using FS_ThirdPerson;
using System;
using System.Collections;
using UnityEngine;

public class GlideController : SystemBase
{
    public bool InAction { get; private set; }
    public override SystemState State { get; } = SystemState.Other;
    public bool GlideInputHolding { get; private set; }

    ICharacter player;
    PlayerController playerController;
    CharacterController characterController;

    private void Start()
    {
        player = GetComponent<ICharacter>();
        playerController = GetComponent<PlayerController>();
        characterController = GetComponent<CharacterController>();
    }

    public void Update()
    {
        GlideInputHolding = Input.GetKeyDown(KeyCode.Space);
    }

    public override void HandleFixedUpdate() {
        if (playerController.IsInAir && GlideInputHolding)
        {
            if (!InAction)
            {
                StartCoroutine(StartGliding());
            } else
            {
                StartCoroutine(StopGliding());
            }
        }
    }

    private IEnumerator StartGliding()
    {
        if (InAction) { yield return null; }
        InAction = true;
        Debug.Log("Gliding starts");

        Debug.Log($"Velocity: {characterController.velocity}");

        player.OnStartSystem(this);
        if (playerController.WaitToStartSystem)
            yield return new WaitUntil(() => playerController.WaitToStartSystem == false);
    }

    private IEnumerator StopGliding()
    {
        if (!InAction) { yield return null; }
        InAction = false;
        Debug.Log("Gliding stops");

        player.OnEndSystem(this);
    }
}