module Sis
  module Core
    class CourseAssignment < ApplicationRecord
      belongs_to :course_offering
      belongs_to :section
      belongs_to :instructor
      belongs_to :lab_instructor, class_name: 'Sis::Core::Instructor', optional: true
      belongs_to :tutorial_instructor, class_name: 'Sis::Core::Instructor', optional: true

      delegate(:course_code, to: :course_offering, prefix: false)
      delegate(:course_title, to: :course_offering, prefix: false)
      delegate(:course_ects, to: :course_offering, prefix: false)
      delegate(:course_credit_hours, to: :course_offering, prefix: false)
      delegate(:course_id, to: :course_offering, prefix: false)
      delegate(:course_lecture_hours, to: :course_offering, prefix: false)
      delegate(:course_lab_hours, to: :course_offering, prefix: false)
      delegate(:course_tutorial_hours, to: :course_offering, prefix: false)
      delegate(:first_name, to: :instructor, prefix: true, allow_nil: true)
      delegate(:middle_name, to: :instructor, prefix: true, allow_nil: true)
      delegate(:last_name, to: :instructor, prefix: true, allow_nil: true)
      delegate(:first_name, to: :lab_instructor, prefix: true, allow_nil: true)
      delegate(:middle_name, to: :lab_instructor, prefix: true, allow_nil: true)
      delegate(:last_name, to: :lab_instructor, prefix: true, allow_nil: true)
      delegate(:first_name, to: :tutorial_instructor, prefix: true, allow_nil: true)
      delegate(:middle_name, to: :tutorial_instructor, prefix: true, allow_nil: true)
      delegate(:last_name, to: :tutorial_instructor, prefix: true, allow_nil: true)

      def instructor_full_name
        "#{instructor_first_name} #{instructor_middle_name} #{instructor_last_name}"
      end
    
      def lab_instructor_full_name
        "#{lab_instructor_first_name} #{lab_instructor_middle_name} #{lab_instructor_last_name}"
      end
    
      def tutorial_instructor_full_name
        "#{tutorial_instructor_first_name} #{tutorial_instructor_middle_name} #{tutorial_instructor_last_name}"
      end
    end
  end
end