85 lines
2.1 KiB
Elixir
85 lines
2.1 KiB
Elixir
defmodule Mobilizon.Service.LanguageDetection do
|
|
@moduledoc """
|
|
Detect the language of the event
|
|
"""
|
|
alias Mobilizon.Service.Formatter.HTML
|
|
|
|
@und "und"
|
|
|
|
@paasaa_languages Paasaa.Data.languages()
|
|
|> Map.values()
|
|
|> List.flatten()
|
|
|> Enum.map(fn {lang, _val} ->
|
|
lang
|
|
end)
|
|
|
|
@allow_listed_locales Mobilizon.Cldr.known_locale_names()
|
|
|
|
@type entity_type :: :event | :comment | :post
|
|
|
|
@spec detect(entity_type(), map()) :: String.t()
|
|
def detect(:event, %{title: title} = args) do
|
|
description = Map.get(args, :description)
|
|
|
|
if is_nil(description) or description == "" do
|
|
title
|
|
|> Paasaa.detect(whitelist: allow_listed_languages())
|
|
|> normalize()
|
|
else
|
|
sanitized_description = HTML.strip_tags_and_insert_spaces(description)
|
|
|
|
"#{title}\n\n#{sanitized_description}"
|
|
|> Paasaa.detect(whitelist: allow_listed_languages())
|
|
|> normalize()
|
|
end
|
|
end
|
|
|
|
def detect(:comment, %{text: text}) do
|
|
text
|
|
|> HTML.strip_tags_and_insert_spaces()
|
|
|> Paasaa.detect(whitelist: allow_listed_languages())
|
|
|> normalize()
|
|
end
|
|
|
|
def detect(:post, %{title: title} = args) do
|
|
body = Map.get(args, :body)
|
|
|
|
if is_nil(body) or body == "" do
|
|
title
|
|
|> Paasaa.detect(whitelist: allow_listed_languages())
|
|
|> normalize()
|
|
else
|
|
sanitized_body = HTML.strip_tags_and_insert_spaces(body)
|
|
|
|
"#{title}\n\n#{sanitized_body}"
|
|
|> Paasaa.detect(whitelist: allow_listed_languages())
|
|
|> normalize()
|
|
end
|
|
end
|
|
|
|
def detect(_, _), do: @und
|
|
|
|
@spec normalize(String.t()) :: String.t()
|
|
def normalize(""), do: @und
|
|
|
|
def normalize(language) do
|
|
case Cldr.AcceptLanguage.parse(language, Mobilizon.Cldr) do
|
|
{:ok, [{_, %Cldr.LanguageTag{} = tag}]} ->
|
|
tag.language
|
|
|
|
_ ->
|
|
@und
|
|
end
|
|
end
|
|
|
|
def allow_listed_languages do
|
|
@paasaa_languages
|
|
|> Enum.map(fn lang ->
|
|
{__MODULE__.normalize(lang), lang}
|
|
end)
|
|
|> Enum.into(%{})
|
|
|> Map.take(@allow_listed_locales)
|
|
|> Map.values()
|
|
end
|
|
end
|