discourse-plugin-manager

#!/usr/bin/env ruby

require "curses"
require "fileutils"

plugin_dir = File.expand_path("~/Source/discourse/plugins")
disabled_plugin_dir = File.expand_path("~/Source/discourse-plugins")

Curses.init_screen
Curses.noecho
Curses.cbreak
Curses.stdscr.keypad = true
Curses.curs_set(0)

begin
  selected = 0

  while true
    Curses.clear
    Curses.setpos(0, 0)
    Curses.addstr("Discourse Plugin Manager")
    Curses.setpos(1, 0)
    Curses.addstr("Enabled plugins:")

    excluded_plugins =
      `cd #{plugin_dir}/../ && git ls-files | grep ^plugins | awk -F '/' '{ print $2 }' | uniq`.split(
        "\n"
      ).map(&:strip)

    enabled_plugins =
      Dir
        .entries(plugin_dir)
        .sort
        .select do |entry|
          plugin_path = File.join(plugin_dir, entry)
          !entry.start_with?(".") && File.directory?(plugin_path) &&
            !excluded_plugins.include?(entry.to_s)
        end

    disabled_plugins =
      Dir
        .entries(disabled_plugin_dir)
        .sort
        .reject { |entry| entry.start_with?(".") }

    enabled_plugins.each_with_index do |plugin, idx|
      Curses.setpos(idx + 2, 2)
      Curses.attron(Curses::A_REVERSE) if idx == selected
      Curses.addstr(plugin)
      Curses.attroff(Curses::A_REVERSE) if idx == selected
    end

    Curses.setpos(enabled_plugins.length + 3, 0)
    Curses.addstr("Disabled plugins:")

    disabled_plugins.each_with_index do |plugin, idx|
      Curses.setpos(idx + enabled_plugins.length + 4, 2)
      if idx + enabled_plugins.length + 1 == selected
        Curses.attron(Curses::A_REVERSE)
      end
      Curses.addstr(plugin)
      if idx + enabled_plugins.length + 1 == selected
        Curses.attroff(Curses::A_REVERSE)
      end
    end

    key = Curses.getch

    case key
    when Curses::KEY_DOWN
      selected =
        (selected + 1) % (enabled_plugins.length + disabled_plugins.length + 1)
    when Curses::KEY_UP
      selected =
        (selected - 1) % (enabled_plugins.length + disabled_plugins.length + 1)
    when "q"
      break
    when ?\n.ord
      if selected < enabled_plugins.length
        plugin_to_disable = enabled_plugins[selected]
        FileUtils.mv(
          File.join(plugin_dir, plugin_to_disable),
          disabled_plugin_dir
        )
      else
        plugin_to_enable =
          disabled_plugins[selected - enabled_plugins.length - 1]
        FileUtils.mv(
          File.join(disabled_plugin_dir, plugin_to_enable),
          plugin_dir
        )
      end
    end
  end
ensure
  Curses.close_screen
end