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

namespace NGS.MeshFusionPro;

public class StaticMeshFusionSource : MeshFusionSource
{
	[SerializeField]
	[HideInInspector]
	private MeshRenderer _renderer;

	[SerializeField]
	[HideInInspector]
	private MeshFilter _filter;

	[SerializeField]
	[HideInInspector]
	private Mesh _mesh;

	private CombineSource[] _sources;

	private CombinedObjectPart[] _parts;

	public override bool TryGetBounds(ref Bounds bounds)
	{
		if (_renderer != null)
		{
			bounds = _renderer.bounds;
			return true;
		}
		return false;
	}

	protected override void OnSourceCombinedInternal(ICombinedObject root, ICombinedObjectPart part)
	{
		for (int i = 0; i < _parts.Length; i++)
		{
			if (_parts[i] == null)
			{
				_parts[i] = (CombinedObjectPart)part;
				return;
			}
		}
		throw new Exception("Unexpected Behaviour");
	}

	protected override bool CheckCompatibilityAndGetComponents(out string incompatibilityReason)
	{
		incompatibilityReason = "";
		return CanCreateCombineSource(base.gameObject, ref incompatibilityReason, ref _renderer, ref _filter, ref _mesh);
	}

	protected override void CreateSources()
	{
		if (_sources == null)
		{
			_sources = new CombineSource[_mesh.subMeshCount];
		}
		if (_parts == null)
		{
			_parts = new CombinedObjectPart[_mesh.subMeshCount];
		}
		for (int i = 0; i < _sources.Length; i++)
		{
			CombineSource combineSource = new CombineSource(_mesh, _renderer, i);
			_sources[i] = combineSource;
		}
	}

	protected override IEnumerable<ICombineSource> GetCombineSources()
	{
		if (_sources == null)
		{
			yield break;
		}
		for (int i = 0; i < _sources.Length; i++)
		{
			CombineSource combineSource = _sources[i];
			if (combineSource == null)
			{
				break;
			}
			yield return combineSource;
		}
	}

	protected override IEnumerable<ICombinedObjectPart> GetCombinedParts()
	{
		if (_parts == null)
		{
			yield break;
		}
		for (int i = 0; i < _parts.Length; i++)
		{
			CombinedObjectPart combinedObjectPart = _parts[i];
			if (combinedObjectPart == null)
			{
				break;
			}
			yield return combinedObjectPart;
		}
	}

	protected override void ClearSources()
	{
		if (_sources != null)
		{
			for (int i = 0; i < _sources.Length; i++)
			{
				_sources[i] = null;
			}
		}
	}

	protected override void ClearParts()
	{
		if (_parts != null)
		{
			for (int i = 0; i < _parts.Length; i++)
			{
				_parts[i] = null;
			}
		}
	}

	protected override void ToggleComponents(bool enabled)
	{
		_renderer.enabled = enabled;
	}
}