using ArachnaeSwarm;
using RimWorld;
using System.Collections.Generic;
using Verse;
using UnityEngine;

namespace ArachnaeSwarm
{
    public enum GestaltNodeType
    {
        HiveNode,
        OverlordNode
    }

    public class HediffComp_GestaltNode : HediffComp
    {
        private GestaltNodeType? cachedNodeType;
        private Pawn_GestaltTracker tracker;
        private bool wasConnected = false; // 缓存连接状态，避免每帧都调整严重性
        
        // === 新增字段 ===
        /// <summary>
        /// 生成时间戳（ticks），用于延迟计算
        /// </summary>
        private int spawnTimestamp = -1;
        
        /// <summary>
        /// 是否已经初始化完成（延迟后）
        /// </summary>
        private bool isInitialized = false;
        
        /// <summary>
        /// 延迟时间（ticks），默认1秒
        /// </summary>
        private const int DELAY_TICKS = 60;
        
        // === 属性 ===
        
        /// <summary>
        /// 获取节点类型
        /// </summary>
        public GestaltNodeType NodeType
        {
            get
            {
                if (!cachedNodeType.HasValue)
                {
                    HediffCompProperties_GestaltNode props = this.props as HediffCompProperties_GestaltNode;
                    cachedNodeType = props?.nodeType ?? GestaltNodeType.HiveNode;
                }
                return cachedNodeType.Value;
            }
        }
        
        /// <summary>
        /// 是否已经过了生成延迟期
        /// </summary>
        public bool IsPastSpawnDelay
        {
            get
            {
                // OverlordNode 不需要延迟
                if (NodeType == GestaltNodeType.OverlordNode)
                    return true;
                    
                // 如果已经初始化完成，直接返回true
                if (isInitialized)
                    return true;
                    
                // 如果还没有记录生成时间，记录当前时间
                if (spawnTimestamp < 0)
                    return false;
                    
                // 检查是否已经过了延迟期
                return Find.TickManager.TicksGame >= spawnTimestamp + DELAY_TICKS;
            }
        }
        
        /// <summary>
        /// 获取 GestaltTracker
        /// </summary>
        public Pawn_GestaltTracker GestaltTracker
        {
            get
            {
                var pawn = Pawn;
                if (pawn == null)
                {
                    return tracker;
                }

                CompGestalt comp = pawn.TryGetComp<CompGestalt>();
                if (comp != null)
                {
                    return comp.GestaltTracker;
                }
                 
                if (tracker == null && NodeType == GestaltNodeType.OverlordNode)
                {
                    tracker = new Pawn_GestaltTracker(pawn);
                }
                return tracker;
            }
        }
        
        // === 生命周期方法 ===
        
        public override void CompPostMake()
        {
            base.CompPostMake();
            
            // 记录生成时间戳
            spawnTimestamp = Find.TickManager.TicksGame;
            
            // 如果是HiveNode，初始化时设置较低的严重性，延迟后再计算
            if (NodeType == GestaltNodeType.HiveNode)
            {
                // 设置初始严重性为0.5（未连接状态）
                if (parent != null)
                {
                    parent.Severity = 0.5f;
                }
            }
            else
            {
                // OverlordNode 立即初始化
                isInitialized = true;
            }
        }
        
        public override void CompPostTick(ref float severityAdjustment)
        {
            base.CompPostTick(ref severityAdjustment);

            var pawn = Pawn;
            if (pawn == null)
            {
                return;
            }
            
            // 检查是否已经过了生成延迟期
            if (!IsPastSpawnDelay)
            {
                // 还在延迟期内，不执行任何计算
                return;
            }
            
            // 延迟期过后，执行初始化
            if (!isInitialized)
            {
                InitializeAfterDelay();
            }
            
            // 正常的Tick逻辑
            if (NodeType == GestaltNodeType.HiveNode)
            {
                // 定期更新严重性
                if (Find.TickManager.TicksGame % 60 == 0) // 每60tick检查一次
                {
                    UpdateSeverityBasedOnConnection();
                }
                
