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

public class Boss1Controller : MonoBehaviour {
    [SerializeField] Rigidbody2D body;
    [SerializeField] float waitTime = 5f;
    [SerializeField] float smoothness = 1f;

    [SerializeField] int border = 64;
    [SerializeField] GameObject bullet;
    [SerializeField] GameObject laserBullet;
    [SerializeField] GameObject bulletEffect;

    [SerializeField] AudioClip shoot;
    [SerializeField] AudioClip shoot2;
    [SerializeField] AudioClip laserSound;

    int intentX = 0;
    int intentY = 0;
    bool meandering = false;
    AudioSource audioSource;
    PLIGameController game;

    // Start is called before the first frame update
    void Start() {
        body = GetComponent<Rigidbody2D>();
        game = GameObject.FindGameObjectWithTag("PegLegIoGame").GetComponent<PLIGameController>();
        audioSource = game.GetComponent<AudioSource>();
        StartCoroutine(PickSomewhere());
        StartCoroutine(GoCraCy());
    }

    IEnumerator PickSomewhere() {
        while (true) {
            yield return new WaitForSeconds(waitTime);
            if (meandering) {
                intentX = Random.Range(-256 / 2 + border, 256 / 2 - border);
                intentY = Random.Range(64, 96);
            }
        }
    }

    IEnumerator GoCraCy() {
        // TODO: charge laser
        yield return new WaitForSeconds(5.0f);
        audioSource.PlayOneShot(laserSound);
        // Get blown back
        intentY = 100;
        for (int i = 0; i < 40; i++) {
            float xDelta = 40f;
            float yDelta = -40f;
            float bulletSpeed = -500f;
            for (int _ = 0; _ < 2; _++) {
                GameObject b1 = Instantiate(laserBullet);
                b1.transform.position = new Vector2(
                    transform.position.x + xDelta - 6,
                    transform.position.y + yDelta);
                b1.GetComponent<Rigidbody2D>().velocity = new Vector2(0f, bulletSpeed);

                GameObject b2 = Instantiate(laserBullet);
                b2.transform.position = new Vector2(
                    transform.position.x + xDelta,
                    transform.position.y + yDelta + 2);
                b2.GetComponent<Rigidbody2D>().velocity = new Vector2(0f, bulletSpeed);


                GameObject b3 = Instantiate(laserBullet);
                b3.transform.position = new Vector2(
                    transform.position.x + xDelta + 6,
                    transform.position.y + yDelta);
                b3.GetComponent<Rigidbody2D>().velocity = new Vector2(0f, bulletSpeed);

                xDelta *= -1f;
            }
            yield return new WaitForSeconds(0.06f);
        }
        yield return new WaitForSeconds(3.0f);
        meandering = true;
        while (true) {
            float bulletsPerRevolution = 15f;
            float bulletSpeed = 100f;
            int c = 0, d = 0;
            float a = 0f;
            for (d = 0; d < 8; d++) {
                a = -1f * Mathf.PI;
                audioSource.PlayOneShot(shoot, 0.3f);
                GameObject e1 = Instantiate(bulletEffect);
                e1.transform.position = transform.position;
                for (c = 0; c < bulletsPerRevolution; c++) {
                    GameObject b1 = Instantiate(bullet);
                    b1.transform.position = transform.position;
                    b1.GetComponent<Rigidbody2D>().velocity = new Vector2(bulletSpeed * Mathf.Cos(a), bulletSpeed * Mathf.Sin(a));
                    GameObject b2 = Instantiate(bullet);
                    b2.transform.position = transform.position;
                    b2.GetComponent<Rigidbody2D>().velocity = new Vector2(
                        0.5f * bulletSpeed * Mathf.Cos(a + Mathf.PI),
                        0.5f * bulletSpeed * Mathf.Sin(a + Mathf.PI));
                    a += Mathf.PI / bulletsPerRevolution;
                }
                yield return new WaitForSeconds(0.08f);
            }
            yield return new WaitForSeconds(2f);
            c = 0;
            a = -1f*Mathf.PI;
            bulletsPerRevolution = 10f;
            bulletSpeed = 60f;
            while (c < 10) {
                c++;
                audioSource.PlayOneShot(shoot2, 0.3f);
                GameObject e1 = Instantiate(bulletEffect);
                e1.transform.position = transform.position;
                for (int s = 1; s <= 3; s++) {
                    GameObject b1 = Instantiate(bullet);
                    b1.transform.position = transform.position;
                    b1.GetComponent<Rigidbody2D>().velocity = new Vector2(
                        s * bulletSpeed * Mathf.Cos(a),
                        s * bulletSpeed * Mathf.Sin(a));
                    GameObject b2 = Instantiate(bullet);
                    b2.transform.position = transform.position;
                    b2.GetComponent<Rigidbody2D>().velocity = new Vector2(
                        s * bulletSpeed * Mathf.Cos(a + Mathf.PI / 12),
                        s * bulletSpeed * Mathf.Sin(a + Mathf.PI / 12));
                    GameObject b3 = Instantiate(bullet);
                    b3.transform.position = transform.position;
                    b3.GetComponent<Rigidbody2D>().velocity = new Vector2(
                        s * bulletSpeed * Mathf.Cos(a - Mathf.PI / 12),
                        s * bulletSpeed * Mathf.Sin(a - Mathf.PI / 12));
                }
                a += Mathf.PI / bulletsPerRevolution;
                yield return new WaitForSeconds(0.2f);
            }
            yield return new WaitForSeconds(1.5f);
        }
    }

    // Update is called once per frame
    void FixedUpdate() {
        Vector2 vel = body.velocity;
        Vector2.SmoothDamp(transform.position,
            new Vector2(intentX, intentY),
            ref vel,
            smoothness);
        body.velocity = vel;
    }
}