defmodule Mobilizon.Service.Geospatial.Addok do @moduledoc """ [Addok](https://github.com/addok/addok) backend. """ alias Mobilizon.Addresses.Address alias Mobilizon.Service.Geospatial.Provider require Logger @behaviour Provider @endpoint Application.get_env(:mobilizon, __MODULE__) |> get_in([:endpoint]) @impl Provider @doc """ Addok implementation for `c:Mobilizon.Service.Geospatial.Provider.geocode/3`. """ @spec geocode(String.t(), keyword()) :: list(Address.t()) def geocode(lon, lat, options \\ []) do url = build_url(:geocode, %{lon: lon, lat: lat}, options) Logger.debug("Asking addok for addresses with #{url}") with {:ok, %HTTPoison.Response{status_code: 200, body: body}} <- HTTPoison.get(url), {:ok, %{"features" => features}} <- Poison.decode(body) do process_data(features) end end @impl Provider @doc """ Addok implementation for `c:Mobilizon.Service.Geospatial.Provider.search/2`. """ @spec search(String.t(), keyword()) :: list(Address.t()) def search(q, options \\ []) do url = build_url(:search, %{q: q}, options) Logger.debug("Asking addok for addresses with #{url}") with {:ok, %HTTPoison.Response{status_code: 200, body: body}} <- HTTPoison.get(url), {:ok, %{"features" => features}} <- Poison.decode(body) do process_data(features) end end @spec build_url(atom(), map(), list()) :: String.t() defp build_url(method, args, options) do limit = Keyword.get(options, :limit, 10) coords = Keyword.get(options, :coords, nil) endpoint = Keyword.get(options, :endpoint, @endpoint) case method do :geocode -> "#{endpoint}/reverse/?lon=#{args.lon}&lat=#{args.lat}&limit=#{limit}" :search -> url = "#{endpoint}/search/?q=#{URI.encode(args.q)}&limit=#{limit}" if is_nil(coords), do: url, else: url <> "&lat=#{coords.lat}&lon=#{coords.lon}" end end defp process_data(features) do features |> Enum.map(fn %{"geometry" => geometry, "properties" => properties} -> %Address{ country: Map.get(properties, "country"), locality: Map.get(properties, "city"), region: Map.get(properties, "state"), description: Map.get(properties, "name") || street_address(properties), floor: Map.get(properties, "floor"), geom: geometry |> Map.get("coordinates") |> Provider.coordinates(), postal_code: Map.get(properties, "postcode"), street: properties |> street_address() } end) end defp street_address(properties) do if Map.has_key?(properties, "housenumber") do Map.get(properties, "housenumber") <> " " <> Map.get(properties, "street") else Map.get(properties, "street") end end end