diff --git a/internal/merch/helper.go b/internal/merch/helper.go
index 95fdec2..68396e2 100644
--- a/internal/merch/helper.go
+++ b/internal/merch/helper.go
@@ -3,6 +3,8 @@ package merch
 import (
 	"github.com/gin-gonic/gin"
 	log "github.com/sirupsen/logrus"
+	"strconv"
+	"strings"
 	"time"
 )
 
@@ -31,3 +33,12 @@ func getPeriod(days int) time.Time {
 	}
 	return time.Now().UTC().Add(-(time.Duration(days) * time.Hour * 24))
 }
+
+func getDays(c *gin.Context) int {
+	daysQuery := strings.ToLower(c.Query("days"))
+	days, err := strconv.Atoi(daysQuery)
+	if err != nil {
+		days = 7
+	}
+	return days
+}