using Assets.WasapiAudio.Scripts.Unity;
using System.Collections.Generic;
using System.Collections;
using UnityEditor;
using UnityEngine.SceneManagement;
using UnityEngine.UI;
using UnityEngine.VFX;
using UnityEngine;


public class Loader : MonoBehaviour {
    public Text currentVis;
    public Canvas vfxMenu;

    private static bool menuVisible;
    private Scene scene;
    private KeyCode NextButton = KeyCode.Space;
    private KeyCode PrevButton = KeyCode.Backspace;
    private KeyCode MenuButton = KeyCode.Escape;

    public float mouseHideTimeSeconds = 3f;
    public float mouseHideThreshold = 3f;
    float mouseLastMoveTime;
    Vector3 mouseLastMovePos;

    void Awake() {
        ToggleMenu(menuVisible);
    }

    void Start() {
        scene = SceneManager.GetActiveScene();
        currentVis.text = scene.name;
        // Debug.Log("Active Scene name is: " + scene.name + "\nActive Scene index: " + scene.buildIndex);

        // cursor visibility
        mouseLastMoveTime = Time.timeSinceLevelLoad;
        mouseLastMovePos = Input.mousePosition;

    }

    void Update() {
        if (Input.GetKeyDown(NextButton)) {
            NextScene();
        }

        if (Input.GetKeyDown(PrevButton)) {
            PrevScene();
        }

        if (Input.GetKeyDown(MenuButton)) {
            ToggleMenu(!menuVisible);
        }

        CheckMouseVisibility();
    }

    void VfxMenuVisible(bool v) {
        if (vfxMenu) vfxMenu.enabled = v;
    }

    void ToggleMenu(bool visible) {
        if (visible) {
            gameObject.GetComponent<Canvas>().enabled = true;
            VfxMenuVisible(true);
        } else {
            gameObject.GetComponent<Canvas>().enabled = false;
            VfxMenuVisible(false);
        }

        menuVisible = visible;
    }

    void CheckMouseVisibility() {
        if (menuVisible) {
            Vector2 dx = Input.mousePosition - mouseLastMovePos;
            bool move = (dx.sqrMagnitude > (mouseHideThreshold * mouseHideThreshold));
            mouseLastMovePos = Input.mousePosition;

            if (move)
                mouseLastMoveTime = Time.timeSinceLevelLoad;

            Cursor.visible = (Time.timeSinceLevelLoad - mouseLastMoveTime) < mouseHideTimeSeconds;
        } else {
            Cursor.visible = false;
        }
    }

    public void NextScene() {
        int current = scene.buildIndex;
        int next = (current + 1) % (SceneManager.sceneCountInBuildSettings);

        // welcome is at 0. skip it
        if (next == 0) next = 1;
        if (next != current) LoadScene(next);
    }

    public void PrevScene() {
        int current = scene.buildIndex;
        int prev = (current - 1);
        // check for welcome
        if (prev <= 0) prev = SceneManager.sceneCountInBuildSettings - 1;
        if (prev != current) LoadScene(prev);
    }

    public void LoadScene(int i) {
        SceneManager.LoadScene(i);
    }

    public void Quit() {
        // if (EditorApplication) EditorApplication.isPlaying = false;
        Application.Quit();
    }

    // IEnumerator LoadScene(int i) {
    //     AsyncOperation asyncLoad = SceneManager.LoadSceneAsync(i);

    //     // Wait until the asynchronous scene fully loads
    //     while (!asyncLoad.isDone)
    //     {
    //         yield return null;
    //     }
    // }

}