VRSystem/EasyTemplate.Tool/Util/VRRules.cs

namespace EasyTemplate.Tool
{
    /// <summary>
    /// 预警告计算规则配置（对应 C++ VR::rules 命名空间）
    /// </summary>
    public static class VRRules
    {
        private static bool? _refReachCount;
        private static int? _refCount;
        private static int? _refPrewarningIndex;
        private static int? _refPrewarningIndexAlert;
        private static bool? _bCountAllDay;

        /// <summary>
        /// 北京模式：是否使用达标计数模式
        /// 为 true 时：超标率>=阈值 且 总笔数>=5 时计为连续一天
        /// 为 false 时：使用标准模式（总笔数>=ref_count 时才检查超标率）
        /// </summary>
        public static bool RefReachCount
        {
            get
            {
                var value = Setting.Get<bool?>("VRRules:RefReachCount");
                return _refReachCount ?? (value ?? false);
            }
            set => _refReachCount = value;
        }

        /// <summary>
        /// 标准模式下的参考笔数阈值（通常为 5）
        /// 当累计总笔数达到此值时才进行超标率判断
        /// </summary>
        public static int RefCount
        {
            get
            {
                var value = Setting.Get<int?>("VRRules:RefCount");
                return _refCount ?? (value ?? 5);
            }
            set => _refCount = value;
        }

        /// <summary>
        /// 预报警超标率阈值（%）
        /// 当累计超标率>=此值时判定为超标
        /// </summary>
        public static int RefPrewarningIndex
        {
            get
            {
                var value = Setting.Get<int?>("VRRules:RefPrewarningIndex");
                return _refPrewarningIndex ?? (value ?? 20);
            }
            set => _refPrewarningIndex = value;
        }

        /// <summary>
        /// 预报警严重超标率阈值（%）
        /// 当累计严重超标率>=此值时判定为严重超标
        /// </summary>
        public static int RefPrewarningIndexAlert
        {
            get
            {
                var value = Setting.Get<int?>("VRRules:RefPrewarningIndexAlert");
                return _refPrewarningIndexAlert ?? (value ?? 50);
            }
            set => _refPrewarningIndexAlert = value;
        }

        /// <summary>
        /// 浙江中石化特殊规则：是否在不足 5 笔时也延续预警状态
        /// 为 true 时：即使 acc_total < ref_count，也会延续之前的连续天数
        /// </summary>
        public static bool BCountAllDay
        {
            get
            {
                var value = Setting.Get<bool?>("VRRules:BCountAllDay");
                return _bCountAllDay ?? (value ?? false);
            }
            set => _bCountAllDay = value;
        }

        /// <summary>
        /// 从配置文件加载所有规则
        /// </summary>
        public static void LoadFromConfig()
        {
            _refReachCount = null;
            _refCount = null;
            _refPrewarningIndex = null;
            _refPrewarningIndexAlert = null;
            _bCountAllDay = null;

            // 触发一次 getter 以重新读取配置
            _ = RefReachCount;
            _ = RefCount;
            _ = RefPrewarningIndex;
            _ = RefPrewarningIndexAlert;
            _ = BCountAllDay;
        }

        /// <summary>
        /// 手动设置所有规则（用于代码动态配置）
        /// </summary>
        public static void SetRules(bool refReachCount, int refCount, int refPrewarningIndex, 
            int refPrewarningIndexAlert, bool bCountAllDay)
        {
            _refReachCount = refReachCount;
            _refCount = refCount;
            _refPrewarningIndex = refPrewarningIndex;
            _refPrewarningIndexAlert = refPrewarningIndexAlert;
            _bCountAllDay = bCountAllDay;
        }
    }
}