Improve dynamic question learning loop

2026-07-23 16:50:53 -05:00
parent c91e70deb5
commit 32c455bba0
14 changed files with 422 additions and 16 deletions
@@ -0,0 +1,22 @@
+namespace QuestionsApi.Services;
+
+public static class DynamicReviewPolicy
+{
+    private static readonly int[] IntervalsDays = [1, 3, 7, 21, 45];
+
+    public static DateTime FirstDue(DateTime nowUtc) => nowUtc.AddDays(IntervalsDays[0]);
+
+    public static (int Stage, DateTime? DueUtc, bool Mastered) AfterReview(
+        int currentStage,
+        bool isCorrect,
+        DateTime nowUtc)
+    {
+        if (!isCorrect)
+            return (0, FirstDue(nowUtc), false);
+
+        var nextStage = Math.Clamp(currentStage + 1, 1, IntervalsDays.Length);
+        if (nextStage >= IntervalsDays.Length)
+            return (nextStage, null, true);
+        return (nextStage, nowUtc.AddDays(IntervalsDays[nextStage]), false);
+    }
+}