using CoreGame;
using GAS.Runtime;
using Sog;
using UnityEngine;
using UnityEngine.AI;

namespace CoreGame.Render
{
    [Combat]
    public class NavAgentProxy : ProxyBase
    {
        private NavMeshAgent m_Agent;
        private ReuseGoData m_LogicGoData;
        private NavRender m_Render;
        private const string LogicGoPath = "Model/NavMeshAgent";
        private const string LogicGoParent = "LogicWorld";
        private NavMeshPath m_Path;
        private float m_Speed;
        private float m_CacheSpeed;
        private float m_CacheScale = -1;

        protected override void Initialize(GameObject go, CombatEntity ent)
        {
            m_Render = go.GetComponent<NavRender>();
            m_LogicGoData = ent.GetNewGo(LogicGoPath, SetLogicGo, ent.creationIndex);
            m_Path = new NavMeshPath();
            m_CacheScale = -1;
            m_CacheSpeed = -1;
            m_Speed = 1;
        }

        private void SetLogicGo(ReuseGoData reuseGoData)
        {
            if (reuseGoData == null)
                return;
            var logicGoParent = GameObject.Find(LogicGoParent).transform;
            var reuseGo = reuseGoData.go;
            reuseGo.name = $"{go.name}_LogicAgent";
            reuseGo.transform.SetParent(logicGoParent);
            reuseGoData.go.SetActiveWrap(true);
            m_Agent = reuseGo.GetComponent<NavMeshAgent>();
            m_Agent.autoBraking = false;
            m_Agent.obstacleAvoidanceType = ObstacleAvoidanceType.LowQualityObstacleAvoidance;
            m_Agent.radius = m_Render.radius;
            m_Agent.avoidancePriority = m_Render.avoidancePriority;
            m_Agent.Warp(ent.transformProxy.position);
        }

        public void ChangeSpeedParam(float scale)
        {
            if (Mathf.Approximately(m_CacheScale, scale) && Mathf.Approximately(m_CacheSpeed, m_Speed))
                return;

            if (!m_Agent.IsValid())
                return;

            m_CacheScale = scale;
            m_CacheSpeed = m_Speed;
            m_Agent.speed = m_CacheSpeed * m_CacheScale;
        }

        public bool IsStopped()
        {
            if (!m_Agent.IsValid())
                return true;
            return m_Agent.isStopped;
        }

        public bool IsArrived()
        {
            if (!m_Agent.IsValid())
                return false;
            return m_Agent.remainingDistance <= m_Agent.stoppingDistance;
        }

        public void SetDestination(Vector2 target, Fixed64 speed, float stopDistance = 0.01f)
        {
            if (!m_Agent.IsValid() ||
                ent.TagCountContainer.HasAnyTags(GTagLib.State_Death, GTagLib.State_Stun, GTagLib.State_ForceMove))
                return;

            m_Agent.isStopped = false;
            // m_Agent.speed = speed;
            m_Speed = speed.AsFloat;
            m_Agent.acceleration = 100f;
            m_Agent.stoppingDistance = stopDistance;
            m_Agent.CalculatePath(target, m_Path);
            if (m_Path.status != NavMeshPathStatus.PathInvalid)
            {
                m_Agent.SetPath(m_Path);
                if (ent.hasNavState == false)
                    ent.AddNavState(NavState.Naving);
            }
            else
            {
                m_Agent.isStopped = true;
            }
        }

        public Vector2 GetLogicPos()
        {
            if (!m_Agent.IsValid())
                return ent.transformProxy.position;
            return m_Agent.nextPosition;
        }

        public bool ForceMove(Fixed64Vector2 offset1)
        {
            Vector2 offset = offset1.ToVector2();
            if (!m_Agent.IsValid() || offset.sqrMagnitude is < 0.00001f or > 10000f)
                return false;
            m_Agent.isStopped = true;
            m_Agent.ResetPath();
            var sourcePos = ent.transformProxy.position;
            var targetPos = sourcePos + offset;

            var hasHit = NavMesh.Raycast(sourcePos, targetPos, out _, NavMesh.AllAreas);

            if (!hasHit)
            {
                m_Agent.Warp(targetPos);
                return true;
            }
            else
            {
                NavMesh.SamplePosition(targetPos, out var closestHit, offset.magnitude + 0.1f, NavMesh.AllAreas);
                var pos = new Vector2(closestHit.position.x, closestHit.position.y);
                m_Agent.Warp(pos);
                return false;
            }
        }


        public bool IsValid()
        {
            return m_Agent.IsValid();
        }

        public void StopNav()
        {
            if (!m_Agent.IsValid())
                return;
            m_Agent.isStopped = true;
            
            ent.isForceNav = false;
        }

        protected override void OnReset()
        {
            ent.ReleaseGo(m_LogicGoData);
            m_Render = null;
            m_Agent = null;
            m_LogicGoData = null;
        }
    }
}