04-visits-mixins.txt

Check results
=============



Code
=============
import re
import requests
from django.conf import settings


def Directions(*args, **kwargs):
    """
    Posts coordinates to google API and gets json response - directions
    created by following tutorial:
    https://www.youtube.com/watch?v=wCn8WND-JpU&t=8s
    """
    lat_a = kwargs.get("lat_a")
    long_a = kwargs.get("long_a")
    lat_b = kwargs.get("lat_b")
    long_b = kwargs.get("long_b")

    origin = f'{lat_a},{long_a}'
    destination = f'{lat_b},{long_b}'

    result = requests.get(
                    'https://maps.googleapis.com/maps/api/directions/json?',
                    params={
                        'origin': origin,
                        'destination': destination,
                        "key": settings.GOOGLE_API_KEY
                    })

    directions = result.json()

    if directions["status"] == "OK":

        route = directions["routes"][0]["legs"][0]
        # this is a string with full address, postcode can be extracted
        origin = route["start_address"]
        destination = route["end_address"]

        # change km to miles and round up to 1 decimal place
        distance = route["distance"]["value"]*0.000621371
        distance = round(distance, 1)
        # duration is displayed as a string, not number
        duration = route["duration"]["text"]

    return {
        "origin": origin,
        "destination": destination,
        "distance": distance,
        "duration": duration,
        }


def extract_postcode(googe_places_full_addr, google_directions_full_addr):
    '''
    takes a string containing full adress and postcodes and returns postcode
    only checks if postscode can be found in one of the possible matches,
    if no postcode found it returns google_places full address
    Regex from:
    https://stackoverflow.com/questions/164979/regex-for-matching-uk-postcodes
    '''
    regex = (r'([Gg][Ii][Rr] 0[Aa]{2})|((([A-Za-z][0-9]{1,2})|(([A-Za-z][A-Ha-'
             r'hJ-Yj-y][0-9]{1,2})|(([A-Za-z][0-9][A-Za-z])|([A-Za-z][A-Ha-hJ-'
             r'Yj-y][0-9][A-Za-z]?))))\s?[0-9][A-Za-z]{2})')

    matches_places = re.findall(regex, googe_places_full_addr)
    matches_directions = re.findall(regex, google_directions_full_addr)

    if len(matches_directions) == 0 and len(matches_places) == 0:
        postcode = googe_places_full_addr

    elif len(matches_places) == 0:
        list_of_matches_directions = matches_directions[0]
        postcode = list_of_matches_directions[1]

    else:
        list_of_matches_places = matches_places[0]
        postcode = list_of_matches_places[1]

    return postcode


def sum_all_miles(date, model, driver):
    '''
    takes the date of the report, filters objects in the database that match
    the date and finds the distance value and adds to the list. Than summarises
    the content of the list.
    '''
    list_of_items = model.objects.filter(
        date_of_journey=date).filter(driver=driver)
    sum_of_distances = 0

    for item in list_of_items:
        sum_of_distances = sum_of_distances + item.distance

    return sum_of_distances