using Invector;
using Invector.vCharacterController;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

namespace Beyond
{
    public class bSpriteHealth : MonoBehaviour
    {
        public vHealthController healthControl;
        public Camera specificCamera;

        [Tooltip("UI to show on receive damage")]
        [SerializeField]
        protected GameObject healthBar;

        public bool lookToCamera = true;

        [Header("UI properties")]
        [SerializeField] protected Slider _healthSlider;

        [SerializeField] protected Slider _damageDelay;

        //this is weird
        [SerializeField] protected float timeToHideDamageDelay;

        [SerializeField] protected float _smoothRegenDelay;
        [SerializeField] protected Text _damageCounter;
        [SerializeField] protected float _damageCounterTimer = 1.5f;
        [SerializeField] protected float _regenTimeCounter = 1.5f;
        [SerializeField] protected bool _showDamageType = true;
        private bool inDelay;
        private float damage;
        private float currentSmoothDamage;
        public Transform cameraMain;
        private bool isForced;
        public float damageDelaySpeed = 1f;

        public Transform healthCanvas;

        // Start is called before the first frame update

        private void Start()
        {
            if (specificCamera)
            {
                cameraMain = specificCamera.transform;
            }
            else
            {
                cameraMain = Camera.main ? Camera.main.transform : null;
            }

            healthControl.onReceiveDamage.AddListener(Damage);
            _healthSlider.maxValue = healthControl.maxHealth;
            _healthSlider.value = healthControl.currentHealth;
            _damageDelay.maxValue = healthControl.maxHealth;
            _damageDelay.value = healthControl.currentHealth;
            _damageCounter.text = string.Empty;
            if (healthBar) healthBar.SetActive(false);
        }

        private void OnEnable()
        {
            _damageDelay.value = _healthSlider.value;
            damage = 0;
            _damageCounter.text = string.Empty;
            inDelay = false;
        }

        private void SpriteBehaviour()
        {
            if (lookToCamera && cameraMain != null)
            {
                // transform.LookAt(cameraMain.position, Vector3.up);
                healthCanvas.LookAt(cameraMain.position, Vector3.up);
            }

            if (healthControl == null || healthControl.currentHealth <= 0)
                Destroy(gameObject);

            _healthSlider.value = healthControl.currentHealth;
        }

        private void Update()
        {
            if (!healthBar && !isForced)
            {
                SpriteBehaviour();
            }
        }

        public void Damage(vDamage damage)
        {
            try
            {
                this.damage += damage.damageValue;
                _damageCounter.text = this.damage.ToString("00") + ((_showDamageType && !string.IsNullOrEmpty(damage.damageType)) ? (" : by " + damage.damageType) : "");
                _healthSlider.value -= damage.damageValue;
                if (!inDelay && healthControl && gameObject.activeInHierarchy)
                    StartCoroutine(DamageDelay());
            }
            catch
            {
                Destroy(this);
            }
        }

        public void ForceShowHpBar()
        {
            if (healthBar)
            {
                isForced = true;
                healthBar.SetActive(true);
            }
        }

        public void ForceHideHpBar()
        {
            if (healthBar)
            {
                healthBar.SetActive(false);
                isForced = false;
            }
        }

        public void StartHealthRegen()
        {
            StartCoroutine(HealthDelay());
        }

        private IEnumerator HealthDelay()
        {
            inDelay = true;
            ForceShowHpBar();

            while (_healthSlider.value < _healthSlider.maxValue)
            {
                _healthSlider.value += _smoothRegenDelay;

                yield return null;
            }
            inDelay = false;

            yield return new WaitForSeconds(_regenTimeCounter);
            if (healthBar)
            {
                ForceHideHpBar();
            }
        }

        private IEnumerator DamageDelay()
        {
            inDelay = true;
            if (healthBar)
            {
                SpriteBehaviour();
            }
            if (healthBar)
            {
                healthBar.SetActive(true);
            }

            yield return new WaitForSeconds(timeToHideDamageDelay);

            while (_damageDelay.value > _healthSlider.value)
            {
                if (healthBar)
                {
                    SpriteBehaviour();
                }
                _damageDelay.value -= damageDelaySpeed * Time.deltaTime;

                yield return null;
            }
            inDelay = false;

            yield return new WaitForSeconds(_damageCounterTimer);
            damage = 0;
            _damageCounter.text = string.Empty;
            if (healthBar && !isForced)
            {
                healthBar.SetActive(false);
            }
        }
    }
}