using System;
using System.Collections.Generic;
using System.Globalization;
using CIG3.ExtensionMethods;
using CIGEnums;
using SUISS.Core;
using SUISS.Scheduling;
using SUISSEngine;
using UnityEngine;

public class CIGSceneryManager : MonoBehaviour
{
	private void OnGridDeserialized()
	{
		if (++this.initializationCounter == 2)
		{
			SingletonMonobehaviour<Scheduler>.Instance.ExecuteNextFrame(base.gameObject, delegate()
			{
				this.PlaceInitialScenery();
			});
		}
	}

	private void OnDeserialized()
	{
		if (++this.initializationCounter == 2)
		{
			SingletonMonobehaviour<Scheduler>.Instance.ExecuteNextFrame(base.gameObject, delegate()
			{
				this.PlaceInitialScenery();
			});
		}
	}

	private DateTime SceneryTimestamp
	{
		get
		{
			return this._sceneryTimestamp;
		}
		set
		{
			this._sceneryTimestamp = value;
			this.serializing.Serialize();
		}
	}

	private bool InitialSceneryPlaced
	{
		get
		{
			return this._initialSceneryPlaced;
		}
		set
		{
			this._initialSceneryPlaced = value;
			this.serializing.Serialize();
		}
	}

	private void OnSerialize(Dictionary<string, object> dict)
	{
		dict["SceneryTimestamp"] = this._sceneryTimestamp.ToString("yyyyMMddHHmmss");
		dict["InitialSceneryIsPlaced"] = this._initialSceneryPlaced;
	}

	private void OnDeserialize(Dictionary<string, object> dict)
	{
		if (dict.ContainsKey("SceneryTimestamp"))
		{
			CultureInfo invariantCulture = CultureInfo.InvariantCulture;
			this._sceneryTimestamp = DateTime.ParseExact((string)dict["SceneryTimestamp"], "yyyyMMddHHmmss", invariantCulture);
		}
		if (dict.ContainsKey("InitialSceneryIsPlaced"))
		{
			this._initialSceneryPlaced = (bool)dict["InitialSceneryIsPlaced"];
		}
	}

	protected void LoadSceneryPrefabs()
	{
		bool[] availableSurfaceTypes = this.grid.AvailableSurfaceTypes;
		bool flag = false;
		for (int i = 1; i < availableSurfaceTypes.Length; i++)
		{
			if (availableSurfaceTypes[i] && ((SurfaceType)i).IsLand())
			{
				flag = true;
				break;
			}
		}
		List<GameObject> additionalPrefabs = SingletonMonobehaviour<GameObjectManager>.Instance.AdditionalPrefabs;
		int count = SingletonMonobehaviour<GameObjectManager>.Instance.AdditionalPrefabs.Count;
		for (int j = 0; j < count; j++)
		{
			GameObject gameObject = additionalPrefabs[j];
			CIGScenery component = gameObject.GetComponent<CIGScenery>();
			if (component != null)
			{
				if (!component.island.IsValid() || component.island == this.cityIsland.island)
				{
					GridTile tile = component.tile;
					int requiredGridType = tile.requiredGridType;
					if ((requiredGridType == 10 && flag) || (requiredGridType < availableSurfaceTypes.Length && availableSurfaceTypes[requiredGridType]))
					{
						this.sceneryPrefabs.Add(gameObject);
					}
				}
			}
		}
	}

	private void PlaceInitialScenery()
	{
		if (this.InitialSceneryPlaced)
		{
			return;
		}
		this.LoadSceneryPrefabs();
		List<GridIndex> list = new List<GridIndex>(this.expansions.blockSizeU * this.expansions.blockSizeV);
		foreach (CIGExpansionDefinition cigexpansionDefinition in this.expansions.blockDefinitions)
		{
			list.Clear();
			int num = cigexpansionDefinition.sceneryItems;
			for (int j = 0; j < this.expansions.blockSizeV; j++)
			{
				for (int k = 0; k < this.expansions.blockSizeU; k++)
				{
					GridIndex gridIndex = new GridIndex(k + this.expansions.blockSizeU * cigexpansionDefinition.u, j + this.expansions.blockSizeV * cigexpansionDefinition.v);
					GridElement gridElement = this.grid[gridIndex];
					if (this.HavePrefabForType(gridElement.Type))
					{
						if (gridElement.Tile != null)
						{
							if (gridElement.Tile.GetComponent<CIGScenery>() != null)
							{
								num--;
							}
						}
						else
						{
							list.Add(gridIndex);
						}
					}
				}
			}
			list.Shuffle<GridIndex>();
			int num2 = 0;
			while (num2 < list.Count && num2 < cigexpansionDefinition.sceneryItems)
			{
				GridIndex index = list[num2];
				GridElement gridElement2 = this.grid[index];
				int type = gridElement2.Type;
				GameObject prefabForType = this.GetPrefabForType(type);
				GridTile component = prefabForType.GetComponent<GridTile>();
				bool mirrored = component.canMirror && UnityEngine.Random.value >= 0.5f;
				this.island.builder.BuildAt(prefabForType, index, mirrored, true);
				num2++;
			}
		}
		this._initialSceneryPlaced = true;
		this.SceneryTimestamp = DateTime.UtcNow;
	}

	private bool HavePrefabForType(int type)
	{
		return this.GetPrefabForType(type) != null;
	}

	private GameObject GetPrefabForType(int type)
	{
		if (!this.availablePrefabs.ContainsKey(type))
		{
			List<GameObject> list = new List<GameObject>();
			foreach (GameObject gameObject in this.sceneryPrefabs)
			{
				CIGScenery component = gameObject.GetComponent<CIGScenery>();
				GridTile tile = component.tile;
				bool flag = false;
				if (this.exclusiveElementType != (SurfaceType)type && tile.requiredGridType == 10)
				{
					if (((SurfaceType)type).IsLand())
					{
						flag = true;
					}
				}
				else if (tile.requiredGridType == type)
				{
					flag = true;
				}
				if (flag)
				{
					if (component.multiple)
					{
						list = new List<GameObject>
						{
							gameObject
						};
						break;
					}
					list.Add(gameObject);
				}
			}
			this.availablePrefabs[type] = list;
		}
		int count = this.availablePrefabs[type].Count;
		if (count == 0)
		{
			return null;
		}
		return this.availablePrefabs[type][UnityEngine.Random.Range(0, count)];
	}

	[SelfReference]
	public IsometricIsland island;

	[SelfReference]
	public CityIsland cityIsland;

	[ChildReference]
	public IsometricGrid grid;

	[SelfReference]
	public Serializing serializing;

	[SelfReference]
	public CIGExpansions expansions;

	public SurfaceType exclusiveElementType = (SurfaceType)(-1);

	public const string SceneryTimestampKey = "SceneryTimestamp";

	public const string InitialSceneryPlacedKey = "InitialSceneryIsPlaced";

	protected List<GameObject> sceneryPrefabs = new List<GameObject>();

	protected int initializationCounter;

	private Dictionary<int, List<GameObject>> availablePrefabs = new Dictionary<int, List<GameObject>>();

	private DateTime _sceneryTimestamp = DateTime.MinValue;

	private bool _initialSceneryPlaced;
}