using System;
using System.Collections.Generic;
using System.Linq;
using Continentis.MainGame.Character;
using Continentis.MainGame.Equipment;
using SLSFramework.General;
using SLSFramework.UModAssistance;
using UniRx;
using UnityEngine;

namespace Continentis.MainGame.Card
{
    public abstract partial class CardLogicBase
    {
        [Header("Reference")] 
        public CardInstance card;
        public CardData cardData => card.cardData;
        public CharacterBase user => card.user;
        public HashSet<CardLogicComponentBase> logicComponents { get; private set; }

        /// <summary>
        /// 生成卡牌逻辑实例
        /// </summary>
        public static CardLogicBase GenerateCardLogic(CardData data)
        {
            string typeID = ModManager.GetTypeID(data.modName, "Cards", data.categoryName, data.className);
            Type logicType = ModManager.GetType(typeID);
            
            if(logicType == null) 
            {
                Debug.LogError($"Card class '{typeID}' not found in assemblies.");
                return null;
            }
            
            if (Activator.CreateInstance(logicType) is CardLogicBase cardLogic)
            {
                return cardLogic;
            }
            
            Debug.LogError($"Card class '{typeID}' not found or could not be instantiated.");
            return null;
        }
        
        public virtual void Initialize(CardInstance cardInstance)
        {
            card = cardInstance;
            logicComponents = new HashSet<CardLogicComponentBase>();
            card.eventSubmodule.onTargeting += TargetingEffect;
            card.eventSubmodule.onUntargeting += UntargetingEffect;
        }

        public virtual void SetUpLogicComponents()
        {
            
        }
        
        public T AddLogicComponent<T>() where T : CardLogicComponentBase, new()
        {
            if (logicComponents.Any(component => component is T))
            {
                Debug.LogWarning($"Card {card.cardData.className} already has component of type {typeof(T)}, cannot add duplicate.");
                return null;
            }
            else
            {
                T component = new T();
                component.Initialize(this);
                logicComponents.Add(component);
                return component;
            }
        }
        
        public T LogicComponent<T>() where T : CardLogicComponentBase
        {
            return logicComponents.OfType<T>().FirstOrDefault();
        }

        public virtual void ApplyAttributeChangesByCard()
        {
            
        }
        
        public virtual List<CommandBase> PlayEffect(List<CharacterBase> targetList)
        {
            return null;
        }

        public virtual void AfterPlayEffect(List<CharacterBase> targetList)
        {
            
        }
    }
    
    #region Attributes 
    public partial class CardLogicBase
    {
        /// <summary>
        /// 设置可变属性值
        /// </summary>
        /// <param name="attributeName">属性名，通常为</param>
        /// <param name="additive">是否为叠加，true为叠加，false为覆盖，true时，originalValue为外部传入值</param>
        /// <param name="originalValue">原始伤害值，仅在additive为true时有效，否则此值被覆盖为BaseAttribute</param>
        /// <param name="baseOffset">伤害增量</param>
        public void SetVariableAttribute(string attributeName, int baseOffset, bool additive = false, int originalValue = 0)
        {
             card.SetVariableAttribute(attributeName, baseOffset, additive, originalValue);
        }
        
        /// <summary>
        /// 检查卡牌是否具有某属性
        /// </summary>
        public bool HasAttribute(string attributeName)
        {
            return card.HasAttribute(attributeName);
        }
        
        /// <summary>
        /// 获取卡牌的属性值
        /// </summary>
        public int GetAttribute(string attributeName, int defaultValue = 0)
        {
            return card.GetAttribute(attributeName, defaultValue);
        }
        
        public float GetRawAttribute(string attributeName, float defaultValue = 0)
        {
            return card.GetRawAttribute(attributeName, defaultValue);
        }
        
        /// <summary>
        /// 设置卡牌的属性值
        /// </summary>
        public void SetAttribute(string attributeName, int value)
        {
            card.SetAttribute(attributeName, value);
        }
        
