using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class PlayerController : MonoBehaviour
{
    public float moveSpeed = 5f;  // À̵¿ ¼Óµµ
    public float dashDistance = 3f;  // ´ë½Ã °Å¸®
    public float dashCooldown = 1f;  // ´ë½Ã ÄðŸÀÓ
    public float maxSpeed = 8f;   // ÃÖ´ë ¼Óµµ (2~3ÃÊ ÈÄ ÃÖ´ë ¼Óµµ µµ´Þ)
    public float accelerationTime = 2f; // 2ÃÊ µ¿¾È °¡¼Ó
    public float dashTime = 0.5f;
    public float moveTime = 0f;  // À̵¿ÇÑ ½Ã°£
    public enum PlayerState { Idle, Walking, Dash, Attack }
    public PlayerState playerState;
    private Vector2 moveDirection = Vector2.zero;  // ÇöÀç À̵¿ ¹æÇâ
    private string[] anim_Strings = { "PosX", "PosY", "idleState" };
    PlayerAttack playerAttack;
    Animator animator;

    public float idleState = 0f; // 0: ¿À¸¥ÂÊ, 0.333: ¿ÞÂÊ, 0.666: À§, 1: ¾Æ·¡

    void Start()
    {
        animator = GetComponentInChildren<Animator>();
        playerAttack = GetComponent<PlayerAttack>();

        // Å° À̺¥Æ®¿Í ½ºÇÁ¶óÀÌÆ® ¹× ȸÀü ó¸® ¿¬°á
        PlayManager.Instance.keySdown += () => SetMovement(Vector2.down, 1f / 3f);  // ¾Æ·¡
        PlayManager.Instance.keyWdown += () => SetMovement(Vector2.up, 2f / 3f);   // ˤ
        PlayManager.Instance.keyAdown += () => SetMovement(Vector2.left, 1f);  // ¿ÞÂÊ
        PlayManager.Instance.keyDdown += () => SetMovement(Vector2.right, 1f); // ¿À¸¥ÂÊ

        // ´ë½Ã ±â´É
        PlayManager.Instance.keySpace += Dash;
    }

    void Update()
    {
        HandleMovement(); // À̵¿ ó¸®
    }

    // À̵¿ ó¸®
    void HandleMovement()
    {
        if (playerState == PlayerState.Dash || playerState == PlayerState.Attack) return;
        moveDirection = Vector2.zero;  // ¸Å ÇÁ·¹ÀÓ ÃʱâÈ­

        if (Input.GetKey(KeyCode.A)) moveDirection += Vector2.left;
        if (Input.GetKey(KeyCode.D)) moveDirection += Vector2.right;
        if (Input.GetKey(KeyCode.W)) moveDirection += Vector2.up;
        if (Input.GetKey(KeyCode.S)) moveDirection += Vector2.down;

        // À̵¿ ¿©ºÎ ÆǺ°
        if (moveDirection != Vector2.zero)
        {
            animator.SetBool("isWalking", true);

            playerState = PlayerState.Walking;
            moveTime += Time.deltaTime;
            // 2ÃÊ ÀÌ»ó À̵¿Çϸé Áï½Ã ¼Óµµ¸¦ maxSpeed·Î Áõ°¡
            float currentSpeed = HandleAcceleration();

            transform.position += (Vector3)(moveDirection.normalized * currentSpeed * Time.deltaTime);
            // A ¶Ç´Â D°¡ ´­¸° »óŶó¸é Side ¾Ö´Ï¸ÞÀ̼ÇÀ» ¿ì¼± Àû¿ë
            if (moveDirection.x != 0)
            {
                animator.SetFloat(anim_Strings[0], 1);
                animator.SetFloat(anim_Strings[1], 0);  
            }
            else
            {
                animator.SetFloat(anim_Strings[0], 0);
                animator.SetFloat(anim_Strings[1], moveDirection.y);
            }
            // ȸÀü ó¸®
            if (Mathf.Abs(moveDirection.x) > 0)
            {
                PlayerRot(moveDirection);
            }
        }
        else
        {
            // À̵¿ÇÏÁö ¾ÊÀ¸¸é Idle »óŸ¦ ¼³Á¤
            moveTime = 0f;
            animator.SetBool("isWalking", false);
            animator.SetFloat(anim_Strings[0], 0);
            animator.SetFloat(anim_Strings[1], 0);
            animator.SetFloat(anim_Strings[2], idleState);
        }
    }
    private void PlayerRot(Vector2 direction)
    {
        if (direction.x < 0 && transform.GetChild(0).localEulerAngles.y != 180)
        {
            transform.GetChild(0).localEulerAngles = new Vector3(0, 180, 0);
        }
        else if (direction.x > 0 && transform.GetChild(0).localEulerAngles.y != 0)
        {
            transform.GetChild(0).localEulerAngles = new Vector3(0, 0, 0);
        }
    }
    float HandleAcceleration()
    {
        if (playerState == PlayerState.Walking)
        {
            moveTime += Time.deltaTime;
            if (moveTime >= accelerationTime)
            {
                return maxSpeed; // 2ÃÊ ÀÌ»ó À̵¿ ½Ã °¡¼Ó
            }
        }
        return moveSpeed; // ±âº» ¼Óµµ
    }
    // ´ë½Ã ó¸®
    void Dash()
    {
        if (playerState != PlayerState.Dash)
        {
            playerState = PlayerState.Dash;
            animator.SetTrigger("DodgeTrigger");
            playerAttack.AttackStop();
            moveTime = 0f;
            StartCoroutine(DashCoroutine()); // ´ë½Ã ½ÃÀÛ
        }
    }

    IEnumerator DashCoroutine()
    {
        Vector3 startPosition = transform.position;
        Vector3 targetPosition = startPosition + (Vector3)(moveDirection.normalized * dashDistance);
        float elapsedTime = 0f;

        while (elapsedTime < dashTime)
        {
            transform.position = Vector3.Lerp(startPosition, targetPosition, elapsedTime / dashTime);
            elapsedTime += Time.deltaTime;
            yield return null;
        }

        transform.position = targetPosition;
        playerState = PlayerState.Idle;
    }
    // À̵¿ ¹æÇâ°ú ½ºÇÁ¶óÀÌÆ®, ȸÀü ó¸®
    void SetMovement(Vector2 direction, float idleStateValue)
    {
        moveDirection = direction;
        idleState = idleStateValue;
    }

}