module Lutaml::Xml::Type::Serializers

def register_all!
  v = Lutaml::Model::Type::Value
  # String — value&.to_s
  v.register_format_type_serializer(
    :xml, Lutaml::Model::Type::String,
    to: ->(inst) { inst.value&.to_s },
    from: ->(val) { Lutaml::Model::Type::String.cast(val) }
  )
  # Float — value.to_s
  v.register_format_type_serializer(
    :xml, Lutaml::Model::Type::Float,
    to: ->(inst) { inst.value.to_s }
  )
  # Boolean — value.to_s
  v.register_format_type_serializer(
    :xml, Lutaml::Model::Type::Boolean,
    to: ->(inst) { inst.value.to_s }
  )
  # Time — ISO8601 with fractional seconds handling
  v.register_format_type_serializer(
    :xml, Lutaml::Model::Type::Time,
    to: lambda { |inst|
      return nil unless inst.value
      if inst.value.subsec.zero?
        inst.value.iso8601
      else
        inst.value.iso8601(6).sub(/(\.\d{3})0{3}([+-])/, '\1\2')
      end
    }
  )
  # DateTime — ISO8601 with Z for UTC
  v.register_format_type_serializer(
    :xml, Lutaml::Model::Type::DateTime,
    to: lambda { |inst|
      return nil unless inst.value
      result = Lutaml::Model::Type::DateTime.format_datetime_iso8601(inst.value)
      inst.value.offset.zero? ? result.sub(/\+00:00$/, "Z") : result
    }
  )
  # Date — ISO8601 with Z for UTC
  v.register_format_type_serializer(
    :xml, Lutaml::Model::Type::Date,
    to: lambda { |inst|
      return nil unless inst.value
      result = Lutaml::Model::Type::Date.serialize(inst.value)
      result = result.sub(/\+00:00$/, "Z") if result.include?("+00:00")
      result
    }
  )
  # TimeWithoutDate — delegates to self.class.serialize
  v.register_format_type_serializer(
    :xml, Lutaml::Model::Type::TimeWithoutDate,
    to: ->(inst) { Lutaml::Model::Type::TimeWithoutDate.serialize(inst.value) }
  )
  # Symbol — :symbol: format
  v.register_format_type_serializer(
    :xml, Lutaml::Model::Type::Symbol,
    to: ->(inst) { ":#{inst.value}:" }
  )
  # Hash — value (pass-through)
  v.register_format_type_serializer(
    :xml, Lutaml::Model::Type::Hash,
    to: lambda(&:value)
  )
  # Reference — key&.to_s
  v.register_format_type_serializer(
    :xml, Lutaml::Model::Type::Reference,
    to: ->(inst) { inst.key&.to_s },
    from: ->(val) { Lutaml::Model::Type::Reference.cast(val) }
  )
end