## Ruby and Rails Rules Engine Framework
# More detailed documentation at http://www.r3ef.com

## Installation Guide
###################################### 
# 1. Install the Gem
sudo gem install rules_engine
sudo gem install rspec cucumber

######################################
# 2. Create the Rails App
rails MyCoolNewApp	
cd MyCoolNewApp
rm ./public/index.html

./script/generate rspec
./script/generate cucumber --rspec

./script/generate rules_engine

######################################
# 3. Setup the Rails Environments
 - ./config/environment.rb
 
Rails::Initializer.run do |config|
  ...
  config.gem 'rules_engine'
  config.gem 'will_paginate'
  config.gem 'acts_as_list'
  ...
end

 - ./config/environments/production.rb
 - ./config/environments/development.rb
 
RulesEngine::Cache.cache_store = :mem_cache_store, "localhost:11210"
#   RulesEngine::Cache.cache_store = :memory_store
#   RulesEngine::Cache.cache_store = :file_store, "/path/to/cache/directory"
#   RulesEngine::Cache.cache_store = :drb_store, "druby://localhost:9192"
#   RulesEngine::Cache.cache_store = :mem_cache_store, "localhost"
#   RulesEngine::Cache.cache_store = MyOwnStore.new("parameter")

 - ./config/environments/test.rb
 - ./config/environments/cucumber.rb
 
config.gem "rspec",             :version => '>=1.3.0', :lib => false
config.gem "rspec-rails",       :version => '>=1.3.2', :lib => false
config.gem "faker",             :version => '>=0.3.1', :lib => false

config.gem "machinist",         :version => '>=1.0.6', :lib => false
config.gem 'rcov',              :version => '>=0.9.8', :lib => false
config.gem 'remarkable_rails',  :version => '>=3.1.13', :lib => false

require 'machinist/active_record'
require 'sham'
require 'faker'
require 'remarkable_rails'

######################################
# 4. Add the Routes
 - ./config/routes.rb

ActionController::Routing::Routes.draw do |map|
  ...
  
  ### remove map.root if already defined
  map.root :controller => :re_plans, :action => 'template'
  map.resources :re_plans, :member => {:change => :get,
                                      :preview => :get,
                                      :publish => :put, :revert => :put,
                                      :re_process => :get,
                                      :copy => :get, :duplicate => :post} do |re_map|  
    
    re_map.resources :workflows, :controller => :re_plan_workflows, 
                          :except => [:index],
                          :member => {:change => :get, 
                                      :default => :put, 
                                      :add => :put, :remove => :put,
                                      :copy => :get, :duplicate => :post} do |re_pipeline|
      re_pipeline.resources :rules, :controller => :re_plan_workflow_rules, 
                                :except => [:index, :show],
                                :collection => {:help => :get, :error => :get}, 
                                :member => {:move_up => :put, :move_down => :put}
                                        
    end  
  end

  map.resources :re_workflows, :collection => {:add => :get},
                               :member => {:plan => :get,
                                           :change => :get, 
                                           :preview => :get,
                                           :copy => :get, :duplicate => :post} do |re_pipeline|
    re_pipeline.resources :rules, :controller => :re_workflow_rules, 
                              :except => [:index, :show],
                              :collection => {:help => :get, :error => :get}, 
                              :member => {:move_up => :put, :move_down => :put}
  end  

  map.resources :re_history,    :only => [:index, :show]
  map.resources :re_publications, :only => [:show]

  ...


######################################
# 5. Define the Access Levels
 - ./app/controllers/application_controller.rb
class ApplicationController < ActionController::Base

  helper_method :rules_engine_reader?, :rules_engine_editor?

  def rules_engine_reader?
    # why cookies[:rules_engine_reader] ? It's a workaround for cucumber testing
    return cookies[:rules_engine_reader].nil? ? true : 
                                                cookies[:rules_engine_reader].downcase == 'true'
  end  

  def rules_engine_editor?
    # why cookies[:rules_engine_editor] ? It's a workaround for cucumber testing
    return cookies[:rules_engine_editor].nil? ? true : 
                                                cookies[:rules_engine_editor].downcase == 'true'
  end  

  def rules_engine_reader_access_required
    unless rules_engine_reader?    
      redirect_to(root_path) 
      flash[:success] = 'Rules Engine Access Denied.'
    end  
  end

  def rules_engine_editor_access_required
    unless rules_engine_editor?    
      redirect_to(root_path) 
      flash[:success] = 'Rules Engine Editor Access Denied.'
    end
  end

######################################
# 6. Install the Required Gems
  rake gems:install
  rake gems:install RAILS_ENV=test  	

######################################
# 7. Migrate the Database
  rake db:migrate	
  rake db:migrate RAILS_ENV=test

######################################
# 8. Create a Simple Rule
  ./script/generate rules_engine simple does_nothing

######################################
# 9. Create a Complex Rule
  ./script/generate rules_engine complex match_words

######################################
# 10. Run the Tests
  rake spec
  rake spec:rcov
  rake cucumber
  open coverage/index.html

######################################
# 11. Start the Server
  ./script/server
  open http://localhost:3000/re_plans

######################################
# 12. Create Pipelines and Rules
  Watch the demo at "TODO":http://www.r3ef.com/