mobilizon/lib/service/geospatial/map_quest.ex

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defmodule Mobilizon.Service.Geospatial.MapQuest do
@moduledoc """
[MapQuest](https://developer.mapquest.com/documentation) backend.
## Options
In addition to the [the shared options](Mobilizon.Service.Geospatial.Provider.html#module-shared-options),
MapQuest methods support the following options:
* `:open_data` Whether to use [Open Data or Licenced Data](https://developer.mapquest.com/documentation/open/).
Defaults to `true`
"""
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alias Mobilizon.Addresses.Address
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alias Mobilizon.Service.Geospatial.Provider
alias Mobilizon.Service.HTTP.GeospatialClient
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require Logger
@behaviour Provider
@api_key_missing_message "API Key required to use MapQuest"
@impl Provider
@doc """
MapQuest implementation for `c:Mobilizon.Service.Geospatial.Provider.geocode/3`.
"""
@spec geocode(String.t(), keyword()) :: list(Address.t())
def geocode(lon, lat, options \\ []) do
api_key = Keyword.get(options, :api_key, api_key())
limit = Keyword.get(options, :limit, 10)
open_data = Keyword.get(options, :open_data, true)
prefix = if open_data, do: "open", else: "www"
if is_nil(api_key), do: raise(ArgumentError, message: @api_key_missing_message)
with {:ok, %{status: 200, body: body}} <-
GeospatialClient.get(
"https://#{prefix}.mapquestapi.com/geocoding/v1/reverse?key=#{api_key}&location=#{lat},#{lon}&maxResults=#{limit}"
),
%{"results" => results, "info" => %{"statuscode" => 0}} <- body do
results |> Enum.map(&process_data/1)
else
{:ok, %{status: 403, body: err}} ->
raise(ArgumentError, message: err)
end
end
@impl Provider
@doc """
MapQuest implementation for `c:Mobilizon.Service.Geospatial.Provider.search/2`.
"""
@spec search(String.t(), keyword()) :: list(Address.t())
def search(q, options \\ []) do
limit = Keyword.get(options, :limit, 10)
api_key = Keyword.get(options, :api_key, api_key())
open_data = Keyword.get(options, :open_data, true)
prefix = if open_data, do: "open", else: "www"
if is_nil(api_key), do: raise(ArgumentError, message: @api_key_missing_message)
url =
"https://#{prefix}.mapquestapi.com/geocoding/v1/address?key=#{api_key}&location=#{URI.encode(q)}&maxResults=#{limit}"
Logger.debug("Asking MapQuest for addresses with #{url}")
with {:ok, %{status: 200, body: body}} <- GeospatialClient.get(url),
%{"results" => results, "info" => %{"statuscode" => 0}} <- body do
results |> Enum.map(&process_data/1)
else
{:ok, %{status: 403, body: err}} ->
raise(ArgumentError, message: err)
end
end
defp process_data(
%{
"locations" => addresses,
"providedLocation" => %{"latLng" => %{"lat" => lat, "lng" => lng}}
} = _body
) do
case addresses do
[] -> nil
addresses -> addresses |> hd |> produce_address(lat, lng)
end
end
defp process_data(%{"locations" => addresses}) do
case addresses do
[] -> nil
addresses -> addresses |> hd |> produce_address()
end
end
defp produce_address(%{"latLng" => %{"lat" => lat, "lng" => lng}} = address) do
produce_address(address, lat, lng)
end
defp produce_address(address, lat, lng) do
coordinates = Provider.coordinates([lng, lat])
%Address{
country: Map.get(address, "adminArea1"),
locality: Map.get(address, "adminArea5"),
region: Map.get(address, "adminArea3"),
description: Map.get(address, "street"),
geom: coordinates,
timezone: Provider.timezone(coordinates),
postal_code: Map.get(address, "postalCode"),
street: Map.get(address, "street")
}
end
defp api_key do
Application.get_env(:mobilizon, __MODULE__) |> get_in([:api_key])
end
end