debianize-mobilizon/lib/mix/tasks/mobilizon/common.ex

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Elixir
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# Portions of this file are derived from Pleroma:
# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social>
# SPDX-License-Identifier: AGPL-3.0-only
# Upstream: https://git.pleroma.social/pleroma/pleroma/blob/develop/lib/mix/tasks/pleroma/common.ex
defmodule Mix.Tasks.Mobilizon.Common do
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@moduledoc """
Common functions to be reused in mix tasks
"""
require Logger
def start_mobilizon do
if mix_task?(), do: Mix.Task.run("app.config")
unless System.get_env("DEBUG") || Application.fetch_env!(:mobilizon, :env) == :test do
Logger.configure(level: :error)
end
Application.put_env(:phoenix, :serve_endpoints, false, persistent: true)
{:ok, _} = Application.ensure_all_started(:mobilizon)
end
def get_option(options, opt, prompt, defval \\ nil, defname \\ nil) do
Keyword.get(options, opt) || shell_prompt(prompt, defval, defname)
end
def shell_prompt(prompt, defval \\ nil, defname \\ nil) do
prompt_message = "#{prompt} [#{defname || defval}] "
input =
if mix_shell?(),
do: Mix.shell().prompt(prompt_message),
else: :io.get_line(prompt_message)
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case input do
"\n" ->
case defval do
nil ->
shell_prompt(prompt, defval, defname)
defval ->
defval
end
input ->
String.trim(input)
end
end
def shell_yes?(message) do
if mix_shell?(),
do: Mix.shell().yes?("Continue?"),
else: shell_prompt(message, "Continue?") in ~w(Yn Y y)
end
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@spec shell_info(String.t()) :: :ok
def shell_info(message) do
if mix_shell?(),
do: Mix.shell().info(message),
else: IO.puts(message)
end
@spec shell_error(String.t()) :: :ok
def shell_error(message) do
if mix_shell?(),
do: Mix.shell().error(message),
else: IO.puts(:stderr, message)
end
@doc "Performs a safe check whether `Mix.shell/0` is available (does not raise if Mix is not loaded)"
def mix_shell?, do: :erlang.function_exported(Mix, :shell, 0)
def mix_task?, do: :erlang.function_exported(Mix.Task, :run, 1)
def escape_sh_path(path) do
~S(') <> String.replace(path, ~S('), ~S(\')) <> ~S(')
end
@type task_module :: atom
@doc """
Gets the shortdoc for the given task `module`.
Returns the shortdoc or `nil`.
"""
@spec shortdoc(task_module) :: String.t() | nil
def shortdoc(module) when is_atom(module) do
case List.keyfind(module.__info__(:attributes), :shortdoc, 0) do
{:shortdoc, [shortdoc]} -> shortdoc
_ -> nil
end
end
def show_subtasks_for_module(module_name) do
tasks = list_subtasks_for_module(module_name)
max = Enum.reduce(tasks, 0, fn {name, _doc}, acc -> max(byte_size(name), acc) end)
Enum.each(tasks, fn {name, doc} ->
shell_info("#{String.pad_trailing(name, max + 2)} # #{doc}")
end)
end
@spec list_subtasks_for_module(atom()) :: list({String.t(), String.t()})
def list_subtasks_for_module(module_name) do
Application.load(:mobilizon)
{:ok, modules} = :application.get_key(:mobilizon, :modules)
module_name = to_string(module_name)
modules
|> Enum.filter(fn module ->
String.starts_with?(to_string(module), to_string(module_name)) &&
to_string(module) != to_string(module_name)
end)
|> Enum.map(&format_module/1)
end
defp format_module(module) do
{format_name(to_string(module)), shortdoc(module)}
end
defp format_name("Elixir.Mix.Tasks.Mobilizon." <> task_name) do
String.downcase(task_name)
end
end