From fe600b78772f9881a0a24507fb896a64ebaf326e Mon Sep 17 00:00:00 2001
From: Fabian Affolter <fabian@affolter-engineering.ch>
Date: Tue, 23 Jun 2015 12:33:31 +0200
Subject: [PATCH] add forecast

---
 .../components/sensor/openweathermap.py       | 46 ++++++++++++++-----
 1 file changed, 34 insertions(+), 12 deletions(-)

diff --git a/homeassistant/components/sensor/openweathermap.py b/homeassistant/components/sensor/openweathermap.py
index 2a82fa1206f..a9c019cbecb 100644
--- a/homeassistant/components/sensor/openweathermap.py
+++ b/homeassistant/components/sensor/openweathermap.py
@@ -1,7 +1,6 @@
 """
 homeassistant.components.sensor.openweathermap
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
 OpenWeatherMap (OWM) service.
 
 Configuration:
@@ -12,6 +11,7 @@ following to your config/configuration.yaml
 sensor:
   platform: openweathermap
   api_key: YOUR_APP_KEY
+  forecast: 0 or 1
   monitored_conditions:
     - weather
     - temperature
@@ -28,8 +28,12 @@ api_key
 *Required
 To retrieve this value log into your account at http://openweathermap.org/
 
+forecast
+*Optional
+Enables the forecast. The default is to display the current conditions.
+
 monitored_conditions
-*Required
+*Optional
 Conditions to monitor. See the configuration example above for a
 list of all available conditions to monitor.
 
@@ -79,6 +83,7 @@ def setup_platform(hass, config, add_devices, discovery_info=None):
 
     SENSOR_TYPES['temperature'][1] = hass.config.temperature_unit
     unit = hass.config.temperature_unit
+    forecast = config.get('forecast', 0)
     owm = OWM(config.get(CONF_API_KEY, None))
 
     if not owm:
@@ -87,13 +92,21 @@ def setup_platform(hass, config, add_devices, discovery_info=None):
             "Please check your settings for OpenWeatherMap.")
         return None
 
-    data = WeatherData(owm, hass.config.latitude, hass.config.longitude)
+    data = WeatherData(owm, forecast, hass.config.latitude,
+                       hass.config.longitude)
     dev = []
-    for variable in config['monitored_conditions']:
-        if variable not in SENSOR_TYPES:
-            _LOGGER.error('Sensor type: "%s" does not exist', variable)
-        else:
-            dev.append(OpenWeatherMapSensor(data, variable, unit))
+    try:
+        for variable in config['monitored_conditions']:
+            if variable not in SENSOR_TYPES:
+                _LOGGER.error('Sensor type: "%s" does not exist', variable)
+            else:
+                dev.append(OpenWeatherMapSensor(data, variable, unit))
+    except KeyError:
+        pass
+
+    if forecast == 1:
+        SENSOR_TYPES['forecast'] = ['Forecast', '']
+        dev.append(OpenWeatherMapSensor(data, 'forecast', unit))
 
     add_devices(dev)
 
@@ -103,7 +116,7 @@ class OpenWeatherMapSensor(Entity):
     """ Implements an OpenWeatherMap sensor. """
 
     def __init__(self, weather_data, sensor_type, unit):
-        self.client_name = 'Weather - '
+        self.client_name = 'Weather'
         self._name = SENSOR_TYPES[sensor_type][0]
         self.owa_client = weather_data
         self._unit = unit
@@ -114,7 +127,7 @@ class OpenWeatherMapSensor(Entity):
 
     @property
     def name(self):
-        return self.client_name + ' ' + self._name
+        return '{} {}'.format(self.client_name, self._name)
 
     @property
     def state(self):
@@ -132,6 +145,7 @@ class OpenWeatherMapSensor(Entity):
 
         self.owa_client.update()
         data = self.owa_client.data
+        fc_data = self.owa_client.fc_data
 
         if self.type == 'weather':
             self._state = data.get_detailed_status()
@@ -164,20 +178,28 @@ class OpenWeatherMapSensor(Entity):
             else:
                 self._state = 'not snowing'
                 self._unit_of_measurement = ''
+        elif self.type == 'forecast':
+            self._state = fc_data.get_weathers()[0].get_status()
 
 
 class WeatherData(object):
     """ Gets the latest data from OpenWeatherMap. """
 
-    def __init__(self, owm, latitude, longitude):
+    def __init__(self, owm, forecast, latitude, longitude):
         self.owm = owm
+        self.forecast = forecast
         self.latitude = latitude
         self.longitude = longitude
         self.data = None
+        self.fc_data = None
 
     @Throttle(MIN_TIME_BETWEEN_UPDATES)
     def update(self):
         """ Gets the latest data from OpenWeatherMap. """
-
         obs = self.owm.weather_at_coords(self.latitude, self.longitude)
         self.data = obs.get_weather()
+
+        if self.forecast == 1:
+            obs = self.owm.three_hours_forecast_at_coords(self.latitude,
+                                                          self.longitude)
+            self.fc_data = obs.get_forecast()