                // 定期寻找 OverlordNode
                if (pawn.IsColonist &&
                    pawn.Spawned &&
                    !pawn.Dead &&
                    Find.TickManager.TicksGame % 250 == 0)
                {
                    TryFindOverlord();
                }
            }
        }
        
        /// <summary>
        /// 延迟期过后初始化
        /// </summary>
        private void InitializeAfterDelay()
        {
            var pawn = Pawn;
            if (pawn == null)
                return;
                
            // 标记为已初始化
            isInitialized = true;
            
            // 如果是HiveNode，检查当前连接状态
            if (NodeType == GestaltNodeType.HiveNode)
            {
                // 延迟后第一次更新严重性
                UpdateSeverityBasedOnConnection();
                
                // 延迟后第一次尝试寻找Overlord
                if (pawn.IsColonist && pawn.Spawned && !pawn.Dead)
                {
                    TryFindOverlord();
                }
                
                Log.Message($"[GestaltNode] {pawn.LabelShort} (HiveNode) 延迟初始化完成，当前连接状态: {IsConnectedToOverlord()}");
            }
        }
        
        /// <summary>
        /// 根据连接状态更新 Hediff 严重性
        /// </summary>
        public void UpdateSeverityBasedOnConnection()
        {
            if (NodeType != GestaltNodeType.HiveNode || parent == null)
                return;

            var pawn = Pawn;
            if (pawn?.health == null)
            {
                return;
            }
                
            bool isConnected = IsConnectedToOverlord();
            
            // 只有连接状态改变时才更新，避免每帧都设置
            if (isConnected != wasConnected)
            {
                float targetSeverity = isConnected ? 1.5f : 0.5f;
                
                // 平滑过渡到目标严重性
                if (Mathf.Abs(parent.Severity - targetSeverity) > 0.01f)
                {
                    parent.Severity = targetSeverity;
                }
                
                wasConnected = isConnected;
                
                // 如果严重性改变，需要重新计算Pawn的能力
                pawn.health.Notify_HediffChanged(parent);
            }
        }
        
        /// <summary>
        /// 检查是否连接到 Overlord
        /// </summary>
        public bool IsConnectedToOverlord()
        {
            return Pawn.GetOverlord() != null;
        }
        
        /// <summary>
        /// 尝试寻找 Overlord
        /// </summary>
        public void TryFindOverlord()
        {
            // 如果还没有过延迟期，不执行
            if (!IsPastSpawnDelay)
                return;
                
            // 如果已经有Overlord，更新连接状态并返回
            var pawn = Pawn;
            if (pawn == null || pawn.Dead || pawn.Destroyed)
            {
                return;
            }

            if (IsConnectedToOverlord())
            {
                UpdateSeverityBasedOnConnection();
                return;
            }
            
            // 如果Pawn当前不在地图上，无法寻找Overlord
            if (pawn.Map == null)
            {
                return;
            }
            
            // 在殖民地寻找可用的OverlordNode
            Pawn bestOverlord = null;
            float bestScore = -1f;
            
            foreach (Pawn candidate in pawn.Map.mapPawns.FreeColonists)
            {
                HediffComp_GestaltNode nodeComp = candidate.GetGestaltNodeComp();
                if (nodeComp?.NodeType == GestaltNodeType.OverlordNode &&
                    candidate != pawn &&
                    !candidate.Dead &&
                    !candidate.Downed &&
                    !candidate.Destroyed)
                {
                    Pawn_GestaltTracker tracker = candidate.GestaltTracker();
                    if (tracker != null && tracker.CanControlPawn(pawn))
                    {
                        float score = CalculateOverlordScore(candidate, tracker);
                        if (score > bestScore)
                        {
                            bestScore = score;
                            bestOverlord = candidate;
                        }
                    }
                }
            }
            
            // 找到合适的Overlord，建立关系并更新严重性
            if (bestOverlord != null)
            {
                // Pawns being destroyed/vanished can temporarily have no relations tracker.
                if (pawn.relations != null && ARA_PawnRelationDefOf.ARA_GestaltOverseer != null)
                {
                    pawn.relations.AddDirectRelation(ARA_PawnRelationDefOf.ARA_GestaltOverseer, bestOverlord);
                }
                UpdateSeverityBasedOnConnection();
                
