Rework bolt interface

points.go

@@ -7,32 +7,24 @@ import (
 	"go.etcd.io/bbolt"
 )
 
-func reward(id string) (int, error) {
-	var points int
+func setPoints(id string, amount int) error {
 	if err := POINTS_DB.Update(func(tx *bbolt.Tx) error {
 		b, err := tx.CreateBucketIfNotExists([]byte("points"))
 		if err != nil {
 			return fmt.Errorf("error creating bucket: %w", err)
 		}
 
-		var oldPoints uint64
-		oldPointsRaw := b.Get([]byte(id))
-		if oldPointsRaw != nil {
-			oldPoints = binary.BigEndian.Uint64(b.Get([]byte(id)))
-			points = int(oldPoints) + REWARD
-		}
-
-		newPoints := binary.BigEndian.AppendUint64([]byte{}, oldPoints+uint64(REWARD))
-		if err := b.Put([]byte(id), newPoints); err != nil {
-			return fmt.Errorf("error putting new score: %w", err)
+		n := binary.BigEndian.AppendUint64([]byte{}, uint64(amount))
+		if err := b.Put([]byte(id), n); err != nil {
+			return fmt.Errorf("error setting points: %w", err)
 		}
 
 		return nil
 	}); err != nil {
-		return points, fmt.Errorf("error in transaction: %w", err)
+		return fmt.Errorf("error in transaction: %w", err)
 	}
 
-	return points, nil
+	return nil
 }
 
 func getPoints(id string) (int, error) {
@@ -43,8 +35,8 @@ func getPoints(id string) (int, error) {
 			return fmt.Errorf("error creating bucket: %w", err)
 		}
 
-		oldScoreRaw := b.Get([]byte(id))
-		if oldScoreRaw != nil {
+		n := b.Get([]byte(id))
+		if n != nil {
 			points = int(binary.BigEndian.Uint64(b.Get([]byte(id))))
 		}