Fix options flow, add unique ID to config entry, cache coordinator data

custom_components/o2/config_flow.py

@@ -20,6 +20,10 @@ class O2ConfigFlow(ConfigFlow, domain=DOMAIN):
     async def async_step_user(self, info):
         errors = {}
         if info is not None:
+            # Abort if entry already exists
+            await self.async_set_unique_id(info["email"])
+            self._abort_if_unique_id_configured()
+
             # Validate credentials
             session = O2ApiClient(
                 info["email"],
@@ -33,7 +37,7 @@ async def async_step_user(self, info):
 
             if len(errors) == 0:
                 return self.async_create_entry(
-                    title="O2 Account",
+                    title=info['email'],
                     data=info
                 )
 
@@ -57,12 +61,11 @@ async def async_step_init(self, options):
         if options is not None:
             data = dict(self._config_entry.data)
             # Validate credentials
-            session = O2ApiClient(
-                info["email"],
-                info["password"]
-            )
-
             if "password" in options:
+                session = O2ApiClient(
+                    options["email"],
+                    options["password"]
+                )
                 try:
                     await self.hass.async_add_executor_job(session.create_session)
                 except:
@@ -78,7 +81,7 @@ async def async_step_init(self, options):
                 # Update data
                 data.update(options)
                 self.hass.config_entries.async_update_entry(
-                    self._config_entry, data=data
+                    self._config_entry, data=data, title=data['email']
                 )
 
                 # Update options

custom_components/o2/const.py

@@ -2,7 +2,7 @@
 CONFIG_VERSION = 1
 ENTITY_TYPES = ["sensor"]
 USER_AGENT = "dan-r-homeassistant-o2"
-INTEGRATION_VERSION = "0.1.0"
+INTEGRATION_VERSION = "0.1.1"
 
 DATA_COORDINATOR = "coordinator"
 DATA_APICLIENT = "apiclient"

custom_components/o2/coordinator.py

@@ -17,14 +17,17 @@ def __init__(self, hass, config):
             update_interval=timedelta(minutes=30),
         )
         self._hass = hass
+        self._data = None
 
     async def _async_update_data(self):
         """Fetch data from API."""
         client = self._hass.data[DOMAIN][DATA_APICLIENT]
 
         try:
             data = await self._hass.async_add_executor_job(client.get_allowances)
+            self._data = data
+
             return data
         except BaseException:
             _LOGGER.warning("Error communicating with API")
-            return False
+            return self._data