# This module is an implementation of this UML:
# http://www.openehr.org/uml/release-1.0.1/Browsable/_9_0_76d0249_1109331021343_528780_2066Report.html
# Ticket refs #39
module OpenEHR
  module RM
    module Support
      module Identification
        class ObjectId
          attr_reader :value

          def initialize(value)
            self.value=value
          end

          def value=(value)
            raise ArgumentError, "empty value" if value.nil? or value.empty?
            @value = value            
          end
          def ==(object_id)
            @value == object_id.value
          end
        end # of ObjectID

        class ObjectRef
          attr_reader :namespace, :type, :id

          def initialize(namespace, type, id)
            self.namespace = namespace
            self.type = type
            self.id = id
          end

          def namespace=(namespace)
            raise ArgumentError if namespace.nil? or namespace.empty? or !(/([a-z]|[A-Z]).*/ =~ namespace) # error original is =~ #([a-z][A-Z])([a-z]|[A-Z]|\s|[0-9]|[_-\:\/\&\+\?])*/
            @namespace = namespace
          end

          def type=(type)
            raise ArgumentError if type.nil? or type.empty?
            @type = type
          end

          def id=(id)
            raise ArgumentError if id.nil?
            @id = id
          end
        end

        class ArchetypeId < ObjectId
          attr_reader :domain_concept, :rm_name, :rm_entity, :rm_originator, :specialisation, :version_id

          def initialize(value, domain_concept, rm_name, rm_entity, rm_originator, specialisation, version_id)
            super(value)
            self.domain_concept = domain_concept
            self.rm_name = rm_name
            self.rm_entity = rm_entity
            self.rm_originator = rm_originator
            self.specialisation = specialisation
            self.version_id = version_id
          end

          def domain_concept=(domain_concept)
            raise ArgumentError, "domain concept not valid" if domain_concept.nil? or domain_concept.empty?
            @domain_concept = domain_concept
          end

          def rm_name=(rm_name)
            raise ArgumentError, "rm_name not valid" if rm_name.nil? or rm_name.empty?
            @rm_name = rm_name
          end

          def rm_entity=(rm_entity)
            raise ArgumentError, "rm_entity not valid" if rm_entity.nil? or rm_entity.empty?
            @rm_entity = rm_entity
          end

          def rm_originator=(rm_originator)
            raise ArgumentError, "rm_originator not valid" if rm_originator.nil? or rm_originator.empty?
            @rm_originator = rm_originator
          end

          def specialisation=(specialisation)
            raise ArgumentError, "rm_specialisation not valid" if specialisation.nil? or specialisation.empty?
            @specialisation = specialisation
          end
          def version_id=(version_id)
            raise ArgumentError, "version_id not valid" if version_id.nil? or version_id.empty?
            @version_id = version_id
          end
        end

        class TerminologyId < ObjectId
          attr_reader :name, :version_id

          def initialize(value)
            super(value)
          end

          def value
            if @version_id.empty?
              @name
            else
              @name + '(' + @version_id + ')'
            end 
          end


          def value=(value)
            raise ArgumentError, "value not valid" if value.nil? or value.empty?
            if /(.*)\((.*)\)$/ =~ value
              @name = $1
              @version_id = $2
            else
              @name = value
              @version_id = ''
            end
            @value = value
          end

          def name=(name)
            raise ArgumentError, "name not valid" if name.nil? or name.empty?
            @name = name
          end

          def version_id=(version_id)
            raise ArgumentError, "version_id not valid" if version_id.nil?
            @version_id = version_id
          end
        end # of Terminology_ID

        class GenericId < ObjectId
          attr_reader :scheme

          def initialize(value, scheme)
            super(value)
            self.scheme = scheme
          end

          def scheme=(scheme)
            raise ArgumentError, "scheme not valid" if scheme.nil? or scheme.empty?
            @scheme = scheme
          end
        end # of Generic_ID

        class TemplateId < ObjectId

        end

        class UidBasedId < ObjectId
          def initialize(value)
            super(value)
          end

          def extension
            if self.has_extension?
              @value[/::.*/][2..-1]
            else
              ''
            end
          end

