/*
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 * All rights reserved.
 *
 * Licensed under the Oculus SDK License Agreement (the "License");
 * you may not use the Oculus SDK except in compliance with the License,
 * which is provided at the time of installation or download, or which
 * otherwise accompanies this software in either electronic or hard copy form.
 *
 * You may obtain a copy of the License at
 *
 * https://developer.oculus.com/licenses/oculussdk/
 *
 * Unless required by applicable law or agreed to in writing, the Oculus SDK
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

using System;
using UnityEngine;

namespace Meta.XR.BuildingBlocks
{
    public class PassthroughProjectionSurfaceBuildingBlock : MonoBehaviour
    {
        public MeshFilter projectionObject;

        // Start is called before the first frame update
        private void Start()
        {
            var ptLayers = FindObjectsOfType<OVRPassthroughLayer>();
            var foundLayer = false;

            foreach (var ptLayer in ptLayers)
            {
                if (!ptLayer.GetComponent<BuildingBlock>())
                {
                    continue;
                }

                foundLayer = true;
                ptLayer.AddSurfaceGeometry(projectionObject.gameObject, true);
            }

            if (foundLayer)
            {
                // The MeshRenderer component renders the quad as a blue outline
                // we only use this when Passthrough isn't visible
                var quadOutline = projectionObject.GetComponent<MeshRenderer>();
                quadOutline.enabled = false;
            }
            else
            {
                throw new InvalidOperationException("A BB with the passthrough overlay layer was not found");
            }
        }
    }
}