using BrewMonster.Network;
using CSNetwork;
using CSNetwork.GPDataType;
using CSNetwork.Protocols;
using CSNetwork.Protocols.RPCData;
using System;
using System.IO;
using System.Text;
using TMPro;
using UnityEngine;
using UnityEngine.InputSystem;
using UnityEngine.SceneManagement;
using UnityEngine.UI;
using Scene = UnityEngine.SceneManagement.Scene;
using System.Runtime.InteropServices;
using Unity.VisualScripting;
using PerfectWorld.Scripts.Managers;

public class CECHostPlayer : EC_Player
{
    [SerializeField] private TextMeshPro txtName;
    [SerializeField] private CharacterController controller;

    [SerializeField] private Joystick joystick;
    [SerializeField] private Button btnJump;
    [SerializeField] private Button btnRun;
    [SerializeField] private Transform parentModel;

    PlayerStateMachine _playerStateMachine;
    PlayerMoveState _moveState;
    PlayerIdleState _idleState;
    CECHostMove m_MoveCtrl;

    float playerSpeed = 5.0f;
    float jumpHeight = 1.5f;
    float gravityValue = -9.81f;
    StateAnim stateAnim = StateAnim.Idle;
    Vector3 playerVelocity;
    bool isGrounded = false;
    bool isRun = false;
    Vector3 m_vLastSevPos;

    // ====== Ground cast config ======
    [Header("Ground Cast")]
    [Tooltip("Khoảng thêm ngoài skinWidth để SphereCast xuống (m ngắn)")]
    [SerializeField] private float extraGroundDistance = 0.05f;
    [Tooltip("Bớt bán kính một chút để tránh tự va vào capsule (epsilon)")]
    [SerializeField] private float radiusEpsilon = 0.005f;
    [Tooltip("Layer mặt đất")]
    [SerializeField] private LayerMask groundMask;
    [Tooltip("Layer mặt đất")]
    [SerializeField] private float slopeToleranceDeg = 2f;

    // cache tùy chọn (không bắt buộc)
    float ccRadius, ccSkin;
    RaycastHit lastGroundHit;

    private void Awake()
    {
        base.Awake();
        _moveState = new PlayerMoveState(this);
        _idleState = new PlayerIdleState(this);
        _playerStateMachine = new PlayerStateMachine();
        m_MoveCtrl = new CECHostMove(this);

        // Cache: không bắt buộc, nhưng gọn tay và ít gọi property lặp.
        if (controller != null)
        {
            ccRadius = controller.radius;
            ccSkin = controller.skinWidth;
        }
    }


    public void SetModelHostPlayer()
    {
        m_pPlayerModel = NPCManager.Instance.GetModelPlayer();
        Scene scene = SceneManager.GetSceneByName("WorldRender");
        SceneManager.MoveGameObjectToScene(m_pPlayerModel, scene);
        m_pPlayerModel.transform.SetParent(parentModel);
        m_pPlayerModel.transform.localPosition = Vector3.zero;
        m_pPlayerModel.SetActive(true);
    }
    private void Start()
    {
        _playerStateMachine.InitState(_idleState);
        // btnJump.onClick.AddListener(HandleJump);
    }

    private void Update()
    {
        //Debug.Log($"(ulong)Time.deltaTime * 1000 {(ulong)(Time.deltaTime * 1000)}");
        m_MoveCtrl.Tick((ulong)(Time.deltaTime * 1000));
        // Nếu có thay đổi runtime, có thể lấy lại mỗi vài giây/Start nếu bạn thích:
        // ccRadius = controller.radius; ccSkin = controller.skinWidth;

        _playerStateMachine.UpdateState();
    }
    public void StopMovement()
    {
        m_MoveCtrl.SendStopMoveCmd(transform.position, 5f, (int)MoveMode.GP_MOVE_WALK);
    }
    public void HandleMovement()
    {
        // 1) Kiểm tra grounded bằng SphereCast ngắn dựa trên radius + skinWidth
        isGrounded = GroundCheck(out lastGroundHit);

        // 2) Input tạm thời: giữ nguyên như bạn
        if (UnityEngine.Input.GetKeyDown(KeyCode.LeftShift)) SetStatusRun(true);
        if (UnityEngine.Input.GetKeyUp(KeyCode.LeftShift)) SetStatusRun(false);
        if (UnityEngine.Input.GetKeyDown(KeyCode.Space)) HandleJump();

