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

namespace ArcherEnemy
{
	/// <summary>
	/// Decision checking if player is too close to the archer
	/// Used to trigger retreat/flee behavior
	/// </summary>
	[CreateAssetMenu(menuName = "Invector/FSM/Decisions/Archer/Player Too Close")]
	public class DEC_PlayerTooClose : vStateDecision
	{
		public override string categoryName => "Archer/Combat";
		public override string defaultName => "Player Too Close";

		[Header("Distance Configuration")]
		[Tooltip("Distance below which player is considered too close")]
		public float dangerDistance = 6f;

		[Tooltip("Optional: check only if player is approaching (not retreating)")]
		public bool checkIfApproaching = false;

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

		private Vector3 lastPlayerPosition;
		private bool hasLastPosition = false;

		public override bool Decide(vIFSMBehaviourController fsmBehaviour)
		{
			Transform target = GetTarget(fsmBehaviour);

			if (target == null)
			{
				if (enableDebug) Debug.Log("[DEC_PlayerTooClose] No target found");
				hasLastPosition = false;
				return false;
			}

			float distance = Vector3.Distance(fsmBehaviour.transform.position, target.position);
			bool tooClose = distance < dangerDistance;

			// Optional: check if player is approaching
			if (checkIfApproaching && hasLastPosition)
			{
				float previousDistance = Vector3.Distance(fsmBehaviour.transform.position, lastPlayerPosition);
				bool isApproaching = distance < previousDistance;

				if (!isApproaching)
				{
					tooClose = false; // Player is moving away, not a threat
				}
			}

			// Store current position for next frame
			lastPlayerPosition = target.position;
			hasLastPosition = true;

			if (enableDebug)
			{
				Debug.Log($"[DEC_PlayerTooClose] Distance: {distance:F1}m - {(tooClose ? "TOO CLOSE" : "SAFE")}");
			}

			return tooClose;
		}

		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;
		}
	}
}