namespace SimpleAdmin.Application;

/// <summary>
/// 签署材料模板版本的时间有效性规则。
/// </summary>
internal static class ContractTemplateVersionValidity
{
    internal static void ValidateRange(DateTime? effectiveAt, DateTime? expiresAt)
    {
        if (effectiveAt.HasValue && expiresAt.HasValue && expiresAt.Value <= effectiveAt.Value)
            throw Oops.Bah("失效时间必须晚于生效时间");
    }

    internal static bool IsAvailable(ObContractTemplateVersion version, DateTime now)
    {
        return version != null
               && version.VersionStatus == ContractTemplateVersionStatus.Enabled
               && (!version.EffectiveDate.HasValue || version.EffectiveDate.Value <= now)
               && (!version.ExpiryDate.HasValue || version.ExpiryDate.Value > now);
    }
}