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

public class EagleMovement : MonoBehaviour
{
    public Transform[] patrolPoints;
    public float speed;
    Transform currentPatrolPoint;
    int currentPatrolIndex;

    public Transform target1;
    public Transform target2;
    public float chaseRange;

    void Start()
    {
        currentPatrolIndex = 0;
        currentPatrolPoint = patrolPoints[currentPatrolIndex];
        GetComponent<Rigidbody2D>().constraints = RigidbodyConstraints2D.FreezePositionX;
    }

    void Update()
    {
        GetComponent<Rigidbody2D>().constraints = RigidbodyConstraints2D.FreezeAll;
        float distanceToTarget1 = Vector3.Distance(transform.position, target1.position);
        float distanceToTarget2 = Vector3.Distance(transform.position, target2.position);
        if (distanceToTarget1 < chaseRange)
        {
            GetComponent<Rigidbody2D>().constraints = RigidbodyConstraints2D.None;
            GetComponent<Rigidbody2D>().freezeRotation = false;
            Vector3 targetDir = target1.position - transform.position;
            float angle = Mathf.Atan2(targetDir.y, targetDir.x) * Mathf.Rad2Deg - 90f;
            Quaternion q = Quaternion.AngleAxis(angle, Vector3.forward);
            transform.rotation = Quaternion.RotateTowards(transform.rotation, q, 20);
            transform.Translate(Vector3.up * Time.deltaTime * speed);
        }

        if (distanceToTarget2 < chaseRange)
        {
            GetComponent<Rigidbody2D>().constraints = RigidbodyConstraints2D.None;
            GetComponent<Rigidbody2D>().freezeRotation = false;
            Vector3 targetDir = target2.position - transform.position;
            float angle = Mathf.Atan2(targetDir.y, targetDir.x) * Mathf.Rad2Deg - 90f;
            Quaternion q = Quaternion.AngleAxis(angle, Vector3.forward);
            transform.rotation = Quaternion.RotateTowards(transform.rotation, q, 20);
            transform.Translate(Vector3.up * Time.deltaTime * speed);
        }

        if (target1.position.x > transform.position.x && distanceToTarget1 < chaseRange)
        {
            transform.localScale = new Vector3(1, -1, 1);
        }
        else if (target1.position.x < transform.position.x && distanceToTarget1 < chaseRange)
        {
            transform.localScale = new Vector3(-1, -1, 1);
        }

        if (target2.position.x > transform.position.x && distanceToTarget2 < chaseRange)
        {
            transform.localScale = new Vector3(1, -1, 1);
        }
        else if (target2.position.x < transform.position.x && distanceToTarget2 < chaseRange)
        {
            transform.localScale = new Vector3(-1, -1, 1);
        }

        if (gameObject.transform.position.y == -50 || gameObject.transform.position.y < -50)
        {
            Destroy(gameObject);
        }

        if(distanceToTarget1 > chaseRange)
        {
            GetComponent<Rigidbody2D>().freezeRotation = true;
        }
    }

    void OnCollisionEnter2D(Collision2D collision)
    {
        if (collision.collider.tag == "Player")
        {
            StartCoroutine(Dying());

            if(collision.collider.name == "Player1")
            {
                StartCoroutine(Player1Hurt());
            }

            if(collision.collider.name == "Player2")
            {
                StartCoroutine(Player2Hurt());
            }
        }
    }

    IEnumerator Dying()
    {
        GetComponent<Rigidbody2D>().constraints = RigidbodyConstraints2D.FreezePositionX;
        GetComponent<BoxCollider2D>().enabled = false;
        GetComponent<Rigidbody2D>().AddForce(Vector2.right * 200);
        GetComponent<Rigidbody2D>().gravityScale = 10;
        yield return new WaitForSeconds(1);
        Destroy(gameObject);
    }

    IEnumerator Player1Hurt()
    {
        target1.GetComponent<Animator>().SetBool("IsHurt", true);
        yield return new WaitForSeconds(1/2);
        target1.GetComponent<Animator>().SetBool("IsHurt", false);
    }

    IEnumerator Player2Hurt()
    {
        target2.GetComponent<Animator>().SetBool("IsHurt", true);
        yield return new WaitForSeconds(1 / 2);
        target2.GetComponent<Animator>().SetBool("IsHurt", false);
    }
}