using UnityEngine;
using UnityEngine.AI;
using UnityEngine.InputSystem;

public class HookWalkToTable : MonoBehaviour
{
    [Header("Path Points")]
    public Transform tableFrontPoint;
    public Transform chairFrontPoint;

    [Header("Sit Point")]
    public Transform sitPoint;

    [Header("Move Setting")]
    public float arriveBuffer = 0.15f;

    [Header("Animator")]
    public Animator animator;
    public string walkBoolName = "isWalking";
    public string sitTriggerName = "sitTrigger";

    [Header("Collision")]
    public bool disableCollidersWhenSitting = true;
    public Collider[] hookColliders;

    [Header("Test")]
    public Key testStartKey = Key.T;

    private NavMeshAgent agent;

    private int step = 0;
    private bool isMoving = false;
    private bool hasArrived = false;
    private bool isSitting = false;

    private Vector3 currentDestination;

    void Start()
    {
        agent = GetComponent<NavMeshAgent>();

        if (agent != null)
        {
            agent.isStopped = true;
            agent.ResetPath();
            agent.stoppingDistance = 0.05f;
            agent.autoBraking = true;
        }

        if (animator != null)
        {
            animator.SetBool(walkBoolName, false);
        }

        // Inspector¿¡ Collider¸¦ ¾È ³Ö¾îµµ ÀÚµ¿À¸·Î ÈÄÅ© ÀÚ½Ä ÄݶóÀÌ´õµéÀ» ã¾ÆÁÜ
        if (hookColliders == null || hookColliders.Length == 0)
        {
            hookColliders = GetComponentsInChildren<Collider>();
        }
    }

    void Update()
    {
        // Å×½ºÆ®¿ë: T ´©¸£¸é Ãâ¹ß
        if (Keyboard.current != null && Keyboard.current[testStartKey].wasPressedThisFrame)
        {
            StartWalking();
        }

        if (!isMoving || agent == null)
        {
            return;
        }

        if (agent.pathPending)
        {
            return;
        }

        float distance = Vector3.Distance(transform.position, currentDestination);

        if (distance <= agent.stoppingDistance + arriveBuffer)
        {
            GoNextStep();
        }
    }

    public void StartWalking()
    {
        if (agent == null)
        {
            Debug.LogWarning("NavMeshAgent is missing.");
            return;
        }

        if (tableFrontPoint == null || chairFrontPoint == null)
        {
            Debug.LogWarning("TableFrontPoint or ChairFrontPoint is missing.");
            return;
        }

        if (isMoving || hasArrived || isSitting)
        {
            return;
        }

        step = 0;
        hasArrived = false;
        isMoving = true;

        if (animator != null)
        {
            animator.SetBool(walkBoolName, true);
        }

        agent.enabled = true;
        agent.isStopped = false;

        MoveTo(tableFrontPoint);

        Debug.Log("Hook starts walking to table front point.");
    }

    void MoveTo(Transform target)
    {
        NavMeshHit hit;

        if (NavMesh.SamplePosition(target.position, out hit, 1.5f, NavMesh.AllAreas))
        {
            currentDestination = hit.position;
            agent.SetDestination(currentDestination);

            Debug.Log("Destination set: " + target.name);
        }
        else
        {
            Debug.LogWarning("Target is not near NavMesh: " + target.name);
            StopWalking();
        }
    }

    void GoNextStep()
    {
        step++;

        if (step == 1)
        {
            MoveTo(chairFrontPoint);
            Debug.Log("Hook moves to chair front point.");
        }
        else
        {
            ArriveAndSit();
        }
    }

    void ArriveAndSit()
    {
        isMoving = false;
        hasArrived = true;
        isSitting = true;

        // 1. NavMeshAgent ¸ÕÀú ²ô±â
        if (agent != null)
        {
            agent.isStopped = true;
            agent.ResetPath();
            agent.enabled = false;
        }

        // 2. ÈÄÅ© ¸ö Collider ²ô±â
        // ÀÇÀÚ/Å×À̺í ÄݶóÀÌ´õ¿¡ ¹Ð·Á¼­ À§·Î ¿Ã¶ó°¡´Â ¹®Á¦ ¹æÁö
        if (disableCollidersWhenSitting)
        {
            DisableHookColliders();
        }

        // 3. ½ÇÁ¦ ¾ÉÀ» À§Ä¡·Î °­Á¦ À̵¿
        if (sitPoint != null)
        {
            transform.position = sitPoint.position;
            transform.rotation = sitPoint.rotation;
        }
        else if (chairFrontPoint != null)
        {
            transform.rotation = chairFrontPoint.rotation;
        }

        // 4. ¾É´Â ¾Ö´Ï¸ÞÀÌ¼Ç ½ÇÇà
        if (animator != null)
        {
            animator.SetBool(walkBoolName, false);
            animator.SetTrigger(sitTriggerName);
        }

        Debug.Log("Hook moved to sit point and started sitting.");
    }

    void DisableHookColliders()
    {
        if (hookColliders == null || hookColliders.Length == 0)
        {
            return;
        }

        foreach (Collider col in hookColliders)
        {
            if (col != null)
            {
                col.enabled = false;
            }
        }
    }

    void StopWalking()
    {
        isMoving = false;

        if (agent != null && agent.enabled)
        {
            agent.isStopped = true;
            agent.ResetPath();
        }

        if (animator != null)
        {
            animator.SetBool(walkBoolName, false);
        }
    }
}