module EffectiveDatatables

# File lib/effective_datatables.rb, line 53
def self.authorize!(controller, action, resource)
  raise Effective::AccessDenied.new('Access Denied', action, resource) unless authorized?(controller, action, resource)
end

# File lib/effective_datatables.rb, line 40
def self.authorized?(controller, action, resource)
  @_exceptions ||= [Effective::AccessDenied, (CanCan::AccessDenied if defined?(CanCan)), (Pundit::NotAuthorizedError if defined?(Pundit))].compact

  return !!authorization_method unless authorization_method.respond_to?(:call)
  controller = controller.controller if controller.respond_to?(:controller) # Do the right thing with a view

  begin
    !!(controller || self).instance_exec((controller || self), action, resource, &authorization_method)
  rescue *@_exceptions
    false
  end
end

# File lib/effective_datatables.rb, line 82
def self.decrypt(payload)
  return unless payload.present?
  return payload if payload.kind_of?(Hash)

  attributes = message_encrypter.decrypt_and_verify(payload)

  raise 'invalid decoded inline payload' unless attributes.kind_of?(Hash)

  attributes.symbolize_keys
end

# File lib/effective_datatables.rb, line 78
def self.encrypt(attributes)
  payload = message_encrypter.encrypt_and_sign(attributes)
end

# File lib/effective_datatables.rb, line 57
def self.find(id, attributes = nil)
  id = id.to_s.gsub(/-\d+\z/, '').gsub('-', '/')
  klass = (id.classify.safe_constantize || id.classify.pluralize.safe_constantize)
  attributes = decrypt(attributes) || {}

  klass.try(:new, **attributes) || raise('unable to find datatable')
end

# File lib/effective_datatables.rb, line 67
def self.language(locale)
  @_languages ||= {}

  locale = :en unless AVAILABLE_LOCALES.include?(locale.to_s)

  @_languages[locale] ||= begin
    path = Gem::Specification.find_by_name('effective_datatables').gem_dir + "/app/assets/javascripts/dataTables/locales/#{locale}.lang"
    JSON.parse(File.read(path)).to_json
  end
end

# File lib/effective_datatables.rb, line 93
def self.message_encrypter
  key = (Rails.application.secret_key_base.presence rescue nil)
  key ||= (Rails.application.try(:credentials).try(:secret_key_base).presence rescue nil)
  key ||= (Rails.application.try(:secrets).try(:secret_key_base).presence rescue nil)
  key ||= 10.times.map { "".hash.to_s }.join

  ActiveSupport::MessageEncryptor.new(key.to_s.first(32))
end

# File lib/effective_datatables.rb, line 36
def self.setup
  yield self
end