module Hicube
  class ApplicationController < ActionController::Base
    # Prevent CSRF attacks by raising an exception.
    # For APIs, you may want to use :null_session instead.
    protect_from_forgery with: :exception

    before_action :configure_devise_permitted_params

    #around_filter :audit_trail
    before_filter :initialise_locale

    before_filter :initialise_account_settings

    helper :all 
    
    helper_method :app_name

    #
    # Constants
    #

    FLASH_TYPES = [
      :debug,
      :error,
      :notice,
      :alert,
      :success,
      :warning,
    ]

    #
    # Public Class Methods
    #
    public

    #
    # Public Instance Methods
    #
    public

    def after_sign_in_path_for(resource)
      return request.env['omniauth.origin'] || stored_location_for(resource) || '/hicube/pages'
    end

    # Generate a notification message.
    def notify(type, message, options = {})
      options[:now] ||= false

      # Convert and cleanup.
      type = type.to_s.downcase.to_sym

      # Sanity check for type.
      unless FLASH_TYPES.include?(type)
        raise ArgumentError, "Invalid value for argument type: #{type}, expected one of: #{FLASH_TYPES.to_sentence}."
      end

      logger.info("FLASH (#{options.inspect}) #{type.to_s.upcase}: #{message}")

      if options[:now] == true
        flash.now[type] ||= []
        flash.now[type] << message
      else
        flash[type] ||= []
        flash[type] << message
      end

      logger.debug("DEBUG: FLASH #{flash.inspect}")

      return true
    end

    def notify_now(type, message, options = {})
      options[:now] = true
      notify(type, message, options)
    end

    #
    # Protected Instance Methods
    #
    protected

    #
    # Private Instance Methods
    #
    private

    def app_name
      t('app.name') || Rails.application.class.to_s.split("::").first 
    end

    def action_controller_helpers
      return ActionController::Base.helpers
    end

    def audit_trail
      # Create a shallow copy only so be careful.
      local_params = params.clone

      # Strip out redundant, useless or other unwanted parameters.
      local_params.reject!{ |k,v| %w(action authenticity_token eid controller).include?(k) }

      # Filter sensitive and/or useless parameters.
      %w(password password_confirmation).each do |k|
        local_params[k] = '***' if local_params.has_key?(k)
      end

      # Filter sensitive and/or useless parameters.
      %w(user).each do |j|
        if local_params.has_key?(j)
          local_params[j] = local_params[j].clone
          %w(password password_confirmation).each do |k|
            local_params[j][k] = '***' if local_params[j].has_key?(k)
          end
        end
      end

      # Create an audit trail for the request.
      # AUDIT_LOG.info("ACCESS") { "REQUEST::#{request.method}::#{params[:controller]}##{params[:action]}::#{request.remote_ip}::#{request.fullpath.split('?')[0]}::#{local_params.inspect}" }

      # Proceed as normal.
      yield

      # Create an audit trail for the response.
      # AUDIT_LOG.info("ACCESS") { "RESPONSE::#{request.method}::#{params[:controller]}##{params[:action]}::#{response.status}::#{response.content_type}::#{response.location || '-'}" }

    rescue => e
      # Log the exception and then re-raise so it can be handled as normal.
      # AUDIT_LOG.error("EXCEPTION") { "#{request.remote_ip}::#{request.method}::#{params[:controller]}##{params[:action]}::#{e.class.to_s}::#{e.message}::#{e.backtrace[0...5]}" }
      raise
    end

    def initialise_account_settings
      Rails.application.configure do 
        GA.tracker = Hicube::Account.first.ga unless Hicube::Account.first.nil? or Hicube::Account.first.ga.nil?
      end if Rails.env.production? or Rails.env.staging?
    end

    def initialise_locale
      # if params[:locale] is nil then I18n.default_locale will be used.
      I18n.locale = params[:locale]
    end

    def respond(http_status, response, options = {})
      respond_to do |format|
        format.json { render json: response, status: http_status }
        format.xml  { render xml:  response, root: :response, status: http_status }
      end
    end

    def respond_with_success(options = {})
      http_status = options[:http_status] || :ok

      response = {}
      response[:status] = options[:status] || 'OK'
      response.merge!(options[:response]) if options.has_key?(:response)

      respond(http_status, response)
    end

    def respond_with_error(http_status, options = {})
      response = {}
      response[:status] = options[:status] || 'ERROR'
      response[:error] = {}
      response[:error][:code] = options[:code] || http_status.to_s.dasherize
      response[:error][:message] = options[:message]
      response.merge!(options[:response]) if options.has_key?(:response)

      respond(http_status, response)
    end

    protected

    def configure_devise_permitted_params
      unless params
        devise_parameter_sanitizer.for(:sign_up) << :name if params[:controller].include? 'devise'
        devise_parameter_sanitizer.for(:sign_in) { |u| u.permit(:name, :email) } if params[:controller].include? 'devise'
      end
    end

  end
end