using System.Collections;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;

public class StaticCamRoom : MonoBehaviour
{
    // these will be hidden when room is entered
    public Transform camPosition;
    public Transform[] objectsToHide;
    public float camZoom = 5f;

    public void RoomEnter()
    {
        StopAllCoroutines();
        foreach (var obj in objectsToHide)
        {
            StartCoroutine(FadeOutMaterial(0.5f, obj.gameObject));
        }
    }

    public void RoomExit(List<Transform> wallsToKeep)
    {
        StopAllCoroutines();
        foreach (var obj in objectsToHide)
        {
            if (!wallsToKeep.Contains(obj))
                StartCoroutine(FadeInMaterial(0.5f, obj.gameObject));
        }
    }

    private void OnTriggerEnter(Collider other)
    {
        CameraController controller = other.gameObject.GetComponent<CameraController>();

        if (controller != null)
        {
            controller.SetCurrentPosition(camPosition.position, camZoom);
            controller.AddToRoomsActive(this);
        }
    }

    private void OnTriggerExit(Collider other)
    {
        CameraController controller = other.gameObject.GetComponent<CameraController>();

        if (controller != null)
        {
            controller.ReturnCameraToHome();
            controller.RemoveFromRoomsActive(this);
        }
    }

    private IEnumerator FadeOutMaterial(float fadeSpeed, GameObject wallObj)
    {
        Renderer rend = wallObj.GetComponent<Renderer>();
        Color matColor = rend.material.color;
        if (matColor.a > 1f)
            matColor = new Color(matColor.r, matColor.g, matColor.b, 1f);

        while (rend.material.color.a > 0f)
        {
            matColor.a -= Time.deltaTime / fadeSpeed;
            rend.material.color = matColor;
            yield return null;
        }
        rend.material.color = new Color(matColor.r, matColor.g, matColor.b, 0f);
    }

    private IEnumerator FadeInMaterial(float fadeSpeed, GameObject wallObj)
    {
        Renderer rend = wallObj.GetComponent<Renderer>();
        Color matColor = rend.material.color;

        while (rend.material.color.a < 1f)
        {
            matColor.a += Time.deltaTime / fadeSpeed;
            rend.material.color = matColor;
            yield return null;
        }
        rend.material.color = new Color(matColor.r, matColor.g, matColor.b, 1f);
    }
}