scottohara/loot

# Copyright (c) 2016 Scott O'Hara, oharagroup.net
# frozen_string_literal: true

# Security serializer
class SecuritySerializer < ::ActiveModel::Serializer
    attributes :id, :name, :code, :current_holding, :closing_balance, :num_transactions, :unused, :favourite

    def current_holding
        object.transactions.for_current_holding.reduce(0) do |holding, security|
            holding + (security.total_quantity * (security.direction.eql?('inflow') ? 1 : -1))
        end
    end

    def num_transactions
        object.transactions.count
    end

    def unused
        object.transactions.count.eql? 0
    end
end