plugin.rb

require_relative "environment"
require "yaml"
require "fileutils"

# Represents a Java plugin and its config file.
class Plugin

  def initialize(name)
    @name = name
  end

  def name
    @name
  end

  def load_and_save!(data_folder, jar_source, server_folder)
    if data = load!(data_folder)
      FileUtils.copy_entry("#{jar_source}", "#{server_folder}/#{name.downcase}.jar")
      save!(server_folder, data)
    else
      File.delete("#{server_folder}/#{name.downcase}.jar") rescue nil
    end
  end

  def load!(folder)
    for f in Dir.glob("#{folder}/*")
      file = f if name.downcase == File.basename(f, ".*").downcase
    end
    unless file
      puts "Loading from #{folder}..."
      return load!("#{File.dirname(folder)}/base") unless folder.include?("base")
      raise "Unable to find config #{name.downcase} in folder #{folder}"
    end
    config = if (ext = File.extname(file)) == ".yml"
      YAML.load_file(file)
    else
      {"lines" => File.read(file).to_s}
    end
    if parent = config["parent"]
      config = load!("#{File.dirname(folder)}/#{parent}").deep_merge(config)
    end
    config.merge({"ext" => ext})
  end

  def save!(folder, data)
    ext = data.delete("ext") or raise "Unable to get file extention for #{data.inspect}"
    lines = data.delete("lines")
    data.delete("parent")
    FileUtils.mkdir_p(directory = "#{folder}/#{name}")
    File.open("#{directory}/config#{ext}", "w") do |file|
      file.write(lines ? lines : data.to_yaml)
    end
  end
end