using System;
using System.Collections;
using RR.Game2D.Core;
using UnityEngine;

namespace RR.Game2D.Entities.Platforms
{
    public class ShiftingPlatform : MonoBehaviour
    {
        [Header("Настройки смещения платформы")]
        [SerializeField] private Vector3 shiftAmount = new Vector3(0f, 2f, 0f);
        [SerializeField] private float shiftDuration = 1f;
        [SerializeField] private Direction2D shiftDirection = Direction2D.Down;

        [Header("Прикрепление игрока")]
        [SerializeField] private bool attachPlayer = true;

        private Vector3 _startPosition;

        private void Awake()
        {
            _startPosition = transform.position;
        }

        private void OnCollisionEnter2D(Collision2D other)
        {
            if (!other.gameObject.CompareTag("Player")) return;

            if (attachPlayer) other.transform.SetParent(transform);

            Vector3 shiftVector = shiftDirection switch
            {
                Direction2D.Down => Vector3.down * shiftAmount.y,
                Direction2D.Left => Vector3.left * shiftAmount.x,
                Direction2D.Right => Vector3.right * shiftAmount.x,
                Direction2D.Up => Vector3.up * shiftAmount.y,
                _ => Vector3.zero
            };

            StopAllCoroutines();
            StartCoroutine(ShiftPlatform(shiftVector));
        }

        private void OnCollisionExit2D(Collision2D other)
        {
            if (!other.gameObject.CompareTag("Player")) return;

            if (attachPlayer) other.transform.SetParent(null);

            Vector3 shiftVector = shiftDirection switch
            {
                Direction2D.Down => Vector3.up * shiftAmount.y,
                Direction2D.Left => Vector3.right * shiftAmount.x,
                Direction2D.Right => Vector3.left * shiftAmount.x,
                Direction2D.Up => Vector3.down * shiftAmount.y,
                _ => Vector3.zero
            };

            StopAllCoroutines();
            StartCoroutine(ShiftPlatform(shiftVector));
        }

        private IEnumerator ShiftPlatform(Vector3 shiftVector)
        {
            Vector3 initialPosition = transform.position;
            Vector3 finalPosition = initialPosition + shiftVector;
            float elapsedTime = 0f;

            while (elapsedTime < shiftDuration)
            {
                transform.position = Vector3.Lerp(initialPosition, finalPosition, (elapsedTime / shiftDuration));
                elapsedTime += Time.deltaTime;
                yield return null;
            }

            transform.position = finalPosition;
        }
    }
}