Leverage data from UDP discovery to initialize device structure (#132)

* avoid talking to devices after UDP discovery

* formatting fix

* more formatting

* more formatting changes

* undo gitignore changes

* fixing git ignore for black

Co-authored-by: dlee1j1 <dlee1j@yahoo.comm>

kasa/cli.py

@@ -174,13 +174,12 @@ async def dump_discover(ctx, scrub):
 async def discover(ctx, timeout, discover_only, dump_raw):
     """Discover devices in the network."""
     target = ctx.parent.params["target"]
-    click.echo(f"Discovering devices for {timeout} seconds")
+    click.echo(f"Discovering devices on {target} for {timeout} seconds")
     found_devs = await Discover.discover(
         target=target, timeout=timeout, return_raw=dump_raw
     )
     if not discover_only:
         for ip, dev in found_devs.items():
-            await dev.update()
             if dump_raw:
                 click.echo(dev)
                 continue

kasa/discover.py

@@ -77,7 +77,7 @@ class _DiscoverProtocol(asyncio.DatagramProtocol):
 
         device_class = Discover._get_device_class(info)
         device = device_class(ip)
-        asyncio.ensure_future(device.update())
+        device.update_from_discover_info(info)
 
         self.discovered_devices[ip] = device
         self.discovered_devices_raw[ip] = info

kasa/smartdevice.py

@@ -304,6 +304,11 @@ class SmartDevice:
         # TODO: keep accessible for tests
         self._sys_info = self._last_update["system"]["get_sysinfo"]
 
+    def update_from_discover_info(self, info):
+        """Update state from info from the discover call."""
+        self._last_update = info
+        self._sys_info = info["system"]["get_sysinfo"]
+
     @property  # type: ignore
     @requires_update
     def sys_info(self) -> Dict[str, Any]: