mobilizon/lib/service/address/address.ex

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Elixir
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defmodule Mobilizon.Service.Address do
@moduledoc """
Module to render an `Mobilizon.Addresses.Address` struct to a string
"""
alias Mobilizon.Addresses.Address, as: AddressModel
@type address :: %{name: String.t(), alternative_name: String.t()}
@spec render_address(AddressModel.t()) :: String.t() | no_return
def render_address(%AddressModel{} = address) do
%{name: name, alternative_name: alternative_name} = render_names(address)
cond do
defined?(alternative_name) && defined?(name) ->
"#{name}, #{alternative_name}"
defined?(name) ->
name
defined?(alternative_name) ->
alternative_name
true ->
raise ArgumentError, message: "Invalid address"
end
end
@spec render_names(AddressModel.t()) :: address()
def render_names(%AddressModel{type: nil} = address) do
render_names(%AddressModel{address | type: "house"})
end
def render_names(%AddressModel{
type: type,
description: description,
postal_code: postal_code,
locality: locality,
country: country
})
when type in ["house", "street", "secondary"] do
%{
name: description,
alternative_name: [postal_code, locality, country] |> Enum.filter(& &1) |> Enum.join(", ")
}
end
def render_names(%AddressModel{
type: type,
description: description,
postal_code: postal_code,
locality: locality,
country: country
})
when type in ["zone", "city", "administrative"] do
%{
name: if(defined?(postal_code), do: "#{description} (#{postal_code})", else: description),
alternative_name:
[locality, country]
|> Enum.filter(& &1)
|> Enum.filter(&(&1 != description))
|> Enum.join(", ")
}
end
def render_names(%AddressModel{
description: description,
street: street,
region: region,
locality: locality,
country: country
}) do
alternative_name =
cond do
defined?(street) ->
if defined?(locality), do: "#{street} (#{locality})", else: street
defined?(locality) ->
"#{locality}, #{region}, #{country}"
defined?(region) ->
"#{region}, #{country}"
defined?(country) ->
country
true ->
nil
end
%{name: description, alternative_name: alternative_name}
end
defp defined?(string) when is_binary(string), do: String.trim(string) != ""
defp defined?(_), do: false
end