# The WorkProduct core represents a task being implemented on a specific
# work product. To this regard, a work product is an assignable itself which
# contains the basic product attributes (e.g. dimension, name, design reference)
# on one hand, and task related attributes (e.g. start date and completion date)
# on the other hand. A task may have multiple work products under it. It is
# important to note that currently there is no direct way to link products and
# sub products, as we have done with tasks and sub tasks. If there is a desire
# to have such a link between products (e.g. we may later want to have reports
# per specific high level products, which in turn asks for finding all sub products
# under the selected high level product and do calculations), then a `code` field
# has been introduced to the WorkProduct core. This field can be used in a similar
# way as chart of accounts to identify parent and child relationships. Even then,
# there needs to be a well defined coding scheme developed before using the column
# field.
module Ecom
  module Core
    class WorkProduct < ApplicationRecord
      include AASM

      NEW = 'New'.freeze
      UNDER_CONSTRUCTION = 'Under Construction'.freeze
      COMPLETED = 'Completed'.freeze

      STATUSES = [NEW, UNDER_CONSTRUCTION, COMPLETED].freeze

      belongs_to :work_product_template
      belongs_to :project
      belongs_to :product_group, optional: true
      belongs_to :work_package, optional: true
      belongs_to :approver, class_name: 'Ecom::Core::User', optional: true
      belongs_to :supervisor, class_name: 'Ecom::Core::User', optional: true
      belongs_to :quality_controller, class_name: 'Ecom::Core::User', optional: true
      has_many :tasks

      validates :name, :design_reference_no, :status, :percent_completed, presence: true
      validates :design_reference_no, uniqueness: { scope: :project_id }
      validates :status, inclusion: STATUSES
      validates_numericality_of :percent_completed,
                                only_integer: true,
                                greater_than_or_equal_to: 0,
                                less_than_or_equal_to: 100
    end
  end
end