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

public class Loader : MonoBehaviour {
    public KeyCode NextButton = KeyCode.Space;
    public KeyCode PrevButton = KeyCode.Return;
    public KeyCode MenuButton = KeyCode.Escape;

    public GameObject[] vis;
    public GameObject menu;
    public Text currentVis;

    private int _current = 0;
    private int _count;

    private bool _menu_visible = false;

    void Awake() {
        vis = GameObject.FindGameObjectsWithTag("VFX");
        _count = vis.Length;

        foreach (GameObject v in vis) {
            // all visualisations are active
            // but their vfx components are disabled in editor
            v.SetActive(false);
            v.GetComponent<VisualEffect>().enabled = true;
            // v.GetComponent<VfxAudioSpectrumDataBinder>().enabled = true;

            // look for a canvas in children
            // bit sketchy...
            Canvas v_menu = v.GetComponentInChildren<Canvas>();
            if (v_menu) v_menu.enabled = false;
        }

        ToggleMenu(_menu_visible);
    }

    void Start() {
        foreach (GameObject v in vis) {
            Debug.Log(v.ToString());
        }

        foreach (var device in Microphone.devices) {
            Debug.Log("Microphone: " + device);
        }

        LoadVis(0);
    }

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

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

    void LoadVis(int i) {
        _current = i;
        vis[i].SetActive(true);
        currentVis.text = vis[i].name;

        // ensure menu is synced on vis change
        ToggleMenu(_menu_visible);
    }

    void LoadNextVis() {
        vis[_current].SetActive(false);
        int next = (_current + 1) % _count;
        LoadVis(next);
    }

    void VisMenuVisible(int i, bool v) {
        Canvas v_menu = vis[i].GetComponentInChildren<Canvas>();
        if (v_menu) v_menu.enabled = v;
    }

    void ToggleMenu(bool visible) {
        if (visible) {
            menu.GetComponent<Canvas>().enabled = true;
            VisMenuVisible(_current, true);
        } else {
            menu.GetComponent<Canvas>().enabled = false;
            VisMenuVisible(_current, false);
        }

        _menu_visible = visible;
    }
}