using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;
#if ENABLE_INPUT_SYSTEM
using UnityEngine.InputSystem;
#endif

public class BF_SnowAssetManager : MonoBehaviour
{
    public GameObject UIText;
    public int showcaseIndex = 0;
    [HideInInspector] public int subShowcaseIndex = 0;
    public List<GameObject> showcasesGO;
    public List<GameObject> cameras;
    public List<GameObject> lights;
    public List<Material> skyboxes;
    [Space]
    public GameObject specialCamera;
    public GameObject specialButton;
    public GameObject specialInfo;
    private int maxIndex = 4;
    [HideInInspector] public int maxSubIndex = 3;

    [HideInInspector] public UnityEvent m_ShowcaseChange = new UnityEvent();
    // Start is called before the first frame update
    void Start()
    {
        maxIndex = showcasesGO.Count - 1;
        SwitchShowcase(0);
        SwitchSubShowcase(0);
        RenderSettings.fog = true;
        RenderSettings.fogDensity = 0.00f;
        UIText.SetActive(false);
        specialCamera.SetActive(false);
        specialButton.SetActive(true);
        specialInfo.SetActive(true);
    }

    public void SwitchShowcase(int addIndex)
    {
        for (int i = 0; i <= maxIndex; i++)
        {
            showcasesGO[i].SetActive(false);
            cameras[i].SetActive(false);
            lights[i].SetActive(false);
        }
        showcaseIndex += addIndex;
        if (showcaseIndex <= -1)
        {
            showcaseIndex = maxIndex;
        }
        else if (showcaseIndex == maxIndex + 1)
        {
            showcaseIndex = 0;
        }
        showcasesGO[showcaseIndex].SetActive(true);
        cameras[showcaseIndex].SetActive(true);
        lights[showcaseIndex].SetActive(true);
        RenderSettings.skybox = skyboxes[showcaseIndex];
        subShowcaseIndex = 0;
        m_ShowcaseChange.Invoke();

        if(showcaseIndex != 0)
        {
            RenderSettings.fogDensity = 0.001f;
            specialCamera.SetActive(false);
            specialButton.SetActive(false);
            specialInfo.SetActive(false);
        }
        else
        {
            specialCamera.SetActive(false);
            RenderSettings.fogDensity = 0.00f;
            specialButton.SetActive(true);
            specialInfo.SetActive(true);
        }
    }

    public void SwitchSubShowcase(int addIndex)
    {
        subShowcaseIndex += addIndex;
        if (subShowcaseIndex <= -1)
        {
            subShowcaseIndex = maxSubIndex;
        }
        else if (subShowcaseIndex == maxSubIndex + 1)
        {
            subShowcaseIndex = 0;
        }
        m_ShowcaseChange.Invoke();
    }

    public void ActivateSpecialCamera()
    {
        specialCamera.SetActive(!specialCamera.activeInHierarchy);
        cameras[0].SetActive(!cameras[0].activeInHierarchy);
    }

    private void Update()
    {
#if ENABLE_LEGACY_INPUT_MANAGER
        if (Input.GetKeyDown(KeyCode.Alpha1))
        {
            SwitchSubShowcase(-1);
        }
        if (Input.GetKeyDown(KeyCode.Alpha2))
        {
            SwitchSubShowcase(1);
        }
#else
        if (Keyboard.current.digit1Key.wasPressedThisFrame)
        {
            SwitchSubShowcase(-1);
        }
        if (Keyboard.current.digit2Key.wasPressedThisFrame)
        {
            SwitchSubShowcase(1);
        }
#endif
    }
}