api_v1.4/hub_api/geolocation/reverse.py

44 lines
1.5 KiB
Python

import json
import math
from pathlib import Path
from flask import Response, request
from flask.views import MethodView
from hub_api.config import Config
from hub_api.helpers.session_helper import refresh_session
class Reverse(MethodView, Config):
def __init__(self):
super().__init__()
self._reverse_path = Path(Path(__file__).parent.parent / 'data/cities15000.txt').resolve()
def get(self, latitude: float, longitude: float):
session_id = request.headers.get('session_id', None)
token = request.headers.get('token', None)
application_uuid = request.headers.get('application_uuid', None)
_session = refresh_session(session_id, token, application_uuid)
if _session is None:
return Response(json.dumps({'error': 'unauthorized'}), status=403)
token = {'token': _session['token']}
latitude = float(latitude)
longitude = float(longitude)
distance = math.inf
country = 'unknown'
city = 'unknown'
with open(self._reverse_path, 'r') as f:
for line_number, line in enumerate(f):
fields = line.split('\t')
file_city_name = fields[1]
file_latitude = float(fields[4])
file_longitude = float(fields[5])
file_country_code = fields[8]
new_distance = math.sqrt(pow((latitude-file_latitude),2) + pow((longitude-file_longitude),2))
if distance > new_distance:
distance = new_distance
country = file_country_code
city = file_city_name
return Response(json.dumps({'country': country, 'city':city}), status=200, headers=token)