80 lines
2.5 KiB
Python
80 lines
2.5 KiB
Python
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from django.utils import timezone
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from django.conf import settings
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import math
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import pytz
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import datetime
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import geocoder
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KM_PER_DEGREE_LAT = 110.574
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KM_PER_DEGREE_LNG = 111.320 # At the equator
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class TimezoneChoices():
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def __iter__(self):
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for tz in pytz.all_timezones:
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yield (tz, tz)
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def get_client_ip(request):
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x_forwarded_for = request.META.get('HTTP_X_FORWARDED_FOR')
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if x_forwarded_for:
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ip = x_forwarded_for.split(',')[0]
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else:
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ip = request.META.get('REMOTE_ADDR')
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return ip
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def get_geoip(request):
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client_ip = get_client_ip(request)
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if client_ip == '127.0.0.1' or client_ip == 'localhost':
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if settings.DEBUG:
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client_ip = '8.8.8.8' # Try Google's server
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print("Client is localhost, using 8.8.8.8 for geoip instead")
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else:
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raise Exception("Client is localhost")
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g = geocoder.ip(client_ip)
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return g
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def get_bounding_box(center, radius):
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minlat = center[0]-(radius/KM_PER_DEGREE_LAT)
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maxlat = center[0]+(radius/KM_PER_DEGREE_LAT)
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minlng = center[1]-(radius/(KM_PER_DEGREE_LNG*math.cos(math.radians(center[0]))))
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maxlng = center[1]+(radius/(KM_PER_DEGREE_LNG*math.cos(math.radians(center[0]))))
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return (minlat, maxlat, minlng, maxlng)
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def distance(center1, center2):
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avglat = (center2[0] + center1[0])/2
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dlat = (center2[0] - center1[0]) * KM_PER_DEGREE_LAT
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dlng = (center2[1] - center1[1]) * (KM_PER_DEGREE_LNG*math.cos(math.radians(avglat)))
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dkm = math.sqrt((dlat*dlat) + (dlng*dlng))
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print("Distance between %s and %s is %s" % (center1, center2, dkm))
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return dkm
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def city_distance_from(ll, city):
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if city is not None and city.latitude is not None and city.longitude is not None:
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return distance((ll), (city.latitude, city.longitude))
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else:
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return 99999
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def team_distance_from(ll, team):
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if team.city is not None:
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return city_distance_from(ll, team.city)
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else:
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return 99999
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def event_distance_from(ll, event):
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if event.place is not None and event.place.latitude is not None and event.place.longitude is not None:
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return distance((ll), (event.place.latitude, event.place.longitude))
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if event.team is not None:
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return team_distance_from(ll, event.team)
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else:
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return 99999
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def searchable_distance_from(ll, searchable):
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if searchable.latitude is not None and searchable.longitude is not None:
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return distance((ll), (float(searchable.latitude), float(searchable.longitude)))
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else:
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return 99999
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