using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;
using cfg;
using Obfuz;
using PhxhSDK;
using static Framework.EventManager;

namespace Framework.Condition
{
    [ObfuzIgnore]
    public interface ICondition
    {
        public EventName[] SignalNames { get; }

        /// <summary>
        /// 检查条件是否满足
        /// </summary>
        /// <param name="args"></param>
        /// <returns></returns>
        bool Check(List<float> args);

        /// <summary>
        /// 获取条件参数对应的本地化文本数组
        /// </summary>
        /// <param name="args"></param>
        /// <returns></returns>
        string[] GetArgLocalizations(List<float> args);

        /// <summary>
        /// 获取进度
        /// </summary>
        /// <param name="args"></param>
        /// <returns></returns>
        float GetProgress(List<float> args);
    }

    public class ConditionException : Exception
    {
        public ConditionException(string message) : base(message)
        {
            
        }
    }
    
    public sealed class ConditionManager : Singlenton<ConditionManager>, IInitable
    {
        /// <summary>
        /// 条件前缀
        /// </summary>
        private const string CONDITION_PREFIX = "Condition";
        /// <summary>
        /// 条件描述前缀
        /// </summary>
        private const string CONDITION_DESC_PREFIX = "condition_desc_";
        private const string CONDITION_REGEX = @"\([^)]*\)";
        private const string CONDITION_ARG_REGEX = @"\((.*?)\)";

        //避免GC
        private List<float> _tempConditionArgs = new();
        
        // 缓存条件描述的 key，避免每次拼接字符串产生 GC
        private Dictionary<ConditionType, string> _conditionDescKeyCache;

        private ICondition[] m_conditions;

        #region MainLife
        public void Init()
        {
            m_conditions = new ICondition[(int)ConditionType.Max];
            _conditionDescKeyCache = new Dictionary<ConditionType, string>((int)ConditionType.Max);
            
            foreach (ConditionType conditionType in Enum.GetValues(typeof(ConditionType)))
            {
                if (conditionType == ConditionType.None || conditionType == ConditionType.Max)
                    continue;

                // 预缓存条件描述的 key
                _conditionDescKeyCache[conditionType] = $"{CONDITION_DESC_PREFIX}{conditionType}";
                
                string typeName = $"{CONDITION_PREFIX}{conditionType}";
                Type type = CommonUtilsFramework.GamePlayAssembly.GetType(typeName);
                if (type == null)
                {
                    DebugUtil.LogError($"Cant find Type，name:{typeName}");
                    continue;
                }

                if (Activator.CreateInstance(type) is ICondition condition)
                    m_conditions[(int)conditionType] = condition;
                else
                    DebugUtil.LogError($"cant construct condition,type:{type},please check if your type is correctly implement ICondition");
            }
        }

        public void Release()
        {
            m_conditions = null;
            _tempConditionArgs = null;
            _conditionDescKeyCache = null;
        }
        #endregion

        #region API
        public bool CheckCondition(int conditionID)
        {
            DataCondition conditionCfg = GetConditionCfg(conditionID);
            GetConditionCfgArgs(conditionCfg, ref _tempConditionArgs);

            return CheckCondition(conditionCfg.Type, _tempConditionArgs);
        }

        public bool CheckCondition(string condition)
        {
            string conditionName = Regex.Replace(condition, @"\(.*?\)", string.Empty);

            ConditionType conditionType = GetConditionType(conditionName);
            GetConditionStringArgs(condition, ref _tempConditionArgs);

            return CheckCondition(conditionType, _tempConditionArgs);
        }

        public bool CheckCondition(int[] conditionGroup, bool useAnd = true)
        {
            foreach (var conditionID in conditionGroup)
            {
                var isSuccess = CheckCondition(conditionID);
                if (useAnd)
                {
                    if (!isSuccess)
                    {
                        return false;
                    }
                }
                else
                {
                    if (isSuccess)
                        return true;
                }
            }

            return useAnd;
        }

        public bool CheckCondition(string[] conditionGroups, bool useAnd = true)
        {
            if (null == conditionGroups || 0 == conditionGroups.Length)
                return false;

            foreach (string condition in conditionGroups)
            {
                bool isSuccess = CheckCondition(condition);
                if (useAnd)
                {
                    if (!isSuccess)
                        return false;
                }
                else
                {
                    if (isSuccess)
                        return true;
                }
            }

            return useAnd;
        }

        /// <summary>
        /// 检查条件是否满足条件
        /// </summary>
        /// <param name="conditionType"></param>
        /// <param name="conditionArg"></param>
        /// <returns></returns>
        /// <exception cref="Exception"></exception>
        public bool CheckCondition(ConditionType conditionType, List<float> conditionArg)
        {
            if (m_conditions[(int)conditionType] == null)
                throw new Exception($"condition type is outside of range!condition type:{conditionType}");

