chore: init commit

in worker.../repo/GITFOLDER.zip is the .git folder.

worker-toolkit-stocks-in-the-future/repo/app/models/student.rb

@@ -0,0 +1,87 @@
+# frozen_string_literal: true
+
+class Student < User
+  has_many :classroom_enrollments, dependent: :destroy
+  has_many :classrooms, through: :classroom_enrollments
+
+  # Ensure students have nil email by default (not empty string)
+  after_initialize :set_default_email, if: :new_record?
+  after_create :ensure_portfolio
+  after_create :create_initial_enrollment, if: -> { classroom_id.present? }
+
+  delegate :path, to: :portfolio, prefix: true, allow_nil: true
+
+  # Get the student's current (active) enrollments
+  #
+  # @return [ActiveRecord::Relation<ClassroomEnrollment>]
+  def current_enrollments
+    classroom_enrollments.current
+  end
+
+  # Get the student's current (active) classrooms
+  #
+  # @return [ActiveRecord::Relation<Classroom>]
+  def current_classrooms
+    classrooms.joins(:classroom_enrollments)
+      .merge(classroom_enrollments.current)
+      .distinct
+  end
+
+  # Get the student's primary enrollment
+  #
+  # @return [ClassroomEnrollment, nil]
+  def primary_enrollment
+    classroom_enrollments.primary_enrollment.current.first
+  end
+
+  # Get the student's primary classroom (for backward compatibility)
+  # Falls back to classroom_id if no primary enrollment exists
+  #
+  # @return [Classroom, nil]
+  def primary_classroom
+    primary_enrollment&.classroom || classroom
+  end
+
+  # Enroll the student in a classroom
+  #
+  # @param classroom [Classroom] the classroom to enroll in
+  # @param enrolled_at [DateTime] when the student enrolled (defaults to now)
+  # @param primary [Boolean] whether this should be the primary enrollment
+  # @return [ClassroomEnrollment]
+  def enroll_in!(classroom, enrolled_at: Time.current, primary: false)
+    enrollment = classroom_enrollments.create!(
+      classroom: classroom,
+      enrolled_at: enrolled_at,
+      primary: false
+    )
+    enrollment.make_primary! if primary
+    enrollment
+  end
+
+  # Unenroll the student from a classroom
+  #
+  # @param classroom [Classroom] the classroom to unenroll from
+  # @param unenrolled_at [DateTime] when the student was unenrolled (defaults to now)
+  # @return [void]
+  def unenroll_from!(classroom, unenrolled_at: Time.current)
+    current_enrollments.for_classroom(classroom).each do |enrollment|
+      enrollment.unenroll!(at: unenrolled_at)
+    end
+  end
+
+  private
+
+  def set_default_email
+    self.email = nil if email.blank?
+  end
+
+  def ensure_portfolio
+    create_portfolio! if portfolio.blank?
+  end
+
+  def create_initial_enrollment
+    # Create initial enrollment based on classroom_id
+    # Set as primary since it's the first enrollment
+    enroll_in!(classroom, enrolled_at: created_at, primary: true)
+  end
+end