        // 3) Trọng lực / sticky
        if (isGrounded && playerVelocity.y < 0f)
        {
            // Đè nhẹ để bám đất (tránh nhấp-nháy)
            playerVelocity.y = -2f;
        }
        else
        {
            playerVelocity.y += gravityValue * Time.deltaTime;
        }

        // 4) Chuyển động phẳng
        float x = joystick.Horizontal;
        float z = joystick.Vertical;

        Vector3 move = new Vector3(x, 0, z);
        move = Vector3.ClampMagnitude(move, 1f);

        if (move != Vector3.zero)
        {
            transform.forward = move;
            Debug.LogWarning("HoangDev :HandleMovement");
            m_MoveCtrl.GroundMove(Time.deltaTime);
            m_MoveCtrl.SendMoveCmd(transform.position, controller.velocity, (int)MoveMode.GP_MOVE_RUN);
        }
        else
        {

        }

        Vector3 finalMove = (move * playerSpeed) + (playerVelocity.y * Vector3.up);
        controller.Move(finalMove * Time.deltaTime);
    }
    private void JoystickRelease(JoystickRealeaseEvent joystickRealeaseEvent)
    {
        _playerStateMachine.ChangeState(_idleState);
    }

    private bool GroundCheck(out RaycastHit hit)
    {
        float radius = controller.radius;
        float skin = controller.skinWidth;
        float height = controller.height;

        // Tâm capsule theo world
        Vector3 cWorld = transform.TransformPoint(controller.center);
        float hemi = Mathf.Max(0f, (height * 0.5f) - radius);

        // Hai điểm top/bottom của capsule nhân vật (đang đứng)
        Vector3 pTop = cWorld + Vector3.up * hemi;
        Vector3 pBottom = cWorld - Vector3.up * hemi;

        // Ta tạo một "đoạn capsule ngắn" gần đáy để sweep xuống
        // Nhấc đoạn bắt đầu lên 1 chút để không bắt đầu trong trạng thái giao nhau
        Vector3 startBottom = pBottom + Vector3.up * (skin + 0.01f);
        Vector3 startTop = startBottom + Vector3.up * (radius * 2f - 0.02f); // chiều cao đoạn ngắn ~2*radius

        float castRadius = Mathf.Max(0f, radius - radiusEpsilon);
        float castDistance = skin + extraGroundDistance; // quãng sweep ngắn

        bool hitSomething = Physics.CapsuleCast(
            startTop, startBottom, castRadius,
            Vector3.down, out hit, castDistance,
            groundMask, QueryTriggerInteraction.Ignore
        );

        if (!hitSomething) return false;

        // Lọc theo slope limit
        float maxSlope = controller.slopeLimit + slopeToleranceDeg;
        float slope = Vector3.Angle(hit.normal, Vector3.up);
        if (slope > maxSlope) return false;

        return true;
    }

    private void HandleJump()
    {
        if (isGrounded)
        {
            playerVelocity.y = Mathf.Sqrt(jumpHeight * -2f * gravityValue);
        }
    }
    public void ProcessMessage(in ECMSG Msg)
    {
        Debug.LogWarning("HoangDev : ProcessMessageProcessMessageProcessMessage");
        switch ((int)Msg.dwMsg)
        {
            case int value when value == EC_MsgDef.MSG_HST_CORRECTPOS: OnMsgHstCorrectPos(Msg); break;
            case int value when value == EC_MsgDef.MSG_HST_GOTO: OnMsgHstGoto(Msg); break;
            case int value when value == EC_MsgDef.MSG_HST_IVTRINFO:
                {
                    OnMsgHstIvtrInfo(Msg);
                    break;
                }
            case int value when value == EC_MsgDef.MSG_HST_OWNITEMINFO:
                {
                    OnMsgHstOwnItemInfo(Msg);
                    break;
                }
        }
    }
    public void OnMsgHstOwnItemInfo(ECMSG Msg)
    {
        int cmd = Convert.ToInt32(Msg.dwParam2);
        switch (cmd)
        {
            case CommandID.OWN_ITEM_INFO:
                {
                    Debug.Log("[Inventory] OWN_ITEM_INFO received");
                    var data = Msg.dwParam1 as byte[];
                    int hostId = Convert.ToInt32(Msg.dwParam3);
                    PerfectWorld.Scripts.Managers.EC_Inventory.LogInventoryPacket("OWN_ITEM_INFO", data, hostId);
                    break;
                }