            return m_conditions[(int)conditionType].Check(conditionArg);
        }

        /// <summary>
        /// 获取条件参数的本地化文本数组
        /// </summary>
        /// <param name="conditionType"></param>
        /// <param name="listArg"></param>
        /// <returns></returns>
        /// <exception cref="Exception"></exception>
        public string[] GetArgLocalizations(ConditionType conditionType, List<float> listArg)
        {
            ICondition iCondition = m_conditions[(int)conditionType] ?? throw new Exception($"条件类型超出范围！类型:{conditionType}");

            return iCondition.GetArgLocalizations(listArg);
        }

        /// <summary>
        /// 获取条件进度
        /// </summary>
        /// <returns></returns>
        public float GetProgress(ConditionType conditionType, List<float> listArg)
        {
            ICondition iCondition = m_conditions[(int)conditionType] ?? throw new Exception($"条件类型超出范围！类型:{conditionType}");

            return iCondition.GetProgress(listArg);
        }

        /// <summary>
        /// 获取条件进度
        /// </summary>
        /// <returns></returns>
        public float GetProgress(ConditionModifier conditionModifier)
        {
            return GetProgress(conditionModifier.conditionType, conditionModifier._args);
        }

        public EventName[] GetConditionSignal(int conditionID)
        {
            DataCondition conditionCfg = GetConditionCfg(conditionID);
            if (null != conditionCfg)
            {
                return GetConditionSignal(conditionCfg.Type);
            }

            DebugUtil.LogError($"cant find condition!conditionID:{conditionID}");

            return new EventName[1] { EventName.None };
        }

        public ConditionType GetConditionType(string conditionName)
        {
            conditionName = Regex.Replace(conditionName, CONDITION_REGEX, string.Empty);

            if (Enum.TryParse(conditionName, out ConditionType result))
                return result;

            DebugUtil.LogError($"没有该条件类型:{conditionName}");
            return ConditionType.None;
        }

        public EventName[] GetConditionSignal(string conditionName)
        {
            EventName[] eventNames = GetConditionSignal(GetConditionType(conditionName));
            if (null == eventNames)
                DebugUtil.LogError($"cant find condition!conditionName:{conditionName}");

            return eventNames;
        }

        /// <summary>
        /// 获取条件参数
        /// </summary>
        /// <param name="condition"></param>
        /// <param name="_args"></param>
        public void GetConditionStringArgs(string condition, ref List<float> _args)
        {
            _args.Clear();

            MatchCollection matches = Regex.Matches(condition, CONDITION_ARG_REGEX);
            foreach (Match match in matches.Cast<Match>())
            {
                string[] paramStrs = match.Groups[1].Value.Split(',');
                foreach (string paramStr in paramStrs)
                {
                    if (!float.TryParse(paramStr, out float param))
                        continue;

                    _args.Add(param);
                }
            }
        }

        public EventName[] GetConditionSignal(ConditionType conditionType)
        {
            ICondition condition = GetConditionByType(conditionType);
            if (null != condition)
                return condition.SignalNames;

            DebugUtil.LogError($"cant find condition!conditionType:{conditionType}");

            return null;
        }

        #region 获取条件本地化
        public string GetConditionLocalization(int conditionID)
        {
            var conditionCfg = GetConditionCfg(conditionID);
            if (conditionCfg != null)
            {
                GetConditionCfgArgs(conditionCfg, ref _tempConditionArgs);
                return GetConditionLocalization(conditionCfg.Type, _tempConditionArgs);
            }

            DebugUtil.LogError($"cant find condition!conditionID:{conditionID}");
            return null;
        }

        public string GetConditionLocalization(string condition)
        {
            string conditionName = Regex.Replace(condition, CONDITION_ARG_REGEX, string.Empty);

            GetConditionStringArgs(condition, ref _tempConditionArgs);

            return GetConditionLocalization(GetConditionType(conditionName), _tempConditionArgs);
        }

        public string GetConditionLocalization(ConditionType conditionType, List<float> args)
        {
            // 使用缓存的 key，避免每次拼接字符串产生 GC
            if (!_conditionDescKeyCache.TryGetValue(conditionType, out string key))
            {
                // 回退方案，理论上不应该走到这里
                key = $"{CONDITION_DESC_PREFIX}{conditionType}";
            }

            return StringManager.Instance.GetLocalizeTextByKeyAndList(key, GetArgLocalizations(conditionType, args));
        }

        public string GetConditionLocalization(ConditionModifier conditionModifier)
        {
            return GetConditionLocalization(conditionModifier.conditionType, conditionModifier._args);
        }
        #endregion
        #endregion

        #region InnerFunction

        private DataCondition GetConditionCfg(int conditionID)
        {
            return TableManager.Instance.Tables.ConditionConfig.Get(conditionID);
        }

        private ICondition GetConditionByType(ConditionType conditionType)
        {
            var index = (int)conditionType;
            if (index < 0 || index >= m_conditions.Length)
            {
                DebugUtil.LogError("cant find condition!");
                return null;
            }

            return m_conditions[index];
        }

        private void GetConditionCfgArgs(DataCondition conditionCfg, ref List<float> _args)
        {
            _args.Clear();
            _args.Add(conditionCfg.Param1);
            _args.Add(conditionCfg.Param2);
            _args.Add(conditionCfg.Param3);
        }
        #endregion
    }
}