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

public class ladderSystem : MonoBehaviour
{
	[Header ("Main Settings")]
	[Space]

	public string tagToCheck;
	public bool ladderActive = true;

	public bool useLadderHorizontalMovement = true;

	public bool moveInLadderCenter;

	public bool useLocalMovementDirection;

	public bool jumpOnThirdPersonEnabled = true;

	public bool jumpOnFirstPersonEnabled = true;

    [Space]
    [Header ("FBA Settings")]
    [Space]

    public bool canUseSimpleLaddersOnFBA;
    public bool useExtraFollowTransformPositionOffsetActiveFBA;

    public Vector3 extraFollowTransformPositionOffsetFBA;

	public bool changeViewToFBADuringLadderUsage;

    [Space]
	[Header ("Events Settings")]
	[Space]

	public bool useEventsEnterExitLadder;
	public eventParameters.eventToCallWithGameObject eventToSendCurrentPlayerOnEnter;
	public eventParameters.eventToCallWithGameObject eventToSendCurrentPlayerOnExit;

	[Space]

	public bool useEventsOnJump;

	public UnityEvent eventOnJump;

	[Space]
	[Header ("Gizmo Settings")]
	[Space]

	public bool showGizmo = true;
	public Color gizmoColor = Color.red;
	public float gizmoLength = 4;

	[Space]
	[Header ("Components")]
	[Space]

	public Transform ladderDirectionTransform;
	public Transform ladderRaycastDirectionTransform;


	GameObject currentPlayer;
	playerComponentsManager mainPlayerComponentsManager;
	playerLadderSystem mainPlayerLadderSystem;


	void OnTriggerEnter (Collider col)
	{
		checkTriggerInfo (col, true);
	}

	void OnTriggerExit (Collider col)
	{
		checkTriggerInfo (col, false);
	}

	public void checkTriggerInfo (Collider col, bool isEnter)
	{
		if (!ladderActive) {
			return;
		}

		if (!col.gameObject.CompareTag (tagToCheck)) {
			return;
		}

		if (isEnter) {
			currentPlayer = col.gameObject;

			mainPlayerComponentsManager = currentPlayer.GetComponent<playerComponentsManager> ();

			mainPlayerLadderSystem = mainPlayerComponentsManager.getPlayerLadderSystem ();

			mainPlayerLadderSystem.setLadderFoundState (true, this);

			if (ladderDirectionTransform == null) {
				ladderDirectionTransform = transform;
			}

			if (ladderRaycastDirectionTransform == null) {
				ladderRaycastDirectionTransform = transform;
			}
				
			mainPlayerLadderSystem.setLadderDirectionTransform (ladderDirectionTransform, ladderRaycastDirectionTransform);

			mainPlayerLadderSystem.setLadderHorizontalMovementState (useLadderHorizontalMovement);

			mainPlayerLadderSystem.setMoveInLadderCenterState (moveInLadderCenter);

			mainPlayerLadderSystem.setUseLocalMovementDirectionState (useLocalMovementDirection);

			if (useEventsEnterExitLadder) {
				eventToSendCurrentPlayerOnEnter.Invoke (currentPlayer);
			}

		} else {
			currentPlayer = col.gameObject;

			mainPlayerComponentsManager = currentPlayer.GetComponent<playerComponentsManager> ();

			mainPlayerLadderSystem = mainPlayerComponentsManager.getPlayerLadderSystem ();

			mainPlayerLadderSystem.setLadderFoundState (false, this);

			if (useEventsEnterExitLadder) {
				eventToSendCurrentPlayerOnExit.Invoke (currentPlayer);
			}
		}
	}

	public void checkEventOnJump ()
	{
		if (useEventsOnJump) {
			eventOnJump.Invoke ();
		}
	}

	public bool isJumpOnThirdPersonEnabled ()
	{
		return jumpOnThirdPersonEnabled;
	}

	public bool isJumpOnFirstPersonEnabled ()
	{
		return jumpOnFirstPersonEnabled;
	}

    //EDITOR FUNCTIONS
#if UNITY_EDITOR
    void OnDrawGizmos ()
	{
		if (!showGizmo) {
			return;
		}

		if (GKC_Utils.isCurrentSelectionActiveGameObject (gameObject)) {
			DrawGizmos ();
		}
	}

	void OnDrawGizmosSelected ()
	{
		DrawGizmos ();
	}

	void DrawGizmos ()
	{
		if (showGizmo) {
			if (ladderDirectionTransform != null) {
				GKC_Utils.drawGizmoArrow (transform.position - ladderDirectionTransform.forward * gizmoLength, ladderDirectionTransform.forward * gizmoLength, gizmoColor, 1, 20);

				GKC_Utils.drawGizmoArrow (transform.position, transform.up * gizmoLength, gizmoColor, 1, 20);
			}
		}
	}
#endif
}