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

public class Model3dController : MonoBehaviour {
    // Start is called before the first frame update

    public Model3dConfig config = null;
    public NavigationManager navigationManager = null;
    public RectTransform reference3dPanel = null;
    protected GameObject model3d;

    virtual protected void Start() {
        if (!config) {
            Debug.LogError("Model3dController -> Start() : configuration is null");
            return;
        }

        if (!config.model3d) {
            Debug.LogError("Model3dController -> Start() : 3d model is null");
            return;
        }

        model3d = Instantiate<GameObject>(config.model3d);
        ConfigureNavigationManager(model3d);
        ConfigureViewport(navigationManager._camera.GetComponent<Camera>());
    }

    protected void ConfigureNavigationManager(GameObject focus) {
        if (!navigationManager) {
            GameObject navigationManagerGO = Instantiate<GameObject>(Resources.Load<GameObject>("Prefabs/Model3dExplorerNavigationManager"));
            navigationManager = navigationManagerGO.GetComponent<NavigationManager>();
        }
        else {
            if (navigationManager.gameObject.activeSelf)
                Debug.LogError("Model3dController -> ConfigureNavigationManager(...): the GameObject '" + navigationManager.name + "' should be disabled");
        }
        if(navigationManager._camera == null)
            navigationManager._camera = Camera.main.gameObject;
        if(navigationManager.focus == null)
            navigationManager.focus = focus;
        navigationManager.gameObject.SetActive(true);
    }

    protected void ConfigureViewport(Camera camera) {
        if (!reference3dPanel) {
            Debug.LogError("Model3dController -> ConfigureViewport() : Reference 3d Panel is null");
            return;
        }
        Rect viewportRect = exprivia.ui.Utils.CameraViewportFromPanel(reference3dPanel);
        Rect r = viewportRect;
        camera.rect = r;
    }

    virtual protected void OnDestroy() {
        Destroy(navigationManager.gameObject);
        Destroy(model3d);
    }
}