域主控: {controller_id}")
    
    def get_controller(self, controller_id):
        """
        获取区域主控设备
        
        Args:
            controller_id (str): 区域主控设备ID
            
        Returns:
            AreaController: 区域主控设备实例，如果不存在则返回None
        """
        controller = self.controllers.get(controller_id)
        if controller:
            logger.debug(f"获取区域主控: {controller_id}")
        else:
            logger.warning(f"尝试获取不存在的区域主控: {controller_id}")
        return controller
    
    def get_all_controllers(self):
        """
        获取所有区域主控设备
        
        Returns:
            list: 所有区域主控设备实例的列表
        """
        logger.info(f"获取所有区域主控，共 {len(self.controllers)} 个")
        return list(self.controllers.values())
    
    def add_device(self, device):
        """
        添加普通设备
        
        Args:
            device (NormalDevice): 普通设备实例
        """
        self.devices[device.device_id] = device
        logger.info(f"添加普通设备到管理器: {device.device_id}")
    
    def remove_device(self, device_id):
        """
        移除普通设备
        
        Args:
            device_id (str): 设备ID
        """
        if device_id in self.devices:
            del self.devices[device_id]
            logger.info(f"从管理器移除设备: {device_id}")
    
    def get_device(self, device_id):
        """
        获取普通设备
        
        Args:
            device_id (str): 设备ID
            
        Returns:
            NormalDevice: 普通设备实例，如果不存在则返回None
        """
        device = self.devices.get(device_id)
        if device:
            logger.debug(f"获取普通设备: {device_id}")
        else:
            logger.warning(f"尝试获取不存在的普通设备: {device_id}")
        return device
    
    def get_all_devices(self):
        """
        获取所有普通设备
        
        Returns:
            list: 所有普通设备实例的列表
        """
        logger.info(f"获取所有普通设备，共 {len(self.devices)} 个")
        return list(self.devices.values())
    
    def reinitialize_devices(self, controllers_config, devices_config):
        """
        重新初始化设备（根据新的配置）
        
        Args:
            controllers_config (list): 区域主控设备配置列表
            devices_config (list): 普通设备配置列表
        """
        logger.info("重新初始化设备")
        
        # 清空现有设备
        self.controllers.clear()
        self.devices.clear()
        
        # 根据新配置创建区域主控设备
        controllers = {}
        for controller_config in controllers_config:
            controller = AreaController(
                device_id=controller_config['id'],
                lora_address=controller_config['lora_address'],
                status=controller_config.get('status', 'stopped')
            )
            self.add_controller(controller)
            controllers[controller.device_id] = controller
        
        # 根据新配置创建普通设备，并关联到区域主控
        for device_config in devices_config:
            device = NormalDevice(
                device_id=device_config['id'],
                device_type=device_config['type'],
                rs485_bus=device_config['rs485_bus'],
                rs485_address=device_config['rs485_address'],
                controller_id=device_config['controller_id'],
                status=device_config.get('status', 'stopped')
            )
            self.add_device(device)
            
            # 将设备添加到对应的区域主控中
            controller_id = device_config['controller_id']
            if controller_id in controllers:
                controllers[controller_id].add_device(device)
        
        logger.info(f"设备重新初始化完成，创建了 {len(controllers)} 个区域主控和 {len(devices_config)} 个普通设备")
    
    def control_device(self, device_id, action):
        """
        控制指定设备
        
        Args:
            device_id (str): 设备ID
            action (str): 控制动作
            
        Returns:
            dict: 控制结果
        """
        logger.info(f"控制设备: ID={device_id}, 动作={action}")
        
        # 查找设备（先在普通设备中查找，再在区域主控中查找）
        device = self.get_device(device_id)
        if not device:
            device = self.get_controller(device_id)
        
        if not device:
            return {
                "status": "failed",
                "message": f"设备不存在: {device_id}"
            }
        
        # 执行控制动作
        if action in ["on", "off"]:
            device.status = "running" if action == "on" else "stopped"
            return {
                "status": "success",
                "message": f"设备控制成功: {action}",
                "data": {
                    "device_id": device_id,
                    "status": device.status
                }
            }
        else:
            return {
                "status": "failed",
                "message": f"不支持的动作: {action}"
            }
    
    def query_device_status(self, device_id):
        """
        查询设备状态
        
        Args:
            device_id (str): 设备ID
            
        Returns:
            dict: 设备状态信息
        """
        logger.info(f"查询设备状态: ID={device_id}")
        
        # 查找设备（先在普通设备中查找，再在区域主控中查找）
        device = self.get_device(device_id)
        if not device:
            device = self.get_controller(device_id)
        
        if not device:
            return {
                "status": "failed",
                "message": f"设备不存在: {device_id}"
            }
        
        # 返回设备状态
        return {
            "status": "success",
            "message": "查询设备状态成功",
            "data": {
                "device_id": device_id,
                "status": device.status
            }
        }
    
    def query_all_device_status(self):
        """
        查询所有设备状态
        
        Returns:
            list: 所有设备状态信息列表
        """
        logger.info("查询所有设备状态")
        
        statuses = []
        
        # 添加所有区域主控设备状态
        for controller in self.get_all_controllers():
            statuses.append({
                "device_id": controller.device_id,
                "device_type": "area_controller",
                "status": controller.status
            })
            
            # 添加该控制器下的所有普通设备状态
            for device in controller.get_all_devices():
                statuses.append({
                    "device_id": device.device_id,
                    "device_type": device.device_type,
                    "status": device.status
                })
        
        # 添加未分配到控制器的普通设备状态
        controller_device_ids = set()
        for controller in self.get_all_controllers():
            controller_device_ids.update(controller.devices.keys())
            
        for device in self.get_all_devices():
            if device.device_id not in controller_device_ids:
                statuses.append({
                    "device_id": device.device_id,
                    "device_type": device.device_type,
                    "status": device.status
                })
        
        return statuses