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

public class HitboxSpawner : MonoBehaviour {
    [SerializeField] public float spawnPeriod = 0f;
    [SerializeField] public float activeTime = 0f;
    [SerializeField] private float fadeTime = 0f;

    [SerializeField] public GameObject hitboxToSpawn;
    [SerializeField] public SpriteRenderer effectSpriteRenderer;
    [SerializeField] public AudioSource audioSource;

    private bool flip = false;
    private SkillID skillToSpawn = SkillID.BASIC_ATTACK;
    private int skillChoreographyIndex = 0;


    private IEnumerator SpawnHitbox() {
		GameObject hitbox = Instantiate(hitboxToSpawn);
		HitboxController hbc = hitbox.GetComponent<HitboxController>();
		SkillStats stats = PlayerMovement.GetSkillStats(skillToSpawn);
        activeTime = stats.speedModifier;
		hbc.Setup(stats.maxMonstersHit, stats.hitboxHitCounts[skillChoreographyIndex], stats.hitboxPowers[skillChoreographyIndex]);
        hitbox.transform.position = transform.position;
        hitbox.transform.localScale = transform.localScale;
        hitbox.transform.SetParent(transform);
        if (flip) {
            hbc.flip = true;
		}
        Debug.Log("SpawnHitbox Tick " + skillToSpawn.ToString());
		yield return new WaitForSeconds(spawnPeriod);
        StartCoroutine("SpawnHitbox");
    }

    private void Die() {
        Destroy(gameObject);
    }

    // Start is called before the first frame update
    public void Setup(bool flip, SkillID skillToSpawn, int skillChoreographyIndex) {
        this.flip = flip;
        this.skillToSpawn = skillToSpawn;
        this.skillChoreographyIndex = skillChoreographyIndex;

        if (flip) {
            transform.localScale = new Vector3(-1f, 1f, 1f);
        } else {
            transform.localScale = new Vector3(1f, 1f, 1f);
        }

        if (audioSource != null) {
            audioSource.Play();
        }

        StartCoroutine(SpawnHitbox());
        Invoke("Die", activeTime);
        Invoke("StartFadeOut", activeTime - fadeTime);
    }

    private void StartFadeOut() {
        StartCoroutine("FadeOut");
    }

    IEnumerator FadeOut() {
        for (float i = fadeTime; i >= 0; i -= Time.deltaTime) {
            // TODO: Implement fade
            // text.alpha = i / fadeTime;
            effectSpriteRenderer.color = new Color(1f, 1f, 1f, i / fadeTime);
            yield return new WaitForEndOfFrame();
        }
        effectSpriteRenderer.color = new Color(1f, 1f, 1f, 0f);
    }
}