using System.Collections;
using System.Collections.Generic;
using Unity.VisualScripting;
using UnityEngine;
using UnityEngine.InputSystem;

public class PlayerController : MonoBehaviour
{

    private Player player;

    private int currentHealth;
    private int maxHealth;

    private Rigidbody2D _rigidbody;
    private Camera _camera;
    
    private int maxJumpCount = 2;
    private int currentJumpCount = 2;
    
    private bool isGrounded;
    private bool isDashing;
    
    private Vector2 inputVector;
    private float jumpStartTime;

    private Coroutine jumpCutRoutine;

    private List<GameObject> dashHitEnemies = new List<GameObject>();
    
    [SerializeField] private float moveSpeed = 9f;
    [SerializeField] private float jumpSpeed = 18.2f;
    [SerializeField] private float jumpCutMultiplier = 0.3f;
    [SerializeField] private float minJumpDuration = 0.1f;
    [SerializeField] private float dashTime = 0.5f;
    [SerializeField] private float dashDistance = 5f;

    [SerializeField] private LayerMask enemyLayer;
    [SerializeField] private Vector2 attackBoxSize = new Vector2(1f, 1f);

    private void Start()
    {
        player = GetComponent<Player>();
        _rigidbody = gameObject.GetComponent<Rigidbody2D>();
        _camera = Camera.main;
    }

    private void FixedUpdate()
    {
        isGrounded = CheckGround();
        MovePlayer();
        InitJumpCount();
        
        Debug.DrawRay(transform.position, Vector2.down * 1.25f, Color.red);
    }

    private void OnMove(InputValue value)
    {
        Vector2 input = value.Get<Vector2>();
        inputVector = new Vector2(input.x * moveSpeed, 0);
    }

    private void OnAttack(InputValue value)
    {
        if (isDashing) return;
        if (value.isPressed)
        {
            if (Mouse.current.leftButton.isPressed)
            {
                NormalAttack();
            } else if (Mouse.current.rightButton.isPressed)
            {
                DashAttack();
            }
        }
    }

    private void OnJump(InputValue value)
    {
        player.Jump();
    }

    private void NormalAttack()
    {
        float angle = GetMouseAngle();
        Vector2 direction = new Vector2(Mathf.Cos(angle * Mathf.Deg2Rad), Mathf.Sin(angle * Mathf.Deg2Rad));
        Vector2 originPosition = (Vector2)transform.position + (direction * 1);
        Collider2D[] enemise = Physics2D.OverlapBoxAll(originPosition, attackBoxSize, angle, enemyLayer);
        Debug.Log(angle);
        if (enemise.Length > 0)
        {
            foreach (Collider2D enemy in enemise)
            {
                Debug.Log(enemy.name);
                enemy.gameObject.GetComponent<Entity>().TakeDamage(10);
            }
            if (angle > -110 && angle < -70)
            {
                DownAttackLeap();
            }
        }
        
    }

    private void DownAttackLeap()
    {
        _rigidbody.linearVelocity = new Vector2(-_rigidbody.linearVelocity.x, 20f);
    }
    
    private void DashAttack()
    {
        if (isDashing) return;
        StartCoroutine(DashPlayerRoutine());
    }

    private IEnumerator DashPlayerRoutine()
    {
        isDashing = true;
        _rigidbody.linearVelocity = Vector2.zero;
        dashHitEnemies.Clear();

        Vector2 mousePos = _camera.ScreenToWorldPoint(Mouse.current.position.ReadValue());
        Vector2 direction = (mousePos - (Vector2)transform.position).normalized;

        if (isGrounded && mousePos.y < transform.position.y)
        {
            direction = new Vector2(Mathf.Sign(direction.x), 0);
        }

        Vector2 startPos = _rigidbody.position;
        Vector2 targetPos = startPos + (direction * dashDistance);

        float dashTimer = 0f;
        while (dashTimer < dashTime)
        {
            dashTimer += Time.deltaTime;
            float t =  dashTimer / dashTime;
            
            _rigidbody.MovePosition(Vector2.Lerp(startPos, targetPos, t));

            yield return null;
        }
        isDashing = false;
    }
    
    private void MovePlayer()
    {
        if(!isDashing)
            _rigidbody.linearVelocity = new Vector2(inputVector.x, _rigidbody.linearVelocity.y);
    }

    private float GetMouseAngle()
    {
        Vector2 tempVect = _camera.ScreenToWorldPoint(Mouse.current.position.ReadValue()) - transform.position; 
        return Mathf.Atan2(tempVect.y, tempVect.x) * Mathf.Rad2Deg;
    }
    
    
    private void CutJumpVelocity()
    {
        if (_rigidbody.linearVelocity.y > 0)
        {
            _rigidbody.linearVelocity = new Vector2(_rigidbody.linearVelocity.x, _rigidbody.linearVelocity.y * jumpCutMultiplier);
        }
    }

    private IEnumerator DelayedJumpCut(float delay)
    {
        yield return new WaitForSeconds(delay);
        CutJumpVelocity();
    }
    
    private bool CheckGround()
    {
        return Physics2D.Raycast(transform.position, Vector2.down, 1.25f, LayerMask.GetMask("Ground"));
    }
    
    private void InitJumpCount()
    {
        if (isGrounded && _rigidbody.linearVelocity.y <= 0.1f)
        {
            currentJumpCount = maxJumpCount;
        }
    }
    
    private void OnTriggerEnter2D(Collider2D collision) 
    {
        if (isDashing)
        {
            if ((enemyLayer.value & (1 << collision.gameObject.layer)) > 0)
            {
                if (!dashHitEnemies.Contains(collision.gameObject))
                {
                    dashHitEnemies.Add(collision.gameObject);
                    Debug.Log(collision.gameObject.name + " 대쉬 피격");
                    collision.gameObject.GetComponent<Entity>().TakeDamage(10);
                }
            }
        }
    }

   

}