Fix for #5 Manually add bridge

This patch intruduces more robust handling of situations where
a bridge can not be discovered by means of UPnP.

A modal now pops up, which allows you to manually enter an
ipaddress if no bridge can be discovered.

main.py

@@ -5,7 +5,7 @@ from typing import Union
 import wx
 import wx.lib.scrolledpanel as scrolled
 
-from tinge import Tinge, HueBridge, HueGroup, HueLight, HueUtils
+from tinge import Tinge, HueBridge, HueGroup, HueLight, HueUtils, is_bridge
 
 
 class Hui(wx.Frame):
@@ -108,6 +108,29 @@ class Hui(wx.Frame):
                       lambda event, mgroupid=groupid: self.goto_group(mgroupid), group_btn)
             self.sizer.Add(inner_sizer, 0, wx.EXPAND)
 
+    def add_manual_discovery_dialog(self) -> bool:
+        self.sizer.Clear(delete_windows=True)
+        found_any: bool = False
+        text_entry: wx.TextEntryDialog = wx.TextEntryDialog(self.pnl, "Manually enter IP address of bridge:",
+                                                            caption="Auto discovery failure")
+        warn_label: wx.StaticText = wx.StaticText(self.pnl, label="Waiting for Button Press on Bridge")
+        if text_entry.ShowModal() == wx.ID_OK:
+            ipaddress: str = text_entry.GetValue()
+            if is_bridge(ipaddress):
+                self.sizer.Add(warn_label, 0, wx.ALIGN_CENTER)
+                self.sizer.Layout()
+                user_or_error = HueUtils.connect(ipaddress)
+                while user_or_error.is_error():
+                    user_or_error = HueUtils.connect(ipaddress)
+                self.m_tinge.append_bridge(HueBridge(ipaddress, user_or_error.get_user(), ipaddress))
+                found_any = True
+                self.m_tinge.write_all_bridges_to_conf()
+            else:
+                label = "Supplied IP Address did not match a Bridge.",
+                failure_msg: wx.GenericMessageDialog = wx.GenericMessageDialog(self.pnl, label, caption="Try again!")
+                failure_msg.ShowModal()
+        return found_any
+
     @redraw
     def add_lights(self, lights: list[HueLight]):
         """This will add the lights from a group to the sizer
@@ -245,6 +268,9 @@ class Hui(wx.Frame):
                 found_any = True
             self.m_tinge.write_all_bridges_to_conf()
             self.add_bridges()
+        else:
+            found_any = self.add_manual_discovery_dialog()
+            self.add_bridges()
         return found_any
 
     def get_ok_cancel_answer_from_modal(self, message: str) -> bool:

tinge/HueUtils/__init__.py

@@ -47,6 +47,25 @@ def is_valid_config(filename: str) -> bool:
     return os.path.exists(filename) and os.path.getsize(filename) > 0
 
 
+def is_bridge(ipaddress: str):
+    try:
+        response = make_request(ipaddress, "1234/lights")
+        discovered = False
+        if response:
+            resp = response.json()[0]
+            if 'error' in resp.keys():
+                m_keys = resp['error'].keys()
+                if 'description' in m_keys and 'address' in m_keys and 'type' in m_keys:
+                    # This is kinda ugly but line is too long with and statement
+                    if resp['error']['description'] == "unauthorized user":
+                        if resp['error']['address'] == "/lights":
+                            if resp['error']['type'] == 1:
+                                discovered = True
+    except simplejson.errors.JSONDecodeError:
+        pass
+    return discovered
+
+
 def make_request(ipaddress: str, path: str, method: str = "GET",
                  body: str = '') -> Union[None, requests.Response]:
     """Helper function to make an API call to the Hue API on the bridge

tinge/__init__.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
+import http
 import os
 from typing import Union
 
@@ -8,7 +9,7 @@ import toml
 from upnpy import UPnP
 
 from .HueBridge import HueBridge
-from .HueUtils import connect, is_valid_config, make_request
+from .HueUtils import connect, is_valid_config, make_request, is_bridge
 from .UserOrError import UserOrError
 
 
@@ -39,7 +40,12 @@ class Tinge:
         """Use UPnP to discover bridges on the current network
         """
         upnp: UPnP = UPnP()
-        discovered_devices = upnp.discover()
+        discovered_devices = list()
+        try:
+            discovered_devices = upnp.discover()
+        except http.client.BadStatusLine:
+            print("UPnP discovery failed")
+            return None
         discovered_bridges: list[dict] = list()
         seen_ips: list[str] = list()
         if not discovered_devices:
@@ -54,21 +60,7 @@ class Tinge:
                     discovered = True
                 # If not we try to do a request against the api and see if we get an answer we can understand
                 else:
-                    try:
-                        response = make_request(device.host, "1234/lights")
-                        if response:
-                            resp = response.json()[0]
-                            if 'error' in resp.keys():
-                                m_keys = resp['error'].keys()
-                                if 'description' in m_keys and 'address' in m_keys and 'type' in m_keys:
-                                    # This is kinda ugly but line is too long with and statement
-                                    if resp['error']['description'] == "unauthorized user":
-                                        if resp['error']['address'] == "/lights":
-                                            if resp['error']['type'] == 1:
-                                                discovered = True
-                    except simplejson.errors.JSONDecodeError:
-                        pass
-
+                    discovered = is_bridge(device.host)
                 if discovered:
                     bridge = {'ipaddress': device.host, 'name': device.get_friendly_name()}
                     if bridge not in discovered_bridges: