using System;
using System.Collections.Generic;
using System.Linq;
using Activity.Condition;

namespace cfg
{
    public partial class FishingEvent
    {
        private List<IConditionChecker> _conditionCheckers;
        private Dictionary<Type, List<IConditionChecker>> _checkersByDataType;

        /// <summary>
        /// 获取所有条件检查器
        /// </summary>
        public List<IConditionChecker> GetConditionCheckers()
        {
            if (_conditionCheckers != null) return _conditionCheckers;
            _conditionCheckers=new List<IConditionChecker>();
            _conditionCheckers.AddRange(ConditionCheckerFactory.GetAllCommonCheckers());
            _conditionCheckers.AddRange(ConditionList.Select(condition =>
                    ConditionCheckerFactory.CreateCheckerByConditionType(condition.Condition))
                .Where(checker => checker != null)); 
            _conditionCheckers.Sort((x, y)=>x.Priority.CompareTo(y.Priority));
            return _conditionCheckers;
        }

        /// <summary>
        /// 获取关心指定数据类型的检查器（按数据类型预先索引）
        /// </summary>
        public List<IConditionChecker> GetCheckersForDataType(Type dataType)
        {
            EnsureCheckersIndexed();
            return _checkersByDataType.GetValueOrDefault(dataType);
        }

        /// <summary>
        /// 确保检查器已按数据类型索引
        /// </summary>
        private void EnsureCheckersIndexed()
        {
            if (_checkersByDataType != null) return;

            _checkersByDataType = new Dictionary<Type, List<IConditionChecker>>();

            foreach (var checker in GetConditionCheckers())
            {
                // 某些检查器（如时间、ABTest）不会关心任何数据类型，CareDataChangeWithType 可能为 null
                if (checker.CareDataChangeWithType == null) continue;

                foreach (var dataType in checker.CareDataChangeWithType)
                {
                    if (!_checkersByDataType.ContainsKey(dataType))
                        _checkersByDataType[dataType] = new List<IConditionChecker>();

                    _checkersByDataType[dataType].Add(checker);
                }
            }
        }
    }
}