using System;
using System.Collections.Generic;
using System.Linq;
using Core.Extensions;
using UnityEngine;
using Random = UnityEngine.Random;

public class YoumuDeflect : Ability
{
	[SerializeField] private Camera cam;
	private List<Projectile> projectilesInRange = new();
	[Header("Deflection")] 
	[SerializeField] private float deflectionSpeed;
	[SerializeField] private float deflectionSpeedVariance;
	[SerializeField] private float deflectionAngleMin = -48;
	[SerializeField] private float deflectionAngleMax = 90;
	[SerializeField] private Projectile chargeProjectile;
	[SerializeField] private float destructionChance;

	[Header("Entity Detection")]
	[SerializeField] private float detectionRadius;
	[SerializeField] private LayerMask entityLayer;
	
	[Header("SlashCharge")]
	[SerializeField] private float mouseHoldTime;
	private float currentMouseHoldTime;
	private float currentChargeTime;
	private bool isCharging;
	[SerializeField] private float maxChargeTime;
	[SerializeField] private float chargeCooldown;
	private float currentChargeCooldown;
	private float currentUnleashedChargeTime;
	[Header("Charge Effects")]
	[SerializeField] private AudioClip chargeSlashSFX;
	[SerializeField] private float chargeVolume = 1f;
	[SerializeField] private Transform chargeMeter;
	[Header("Effects")]
	[SerializeField] private ParticleSystem deflectionParticles;
	[SerializeField] private GameObject chargeSweepEffect;
	[SerializeField] private AudioClip noHitSlashSFX;
	[SerializeField] private float noHitVolume = 1f;
	

	protected override void AbilityEffects()
	{
		base.AbilityEffects();
		if (currentChargeCooldown > 0)
		{
			RegularDeflection();
		}
		else
		{
			currentMouseHoldTime = mouseHoldTime;
		}
	}

	private void RegularDeflection()
	{
		if (projectilesInRange.Count > 0)
		{
			DeflectProjectiles();
		}
		else
		{
			WaveManager.instance.audioSource.PlayOneShot(noHitSlashSFX, noHitVolume);
		}
		foreach (Enemy enemy in DetectEnemies())
		{
			enemy.TakeDamage(power);
		}
	}

	private void DeflectProjectiles()
	{
		GameManager.instance.deflections += projectilesInRange.Count;
		foreach (Projectile projectile in projectilesInRange.ToList())
		{
			if (!projectile)
			{
				projectilesInRange.Remove(projectile);
				continue;
			}
			projectile.transform.eulerAngles = new Vector3(0, 0, Random.Range(deflectionAngleMin, deflectionAngleMax));
			projectile.direction = projectile.transform.right;
			projectile.tag = tag;
			projectile.speed = deflectionSpeed + Random.Range(-deflectionSpeedVariance, deflectionSpeedVariance);
			ParticleSystem newParticles = Instantiate(deflectionParticles, projectile.transform);
			projectile.Deflected();
			float destructionRoll = Random.Range(0f, 1f);
			if (destructionRoll < destructionChance)
			{
				Destroy(projectile.gameObject);
			}
			projectilesInRange.Remove(projectile);
		}
		WaveManager.instance.audioSource.PlayOneShot(abilitySound, volume);
	}
	

	private void OnTriggerEnter2D(Collider2D other)
	{
		if (!other.CompareTag(tag))
		{
			if (other.TryGetComponent(out Projectile isProjectile) && isProjectile.deflectable)
			{
				projectilesInRange.Add(isProjectile);
			}
		}
	}

	private void OnTriggerExit2D(Collider2D other)
	{
		if (!other.CompareTag(tag) && other.TryGetComponent(out Projectile isProjectile) && projectilesInRange.Contains(isProjectile))
		{
			projectilesInRange.Remove(isProjectile);
		}
	}
	private void ShootBullet(Projectile projectileToShoot, int damage)
	{
		Debug.Log(damage);
		direction = cam.ScreenToWorldPoint(Input.mousePosition);
		Projectile newProjectile = Instantiate(projectileToShoot, origin.position, Quaternion.identity);
		newProjectile.transform.Lookat2D(direction);
		newProjectile.damage = damage;
		newProjectile.tag = tag;
		newProjectile.playerBullet = true;
	}
	protected override void Update()
	{
		base.Update();

		if (currentMouseHoldTime > 0)
		{
			currentMouseHoldTime -= Time.deltaTime;
			if (currentMouseHoldTime <= 0 && Input.GetMouseButton(1) && currentChargeTime <= 0)
			{
				isCharging = true;
				currentChargeTime += mouseHoldTime;
			}
			else if (Input.GetMouseButtonUp(1))
			{
				RegularDeflection();
				currentMouseHoldTime = 0;
				isCharging = false;
			}
		}
		if (isCharging && Input.GetMouseButton(1)) //this code REEKS
		{
			currentChargeTime += Time.deltaTime;
			chargeMeter.localScale = new Vector3(1f, Math.Clamp(currentChargeTime, 0, maxChargeTime)/maxChargeTime, 1f);
		}
		else if (isCharging && Input.GetMouseButtonUp(1))
		{
			Debug.Log("here");
			ShootBullet(chargeProjectile, power * (int)Math.Clamp(currentChargeTime, 0, maxChargeTime));
			currentChargeTime = 0;
			WaveManager.instance.audioSource.PlayOneShot(chargeSlashSFX, chargeVolume);
			currentChargeCooldown = chargeCooldown;
			isCharging = false;
			chargeMeter.localScale = new Vector3(0f, 1f, 1f);
		}
		if (currentChargeCooldown > 0)
		{
			currentChargeCooldown -= Time.deltaTime;
		}
		//Debug.Log(currentChargeTime);
	}

	private Enemy[] DetectEnemies()
	{
		Collider2D[] entitiesFound = Physics2D.OverlapCircleAll(transform.position, detectionRadius, entityLayer);
		List<Enemy> enemiesFound = new();
		foreach (Collider2D foundEntity in entitiesFound)
		{
			if (!foundEntity.CompareTag(tag) && foundEntity.TryGetComponent(out Enemy isEnemy) && !isEnemy.isBossEnemy)
			{
				enemiesFound.Add(isEnemy);
			}
		}
		return enemiesFound.ToArray();
	}
}