# 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

      belongs_to :work_product_template
      belongs_to :task
      belongs_to :project
      belongs_to :performer, class_name: 'Ecom::Core::User'
      belongs_to :approver, class_name: 'Ecom::Core::User'
      belongs_to :supervisor, class_name: 'Ecom::Core::User'
      belongs_to :quality_controller, class_name: 'Ecom::Core::User'

      validates :name, presence: true
      validates :design_reference_no, uniqueness: true

      aasm column: 'task_status' do
        state :new, initial: true
        state :in_progress
        state :submitted
        state :under_review
        state :completed

        event :start do
          transitions from: :new, to: :in_progress
        end

        event :submit do
          transitions from: :in_progress, to: :submitted
        end

        event :review do
          transitions from: :submitted, to: :under_review
        end

        event :complete do
          transitions from: %i[submitted under_review], to: :completed
        end

        event :rework do
          transitions from: :under_review, to: :in_progress
        end
      end

      aasm column: 'assignment_status' do
        state :unassigned, initial: true
        state :assigned

        event :assign do
          transitions from: :unassigned, to: :assigned
        end
      end
    end
  end
end