                Log.Message($"[GestaltNode] {pawn.LabelShort} 连接到 Overlord: {bestOverlord.LabelShort}");
            }
        }
        
        /// <summary>
        /// 计算 Overlord 得分
        /// </summary>
        private float CalculateOverlordScore(Pawn overlord, Pawn_GestaltTracker tracker)
        {
            float score = 0f;
            
            if (overlord.Spawned && Pawn.Spawned && overlord.Map == Pawn.Map)
            {
                float distance = overlord.Position.DistanceTo(Pawn.Position);
                score += 100f / (distance + 1f);
            }
            
            float availableBandwidth = tracker.TotalBandwidth - tracker.UsedBandwidth;
            score += availableBandwidth * 10f;
            
            score += (10 - tracker.ControlGroups.Count) * 5f;
            
            return score;
        }
        
        /// <summary>
        /// Hediff 被移除时的清理
        /// </summary>
        public override void CompPostPostRemoved()
        {
            base.CompPostPostRemoved();
            
            // 当Hediff被移除时，如果连接到Overlord，需要断开连接
            if (NodeType == GestaltNodeType.HiveNode && IsConnectedToOverlord())
            {
                var pawn = Pawn;
                if (pawn?.relations == null || ARA_PawnRelationDefOf.ARA_GestaltOverseer == null)
                {
                    return;
                }

                Pawn overlord = pawn.GetOverlord();
                if (overlord != null)
                {
                    pawn.relations.RemoveDirectRelation(ARA_PawnRelationDefOf.ARA_GestaltOverseer, overlord);
                }
            }
        }
        
        /// <summary>
        /// 序列化
        /// </summary>
        public override void CompExposeData()
        {
            base.CompExposeData();
            Scribe_Values.Look(ref wasConnected, "wasConnected", false);
            Scribe_Values.Look(ref spawnTimestamp, "spawnTimestamp", -1);
            Scribe_Values.Look(ref isInitialized, "isInitialized", false);
            
            // 加载后，如果已经过了延迟期，标记为已初始化
            if (Scribe.mode == LoadSaveMode.PostLoadInit && spawnTimestamp >= 0)
            {
                // 检查当前时间是否已经过了延迟期
                if (Find.TickManager.TicksGame >= spawnTimestamp + DELAY_TICKS)
                {
                    isInitialized = true;
                }
            }
        }
        
        /// <summary>
        /// 调试信息
        /// </summary>
        public string GetDebugInfo()
        {
            var pawn = Pawn;
            if (pawn == null)
                return "Pawn is null";
                
            return $"NodeType: {NodeType}\n" +
                   $"SpawnTimestamp: {spawnTimestamp}\n" +
                   $"IsPastSpawnDelay: {IsPastSpawnDelay}\n" +
                   $"IsInitialized: {isInitialized}\n" +
                   $"WasConnected: {wasConnected}\n" +
                   $"IsConnected: {IsConnectedToOverlord()}\n" +
                   $"CurrentSeverity: {parent?.Severity ?? 0f}";
        }
    }
    
    /// <summary>
    /// Pawn 扩展方法
    /// </summary>
    public static class HediffExtensions
    {
        public static HediffComp_GestaltNode GetGestaltNodeComp(this Pawn pawn)
        {
            if (pawn?.health?.hediffSet?.hediffs == null)
                return null;

            foreach (Hediff hediff in pawn.health.hediffSet.hediffs)
            {
                HediffComp_GestaltNode comp = hediff.TryGetComp<HediffComp_GestaltNode>();
                if (comp != null)
                    return comp;
            }
            return null;
        }

        public static bool IsGestaltNode(this Pawn pawn, GestaltNodeType nodeType)
        {
            HediffComp_GestaltNode comp = pawn.GetGestaltNodeComp();
            return comp?.NodeType == nodeType;
        }
        
        /// <summary>
        /// 获取延迟信息（调试用）
        /// </summary>
        public static string GetGestaltNodeDelayInfo(this Pawn pawn)
        {
            HediffComp_GestaltNode comp = pawn.GetGestaltNodeComp();
            if (comp == null)
                return "No GestaltNode";
                
            return comp.GetDebugInfo();
        }
    }
}