distraction.party/lib/pleroma/frontend.ex

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# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Frontend do
alias Pleroma.Config
require Logger
def install(name, opts \\ []) do
frontend_info = %{
"ref" => opts[:ref],
"build_url" => opts[:build_url],
"build_dir" => opts[:build_dir]
}
frontend_info =
[:frontends, :available, name]
|> Config.get(%{})
|> Map.merge(frontend_info, fn _key, config, cmd ->
# This only overrides things that are actually set
cmd || config
end)
ref = frontend_info["ref"]
unless ref do
raise "No ref given or configured"
end
dest = Path.join([dir(), name, ref])
label = "#{name} (#{ref})"
tmp_dir = Path.join(dir(), "tmp")
with {_, :ok} <-
{:download_or_unzip, download_or_unzip(frontend_info, tmp_dir, opts[:file])},
Logger.info("Installing #{label} to #{dest}"),
:ok <- install_frontend(frontend_info, tmp_dir, dest) do
File.rm_rf!(tmp_dir)
Logger.info("Frontend #{label} installed to #{dest}")
else
{:download_or_unzip, _} ->
Logger.info("Could not download or unzip the frontend")
{:error, "Could not download or unzip the frontend"}
_e ->
Logger.info("Could not install the frontend")
{:error, "Could not install the frontend"}
end
end
def dir(opts \\ []) do
if is_nil(opts[:static_dir]) do
Pleroma.Config.get!([:instance, :static_dir])
else
opts[:static_dir]
end
|> Path.join("frontends")
end
defp download_or_unzip(frontend_info, temp_dir, nil),
do: download_build(frontend_info, temp_dir)
defp download_or_unzip(_frontend_info, temp_dir, file) do
with {:ok, zip} <- File.read(Path.expand(file)) do
unzip(zip, temp_dir)
end
end
def unzip(zip, dest) do
with {:ok, unzipped} <- :zip.unzip(zip, [:memory]) do
File.rm_rf!(dest)
File.mkdir_p!(dest)
Enum.each(unzipped, fn {filename, data} ->
path = filename
new_file_path = Path.join(dest, path)
new_file_path
|> Path.dirname()
|> File.mkdir_p!()
File.write!(new_file_path, data)
end)
end
end
defp download_build(frontend_info, dest) do
Logger.info("Downloading pre-built bundle for #{frontend_info["name"]}")
url = String.replace(frontend_info["build_url"], "${ref}", frontend_info["ref"])
with {:ok, %{status: 200, body: zip_body}} <-
Pleroma.HTTP.get(url, [], pool: :media, recv_timeout: 120_000) do
unzip(zip_body, dest)
else
{:error, e} -> {:error, e}
e -> {:error, e}
end
end
defp install_frontend(frontend_info, source, dest) do
from = frontend_info["build_dir"] || "dist"
File.rm_rf!(dest)
File.mkdir_p!(dest)
File.cp_r!(Path.join([source, from]), dest)
:ok
end
end