mirror of
https://github.com/seanmorley15/AdventureLog.git
synced 2025-07-23 23:09:37 +02:00
233 lines
8.6 KiB
Python
233 lines
8.6 KiB
Python
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from rest_framework import viewsets
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from rest_framework.decorators import action
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from rest_framework.permissions import IsAuthenticated
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from rest_framework.response import Response
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from django.conf import settings
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import requests
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from geopy.distance import geodesic
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import time
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class RecommendationsViewSet(viewsets.ViewSet):
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permission_classes = [IsAuthenticated]
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BASE_URL = "https://overpass-api.de/api/interpreter"
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HEADERS = {'User-Agent': 'AdventureLog Server'}
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def parse_google_places(self, places, origin):
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adventures = []
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for place in places:
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location = place.get('geometry', {}).get('location', {})
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types = place.get('types', [])
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formatted_address = place.get("vicinity") or place.get("formatted_address") or place.get("name")
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lat = location.get('lat')
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lon = location.get('lng')
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if not place.get("name") or not lat or not lon:
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continue
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distance_km = geodesic(origin, (lat, lon)).km
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adventure = {
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"id": place.get('place_id'),
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"type": 'place',
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"name": place.get('name', ''),
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"description": place.get('business_status', None),
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"latitude": lat,
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"longitude": lon,
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"address": formatted_address,
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"tag": types[0] if types else None,
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"distance_km": round(distance_km, 2), # Optional: include in response
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}
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adventures.append(adventure)
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# Sort by distance ascending
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adventures.sort(key=lambda x: x["distance_km"])
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return adventures
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def parse_overpass_response(self, data, request):
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nodes = data.get('elements', [])
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adventures = []
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all = request.query_params.get('all', False)
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origin = None
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try:
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origin = (
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float(request.query_params.get('lat')),
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float(request.query_params.get('lon'))
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)
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except:
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pass
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for node in nodes:
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if node.get('type') not in ['node', 'way', 'relation']:
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continue
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tags = node.get('tags', {})
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lat = node.get('lat')
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lon = node.get('lon')
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name = tags.get('name', tags.get('official_name', ''))
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if not name or lat is None or lon is None:
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if not all:
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continue
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# Flatten address
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address_parts = [tags.get(f'addr:{k}') for k in ['housenumber', 'street', 'suburb', 'city', 'state', 'postcode', 'country']]
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formatted_address = ", ".join(filter(None, address_parts)) or name
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# Calculate distance if possible
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distance_km = None
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if origin:
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distance_km = round(geodesic(origin, (lat, lon)).km, 2)
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# Unified format
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adventure = {
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"id": f"osm:{node.get('id')}",
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"type": "place",
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"name": name,
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"description": tags.get('description'),
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"latitude": lat,
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"longitude": lon,
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"address": formatted_address,
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"tag": next((tags.get(key) for key in ['leisure', 'tourism', 'natural', 'historic', 'amenity'] if key in tags), None),
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"distance_km": distance_km,
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"powered_by": "osm"
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}
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adventures.append(adventure)
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# Sort by distance if available
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if origin:
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adventures.sort(key=lambda x: x.get("distance_km") or float("inf"))
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return adventures
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def query_overpass(self, lat, lon, radius, category, request):
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if category == 'tourism':
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query = f"""
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[out:json];
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(
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node(around:{radius},{lat},{lon})["tourism"];
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node(around:{radius},{lat},{lon})["leisure"];
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node(around:{radius},{lat},{lon})["historic"];
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node(around:{radius},{lat},{lon})["sport"];
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node(around:{radius},{lat},{lon})["natural"];
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node(around:{radius},{lat},{lon})["attraction"];
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node(around:{radius},{lat},{lon})["museum"];
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node(around:{radius},{lat},{lon})["zoo"];
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node(around:{radius},{lat},{lon})["aquarium"];
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);
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out;
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"""
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elif category == 'lodging':
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query = f"""
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[out:json];
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(
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node(around:{radius},{lat},{lon})["tourism"="hotel"];
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node(around:{radius},{lat},{lon})["tourism"="motel"];
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node(around:{radius},{lat},{lon})["tourism"="guest_house"];
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node(around:{radius},{lat},{lon})["tourism"="hostel"];
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node(around:{radius},{lat},{lon})["tourism"="camp_site"];
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node(around:{radius},{lat},{lon})["tourism"="caravan_site"];
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node(around:{radius},{lat},{lon})["tourism"="chalet"];
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node(around:{radius},{lat},{lon})["tourism"="alpine_hut"];
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node(around:{radius},{lat},{lon})["tourism"="apartment"];
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);
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out;
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"""
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elif category == 'food':
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query = f"""
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[out:json];
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(
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node(around:{radius},{lat},{lon})["amenity"="restaurant"];
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node(around:{radius},{lat},{lon})["amenity"="cafe"];
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node(around:{radius},{lat},{lon})["amenity"="fast_food"];
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node(around:{radius},{lat},{lon})["amenity"="pub"];
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node(around:{radius},{lat},{lon})["amenity"="bar"];
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node(around:{radius},{lat},{lon})["amenity"="food_court"];
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node(around:{radius},{lat},{lon})["amenity"="ice_cream"];
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node(around:{radius},{lat},{lon})["amenity"="bakery"];
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node(around:{radius},{lat},{lon})["amenity"="confectionery"];
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);
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out;
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"""
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else:
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return Response({"error": "Invalid category."}, status=400)
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overpass_url = f"{self.BASE_URL}?data={query}"
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try:
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response = requests.get(overpass_url, headers=self.HEADERS)
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response.raise_for_status()
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data = response.json()
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except Exception as e:
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print("Overpass API error:", e)
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return Response({"error": "Failed to retrieve data from Overpass API."}, status=500)
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adventures = self.parse_overpass_response(data, request)
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return Response(adventures)
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@action(detail=False, methods=['get'])
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def query(self, request):
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lat = request.query_params.get('lat')
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lon = request.query_params.get('lon')
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radius = request.query_params.get('radius', '1000')
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category = request.query_params.get('category', 'all')
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if not lat or not lon:
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return Response({"error": "Latitude and longitude parameters are required."}, status=400)
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valid_categories = {
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'lodging': 'lodging',
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'food': 'restaurant',
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'tourism': 'tourist_attraction',
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}
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if category not in valid_categories:
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return Response({"error": f"Invalid category. Valid categories: {', '.join(valid_categories)}"}, status=400)
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api_key = getattr(settings, 'GOOGLE_MAPS_API_KEY', None)
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# Fallback to Overpass if no API key configured
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if not api_key:
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return self.query_overpass(lat, lon, radius, category, request)
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base_url = "https://maps.googleapis.com/maps/api/place/nearbysearch/json"
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params = {
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'location': f"{lat},{lon}",
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'radius': radius,
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'type': valid_categories[category],
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'key': api_key
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}
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all_places = []
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page_token = None
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try:
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for _ in range(3): # Max 3 pages
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if page_token:
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params['pagetoken'] = page_token
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time.sleep(2.5)
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response = requests.get(base_url, params=params)
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response.raise_for_status()
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data = response.json()
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all_places.extend(data.get('results', []))
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page_token = data.get('next_page_token')
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if not page_token:
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break
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origin = (float(lat), float(lon))
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adventures = self.parse_google_places(all_places, origin)
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return Response(adventures)
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except Exception as e:
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print("Google Places API failed, falling back to Overpass:", e)
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return self.query_overpass(lat, lon, radius, category, request)
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