class Fusuma::Plugin::Manager

def add(plugin_class:, plugin_path:)
  return false if exist?(plugin_class: plugin_class, plugin_path: plugin_path)
  base = plugin_class.superclass.name
  plugins[base] ||= []
  plugins[base] << plugin_class
  load_paths << plugin_path
  manager = Manager.new(plugin_class)
  manager.require_siblings_from_plugin_dir
  manager.require_siblings_from_gems
end

def exist?(plugin_class:, plugin_path:)
  return false if load_paths.include?(plugin_path)
  base = plugin_class.superclass.name
  return false unless plugins[base]
  plugins[base].include?(plugin_class)
end

def initialize(plugin_class)
  @plugin_class = plugin_class
end

def load_paths
  @load_paths ||= []
end

def plugin_dir_name
  @plugin_class.name.match(/(Fusuma::.*)::/)[1].to_s.underscore
end

def plugins
  @plugins ||= {}
end

def require_base_plugins
  require_relative './base'
  require_relative './events/event'
  require_relative './inputs/input'
  require_relative './filters/filter'
  require_relative './parsers/parser'
  require_relative './buffers/buffer'
  require_relative './detectors/detector'
  require_relative './executors/executor'
end

def require_siblings_from_gems
  search_key = File.join(plugin_dir_name, '*.rb')
  Gem.find_latest_files(search_key).each do |siblings_plugin|
    next unless siblings_plugin =~ %r{fusuma-plugin-(.+).*/lib/#{plugin_dir_name}/\1_.+.rb}
    match_data = siblings_plugin.match(%r{(.*)/(.*)/lib/(.*)})
    gemspec_path = Dir.glob("#{match_data[1]}/#{match_data[2]}/*.gemspec").first
    raise "Not Found: #{match_data[1]}/#{match_data[2]}/*.gemspec" unless gemspec_path
    gemspec = Gem::Specification.load(gemspec_path)
    fusuma_gemspec_path = File.expand_path('../../../fusuma.gemspec', __dir__)
    fusuma_gemspec = Gem::Specification.load(fusuma_gemspec_path)
    if gemspec.dependencies.find { |d| d.name == 'fusuma' }&.match?(fusuma_gemspec)
      require siblings_plugin
    else
      MultiLogger.warn "#{gemspec.name} #{gemspec.version} is incompatible with running #{fusuma_gemspec.name} #{fusuma_gemspec.version}"
    end
  end
end

def require_siblings_from_plugin_dir
  search_key = File.join('../../', plugin_dir_name, '*.rb')
  Dir.glob(File.expand_path("#{__dir__}/#{search_key}")).sort.each do |siblings_plugin|
    require siblings_plugin
  end
end