class GraphQL::Schema::List

def coerce_input(value, ctx)
  if value.nil?
    nil
  else
    coerced = ensure_array(value).map { |item| item.nil? ? item : of_type.coerce_input(item, ctx) }
    ctx.schema.after_any_lazies(coerced, &:itself)
  end
end

def coerce_result(value, ctx)
  value.map { |i| i.nil? ? nil : of_type.coerce_result(i, ctx) }
end

def description
  nil
end

def ensure_array(value)
  # `Array({ a: 1 })` makes `[[:a, 1]]`, so do it manually
  if value.is_a?(Array)
    value
  else
    [value]
  end
end

def graphql_name
  nil
end

def kind
  GraphQL::TypeKinds::LIST
end

def list?
  true
end

def to_graphql
  @of_type.graphql_definition.to_list_type
end

def to_type_signature
  "[#{@of_type.to_type_signature}]"
end

def validate_non_null_input(value, ctx)
  result = GraphQL::Query::InputValidationResult.new
  ensure_array(value).each_with_index do |item, index|
    item_result = of_type.validate_input(item, ctx)
    if !item_result.valid?
      result.merge_result!(index, item_result)
    end
  end
  result
end