Initial support for wifi speakers

First steps towards fixing #69, we require feedback
from someone who owns the device to complete it.

mirobo/__init__.py

@@ -15,3 +15,4 @@
 from mirobo.fan import Fan
 from mirobo.device import Device, DeviceException
 from mirobo.discovery import Discovery
+from mirobo.wifispeaker import WifiSpeaker

mirobo/discovery.py

@@ -4,7 +4,8 @@
 import inspect
 import codecs
 from . import (Device, Vacuum, Plug, PlugV1, Strip, AirPurifier, Ceil,
-               PhilipsEyecare, ChuangmiIr, AirHumidifier, WaterPurifier)
+               PhilipsEyecare, ChuangmiIr, AirHumidifier, WaterPurifier,
+               WifiSpeaker)
 from typing import Union, Callable, Dict, Optional  # noqa: F401
 
 
@@ -31,6 +32,7 @@
     "philips-light-bulb": Ceil,
     "philips-light-ceil": Ceil,
     "philips-light-sread1": PhilipsEyecare,
+    "xiaomi-wifispeaker-v1": WifiSpeaker,  # name needs to be checked
     "yeelink-light-": lambda x: other_package_info(
         x, "python-yeelight package"),
     "lumi-gateway-": lambda x: other_package_info(

mirobo/wifispeaker.py

@@ -0,0 +1,79 @@
+import warnings
+import logging
+from .device import Device
+
+_LOGGER = logging.getLogger(__name__)
+
+
+class WifiSpeakerStatus:
+    def __init__(self, data):
+        self.data = data
+
+    @property
+    def device_name(self) -> str:
+        return self.data["DeviceName"]
+
+    @property
+    def channel(self) -> str:
+        return self.data["channel_title"]
+
+    @property
+    def state(self) -> str:
+        # note: this can be enumized when all values are known
+        return self.data["current_state"]
+
+    @property
+    def hardware_version(self) -> str:
+        return self.data["hardware_version"]
+
+    @property
+    def play_mode(self):
+        # note: this can be enumized when all values are known
+        return self.data["play_mode"]
+
+    @property
+    def track_artist(self) -> str:
+        return self.data["track_artist"]
+
+    @property
+    def track_title(self) -> str:
+        return self.data["track_title"]
+
+    @property
+    def track_duration(self) -> str:
+        return self.data["track_duration"]
+
+    @property
+    def transport_channel(self) -> str:
+        # note: this can be enumized when all values are known
+        return self.data["transport_channel"]
+
+
+class WifiSpeaker(Device):
+    def __init__(self, *args, **kwargs):
+        warnings.warn("Please help to complete this by providing more "
+                      "information about possible values for `state`, "
+                      "`play_mode` and `transport_channel`.", stacklevel=2)
+        super().__init__(*args, **kwargs)
+
+    def status(self):
+        return WifiSpeakerStatus(self.command("get_prop", ["umi"]))
+
+    def power(self):
+        # is this a toggle?
+        return self.send("power")
+
+    def volume_up(self):
+        return self.send("vol_up")
+
+    def volume_down(self):
+        return self.send("vol_down")
+
+    def track_previous(self):
+        return self.send("previous_track")
+
+    def track_next(self):
+        return self.send("next_track")
+
+    def track_location(self):
+        return self.send("get_prop", ["rel_time"])