32 lines
756 B
Elixir
32 lines
756 B
Elixir
defmodule Mobilizon.Web.Upload.Filter.BlurHash do
|
|
@moduledoc """
|
|
Computes blurhash from the upload
|
|
"""
|
|
require Logger
|
|
alias Mobilizon.Web.Upload
|
|
|
|
@behaviour Mobilizon.Web.Upload.Filter
|
|
|
|
@spec filter(Upload.t()) ::
|
|
{:ok, :filtered, Upload.t()} | {:ok, :noop}
|
|
def filter(%Upload{tempfile: file, content_type: "image" <> _} = upload) do
|
|
{:ok, :filtered, %Upload{upload | blurhash: generate_blurhash(file)}}
|
|
rescue
|
|
e in ErlangError ->
|
|
Logger.warn("#{__MODULE__}: #{inspect(e)}")
|
|
{:ok, :noop}
|
|
end
|
|
|
|
def filter(_), do: {:ok, :noop}
|
|
|
|
defp generate_blurhash(file) do
|
|
case :eblurhash.magick(to_charlist(file)) do
|
|
{:ok, blurhash} ->
|
|
to_string(blurhash)
|
|
|
|
_ ->
|
|
nil
|
|
end
|
|
end
|
|
end
|