forked from potsda.mn/mobilizon
78 lines
2.5 KiB
Elixir
78 lines
2.5 KiB
Elixir
defmodule Mobilizon.Service.Geospatial.Provider do
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@moduledoc """
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Provider Behaviour for Geospatial stuff.
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## Supported backends
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* `Mobilizon.Service.Geospatial.Nominatim` [🔗](https://wiki.openstreetmap.org/wiki/Nominatim)
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* `Mobilizon.Service.Geospatial.Photon` [🔗](https://photon.komoot.de)
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* `Mobilizon.Service.Geospatial.Addok` [🔗](https://github.com/addok/addok)
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* `Mobilizon.Service.Geospatial.MapQuest` [🔗](https://developer.mapquest.com/documentation/open/)
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* `Mobilizon.Service.Geospatial.GoogleMaps` [🔗](https://developers.google.com/maps/documentation/geocoding/intro)
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## Shared options
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* `:user_agent` User-Agent string to send to the backend. Defaults to `"Mobilizon"`
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* `:lang` Lang in which to prefer results. Used as a request parameter or
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through an `Accept-Language` HTTP header. Defaults to `"en"`.
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* `:country_code` An ISO 3166 country code. String or `nil`
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* `:limit` Maximum limit for the number of results returned by the backend.
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Defaults to `10`
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* `:api_key` Allows to override the API key (if the backend requires one) set
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inside the configuration.
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* `:endpoint` Allows to override the endpoint set inside the configuration.
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"""
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alias Mobilizon.Addresses.Address
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@doc """
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Get an address from longitude and latitude coordinates.
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## Options
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Most backends implement all of [the shared options](#module-shared-options).
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## Examples
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iex> geocode(48.11, -1.77)
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%Address{}
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"""
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@callback geocode(longitude :: number, latitude :: number, options :: keyword) :: [Address.t()]
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@doc """
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Search for an address
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## Options
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In addition to [the shared options](#module-shared-options), `c:search/2` also
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accepts the following options:
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* `coords` Map of coordinates (ex: `%{lon: 48.11, lat: -1.77}`) allowing to
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give a geographic priority to the search. Defaults to `nil`.
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## Examples
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iex> search("10 rue Jangot")
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%Address{}
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"""
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@callback search(address :: String.t(), options :: keyword) :: [Address.t()]
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@doc """
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Returns a `Geo.Point` for given coordinates
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"""
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@spec coordinates([number], number) :: Geo.Point.t()
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def coordinates(coords, srid \\ 4326)
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def coordinates([x, y], srid) when is_number(x) and is_number(y) do
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%Geo.Point{coordinates: {x, y}, srid: srid}
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end
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def coordinates([x, y], srid) when is_bitstring(x) and is_bitstring(y) do
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%Geo.Point{coordinates: {String.to_float(x), String.to_float(y)}, srid: srid}
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end
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@spec coordinates(any) :: nil
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def coordinates(_, _), do: nil
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end
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