Region dataset

backend/server/worldtravel/management/commands/download-countries.py

@@ -0,0 +1,115 @@
+import os
+from django.core.management.base import BaseCommand
+from django.contrib.auth import get_user_model
+import requests
+from worldtravel.models import Country, Region
+from django.db import transaction
+from django.contrib.gis.geos import GEOSGeometry, Polygon, MultiPolygon
+from django.contrib.gis.geos.error import GEOSException
+import json
+
+from django.conf import settings
+        
+media_root = settings.MEDIA_ROOT
+
+
+def saveCountryFlag(country_code):
+    flags_dir = os.path.join(media_root, 'flags')
+
+    # Check if the flags directory exists, if not, create it
+    if not os.path.exists(flags_dir):
+        os.makedirs(flags_dir)
+
+    # Check if the flag already exists in the media folder
+    flag_path = os.path.join(flags_dir, f'{country_code}.png')
+    if os.path.exists(flag_path):
+        print(f'Flag for {country_code} already exists')
+        return
+
+    res = requests.get(f'https://flagcdn.com/h240/{country_code.lower()}.png'.lower())
+    if res.status_code == 200:
+        with open(flag_path, 'wb') as f:
+            f.write(res.content)
+        print(f'Flag for {country_code} downloaded')
+    else:
+        print(f'Error downloading flag for {country_code}')
+
+class Command(BaseCommand):
+    help = 'Imports the world travel data'
+
+    def handle(self, *args, **options):
+        countries_json_path = os.path.join(settings.MEDIA_ROOT, 'countries+regions.json')
+        if not os.path.exists(countries_json_path):
+            res = requests.get('https://raw.githubusercontent.com/dr5hn/countries-states-cities-database/master/countries%2Bstates.json')
+            if res.status_code == 200:
+                with open(countries_json_path, 'w') as f:
+                    f.write(res.text)
+            else:
+                self.stdout.write(self.style.ERROR('Error downloading countries+regions.json'))
+                return
+            
+        with open(countries_json_path, 'r') as f:
+            data = json.load(f)
+
+        countries_to_create = []
+        regions_to_create = []
+
+        for country in data:
+            country_code = country['iso2']
+            country_name = country['name']
+            country_subregion = country['subregion']
+
+            country_obj = Country(
+                name=country_name,
+                country_code=country_code,
+                subregion=country_subregion
+            )
+            countries_to_create.append(country_obj)
+
+            saveCountryFlag(country_code)
+            self.stdout.write(self.style.SUCCESS(f'Country {country_name} prepared'))
+
+        # Bulk create countries first
+        with transaction.atomic():
+            Country.objects.bulk_create(countries_to_create, ignore_conflicts=True)
+
+        # Fetch all countries to get their database IDs
+        countries = {country.country_code: country for country in Country.objects.all()}
+
+        for country in data:
+            country_code = country['iso2']
+            country_obj = countries[country_code]
+            
+            if country['states']:
+                for state in country['states']:
+                    name = state['name']
+                    state_id = f"{country_code}-{state['state_code']}"
+                    latitude = round(float(state['latitude']), 6) if state['latitude'] else None
+                    longitude = round(float(state['longitude']), 6) if state['longitude'] else None
+
+                    region_obj = Region(
+                        id=state_id,
+                        name=name,
+                        country=country_obj,
+                        longitude=longitude,
+                        latitude=latitude
+                    )
+                    regions_to_create.append(region_obj)
+                    self.stdout.write(self.style.SUCCESS(f'State {state_id} prepared'))
+            else:
+                # Create one region with the name of the country if there are no states
+                region_obj = Region(
+                    id=f"{country_code}-00",
+                    name=country['name'],
+                    country=country_obj
+                )
+                regions_to_create.append(region_obj)
+                self.stdout.write(self.style.SUCCESS(f'Region {country_code}-00 prepared for {country["name"]}'))
+
+        # Bulk create regions
+        with transaction.atomic():
+            Region.objects.bulk_create(regions_to_create, ignore_conflicts=True)
+
+        self.stdout.write(self.style.SUCCESS('All data imported successfully'))
+
+