module RailsWizard
  module Recipes
    @@categories = {}
    @@list = {}
    
    def self.add(recipe)
      RailsWizard::Recipes.const_set ActiveSupport::Inflector.camelize(recipe.key), recipe
      @@list[recipe.key] = recipe
      (@@categories[recipe.category.to_s] ||= []) << recipe.key
      @@categories[recipe.category.to_s].uniq!
      recipe
    end

    def self.[](key)
      @@list[key.to_s]
    end

    def self.list
      @@list.keys.sort
    end

    def self.list_classes
      @@list.values.sort_by{|c| c.key}
    end

    def self.categories
      @@categories.keys.sort
    end

    def self.for(category)
      (@@categories[category.to_s] || []).sort
    end

    def self.remove_from_category(category, recipe)
      (@@categories[category.to_s] ||= []).delete(recipe.key)
    end

    def self.add_from_directory(directory)
      Dir.foreach(directory) do |file|
        path = File.join(directory, file)
        next unless path.match /\.rb$/
        key = File.basename(path, '.rb')
        recipe = Recipe.generate(key, File.open(path))
        add(recipe)
      end
    end
  end
end