require 'haml'
require 'bcrypt'
require 'dynamic_form'
require 'kaminari'
require 'ransack'

require 'nifty/utils'
require 'nifty/key_value_store'
require 'nifty/attachments'
require 'nifty/dialog'

module Shoppe
  
  class Error < StandardError; end
  
  class << self
    def root
      File.expand_path('../../', __FILE__)
    end
    
    def config
      @config ||= begin
        path = Rails.root.join('config', 'shoppe.yml')
        if File.exist?(path)
          config = YAML.load_file(path).with_indifferent_access
          setup_config(config)
          config
        else
          raise InvalidConfiguration, "Shoppe configuration file missing at #{path}"
        end
      end
    end
    
    def setup_config(config)
      ActionMailer::Base.smtp_settings = config[:smtp_settings] if config[:smtp_settings]
    end
    
    def validate_live_config(*requirements)
      validate_config(self.config, [], *requirements)
    end
    
    def validate_config(config, scope, *requirements)
      for req in requirements
        case req
        when String, Symbol
          unless config.keys.include?(req.to_s)
            raise Shoppe::Errors::InvalidConfiguration, "Missing configuration option '#{scope.join('.')}.#{req}' in shoppe.yml"
          end
        when Array
          validate_config(config, scope, *req)
        when Hash
          req.each do |key, value|
            if config[key] && config[key].is_a?(Hash)
              scope << key
              validate_config(config[key], scope, *value)
            else
              validate_config(config, scope, key)
            end
          end
        end
      end
    end
    
  end
  
end

# Start your engines.
require "shoppe/engine"