#
# Author:: Adam Jacob (<adam@hjksolutions.com>)
# Copyright:: Copyright (c) 2008 HJK Solutions, LLC
# License:: Apache License, Version 2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# 
#     http://www.apache.org/licenses/LICENSE-2.0
# 
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

class Chef
  class Compile
      
    attr_accessor :node, :cookbook_loader, :collection, :definitions
    
    # Creates a new Chef::Compile object.  This object gets used by the Chef Server to generate
    # a fully compiled recipe list for a node.
    def initialize()
      @node = nil
      @cookbook_loader = Chef::CookbookLoader.new
      @collection = Chef::ResourceCollection.new
      @definitions = Hash.new
    end
    
    # Looks up the node via the "name" argument, first from CouchDB, then by calling
    # Chef::Node.find_file(name)
    #
    # The first step in compiling the catalog. Results available via the node accessor.
    def load_node(name)
      Chef::Log.debug("Loading Chef Node #{name} from CouchDB")
      @node = Chef::Node.load(name)
      Chef::Log.debug("Loading Recipe for Chef Node #{name}")
      @node.find_file(name)
      @node
    end
    
    # Load all the definitions, from every cookbook, so they are available when we process
    # the recipes.
    #
    # Results available via the definitions accessor.
    def load_definitions()
      @cookbook_loader.each do |cookbook|
        hash = cookbook.load_definitions
        @definitions.merge!(hash)
      end
    end
    
    # Load all the recipes specified in the node data (loaded via load_node, above.)
    # 
    # The results are available via the collection accessor (which returns a Chef::ResourceCollection 
    # object)
    def load_recipes
      @node.recipes.each do |recipe|
        rmatch = recipe.match(/(.+?)::(.+)/)
        if rmatch
         cookbook = @cookbook_loader[rmatch[1]]
         cookbook.load_recipe(rmatch[2], @node, @collection, @definitions, @cookbook_loader)
        else
         cookbook = @cookbook_loader[recipe]
         cookbook.load_recipe("default", @node, @collection, @definitions, @cookbook_loader)
        end
      end
    end
    
  end
end