        }
    }
    public void OnMsgHstIvtrInfo(ECMSG Msg)
    {
        var data = Msg.dwParam1 as byte[];
        int cmd = Convert.ToInt32(Msg.dwParam2);
        int hostId = Convert.ToInt32(Msg.dwParam3);

        switch (cmd)
        {
            case CommandID.OWN_IVTR_DATA:
                {
                    Debug.Log("[Inventory] OWN_IVTR_DATA received");
                    PerfectWorld.Scripts.Managers.EC_Inventory.LogInventoryPacket("OWN_IVTR_DATA", data, hostId);
                    break;
                }
            case CommandID.OWN_IVTR_DETAIL_DATA:
                {
                    Debug.Log("[Inventory] OWN_IVTR_DETAIL_DATA received");
                    PerfectWorld.Scripts.Managers.EC_Inventory.LogInventoryPacket("OWN_IVTR_DETAIL_DATA", data, hostId);
                    // Parse and store
                    if (data != null && data.Length >= 6)
                    {
                        byte byPackage = data[0];
                        byte ivtrSize = data[1];
                        if (PerfectWorld.Scripts.Managers.EC_IvtrItem.TryParseInventoryDetail(data, out var pkg, out var size, out var items))
                        {
                            PerfectWorld.Scripts.Managers.EC_Inventory.UpdatePack(pkg, size, items);
                        }
                    }
                    break;
                }

        }
    }
    public void OnMsgHstCorrectPos(in ECMSG Msg)
    {
        Debug.LogWarning("HoangDev : OnMsgHstCorrectPos");
        byte[] buf = (byte[])Msg.dwParam1; // chỗ bạn lưu pDataBuf
        GCHandle handle = GCHandle.Alloc(buf, GCHandleType.Pinned);
        cmd_host_correct_pos pCmd = (cmd_host_correct_pos)Marshal.PtrToStructure(
            handle.AddrOfPinnedObject(), typeof(cmd_host_correct_pos));
        handle.Free();
        Debug.LogWarning("HoangDev :pCmd.pos " + pCmd.pos);
        SetPos(pCmd.pos);
    }
    public void OnMsgHstGoto(in ECMSG Msg)
    {
        Debug.Log("HoangDev :OnMsgHstGoto");
        cmd_notify_hostpos pCmd = (cmd_notify_hostpos)Msg.dwParam1;

    }

    private void SetPos(Vector3 pos)
    {
        transform.position = pos;
    }
    public void SetStatusRun(bool value)
    {
        if (!isGrounded)
        {
            Debug.LogError("Player not in ground");
            return;
        }
        isRun = value;
    }
    public void InitCharacter(cmd_self_info_1 role)
    {
        string roleName = "(Error decoding name)";
        //if (role.name != null && role.name.ByteArray != null)
        //{
        //    roleName = Encoding.UTF8.GetString(role.name.ByteArray, 0, role.name.Length);
        //}
        SetPlayerInfor(new INFO(role.cid, role.crc_e, role.crc_c));
        Vector3 pos = new Vector3(role.pos.x, role.pos.y, role.pos.z);
        if (txtName != null) txtName.text = roleName;
        transform.position = pos;
        SetModelHostPlayer();
        Debug.LogError("Pos Character = " + pos);
        joystick = FindAnyObjectByType<Joystick>();
        EventBus.Subscribe<JoystickRealeaseEvent>(JoystickRelease);
        EventBus.Subscribe<JoystickPressEvent>(JoystickStartDrag);
        if (TryGetComponent<PlayerVisual>(out var visual))
        {
            visual.InitHostPlayerEventDoneHandler();
        }
    }

    private void JoystickStartDrag(JoystickPressEvent joystickPressEvent)
    {
        _playerStateMachine.ChangeState(_moveState);
    }
    private void OnDestroy()
    {
        EventBus.Unsubscribe<JoystickRealeaseEvent>(JoystickRelease);
        EventBus.Unsubscribe<JoystickPressEvent>(JoystickStartDrag);
    }
    public void InitCharacter(info_player_1 role)
    {
        string roleName = "(Error decoding name)";
        //if (role.name != null && role.name.ByteArray != null)
        //{
        //    roleName = Encoding.UTF8.GetString(role.name.ByteArray, 0, role.name.Length);
        //}
        Vector3 pos = new Vector3(role.pos.x, role.pos.y, role.pos.z);
        if (txtName != null) txtName.text = roleName;
        transform.position = pos;
        SetModelHostPlayer();
        Debug.LogError("Pos Character = " + pos);
    }
}

public enum StateAnim
{
    Idle = 1,
    Walk = 2,
    Run = 3,
    Jump = 4
}