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` """ alias Mobilizon.Addresses.Address alias Mobilizon.Service.Geospatial.Provider require Logger @behaviour Provider @api_key Application.get_env(:mobilizon, __MODULE__) |> get_in([:api_key]) @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, %HTTPoison.Response{status_code: 200, body: body}} <- HTTPoison.get( "https://#{prefix}.mapquestapi.com/geocoding/v1/reverse?key=#{api_key}&location=#{ lat },#{lon}&maxResults=#{limit}" ), {:ok, %{"results" => results, "info" => %{"statuscode" => 0}}} <- Poison.decode(body) do results |> Enum.map(&process_data/1) else {:ok, %HTTPoison.Response{status_code: 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, %HTTPoison.Response{status_code: 200, body: body}} <- HTTPoison.get(url), {:ok, %{"results" => results, "info" => %{"statuscode" => 0}}} <- Poison.decode(body) do results |> Enum.map(&process_data/1) else {:ok, %HTTPoison.Response{status_code: 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 %Address{ country: Map.get(address, "adminArea1"), locality: Map.get(address, "adminArea5"), region: Map.get(address, "adminArea3"), description: Map.get(address, "street"), floor: Map.get(address, "floor"), geom: [lng, lat] |> Provider.coordinates(), postal_code: Map.get(address, "postalCode"), street: Map.get(address, "street") } end end