133 lines
4.0 KiB
Elixir
133 lines
4.0 KiB
Elixir
defmodule Mobilizon.Service.Geospatial.Pelias do
|
|
@moduledoc """
|
|
[Pelias](https://pelias.io) backend.
|
|
|
|
Doesn't provide type of POI.
|
|
"""
|
|
|
|
alias Mobilizon.Addresses.Address
|
|
alias Mobilizon.Service.Geospatial.Provider
|
|
alias Mobilizon.Config
|
|
|
|
require Logger
|
|
|
|
@behaviour Provider
|
|
|
|
@endpoint Application.get_env(:mobilizon, __MODULE__) |> get_in([:endpoint])
|
|
|
|
@impl Provider
|
|
@doc """
|
|
Pelias implementation for `c:Mobilizon.Service.Geospatial.Provider.geocode/3`.
|
|
"""
|
|
@spec geocode(number(), number(), keyword()) :: list(Address.t())
|
|
def geocode(lon, lat, options \\ []) do
|
|
user_agent = Keyword.get(options, :user_agent, Config.instance_user_agent())
|
|
headers = [{"User-Agent", user_agent}]
|
|
url = build_url(:geocode, %{lon: lon, lat: lat}, options)
|
|
Logger.debug("Asking Pelias for reverse geocoding with #{url}")
|
|
|
|
with {:ok, %HTTPoison.Response{status_code: 200, body: body}} <-
|
|
HTTPoison.get(url, headers),
|
|
{:ok, %{"features" => features}} <- Poison.decode(body) do
|
|
process_data(features)
|
|
else
|
|
_ -> []
|
|
end
|
|
end
|
|
|
|
@impl Provider
|
|
@doc """
|
|
Pelias implementation for `c:Mobilizon.Service.Geospatial.Provider.search/2`.
|
|
"""
|
|
@spec search(String.t(), keyword()) :: list(Address.t())
|
|
def search(q, options \\ []) do
|
|
user_agent = Keyword.get(options, :user_agent, Config.instance_user_agent())
|
|
headers = [{"User-Agent", user_agent}]
|
|
url = build_url(:search, %{q: q}, options)
|
|
Logger.debug("Asking Pelias for addresses with #{url}")
|
|
|
|
with {:ok, %HTTPoison.Response{status_code: 200, body: body}} <-
|
|
HTTPoison.get(url, headers),
|
|
{:ok, %{"features" => features}} <- Poison.decode(body) do
|
|
process_data(features)
|
|
else
|
|
_ -> []
|
|
end
|
|
end
|
|
|
|
@spec build_url(atom(), map(), list()) :: String.t()
|
|
defp build_url(method, args, options) do
|
|
limit = Keyword.get(options, :limit, 10)
|
|
lang = Keyword.get(options, :lang, "en")
|
|
coords = Keyword.get(options, :coords, nil)
|
|
endpoint = Keyword.get(options, :endpoint, @endpoint)
|
|
country_code = Keyword.get(options, :country_code)
|
|
|
|
url =
|
|
case method do
|
|
:search ->
|
|
url =
|
|
"#{endpoint}/v1/autocomplete?text=#{URI.encode(args.q)}&lang=#{lang}&size=#{limit}"
|
|
|
|
if is_nil(coords),
|
|
do: url,
|
|
else: url <> "&focus.point.lat=#{coords.lat}&focus.point.lon=#{coords.lon}"
|
|
|
|
:geocode ->
|
|
"#{endpoint}/v1/reverse?point.lon=#{args.lon}&point.lat=#{args.lat}"
|
|
end
|
|
|
|
if is_nil(country_code), do: url, else: "#{url}&boundary.country=#{country_code}"
|
|
end
|
|
|
|
defp process_data(features) do
|
|
features
|
|
|> Enum.map(fn %{
|
|
"geometry" => %{"coordinates" => coordinates},
|
|
"properties" => properties
|
|
} ->
|
|
address = process_address(properties)
|
|
%Address{address | geom: Provider.coordinates(coordinates)}
|
|
end)
|
|
end
|
|
|
|
defp process_address(properties) do
|
|
%Address{
|
|
country: Map.get(properties, "country"),
|
|
locality: Map.get(properties, "locality"),
|
|
region: Map.get(properties, "region"),
|
|
description: Map.get(properties, "name"),
|
|
postal_code: Map.get(properties, "postalcode"),
|
|
street: street_address(properties),
|
|
origin_id: "pelias:#{Map.get(properties, "id")}",
|
|
type: get_type(properties)
|
|
}
|
|
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
|
|
|
|
@administrative_layers [
|
|
"neighbourhood",
|
|
"borough",
|
|
"localadmin",
|
|
"locality",
|
|
"county",
|
|
"macrocounty",
|
|
"region",
|
|
"macroregion",
|
|
"dependency"
|
|
]
|
|
|
|
defp get_type(%{"layer" => layer}) when layer in @administrative_layers, do: "administrative"
|
|
defp get_type(%{"layer" => "address"}), do: "house"
|
|
defp get_type(%{"layer" => "street"}), do: "street"
|
|
defp get_type(%{"layer" => "venue"}), do: "venue"
|
|
defp get_type(%{"layer" => _}), do: nil
|
|
end
|