Module: Fulfil::ResponseParser

Defined in:
lib/fulfil/response_parser.rb

Defined Under Namespace

Classes: UnhandledTypeError

Class Method Summary collapse

Class Method Details

.group(key_value_tuples) ⇒ Object 



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# File 'lib/fulfil/response_parser.rb', line 43

def self.group(key_value_tuples)
  key_value_tuples
    .group_by { |kv_tuple| kv_tuple[0][0] }
    .map do |group_key, kv_tuples|
    if kv_tuples.length == 1
      [group_key, mapped_value_field(value: kv_tuples[0][1])]
    else
      id = kv_tuples[0]
      attrs = kv_tuples[1..].map { |tuple| [tuple[0][1..], tuple[1]] }
      [group_key, [['id', id[1]]].concat(group(attrs)).to_h]
    end
  end
end

.mapped_value_field(value:) ⇒ Object

Handle value objects, for example:

“order_date”: 

"__class__": "date",
"iso_string": "2019-07-08"




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# File 'lib/fulfil/response_parser.rb', line 21

def self.mapped_value_field(value:)
  return value unless value.is_a?(Hash) && value['__class__']

  json_class = value['__class__']

  case json_class
  when 'date'
    date = value['iso_string']
    Date.parse(date)
  when 'datetime'
    time = value['iso_string']
    DateTime.parse(time)
  when 'Decimal', 'timedelta'
    value['decimal'].to_f
  else
    raise UnhandledTypeError.new(
      "received a value that we don't know how to handle: #{json_class}",
      json_class
    )
  end
end

.parse(item:) ⇒ Object 



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# File 'lib/fulfil/response_parser.rb', line 57

def self.parse(item:)
  case item
  when Hash
    group(item.map { |(key, value)| [key.split('.'), value] }).to_h
  else
    item
  end
end