A bunch of changes...

[python_utils.git] / smart_home / outlets.py

diff --git a/smart_home/outlets.py b/smart_home/outlets.py
index f34d574ec0c721bb597124a90369215309208ec2..68dfd2b8913216453a230ebdb2c2c90e6914e54a 100644 (file)
--- a/smart_home/outlets.py
+++ b/smart_home/outlets.py
@@ -3,6 +3,8 @@
 """Utilities for dealing with the smart outlets."""
 
 from abc import abstractmethod
+import asyncio
+import atexit
 import datetime
 import json
 import logging
@@ -10,11 +12,16 @@ import os
 import re
 import subprocess
 import sys
-from typing import Dict, List, Optional
+from typing import Any, Dict, List, Optional
+
+from meross_iot.http_api import MerossHttpClient
+from meross_iot.manager import MerossManager
 
 import argparse_utils
 import config
+import decorator_utils
 import logging_utils
+import scott_secrets
 import smart_home.device as dev
 from google_assistant import ask_google, GoogleResponse
 from decorator_utils import timeout, memoized
@@ -227,3 +234,81 @@ class GoogleOutlet(BaseOutlet):
 
     def is_off(self) -> bool:
         return not self.is_on()
+
+
+@decorator_utils.singleton
+class MerossWrapper(object):
+    """Note that instantiating this class causes HTTP traffic with an
+    external Meross server.  Meross blocks customers who hit their
+    servers too aggressively so MerossOutlet is lazy about creating
+    instances of this class.
+
+    """
+
+    def __init__(self):
+        self.loop = asyncio.get_event_loop()
+        self.email = os.environ.get('MEROSS_EMAIL') or scott_secrets.MEROSS_EMAIL
+        self.password = os.environ.get('MEROSS_PASSWORD') or scott_secrets.MEROSS_PASSWORD
+        self.devices = self.loop.run_until_complete(self.find_meross_devices())
+        atexit.register(self.loop.close)
+
+    async def find_meross_devices(self) -> List[Any]:
+        http_api_client = await MerossHttpClient.async_from_user_password(
+            email=self.email, password=self.password
+        )
+
+        # Setup and start the device manager
+        manager = MerossManager(http_client=http_api_client)
+        await manager.async_init()
+
+        # Discover devices
+        await manager.async_device_discovery()
+        devices = manager.find_devices()
+        for device in devices:
+            await device.async_update()
+        return devices
+
+    def get_meross_device_by_name(self, name: str) -> Optional[Any]:
+        name = name.lower()
+        name = name.replace('_', ' ')
+        for device in self.devices:
+            if device.name.lower() == name:
+                return device
+        return None
+
+
+class MerossOutlet(BaseOutlet):
+    def __init__(self, name: str, mac: str, keywords: str = '') -> None:
+        super().__init__(name, mac, keywords)
+        self.meross_wrapper = None
+        self.device = None
+
+    def lazy_initialize_device(self):
+        """If we make too many calls to Meross they will block us; only talk
+        to them when someone actually wants to control a device."""
+        if self.meross_wrapper is None:
+            self.meross_wrapper = MerossWrapper()
+            self.device = self.meross_wrapper.get_meross_device_by_name(self.name)
+            if self.device is None:
+                raise Exception(f'{self.name} is not a known Meross device?!')
+
+    def turn_on(self) -> bool:
+        self.lazy_initialize_device()
+        self.meross_wrapper.loop.run_until_complete(
+            self.device.async_turn_on()
+        )
+        return True
+
+    def turn_off(self) -> bool:
+        self.lazy_initialize_device()
+        self.meross_wrapper.loop.run_until_complete(
+            self.device.async_turn_off()
+        )
+        return True
+
+    def is_on(self) -> bool:
+        self.lazy_initialize_device()
+        return self.device.is_on()
+
+    def is_off(self) -> bool:
+        return not self.is_on()