        /// <summary>
        /// 设置卡牌的属性值
        /// </summary>
        public void SetAttribute(string attributeName, float value)
        {
            card.SetAttribute(attributeName, value);
        }
        
        /// <summary>
        /// 修改卡牌的属性值
        /// </summary>
        public void ModifyAttribute(string attributeName, int delta)
        {
            card.ModifyAttribute(attributeName, delta);
        }
    }
    #endregion
    
    #region Command

    public partial class CardLogicBase
    {
        /// <summary>
        /// 创建一个命令组，组内命令按顺序执行
        /// </summary>
        /// <param name="commands">命令模板</param>
        protected CommandGroup SingleCommandGroup(params CommandBase[] commands)
        {
            return SingleCommandGroup(ExecutionMode.Parallel, commands);
        }

        /// <summary>
        /// 创建一个命令组，组内命令按指定顺序执行
        /// </summary>
        /// <param name="executionMode">执行模式，顺序或并行</param>
        /// <param name="commands">命令模板</param>
        protected virtual CommandGroup SingleCommandGroup(
            ExecutionMode executionMode = ExecutionMode.Parallel, params CommandBase[] commands)
        {
            CommandGroup singleGroup = new CommandGroup(executionMode);

            foreach (CommandBase template in commands)
            {
                singleGroup.AddCommand(template.Clone());
            }

            return singleGroup;
        }

        /// <summary>
        /// 对目标列表中的每个目标，依次执行一组有参函数命令，每组命令的参数为targetList中的个体，主体Group顺序执行，单体Group并行执行。
        /// </summary>
        /// <param name="targetList">目标列表</param>
        /// <param name="singleCommands">单体命令模板</param>
        protected CommandGroup TargetListCommandGroup(List<CharacterBase> targetList,
            params CommandBase[] singleCommands)
        {
            return TargetListCommandGroup(targetList, ExecutionMode.Sequential, ExecutionMode.Parallel,
                singleCommands);
        }

        /// <summary>
        /// 对目标列表中的每个目标，依次执行一组有参函数命令，每组命令的参数为targetList中的个体。
        /// </summary>
        /// <param name="targetList">目标列表</param>
        /// <param name="mainExecutionMode">主体Group（各个目标）的执行顺序</param>
        /// <param name="singleExecutionMode">单体Group（一个目标中指令）的执行顺序</param>
        /// <param name="singleCommands">单体命令模板</param>
        protected virtual CommandGroup TargetListCommandGroup(
            List<CharacterBase> targetList, ExecutionMode mainExecutionMode = ExecutionMode.Sequential,
            ExecutionMode singleExecutionMode = ExecutionMode.Parallel,
            params CommandBase[] singleCommands)
        {
            CommandGroup mainGroup = new CommandGroup(mainExecutionMode);

            foreach (CharacterBase target in targetList)
            {
                CommandGroup singleGroup = new CommandGroup(singleExecutionMode);

                foreach (CommandBase template in singleCommands)
                {
                    CommandBase clone = template.Clone();

                    List<CommandBase> allCommands = new List<CommandBase>();

                    if (clone is CommandGroup group)
                    {
                        allCommands.AddRange(group.GetAllCommands(true));
                    }
                    else
                    {
                        allCommands.Add(clone);
                    }

                    foreach (CommandBase cmd in allCommands)
                    {
                        cmd.selfContext.context["Target"] = target;
                    }

                    singleGroup.AddCommand(clone);
                }

                mainGroup.AddCommand(singleGroup);
            }

            return mainGroup;
        }
    }
    #endregion
    
    #region Attack
    public partial class CardLogicBase
    {
        /// <summary>
        /// 获取最终伤害
        /// </summary>
        /// <param name="target">目标</param>
        /// <param name="elementalTags">元素标签，若为null则使用卡牌的元素标签</param>
        public virtual int GetTargetedFinalDamage(CharacterBase target, List<string> elementalTags = null)
        {
            return GetFinalDamage(target, elementalTags, out _, out _, out _, out _);
        }

