Class: Apiwork::Contract::Object::Transformer

Inherits:
Object
  • Object
show all
Defined in:
lib/apiwork/contract/object/transformer.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(shape) ⇒ Transformer

Returns a new instance of Transformer.



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# File 'lib/apiwork/contract/object/transformer.rb', line 13

def initialize(shape)
  @shape = shape
end

Class Method Details

.transform(shape, params) ⇒ Object 



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# File 'lib/apiwork/contract/object/transformer.rb', line 8

def transform(shape, params)
  new(shape).transform(params)
end

Instance Method Details

#transform(params) ⇒ Object 



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# File 'lib/apiwork/contract/object/transformer.rb', line 17

def transform(params)
  return params unless params.is_a?(Hash)

  transformed = params.dup

  @shape.params.each do |name, param_options|
    next unless transformed.key?(name)

    value = transformed[name]

    if param_options[:as]
      transformed[param_options[:as]] = transformed.delete(name)
      name = param_options[:as]
      value = transformed[name]
    end

    if param_options[:shape] && value.is_a?(Hash)
      transformed[name] = Transformer.transform(param_options[:shape], value)
    elsif param_options[:type] == :record && value.is_a?(Hash)
      of = param_options[:of]
      of_shape = of&.shape

      if of_shape
        transformed[name] = value.transform_values do |item|
          item.is_a?(Hash) ? Transformer.transform(of_shape, item) : item
        end
      end
    elsif param_options[:type] == :array && value.is_a?(Array)
      of = param_options[:of]
      of_shape = of&.shape

      if of&.type == :union
        transformed[name] = value
      elsif of_shape
        transformed[name] = value.map do |item|
          item.is_a?(Hash) ? Transformer.transform(of_shape, item) : item
        end
      elsif of && (array_result = transform_custom_type_array(value, param_options))
        transformed[name] = array_result
      end
    end
  end

  transformed
end