fix: rework geocoding api usage, make api url custom

src/fellchensammlung/migrations/0008_remove_location_osm_id.py

@@ -0,0 +1,20 @@
+# Generated by Django 5.0.6 on 2024-06-05 19:52
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        (
+            "fellchensammlung",
+            "0007_remove_location_country_remove_location_description_and_more",
+        ),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name="location",
+            name="osm_id",
+        ),
+    ]

src/fellchensammlung/models.py

@@ -64,10 +64,9 @@ class Species(models.Model):
 
 class Location(models.Model):
     def __str__(self):
-        return f"{self.name}"
+        return f"{self.name} ({self.latitude:.5}, {self.longitude:.5})"
 
     place_id = models.IntegerField()
-    osm_id = models.IntegerField()
     latitude = models.FloatField()
     longitude = models.FloatField()
     name = models.CharField(max_length=2000)

src/fellchensammlung/tools/geo.py

@@ -1,7 +1,10 @@
+import logging
+
 import requests
 import json
 from notfellchen import __version__ as nf_version
 from fellchensammlung.models import Location
+from notfellchen import settings
 
 from math import radians, sqrt, sin, cos, atan2
 
@@ -46,7 +49,7 @@ class RequestMock:
 
 
 class GeoAPI:
-    api_url = "https://nominatim.openstreetmap.org/search"
+    api_url = settings.GEOCODING_API_URL
     headers = {
         'User-Agent': f"Notfellchen {nf_version}",
         'From': 'info@notfellchen.org'  # This is another valid field
@@ -58,23 +61,42 @@ class GeoAPI:
         else:
             self.requests = requests
 
-    def get_coordinates_from_postcode(self, postcode):
-        result = self.requests.get(self.api_url, {"q": postcode, "format": "jsonv2"}, headers=self.headers).json()[0]
+    def get_coordinates_from_query(self, location_string):
+        result = self.requests.get(self.api_url, {"q": location_string, "format": "jsonv2"}, headers=self.headers).json()[0]
         return result["lat"], result["lon"]
 
+    def _get_raw_response(self, location_string):
+        result = self.requests.get(self.api_url, {"q": location_string, "format": "jsonv2"}, headers=self.headers)
+        return result.content
+
     def get_location_from_string(self, location_string):
-        result = self.requests.get(self.api_url, {"q": location_string, "format": "jsonv2"}, headers=self.headers).json()[0]
+        try:
+            result = self.requests.get(self.api_url,
+                                   {"q": location_string,
+                                    "format": "jsonv2"},
+                                   headers=self.headers).json()
+        except Exception as e:
+            logging.warning(f"Exception {e} when querying Nominatim")
+            return None
+        if len(result) == 0:
+            logging.warning(f"Couldn't find a result for {location_string} when querying Nominatim")
+            return None
+
+        result = result[0]
+        if "name" in result:
+            name = result["name"]
+        else:
+            name = result["display_name"]
         location = Location.objects.create(
             place_id=result["place_id"],
-            osm_id=result["osm_id"],
             latitude=result["lat"],
             longitude=result["lon"],
-            name=result["name"],
+            name=name,
         )
         return location
 
 
 if __name__ == "__main__":
-    geo = GeoAPI(debug=True)
-    print(geo.get_coordinates_from_postcode("72072"))
+    geo = GeoAPI(debug=False)
+    print(geo.get_coordinates_from_query("12101"))
     print(calculate_distance_between_coordinates(('48.4949904', '9.040330235970146'), ("48.648333", "9.451111")))

src/notfellchen/settings.py

@@ -79,6 +79,9 @@ DB_HOST = config.get("database", "host", fallback='')
 BASE_DIR = Path(__file__).resolve().parent.parent
 LOCALE_PATHS = [os.path.join(BASE_DIR, 'locale')]
 
+""" GEOCODING """
+GEOCODING_API_URL = config.get("geocoding", "api_url", fallback="https://nominatim.hyteck.de/search")
+
 """ E-MAIL  """
 console_only = config.getboolean("mail", "console_only", fallback="true")
 EMAIL_SUBJECT_PREFIX = config.get("mail", "prefix", fallback="[notfellchen]]")