add verify user privileges utils

utils/verifyPrivilege.go

@@ -0,0 +1,43 @@
+package utils
+
+import (
+	"penahub.gitlab.yandexcloud.net/backend/quiz/common.git/model"
+	"time"
+)
+
+func VerifyUserPrivileges(currentPrivileges []model.ShortPrivilege) bool {
+	if HasQuizCntPrivilege(currentPrivileges) {
+		return true
+	}
+
+	if HasUnlimitedPrivilege(currentPrivileges) {
+		return true
+	}
+
+	return false
+}
+
+func HasQuizCntPrivilege(privileges []model.ShortPrivilege) bool {
+	for _, privilege := range privileges {
+		if privilege.PrivilegeID == "quizCnt" && privilege.Amount > 0 {
+			return true
+		}
+	}
+	return false
+}
+
+func HasUnlimitedPrivilege(privileges []model.ShortPrivilege) bool {
+	for _, privilege := range privileges {
+		if privilege.PrivilegeID == "quizUnlimTime" {
+			return IsPrivilegeExpired(privilege)
+		}
+	}
+	return false
+}
+
+func IsPrivilegeExpired(privilege model.ShortPrivilege) bool {
+	expirationTime := privilege.CreatedAt.Add(time.Duration(privilege.Amount) * 24 * time.Hour)
+
+	currentTime := time.Now()
+	return currentTime.Before(expirationTime)
+}