Interface DiscountCode

interface DiscountCode {
    id: number;
    code: string;
    description: string;
    discount_type: "percentage" | "fixed";
    discount_value: string;
    minimum_order_amount: string;
    maximum_discount: string | null;
    is_active: boolean;
    valid_from: string;
    valid_until: string | null;
    usage_limit: number | null;
    times_used: number;
}