using UnityEngine;

namespace Moonlit.IceFishing
{
	[RequireComponent(typeof(Camera))]
	public class MaskCamera : MonoBehaviour
	{
		[SerializeField]
		public Camera _MainCamera;

		[SerializeField]
		private Shader _Shader;

		[SerializeField]
		private string _MaskLayer = "Mask";

		private Camera _Camera;

		private RenderTexture _MaskTexture;

		private void Awake()
		{
			if (_MainCamera == null)
			{
				Debug.LogError("_MainCamera not set");
				return;
			}
			if (_Shader == null)
			{
				Debug.LogError("_Shader not set");
				return;
			}
			_MaskTexture = new RenderTexture(_MainCamera.pixelWidth, _MainCamera.pixelHeight, 0, GetSupportedFormat());
			_Camera = GetComponent<Camera>();
			_Camera.depth = _MainCamera.depth - 1f;
			_Camera.fieldOfView = _MainCamera.fieldOfView;
			_Camera.aspect = _MainCamera.aspect;
			_Camera.nearClipPlane = _MainCamera.nearClipPlane;
			_Camera.farClipPlane = _MainCamera.farClipPlane;
			_Camera.clearFlags = CameraClearFlags.Color;
			_Camera.backgroundColor = Color.white;
			_Camera.cullingMask = LayerMask.GetMask(_MaskLayer);
			_Camera.targetTexture = _MaskTexture;
			_Camera.SetReplacementShader(_Shader, string.Empty);
			Shader.SetGlobalTexture("_Mask", _MaskTexture);
		}

		public void ChangeCamera(Camera newCamera)
		{
			_Camera.depth = newCamera.depth - 1f;
			_Camera.fieldOfView = newCamera.fieldOfView;
			_Camera.aspect = newCamera.aspect;
			_Camera.nearClipPlane = newCamera.nearClipPlane;
			_Camera.farClipPlane = newCamera.farClipPlane;
		}

		private void Update()
		{
			_Camera.fieldOfView = _MainCamera.fieldOfView;
		}

		private RenderTextureFormat GetSupportedFormat()
		{
			return RenderTextureFormat.Default;
		}
	}
}