initial weather on weather forecast service

Pipfile

@@ -16,7 +16,10 @@ flask = "==1.1.2"
 gevent = "==20.6.1"
 TheCodeLabs-BaseUtils = "*"
 TheCodeLabs-FlaskUtils = "*"
-python-jenkins = "==1.5.0"
 Pillow = "==7.2.0"
 
+# services
+python-jenkins = "==1.5.0"
+plotly = "==4.8.2"
+
 [dev-packages]

src/logic/services/WeatherSevenDaysService.py

+import locale
+from datetime import datetime
+from typing import Dict
+
+import requests
+import plotly.graph_objects as go
+from TheCodeLabs_BaseUtils import CachedService
+
+
+class WeatherSevenDaysService(CachedService):
+    URL = 'https://api.openweathermap.org/data/2.5/onecall'
+
+    def __init__(self, settings):
+        super().__init__(settings['fetchIntervalInSeconds'])
+        self._settings = settings
+
+    def _fetch_data(self) -> Dict:
+        response = requests.get(self.URL, params={
+            'lat': self._settings['lat'],
+            'lon': self._settings['lon'],
+            'appid': self._settings['apiKey'],
+            'lang': 'de',
+            'units': 'metric'
+        })
+
+        if response.status_code != 200:
+            raise Exception(f'Invalid status code: {response.status_code}')
+
+        # TODO less invasive modification
+        locale.setlocale(locale.LC_ALL, 'de_DE')
+
+        forecast = response.json()['daily']
+
+        forecastData = {}
+        for day in forecast:
+            date = day['dt']
+            date = datetime.fromtimestamp(date)
+            date = datetime.strftime(date, '%a')
+            forecastData[date] = (int(day['temp']['min']), int(day['temp']['max']))
+
+        formattedDates = [f'<b>{value}</b>' for value in forecastData.keys()]
+        minValues = [x[0] for x in forecastData.values()]
+        maxValues = [x[1] for x in forecastData.values()]
+
+        layout = go.Layout(
+            plot_bgcolor='rgba(0,0,0,0)',
+            showlegend=False,
+            xaxis={
+                'tickfont': {
+                    'family': ' sans-serif',
+                    'size': 18
+                },
+                'showgrid': False,
+            },
+            yaxis={
+                'visible': False,
+            })
+
+        fig = go.Figure(layout=layout)
+        fig.add_trace(go.Scatter(x=formattedDates,
+                                 y=minValues,
+                                 text=[f'<b>{value}</b>' for value in minValues],
+                                 mode='lines+text',
+                                 line=dict(color='#CCCCCC'),
+                                 textfont=dict(
+                                     family='sans-serif',
+                                     size=18,
+                                     color='royalblue'
+                                 )))
+        fig.add_trace(go.Scatter(x=formattedDates,
+                                 y=maxValues,
+                                 text=[f'<b>{value}</b>' for value in maxValues],
+                                 mode='lines+text',
+                                 line=dict(color='#CCCCCC'),
+                                 textfont=dict(
+                                     family='sans-serif',
+                                     size=18,
+                                     color='crimson'
+                                 )))
+
+        fig.show()
+
+        return {}
+
+
+if __name__ == '__main__':
+    ws = WeatherSevenDaysService({
+        'fetchIntervalInSeconds': 10,
+        'apiKey': '',
+        'lat': 51.012825,
+        'lon': 13.666365
+    })
+
+    data = ws.get_data()