chore: init commit

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

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

@@ -0,0 +1,68 @@
+# frozen_string_literal: true
+
+class GradeEntry < ApplicationRecord
+  belongs_to :grade_book
+  belongs_to :user
+
+  delegate :username, to: :user
+
+  EARNINGS_PER_DAY_ATTENDANCE = 20
+  EARNINGS_FOR_A_GRADE = 3_00
+  EARNINGS_FOR_B_GRADE = 2_00
+  EARNINGS_FOR_IMPROVED_GRADE = 2_00
+  EARNINGS_FOR_PERFECT_ATTENDANCE = 1_00
+
+  GRADE_OPTIONS = ["A+", "A", "A-", "B+", "B", "B-", "C+", "C", "C-", "D", "F"].freeze
+
+  def earnings_for_attendance
+    return 0 if attendance_days.blank?
+
+    attendance_days * EARNINGS_PER_DAY_ATTENDANCE
+  end
+
+  def earnings_for_math
+    grade_based_earnings(math_grade)
+  end
+
+  def earnings_for_reading
+    grade_based_earnings(reading_grade)
+  end
+
+  def attendance_perfect_earnings
+    return 0 unless is_perfect_attendance
+
+    EARNINGS_FOR_PERFECT_ATTENDANCE
+  end
+
+  def math_improvement_earnings(previous_entry)
+    return 0 unless previous_entry
+    return 0 if math_grade.blank? || previous_entry.math_grade.blank?
+
+    improved_grade?(math_grade, previous_entry.math_grade) ? EARNINGS_FOR_IMPROVED_GRADE : 0
+  end
+
+  def reading_improvement_earnings(previous_entry)
+    return 0 unless previous_entry
+    return 0 if reading_grade.blank? || previous_entry.reading_grade.blank?
+
+    improved_grade?(reading_grade, previous_entry.reading_grade) ? EARNINGS_FOR_IMPROVED_GRADE : 0
+  end
+
+  private
+
+  def grade_based_earnings(grade)
+    case grade
+    when "A+", "A", "A-"
+      EARNINGS_FOR_A_GRADE
+    when "B+", "B", "B-"
+      EARNINGS_FOR_B_GRADE
+    else
+      0
+    end
+  end
+
+  def improved_grade?(current_grade,
+                      previous_grade)
+    GRADE_OPTIONS.index(current_grade) < GRADE_OPTIONS.index(previous_grade)
+  end
+end