# Copyright (c) 2011-2014, HL7, Inc & The MITRE Corporation
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module FHIR
    class Group 
        
        include Mongoid::Document
        include Mongoid::History::Trackable
        include FHIR::Element
        include FHIR::Resource
        include FHIR::Formats::Utilities
        include FHIR::Serializer::Utilities
        extend FHIR::Deserializer::Group
        
        SEARCH_PARAMS = [
            'member',
            '_id',
            'characteristic-value',
            'value',
            'actual',
            'exclude',
            '_language',
            'code',
            'characteristic',
            'type',
            'identifier'
            ]
        
        VALID_CODES = {
            fhirType: [ "person", "animal", "practitioner", "device", "medication", "substance" ]
        }
        
        # This is an ugly hack to deal with embedded structures in the spec characteristic
        class GroupCharacteristicComponent
        include Mongoid::Document
        include FHIR::Element
        include FHIR::Formats::Utilities
            embeds_one :code, class_name:'FHIR::CodeableConcept'
            validates_presence_of :code
            embeds_one :valueCodeableConcept, class_name:'FHIR::CodeableConcept'
            validates_presence_of :valueCodeableConcept
            field :valueBoolean, type: Boolean
            validates_presence_of :valueBoolean
            embeds_one :valueQuantity, class_name:'FHIR::Quantity'
            validates_presence_of :valueQuantity
            embeds_one :valueRange, class_name:'FHIR::Range'
            validates_presence_of :valueRange
            field :exclude, type: Boolean
            validates_presence_of :exclude
        end
        
        embeds_one :identifier, class_name:'FHIR::Identifier'
        field :fhirType, type: String
        validates :fhirType, :inclusion => { in: VALID_CODES[:fhirType] }
        validates_presence_of :fhirType
        field :actual, type: Boolean
        validates_presence_of :actual
        embeds_one :code, class_name:'FHIR::CodeableConcept'
        field :name, type: String
        field :quantity, type: Integer
        embeds_many :characteristic, class_name:'FHIR::Group::GroupCharacteristicComponent'
        embeds_many :member, class_name:'FHIR::ResourceReference'
        track_history
    end
end
