owm.py: import sys
[chrisu/seepark.git] / owm.py
diff --git a/owm.py b/owm.py
index 04d38b50ca421b71697e0aa750204d3054820d58..f8d6ccbe065cdbc810fd40435e342ac5fce865b8 100755 (executable)
--- a/owm.py
+++ b/owm.py
@@ -7,10 +7,14 @@
 # 3319578 for Obsteig, AT
 
 from pprint import pprint
+import argparse
 import requests
 import configparser
 import os
+import csv
 import datetime
+import math
+import sys
 
 baseurl = 'http://api.openweathermap.org/data/2.5/weather'
 debug = False
@@ -36,6 +40,8 @@ def fromtimestamp(timestamp, format):
 
 # https://stackoverflow.com/questions/7490660/converting-wind-direction-in-angles-to-text-words
 def degToCompass(num):
+    if num is None:
+        return 'N/A'
     val=int((num/22.5)+.5)
     arr=["N","NNO","NO","ONO","O","OSO", "SO", "SSO","S","SSW","SW","WSW","W","WNW","NW","NNW"]
     return arr[(val % 16)]
@@ -43,18 +49,18 @@ def degToCompass(num):
 
 def extractweatherdata(w):
     data = dict(
-        datetime = w.get('dt'),
-        sunrise = w.get('sys').get('sunrise'),
-        sunset = w.get('sys').get('sunset'),
-        temp = w.get('main').get('temp'),
-        pressure = w.get('main').get('pressure'),
-        humidity = w.get('main').get('humidity'),
-        visibility = w.get('visibility'),
-        weather=w['weather'][0]['description'],
-        sky=w['weather'][0]['main'],
-        windspeed=w.get('wind').get('speed'),
-        winddegrees=w.get('wind').get('deg'),
-        cloudiness=w.get('clouds').get('all'),
+        datetime = w['dt'],
+        sunrise = w['sys']['sunrise'],
+        sunset = w['sys']['sunset'],
+        temp = w['main']['temp'],
+        pressure = w['main']['pressure'],
+        humidity = w['main']['humidity'],
+        visibility = w['visibility'],
+        weather = w['weather'][0]['description'],
+        sky = w['weather'][0]['main'],
+        windspeed = w['wind']['speed'],
+        winddegrees = w['wind']['deg'],
+        cloudiness = w['clouds']['all'],
     )
 
     data['sunrise_t'] = fromtimestamp(data['sunrise'], '%H:%M:%S')
@@ -62,15 +68,34 @@ def extractweatherdata(w):
     data['date'] = fromtimestamp(data['datetime'], '%Y-%m-%d')
     data['time'] = fromtimestamp(data['datetime'], '%H:%M:%S')
     data['winddirection'] = degToCompass(data['winddegrees'])
+    data['precipitation'] = w['rain']['3h'] if 'rain' in w else math.nan
 
     return data
-        
 
-def main():
+
+def write_csv(csv_file, weather_data):
+    """output like wetter.at.pl"""
+    with open(csv_file, "a", newline="") as file:
+        writer = csv.writer(file, dialect="excel", delimiter=';')
+        writer.writerow([
+            weather_data['date'],
+            weather_data['time'],
+            weather_data['sunrise_t'],
+            weather_data['sunset_t'],
+            "{:.2f}".format(weather_data['temp']),
+            "{:.2f} mm/h".format(weather_data['precipitation']),
+            "{:.1f} km/h {}".format(weather_data['windspeed'], weather_data['winddirection']),
+            weather_data['weather'],
+            "{}".format(weather_data['cloudiness'])
+        ])
+
+
+def main(configfile):
     config = configparser.ConfigParser()
-    config.read(os.path.expanduser('~/seewasser.ini'))
-    apikey = config.get('openweathermap', 'apikey');
-    cityid = config.get('openweathermap', 'cityid');
+    config.read(configfile)
+    apikey = config.get('openweathermap', 'apikey')
+    cityid = config.get('openweathermap', 'cityid')
+    csvfile = config.get("openweathermap", 'csvfilename')
 
     weather_raw = getweather(apikey, cityid)
     if debug:
@@ -78,23 +103,17 @@ def main():
     weather = extractweatherdata(weather_raw)
     if debug:
         pprint(weather)
+
     # TODO:
     # write to db
+
     # write to csv
-    
-    # output like wetter.at.pl
-    print(
-        weather['date'] + ';' +
-        weather['time'] + ';' +
-        weather['sunrise_t'] + ';' +
-        weather['sunset_t'] + ';' +
-        str(weather['temp']) + ';' +
-        ';' + # precipitation missing? or only in XML: https://openweathermap.org/current ?
-        str(weather['windspeed']) + 'km/h ' + weather['winddirection'] + ';' +
-        weather['weather'] + ';' +
-        str(weather['cloudiness'])
-    )
+    write_csv(os.path.expanduser(csvfile), weather)
+
 
-    
 if __name__ == '__main__':
-    main()
+    default_config_file = os.path.expanduser('~/seewasser.ini')
+    parser = argparse.ArgumentParser(description='Get OpenWeathermap data')
+    parser.add_argument('--config', default=default_config_file, help='configuration file')
+    args = parser.parse_args()
+    main(args.config)