using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System;
public enum GameState
{
    Vertical,
    DPUpper,
    DPMiddle,
    DPlower
}
public class GameManager : Singleton<GameManager>
{
    public GameObject[] canvas;
    public GameObject[] cameras;
    public GameObject[] looks;
    public GameState curState;
    public GameObject curCamera;
    private GameObject curCanvas;
    public GameObject curLook;
    public float timeflag;
    public GameObject btns;
    protected override void Awake()
    {
        base.Awake();
        curState = GameState.Vertical;
        timeflag = 2;
    }


    private void OnEnable()
    {
        //timeflag = 0;
        //TaskManager.Instance.StartTask();
    }
    private void Start()
    {
        foreach (GameObject obj in canvas)
        {
            obj.SetActive(false);
        }
        foreach (GameObject obj in cameras)
        {
            obj.SetActive(false);
        }
        foreach (GameObject obj in looks)
        {
            obj.SetActive(false);
        }
    }

    private void Update()
    {
        SwitchCamera();
    }

    void SwitchCamera()
    {
        if (timeflag<=2) {
            timeflag += Time.deltaTime;
        }
        
        switch (curState)
        {
            case GameState.Vertical:
                if (curCamera && curCamera != cameras[0])
                {
                    curCamera.SetActive(false);
                }
                curCamera = cameras[0];
                if (curCanvas && curCanvas != canvas[0])
                {
                    curCanvas.SetActive(false);
                }
                curCanvas = canvas[0];
                curLook = null;
                foreach (GameObject obj in looks)
                {
                    if (obj.activeInHierarchy) {
                        obj.SetActive(false);
                    }
                }
                break;
            case GameState.DPUpper:
                if (curCamera && curCamera != cameras[1])
                {
                    curCamera.SetActive(false);
                }
                curCamera = cameras[1];
                if (curCanvas && curCanvas != canvas[1])
                {
                    curCanvas.SetActive(false);
                }
                curCanvas = canvas[1];
                if (curLook && curLook != looks[0])
                {
                    curLook.SetActive(false);
                }
                curLook = looks[0];
                break;
            case GameState.DPMiddle:
                if (curCamera && curCamera != cameras[2])
                {
                    curCamera.SetActive(false);
                }
                curCamera = cameras[2];
                if (curCanvas && curCanvas != canvas[1])
                {
                    curCanvas.SetActive(false);
                }
                curCanvas = canvas[1];
                if (curLook && curLook != looks[1])
                {
                    curLook.SetActive(false);
                }
                curLook = looks[1];
                break;
            case GameState.DPlower:
                if (curCamera && curCamera != cameras[3])
                {
                    curCamera.SetActive(false);
                }
                curCamera = cameras[3];
                if (curCanvas && curCanvas != canvas[1])
                {
                    curCanvas.SetActive(false);
                }
                curCanvas = canvas[1];
                if (curLook && curLook != looks[2])
                {
                    curLook.SetActive(false);
                }
                curLook = looks[2];
                break;
        }
        if (timeflag >= 2)
        {
            curCanvas.SetActive(true);
        }
        curCamera.SetActive(true);
        if (curLook) {
            curLook.SetActive(true);
        }
        
    }

    public void setCurState(int state)
    {
        int num = 0;
        if (curState == GameState.Vertical)
        {
            num = 0;
        }
        else if (curState == GameState.DPUpper)
        {
            num=1;
        }
        else if (curState == GameState.DPMiddle)
        {
            num=2;
        }
        else if (curState == GameState.DPlower)
        {
            num=3;
        }
        if (num == state) return;
        curCanvas.SetActive(false);
        timeflag = 0;
        if (state == 0)
        {
            curState = GameState.Vertical;
            btns.SetActive(false);
        }
        else if (state == 1)
        {
            curState = GameState.DPUpper;
            btns.SetActive(true);
        }
        else if (state == 2)
        {
            curState = GameState.DPMiddle;
            btns.SetActive(true);
        }
        else if (state == 3)
        {
            curState = GameState.DPlower;
            btns.SetActive(true);
        }
    }

}