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

public class Dragon : MonoBehaviour{

    public GameObject colliderStop;
    public GameObject[] diable;
    public GameObject[] phase2Enable;
    public GameObject[] phase3Enable;
    public Vector2[] phasesPositions;
    public GameObject fire;
    public GameObject fireball;
    public int maxHp;
    public float hp;
    public Transform mouth;
    public CameraShake cameraShake;
    Animator anim;
    public int phase = 1;
    bool vulnerable;
    Transform player;
    Transform parent;

    // Start is called before the first frame update
    void Start(){
        parent = GetComponentInParent<Transform>();
        anim = GetComponent<Animator>();
        hp = maxHp;
        vulnerable = false;
        player = GameObject.FindGameObjectWithTag("Player").GetComponent<Transform>();
        foreach(GameObject g in diable){
            g.SetActive(false);
        }
        if(phase == 2){
            anim.SetBool("Phase2", true);
        }else if(phase == 3){
            anim.SetBool("Phase2", true);
            anim.SetBool("Phase3", true);
        }
        Invoke("DisableColliderStop", 2f);
    }

    void DisableColliderStop(){
        colliderStop.SetActive(false);
    }

    float speed;

    // Update is called once per frame
    void Update(){
        if(phase == 1){
            if(hp <= 60){
                phase = 2;
                anim.SetBool("Die", true);
                foreach (GameObject g in diable){
                    g.SetActive(false);
                }
                foreach (GameObject g in phase2Enable){
                    g.SetActive(true);
                }
            }
        }else if(phase == 2){
            if (hp <= 30){
                phase = 3;
                anim.SetBool("Die", true);
                foreach (GameObject g in diable){
                    g.SetActive(false);
                }
                foreach (GameObject g in phase3Enable){
                    g.SetActive(true);
                }
            }
        }else if(phase == 3){
            if(hp <= 0){
                Die();
            }
        }
    }

    void Die(){
        anim.SetBool("Die", true);
    }

    public void TakeDamage(float amt){
        if (vulnerable){
            hp = Mathf.Clamp(hp - amt, 0f, maxHp);
        }
    }

    public void IsIdle(){
        vulnerable = true;
    }

    public void Shake(){
        cameraShake.Shake(.1f, 1.5f);
        AudioManager.instance.Play("DragonShout");
    }

    public void FireSound(){
        AudioManager.instance.Play("DragonFire");
    }

    public void FireAttack(){
        vulnerable = false;
        Instantiate(fire, mouth.position, Quaternion.identity, mouth);
    }

    public void EndFireAttack(){
        vulnerable = true;
    }

    public void FireBallAtack(){
        AudioManager.instance.Play("DragonFireBall");
        vulnerable = false;
        Instantiate(fireball, mouth.position, Quaternion.Euler(0, 0, 90f));
    }

    public void EndFireBallAttack(){
        vulnerable = true;
    }

    public void Win(){
        StartCoroutine(WinScreen());
    }

    IEnumerator WinScreen(){
        yield return new WaitForSeconds(2f);
        SceneManager.LoadScene(0);
    }
}