using Invector.vCharacterController.AI.FSMBehaviour;
using UnityEngine;

namespace DemonBoss.Magic
{
	/// <summary>
	/// Decision checking if target has clear sky above (for meteor)
	/// </summary>
	[CreateAssetMenu(menuName = "Invector/FSM/Decisions/DemonBoss/Target Clear Sky")]
	public class DEC_TargetClearSky : vStateDecision
	{
		public override string categoryName => "DemonBoss/Magic";
		public override string defaultName => "Target Clear Sky";

		[Header("Sky Check Configuration")]
		[Tooltip("Check height above target")]
		public float checkHeight = 25f;

		[Tooltip("Obstacle check radius")]
		public float checkRadius = 2f;

		[Tooltip("Obstacle layer mask")]
		public LayerMask obstacleLayerMask = -1;

		[Header("Debug")]
		[Tooltip("Enable debug logging")]
		public bool enableDebug = false;

		[Tooltip("Show gizmos in Scene View")]
		public bool showGizmos = true;

		public override bool Decide(vIFSMBehaviourController fsmBehaviour)
		{
			Transform target = GetTarget(fsmBehaviour);
			if (target == null)
			{
				if (enableDebug) Debug.Log("[DEC_TargetClearSky] No target found");
				return false;
			}

			bool isClear = IsSkyClear(target.position);

			if (enableDebug)
			{
				Debug.Log($"[DEC_TargetClearSky] Sky above target: {(isClear ? "CLEAR" : "BLOCKED")}");
			}

			return isClear;
		}

		private bool IsSkyClear(Vector3 targetPosition)
		{
			Vector3 skyCheckPoint = targetPosition + Vector3.up * checkHeight;

			if (Physics.CheckSphere(skyCheckPoint, checkRadius, obstacleLayerMask))
			{
				return false;
			}

			Ray skyRay = new Ray(skyCheckPoint, Vector3.down);
			RaycastHit[] hits = Physics.RaycastAll(skyRay, checkHeight, obstacleLayerMask);

			foreach (var hit in hits)
			{
				if (hit.point.y <= targetPosition.y + 0.5f) continue;

				return false;
			}

			return true;
		}

		private Transform GetTarget(vIFSMBehaviourController fsmBehaviour)
		{
			// Try through AI controller
			var aiController = fsmBehaviour as Invector.vCharacterController.AI.vIControlAI;
			if (aiController != null && aiController.currentTarget != null)
				return aiController.currentTarget.transform;

			// Fallback - find player
			GameObject player = GameObject.FindGameObjectWithTag("Player");
			return player?.transform;
		}

		private void OnDrawGizmosSelected()
		{
			if (!showGizmos) return;

			GameObject player = GameObject.FindGameObjectWithTag("Player");
			if (player == null) return;

			Vector3 targetPos = player.transform.position;
			Vector3 skyCheckPoint = targetPos + Vector3.up * checkHeight;

			Gizmos.color = Color.cyan;
			Gizmos.DrawWireSphere(skyCheckPoint, checkRadius);

			Gizmos.color = Color.yellow;
			Gizmos.DrawLine(targetPos, skyCheckPoint);

			Gizmos.color = Color.red;
			Gizmos.DrawWireSphere(targetPos, 0.5f);
		}
	}
}