using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using _Scripts.Enemy;
namespace _Scripts.Player
{
    public class PlayerDamageBehaviour : MonoBehaviour
    {

        public PlayerHealth playerHealth;

        // public GUITexture bloodGUI1, bloodGUI2, bloodGUI3;
        public CanvasGroup bloodGUI1, bloodGUI2, bloodGUI3;

        public GameObject screen;

        // Use this for initialization
        void Start()
        {
            playerHealth.AddOnHealthChangedListener(SetBloodGUI);
            playerHealth.AddOnDeathListener(Died);
        }

        // Update is called once per frame
        void Update()
        {
            if (Input.GetButton("Jump"))
            {
                playerHealth.TakeDamage(2);
            }
        }

        void SetBloodGUI()
        {
            float maxHealth = playerHealth.GetMaxHealth();

            bloodGUI1.alpha = BloodAlpha(maxHealth); // start appearing when health < 100%
            bloodGUI2.alpha = BloodAlpha(0.6f * maxHealth); // start appearing when health < 60%
            bloodGUI3.alpha = BloodAlpha(0.3f * maxHealth); // start appearing when health < 30%
        }

        private float BloodAlpha(float start)
        {
            float alpha = 1 - (100 * playerHealth.GetHealth()) / (start * playerHealth.GetMaxHealth());
            Debug.Log(alpha);
            return Mathf.Clamp(alpha, 0f, 0.8f);
        }

        private void Died()
        {
            screen.SetActive(true);
        }

        private void OnCollisionEnter(Collision collision)
        {

            if (collision.collider.CompareTag("Enemy"))
            {
                Debug.Log("Enemy touching");
                EnemyBehaviour enemy = collision.collider.GetComponent<EnemyBehaviour>();

                if (enemy.IsAttacking())
                {
                    playerHealth.TakeDamage(enemy.data.attackDamage);
                }
                // Check if enemy is in attacking state
                // Get amount of damage from EnemyDamage ScriptableObject
                // Deduct damage from PlayerHealth
            }
        }

    }
}