# Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Upload.Filter.Mogrifun do
@behaviour Pleroma.Upload.Filter
+ alias Pleroma.Upload.Filter
+
+ @moduledoc """
+ This module is just an example of an Upload filter. It's not supposed to be used in production.
+ """
@filters [
{"implode", "1"},
[{"fill", "yellow"}, {"tint", "40"}]
]
+ @spec filter(Pleroma.Upload.t()) :: {:ok, :filtered | :noop} | {:error, String.t()}
def filter(%Pleroma.Upload{tempfile: file, content_type: "image" <> _}) do
- filter = Enum.random(@filters)
-
- file
- |> Mogrify.open()
- |> mogrify_filter(filter)
- |> Mogrify.save(in_place: true)
-
- :ok
- end
-
- def filter(_), do: :ok
-
- defp mogrify_filter(mogrify, [filter | rest]) do
- mogrify
- |> mogrify_filter(filter)
- |> mogrify_filter(rest)
+ try do
+ Filter.Mogrify.do_filter(file, [Enum.random(@filters)])
+ {:ok, :filtered}
+ rescue
+ e in ErlangError ->
+ {:error, "#{__MODULE__}: #{inspect(e)}"}
+ end
end
- defp mogrify_filter(mogrify, []), do: mogrify
-
- defp mogrify_filter(mogrify, {action, options}) do
- Mogrify.custom(mogrify, action, options)
- end
-
- defp mogrify_filter(mogrify, string) when is_binary(string) do
- Mogrify.custom(mogrify, string)
- end
+ def filter(_), do: {:ok, :noop}
end