          def has_extension?
            @value.include? '::'
          end

          def root
            if self.has_extension?
              @value[/.*::/][0..-3]
            else
              @value
            end
          end
        end

        class ObjectVersionId < UidBasedId
          attr_reader :object_id, :creating_system_id, :version_tree_id

          def initialize(value)
            super(value)
          end

          def value=(value)
            super(value)
            if /^(\w+)::(\w+)::((\d|\.)+)$/ =~ value
              self.object_id = Uid.new($1)
              self.creating_system_id = Uid.new($2)
              self.version_tree_id = VersionTreeId.new($3)
            else
              raise ArgumentError, 'invalid format'
            end
          end

          def object_id=(object_id)
            raise ArgumentError, 'object_id is mandatory' if object_id.nil?
            @object_id = object_id
          end

          def creating_system_id=(creating_system_id)
            if creating_system_id.nil?
              raise ArgumentError, 'creating_system_id is mandatory'
            end
            @creating_system_id = creating_system_id
          end

          def version_tree_id=(version_tree_id)
            if version_tree_id.nil?
              raise ArgumentError, 'version_tree_id is mandatory'
            end
            @version_tree_id = version_tree_id
          end

          def is_branch?
            return @version_tree_id.is_branch?
          end
        end

        class LocatableRef < ObjectRef
          attr_reader :namespace, :type, :id, :path

          def initialize(namespace, type, id, path)
            super(namespace, type, id)
            self.path = path
          end

          def path=(path)
            raise ArgumentError if path.nil? or path.empty?
            @path = path
          end

          def as_uri
            'ehr://' + @id.value + '/' + @path
          end
        end

        class PartyRef < ObjectRef

          def type=(type)
            parties = ['PERSON', 'ORGANISATION', 'GROUP', 'AGENT', 'ROLE','PARTY', 'ACTOR']
            raise ArgumentError, 'type invalid' unless parties.include? type
            @type = type
          end
        end

        class AccessGroupRef < ObjectRef
          def type=(type)
            raise ArgumentError, 'type invalid' unless type == 'ACCESS_GROUP'
            @type = type
          end
        end

        class HierObjectId < UidBasedId

        end

        class VersionTreeId
          attr_reader :value, :trunk_version, :branch_number, :branch_version

          def initialize(value)
            self.value = value
          end

          def value=(value)
            raise ArgumentError, 'value invalid' if value.nil? or value.empty?
            @trunk_version = @branch_number = @branch_version = nil
            (trunk_version, branch_number, branch_version) = value.split '.'
            self.trunk_version = trunk_version
            self.branch_number = branch_number
            self.branch_version = branch_version
          end

          def trunk_version=(trunk_version)
            raise ArgumentError, 'trunk_version invalid' if trunk_version.nil? and !trunk_version.to_i >= 1
            @trunk_version = trunk_version
            set_value
          end

          def branch_number=(branch_number)
            raise ArgumentError, 'branch number invalid' unless branch_number.nil? or branch_number.to_i >= 1
            @branch_number = branch_number
            set_value
          end

          def branch_version=(branch_version)
            raise ArgumentError, 'branch version invalid' if (!branch_version.nil? and !( branch_version.to_i >= 1)) or (!branch_version.nil? and @branch_number.nil?)
            @branch_version = branch_version
            set_value
          end
          def is_branch?
            !@branch_version.nil? and !@branch_number.nil?
          end

          def is_first?
            trunk_version == '1'
          end

          private
          def set_value
            @value = trunk_version
            @value = @value + '.' + @branch_number unless @branch_number.nil?
            @value = @value + '.' + @branch_version unless @branch_version.nil?
          end
        end

        class Uid
          attr_reader :value

          def initialize(value)
            self.value = value
          end

          def value=(value)
            raise ArgumentError if value.nil? or value.empty?
            @value = value
          end
        end

        class Uuid < Uid

        end

        class InternetId <Uid
          
        end

        class IsoOid <Uid

        end        
      end # of Identification
    end # of Support
  end # of RM
end # of OpenEHR