Added geolookup for station location

default.nix

@@ -10,6 +10,7 @@ buildPythonApplication {
     pillow
     requests
     pytz
+    geopy
   ];
 
   meta = with lib; {

update.py

@@ -10,7 +10,10 @@ from PIL import ImageDraw
 
 from io import BytesIO
 
+from geopy.geocoders import Nominatim
+
 FONT_SIZE = 40
+FONT_SIZE_SMALL = 20
 TEXT_COLOR = (255, 255, 255, 255)
 
 
@@ -66,9 +69,25 @@ def main():
         resp.json()['image'])
     print(sat_img_url)
 
+    geolocator = Nominatim(
+        user_agent=
+        "satnogs-demo-display - https://forgejo.zenerdio.de/sebastian/satnogs-demo-display"
+    )
+
     mode_desc = ob['transmitter_mode']
     frequency = ob['observation_frequency'] / 1_000_000
 
+    coord = "%f, %f" % (ob['station_lat'], ob['station_lng'])
+    address = geolocator.reverse(coord, exactly_one=True,
+                                 language="en").raw['address']
+    city = address.get('city', '')
+    country = address.get('country', '')
+    station_location = ""
+    if city != "":
+        station_location += "near " + city + " "
+    if country != "":
+        station_location += "in " + country
+
     resp = requests.get(ob['waterfall'])
     waterfall = Image.open(BytesIO(resp.content)).convert('RGBA')
     invert_back_white(waterfall)
@@ -98,8 +117,9 @@ def main():
     station_name = ob['station_name']
     if len(station_name) > 20:
         station_name = station_name[:20] + "..."
-    infos = "Satellite: %s\nStation: %s\nMode: %s\nFrequency: %f MHz\nStart: %s\nEnd: %s" % (
-        sat_name, station_name, mode_desc, frequency, ob['start'], ob['end'])
+    infos = "Satellite: %s\nStation: %s\n%s\nMode: %s\nFrequency: %f MHz\nStart: %s\nEnd: %s" % (
+        sat_name, station_name, station_location, mode_desc, frequency,
+        ob['start'], ob['end'])
 
     font = ImageFont.truetype("Montserrat-Regular.otf", FONT_SIZE)
     draw.text((water_width + 100, logo_h + 50), infos, TEXT_COLOR, font=font)
@@ -109,6 +129,9 @@ def main():
     if sat_img != None:
         img.paste(sat_img, (water_width + 100, 500))
 
+    font = ImageFont.truetype("Montserrat-Regular.otf", FONT_SIZE_SMALL)
+    draw.text((950, 1000), "Geocoding by Nominatim/OSM", TEXT_COLOR, font=font)
+
     img.save('waterfall_tmp.png')
     os.rename('waterfall_tmp.png', 'waterfall.png')