using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.SceneManagement;

public class PickUp : MonoBehaviour
{
    Camera camera;
    public int totalCubeCount;
    int currentCubeCount = 0;
    //public Text cubeCountText;
    bool cubeVisible;
    bool nextLevelDoorVisible;

    // Use this for initialization
    void Awake()
    {
        camera = transform.GetChild(0).GetComponent<Camera>();
    }

    // Update is called once per frame
    void Update()
    {
        if (camera != null)
        {
            RaycastHit hit;
            Ray ray = camera.ScreenPointToRay(Input.mousePosition);

            if (Physics.Raycast(ray, out hit))
            {
                Transform objectHit = hit.transform;

                if (objectHit.tag == "Cube")
                {
                    cubeVisible = true;

                    if (Input.GetKeyDown(KeyCode.E))
                    {
                        objectHit.gameObject.SetActive(false);
                        currentCubeCount += 1;
                        cubeVisible = false;
                        //cubeCountText.text = "Cubes Found: " + currentCubeCount + "/" + totalCubeCount;
                    }
                }
                else
                {
                    cubeVisible = false;
                }
            }
            if (Physics.Raycast(ray, out hit))
            {
                if (hit.transform.tag == "NextLevelDoor" && currentCubeCount == totalCubeCount)
                {
                    nextLevelDoorVisible = true;

                    if (Input.GetKeyDown(KeyCode.E))
                    {
                        SceneManager.LoadScene(SceneManager.GetActiveScene().buildIndex + 1);
                    }
                }
                else
                {
                    nextLevelDoorVisible = false;
                }
            }
        }
        else
        {
            Debug.Log("No Camera Found");
        }
    }

    void OnGUI()
    {

        if (cubeVisible)
        {
            GUI.Label(new Rect(Screen.width / 2 - 75, Screen.height - 100, 150, 30), "Press 'E' to collect cube");
        }

        if (nextLevelDoorVisible)
        {
            GUI.Label(new Rect(Screen.width / 2 - 75, Screen.height - 100, 150, 30), "Press 'E' to advance to the next level");
        }

        GUIStyle cubeCountStyle = new GUIStyle(GUI.skin.label);
        cubeCountStyle.fontSize = 30;
        GUIStyle cubeCountStyleAllFound = new GUIStyle(GUI.skin.label);
        cubeCountStyleAllFound.fontSize = 30;
        cubeCountStyleAllFound.normal.textColor = Color.green;


        if (currentCubeCount != totalCubeCount)
        {
            GUI.Label(new Rect(10, 10, 300, 60), "Cubes Found: " + currentCubeCount + "/" + totalCubeCount, cubeCountStyle);
        }
        else
        {
            GUI.Label(new Rect(10, 10, 300, 60), "Cubes Found: " + currentCubeCount + "/" + totalCubeCount, cubeCountStyleAllFound);
        }
    }

}