        /// <summary>
        /// 获取最终伤害
        /// </summary>
        /// <param name="elementalTags">元素标签，若为null则使用卡牌的元素标签</param>
        public virtual int GetNoTargetFinalDamage(List<string> elementalTags = null)
        {
            return GetFinalDamage(null, elementalTags, out _, out _, out _, out _);
        }
        

        protected virtual int GetFinalDamage(CharacterBase target, List<string> elementalTags,
            out float baseDamageAfterOffset, out float elementalMultiplier, 
            out float magicMultiplier, out float finalMultiplier)
        {
            bool haveTarget = target != null;
            
            elementalTags ??= card.GetElementalKeywords();

            //----计算基础伤害增量----
            int physicsOffset = 0;
            if (card.HasKeyword("Physics") || card.HasKeyword("Slash") || card.HasKeyword("Prick") || card.HasKeyword("Strike"))
            {
                physicsOffset = user.GetAttribute("PhysicsDamageDealtOffset"); //物理伤害基础增量
            }

            int magicOffset = 0;
            if (card.HasKeyword("Magic") || card.HasKeyword("Arcane") || card.HasKeyword("Sorcery"))
            {
                magicOffset = user.GetAttribute("MagicDamageDealtOffset"); //魔法伤害基础增量
            }

            //----计算伤害因数----
            
            //计算元素伤害加成，注意，“物理Physics”也是一种元素，因此下方没有“通用物理伤害加成”的计算
            elementalMultiplier = 1; 
            foreach (string element in elementalTags)
            {
                float targetGain = haveTarget ? target.GetRawAttribute(element + "DamageGainMultiplier", 1) : 1;
                
                elementalMultiplier *= user.GetRawAttribute(element + "DamageDealtMultiplier", 1) * targetGain;
            }

            //计算通用的魔法伤害加成
            magicMultiplier = 1;
            if (card.HasKeyword("Magic") || card.HasKeyword("Arcane") || card.HasKeyword("Sorcery"))
            {
                float targetGain = haveTarget ? target.GetRawAttribute("MagicDamageGainMultiplier", 1) : 1;
                 
                magicMultiplier = user.GetRawAttribute("MagicDamageDealtMultiplier", 1) * targetGain;
            }
            
            //计算最终伤害加成
            float targetFinalGain = haveTarget ? target.GetRawAttribute("FinalDamageGainMultiplier", 1) : 1;
            finalMultiplier = user.GetRawAttribute("FinalDamageDealtMultiplier", 1) * targetFinalGain;

            //----计算最终伤害----
            baseDamageAfterOffset = card.attributeSubmodule.GetCurrentAttribute("Damage") + physicsOffset + magicOffset;
            float finalDamage = baseDamageAfterOffset * elementalMultiplier * magicMultiplier * finalMultiplier;

            return Mathf.RoundToInt(finalDamage);
        }
    }
    #endregion

    #region Buffs
    public partial class CardLogicBase
    {
        /// <summary>
        /// 创建一个角色战斗Buff实例
        /// 注意，此函数依赖ModManager的类型注册功能，请确保在Mod加载时已注册对应Buff类型
        /// 此函数中的T并不是原型参数，而是获取Mod中注册的类型用的
        /// </summary>
        public T CreateCharacterBuff<T>(params object[] parameters) where T :CharacterCombatBuffBase
        {
            string buffTypeID = ModManager.GetTypeID(typeof(T));
            
            if (string.IsNullOrEmpty(buffTypeID))
            {
                Debug.LogError($"Failed to get buff name for type {typeof(T).FullName}");
                return null;
            }
            
