spc-pleroma/lib/pleroma/plugs/instance_static.ex

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# Pleroma: A lightweight social networking server
# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Plugs.InstanceStatic do
@moduledoc """
This is a shim to call `Plug.Static` but with runtime `from` configuration.
Mountpoints are defined directly in the module to avoid calling the configuration for every request including non-static ones.
"""
@behaviour Plug
def file_path(path) do
instance_path =
Path.join(Pleroma.Config.get([:instance, :static_dir], "instance/static/"), path)
if File.exists?(instance_path) do
instance_path
else
Path.join(Application.app_dir(:pleroma, "priv/static/"), path)
end
end
@only ~w(index.html static emoji packs sounds images instance favicon.png)
def init(opts) do
opts
|> Keyword.put(:from, "__unconfigured_instance_static_plug")
|> Keyword.put(:at, "/__unconfigured_instance_static_plug")
|> Plug.Static.init()
end
for only <- @only do
at = Plug.Router.Utils.split("/")
def call(conn = %{request_path: "/" <> unquote(only) <> _}, opts) do
call_static(
conn,
opts,
unquote(at),
Pleroma.Config.get([:instance, :static_dir], "instance/static")
)
end
end
def call(conn, _) do
conn
end
defp call_static(conn, opts, at, from) do
opts =
opts
|> Map.put(:from, from)
|> Map.put(:at, at)
Plug.Static.call(conn, opts)
end
end