module SimpleAuth
  # Add a shortcut to SimpleAuth::Config
  def self.setup(&block)
    yield SimpleAuth::Config if block_given?
  end

  class Config
    # Automatically remove all session values that start with your model name.
    #
    # When an existing session is destroyed or a new session is created,
    # SimpleAuth will remove the record id stored as <tt>#{SimpleAuth::Config.model}</tt>.
    #
    # Additionally, you can enable this option to remove any other key composed by
    # <tt>#{SimpleAuth::Config.model}_*</tt>.
    #
    cattr_accessor :wipeout_session
    @@wipeout_session = false

    # Generate the password hash. The specified block should expected
    # the plain password and the password hash as block parameters.
    cattr_accessor :crypter
    @@crypter = proc do |password, salt|
      Digest::SHA256.hexdigest [password, salt].join("--")
    end

    # Generate the password salt. The specified block should expect
    # the ActiveRecord instance as block parameter.
    cattr_accessor :salt
    @@salt = proc do |record|
      Digest::SHA256.hexdigest [Time.to_s, ActiveSupport::SecureRandom.hex(32)].join("--")
    end

    # Set which attributes will be used for authentication.
    cattr_accessor :credentials
    @@credentials = [:email, :login]

    # Set the user model
    cattr_accessor :model
    @@model = :user

    # Set the current controller object
    cattr_accessor :controller
    @@controller = nil

    # Set the login url
    cattr_accessor :login_url
    @@login_url = proc { login_path }

    # Logged users will be redirect to this url
    # when +redirect_logged_user+ helper is used.
    cattr_accessor :logged_url
    @@logged_url = proc { dashboard_path }

    def self.reset_session(*args) # :nodoc:
      Kernel.warn "The SimpleAuth::Config.reset_session accessor was disabled and will be removed in future versions."
    end

    class << self; alias reset_session= reset_session; end

    def self.model_class
      model.to_s.classify.constantize
    end
  end
end