            return ModManager.CreateInstance<T>(buffTypeID, parameters);
        }
        
        public T CreateCharacterBuff<T>(string buffTypeID, params object[] parameters) where T :CharacterCombatBuffBase
        {
            if (string.IsNullOrEmpty(buffTypeID))
            {
                Debug.LogError($"Failed to get buff name for type {typeof(T).FullName}");
                return null;
            }
            
            return ModManager.CreateInstance<T>(buffTypeID, parameters);
        }
        
        /// <summary>
        /// 创建一个卡牌战斗Buff实例
        /// 注意，此函数依赖ModManager的类型注册功能，请确保在Mod加载时已注册对应Buff类型
        /// 此函数中的T并不是原型参数，而是获取Mod中注册的类型用的
        /// </summary>
        public T CreateCardBuff<T>(params object[] parameters) where T :CardBuffBase
        {
            string buffTypeID = ModManager.GetTypeID(typeof(T));
            
            if (string.IsNullOrEmpty(buffTypeID))
            {
                Debug.LogError($"Failed to get buff name for type {typeof(T).FullName}");
                return null;
            }
            
            return ModManager.CreateInstance<T>(buffTypeID, parameters);
        }
        
        
        public T CreateCardBuff<T>(string buffTypeID, params object[] parameters) where T :CardBuffBase
        {
            if (string.IsNullOrEmpty(buffTypeID))
            {
                Debug.LogError($"Failed to get buff name for type {typeof(T).FullName}");
                return null;
            }
            
            return ModManager.CreateInstance<T>(buffTypeID, parameters);
        }
    }
    #endregion
    
    public abstract partial class CardLogicBase
    {
        /// <summary>
        /// 获取衍生卡牌数据
        /// </summary>
        public CardData GetDerivativeCardData(int index)
        {
            return ModManager.GetData<CardData>(cardData.derivativeCardDataRefs[index]);
        }
        
        /// <summary>
        /// 获取衍生卡牌数据
        /// </summary>
        public CardData GetDerivativeCardData(string dataName)
        {
            if (cardData.derivativeCardDataRefs.Contains(dataName))
            {
                return ModManager.GetData<CardData>(dataName);
            }

            Debug.LogError($"Card {cardData.className} does not contain derivative card data '{dataName}'.");
            return null;
        }
        
        /// <summary>
        /// 选中目标时触发的效果，效果在所有逻辑组件的Targeting之前执行（在SetUp函数生成EventSubmodule的时候）。
        /// 如果必须需要在逻辑组件之后执行，请重写Initialize函数。
        /// </summary>
        public virtual void TargetingEffect(CharacterBase target)
        {
            
        }

        /// <summary>
        /// 取消选中目标时触发的效果，效果在所有逻辑组件的Untargeting之前执行（在SetUp函数生成EventSubmodule的时候）。
        /// 如果必须需要在逻辑组件之后执行，请重写Initialize函数。
        /// </summary>
        public virtual void UntargetingEffect()
        {
            
        }
    }

    /// <summary>
    /// 卡牌逻辑组件基类接口
    /// 注意，所有的子接口需要实现的函数：
    /// ComponentTargetingEffect：此牌瞄准目标时调用
    /// ComponentUntargetingEffect：此牌取消瞄准目标时调用
    /// </summary>
    public abstract class CardLogicComponentBase
    {
        protected CardLogicBase mainLogic;
        protected CardInstance card => mainLogic.card;
        protected CharacterBase user => card.user;
        protected CombatTeam usingTeam => card.usingTeam;
        
        public virtual void Initialize(CardLogicBase card)
        {
            this.mainLogic = card;
            this.card.eventSubmodule.onTargeting += TargetingEffect;
            this.card.eventSubmodule.onUntargeting += UntargetingEffect;
        }

        protected virtual void TargetingEffect(CharacterBase target)
        {
            
        }

        protected virtual void UntargetingEffect()
        {
            
        }
    }
}