Module: Minitwin::Sync

Included in:
Minitwin
Defined in:
lib/minitwin/sync.rb

Constant Summary collapse

MODEL_PREFIX =

Cache constant reference for JIT optimization

Minitwin::INTERNAL_MODEL_PREFIX

Instance Method Summary collapse

Instance Method Details

#sync(model = nil, validate: true) ⇒ Object

: (untyped, validate: bool) -> bool



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# File 'lib/minitwin/sync.rb', line 10

def sync(model = nil, validate: true)
  # Resolve target model
  target_model = model
  if target_model.nil?
    ivar = self.class.internal_model_name("model")
    target_model = instance_variable_defined?(ivar) ? instance_variable_get(ivar) : nil
    if target_model.nil?
      any_ivar = instance_variables.find { |v| v.to_s.start_with?(MODEL_PREFIX) }
      target_model = instance_variable_get(any_ivar) if any_ivar
    end
  end

  return false if validate && !valid?
  return false if target_model.nil?

  attribute_methods.each do |method_name| # rubocop: disable Metrics/BlockLength
    prop_meta = self.class.properties[method_name] || self.class.collections[method_name]
    as_name = prop_meta&.[](:as)
    target_name = as_name.is_a?(Symbol) || as_name.is_a?(String) ? as_name.to_sym : method_name

    writer = :"#{target_name}="
    next unless target_model.respond_to?(writer) || target_model.respond_to?(target_name)

    value = respond_to?(method_name, true) ? send(method_name) : nil

    # Nested twins
    if value.is_a?(Minitwin)
      if target_model.respond_to?(target_name)
        begin
          child_model = target_model.public_send(target_name)
          if child_model
            value.sync(child_model, validate: false)
            next
          end
        rescue StandardError
          # fall through to writer
        end
      end
    elsif value.is_a?(Array)
      if target_model.respond_to?(target_name)
        begin
          coll = target_model.public_send(target_name)
          if coll.respond_to?(:each)
            deep_synced_any = false

            id_map = build_target_id_lookup(coll)

            value.each_with_index do |elem, idx|
              next unless elem.is_a?(Minitwin)

              target = nil

              # Try id-based match first
              target ||= begin
                elem_id = elem.respond_to?(:id, true) ? elem.send(:id) : nil
                id_map && elem_id ? id_map[elem_id] : nil
              end

              if target.nil? && coll.respond_to?(:[])
                begin
                  target = coll[idx]
                rescue StandardError
                  target = nil
                end
              end

              next unless target

              elem.sync(target, validate: false)
              deep_synced_any = true
              next

              # Unmatched elements are handled later by writer fallback
            end

            next if deep_synced_any
          end
        rescue StandardError
          # continue to writer fallback
        end
      end
    end

    assignable = case value
                 when Minitwin
                   value.to_hash
                 when Array
                   value.map { |v| v.is_a?(Minitwin) ? v.to_hash : v }
                 else
                   value
                 end

    begin
      target_model.public_send(writer, assignable)
    rescue StandardError
      # ignore and continue
    end
  end

  true
end