module Architect4r
  module Core
    module NodeMethods
      extend ActiveSupport::Concern
      
      module InstanceMethods
        
        def create_node(properties)
          # Send request
          response = Typhoeus::Request.post(prepend_base_url('/node'), 
            :headers => { 'Accept' => 'application/json', 'Content-Type' => 'application/json' },
            :body => properties.to_json)
          
          # Evaluate response
          response.code == 201 ? JSON.parse(response.body) : nil
        end
        
        def get_node(id)
          # Example response for a node
          # extensions: {}
          # 
          # paged_traverse: http://localhost:7475/db/data/node/0/paged/traverse/{returnType}{?pageSize,leaseTime}
          # self: http://localhost:7475/db/data/node/0
          # property: http://localhost:7475/db/data/node/0/properties/{key}
          # data: {}
          # 
          # incoming_typed_relationships: http://localhost:7475/db/data/node/0/relationships/in/{-list|&|types}
          # outgoing_typed_relationships: http://localhost:7475/db/data/node/0/relationships/out/{-list|&|types}
          # incoming_relationships: http://localhost:7475/db/data/node/0/relationships/in
          # all_relationships: http://localhost:7475/db/data/node/0/relationships/all
          # create_relationship: http://localhost:7475/db/data/node/0/relationships
          # traverse: http://localhost:7475/db/data/node/0/traverse/{returnType}
          # properties: http://localhost:7475/db/data/node/0/properties
          # all_typed_relationships: http://localhost:7475/db/data/node/0/relationships/all/{-list|&|types}
          # outgoing_relationships: http://localhost:7475/db/data/node/0/relationships/out
          
          # Handle cases where id might be a url
          
          response = Typhoeus::Request.get(node_url(id), :headers => { 'Accept' => 'application/json' })
          response.code == 200 ? JSON.parse(response.body) : nil
        end

        def update_node(id, properties)
          # Handle urls
          url = id.to_i == 0 ? id : node_url(id)

          # Append the properties
          url += "/properties"

          response = Typhoeus::Request.put(url, 
            :headers => { 'Accept' => 'application/json', 'Content-Type' => 'application/json' },
            :body => properties.to_json)
          response.code == 204 ? true : false
        end
        
        def delete_node(id)
          # Delete all relationships
          get_node_relationships(id, :all).each do |rel|
            delete_relationship(rel)
          end
          
          # Delete node itself
          response = Typhoeus::Request.delete(node_url(id), :headers => { 'Accept' => 'application/json' })
          response.code == 204 ? true : false
        end
        
        def root
          get_node(get('/')['reference_node'])
        end
      end
    end
  end
end