namespace Mapbox.Editor
{
	using System.Collections.Generic;
	using System.Linq;
	using UnityEngine;
	using UnityEditor;
	using Mapbox.Unity.Map;
	using UnityEditor.IMGUI.Controls;
	using Mapbox.Unity.MeshGeneration.Modifiers;
	using Mapbox.VectorTile.ExtensionMethods;
	using Mapbox.Unity.MeshGeneration.Filters;
	using Mapbox.Platform.TilesetTileJSON;
	using Mapbox.Editor;
	using System;

	public class FeaturesSubLayerPropertiesDrawer
	{
		static float _lineHeight = EditorGUIUtility.singleLineHeight;
		GUIContent[] _sourceTypeContent;
		bool _isGUIContentSet = false;
		bool _isInitialized = false;
		private TileJsonData tileJSONData;
		private static TileJSONResponse tileJSONResponse;
		static TileJsonData tileJsonData = new TileJsonData();
		int _layerIndex = 0;
		GUIContent[] _layerTypeContent;
		private static VectorSubLayerProperties subLayerProperties;
		private TreeModel<FeatureTreeElement> treeModel;

		private static string[] names;
		[SerializeField]
		TreeViewState m_TreeViewState;

		[SerializeField]
		MultiColumnHeaderState m_MultiColumnHeaderState;

		public bool isLayerAdded = false;
		bool m_Initialized = false;
		string objectId = "";
		private string TilesetId
		{
			get
			{
				return EditorPrefs.GetString(objectId + "VectorSubLayerProperties_tilesetId");
			}
			set
			{
				EditorPrefs.SetString(objectId + "VectorSubLayerProperties_tilesetId", value);
			}
		}

		bool ShowPosition
		{
			get
			{
				return EditorPrefs.GetBool(objectId + "VectorSubLayerProperties_showPosition");
			}
			set
			{
				EditorPrefs.SetBool(objectId + "VectorSubLayerProperties_showPosition", value);
			}
		}

		int SelectionIndex
		{
			get
			{
				return EditorPrefs.GetInt(objectId + "VectorSubLayerProperties_selectionIndex");
			}
			set
			{
				EditorPrefs.SetInt(objectId + "VectorSubLayerProperties_selectionIndex", value);
			}
		}

		ModelingSectionDrawer _modelingSectionDrawer = new ModelingSectionDrawer();
		BehaviorModifiersSectionDrawer _behaviorModifierSectionDrawer = new BehaviorModifiersSectionDrawer();

		private static TileStats _streetsV7TileStats;
		private static string[] subTypeValues;
		FeatureSubLayerTreeView layerTreeView;
		IList<int> selectedLayers = new List<int>();
		public void DrawUI(SerializedProperty property)
		{

			objectId = property.serializedObject.targetObject.GetInstanceID().ToString();
			var serializedMapObject = property.serializedObject;
			AbstractMap mapObject = (AbstractMap)serializedMapObject.targetObject;
			tileJSONData = mapObject.VectorData.GetTileJsonData();

			var sourceTypeProperty = property.FindPropertyRelative("_sourceType");
			var sourceTypeValue = (VectorSourceType)sourceTypeProperty.enumValueIndex;

			var displayNames = sourceTypeProperty.enumDisplayNames;
			var names = sourceTypeProperty.enumNames;
			int count = sourceTypeProperty.enumDisplayNames.Length;
			if (!_isGUIContentSet)
			{
				_sourceTypeContent = new GUIContent[count];

				var index = 0;
				foreach (var name in names)
				{
					_sourceTypeContent[index] = new GUIContent
					{
						text = displayNames[index],
						tooltip = ((VectorSourceType)Enum.Parse(typeof(VectorSourceType), name)).Description(),
					};
					index++;
				}

				//				for (int index0 = 0; index0 < count; index0++)
				//				{
				//					_sourceTypeContent[index0] = new GUIContent
				//					{
				//						text = displayNames[index0],
				//						tooltip = ((VectorSourceType)index0).Description(),
				//					};
				//				}
				_isGUIContentSet = true;
			}

			//sourceTypeValue = (VectorSourceType)sourceTypeProperty.enumValueIndex;
			sourceTypeValue = ((VectorSourceType)Enum.Parse(typeof(VectorSourceType), names[sourceTypeProperty.enumValueIndex]));
			var sourceOptionsProperty = property.FindPropertyRelative("sourceOptions");
			var layerSourceProperty = sourceOptionsProperty.FindPropertyRelative("layerSource");
			var layerSourceId = layerSourceProperty.FindPropertyRelative("Id");
			var isActiveProperty = sourceOptionsProperty.FindPropertyRelative("isActive");
			switch (sourceTypeValue)
			{
				case VectorSourceType.MapboxStreets:
				case VectorSourceType.MapboxStreetsV8:
				case VectorSourceType.MapboxStreetsWithBuildingIds:
				case VectorSourceType.MapboxStreetsV8WithBuildingIds:
					var sourcePropertyValue = MapboxDefaultVector.GetParameters(sourceTypeValue);
					layerSourceId.stringValue = sourcePropertyValue.Id;
					GUI.enabled = false;
					if (_isInitialized)
					{
						LoadEditorTileJSON(property, sourceTypeValue, layerSourceId.stringValue);
					}
					else
					{
						_isInitialized = true;
					}
					if (tileJSONData.PropertyDisplayNames.Count == 0 && tileJSONData.tileJSONLoaded)
					{
						EditorGUILayout.HelpBox("Invalid Tileset Id / There might be a problem with the internet connection.", MessageType.Error);
					}
					GUI.enabled = true;
					isActiveProperty.boolValue = true;
					break;
				case VectorSourceType.Custom:
					if (_isInitialized)
					{
						string test = layerSourceId.stringValue;
						LoadEditorTileJSON(property, sourceTypeValue, layerSourceId.stringValue);
					}
					else
					{
						_isInitialized = true;
					}
					if (tileJSONData.PropertyDisplayNames.Count == 0 && tileJSONData.tileJSONLoaded)
					{
						EditorGUILayout.HelpBox("Invalid Tileset Id / There might be a problem with the internet connection.", MessageType.Error);
					}
					isActiveProperty.boolValue = true;
					break;
				case VectorSourceType.None:
					isActiveProperty.boolValue = false;
					break;
				default:
					isActiveProperty.boolValue = false;
					break;
			}

			if (sourceTypeValue != VectorSourceType.None)
			{
				EditorGUILayout.LabelField(new GUIContent
				{
					text = "Map Features",
					tooltip = "Visualizers for vector features contained in a layer. "
				});

				var subLayerArray = property.FindPropertyRelative("vectorSubLayers");

				var layersRect = EditorGUILayout.GetControlRect(GUILayout.MinHeight(Mathf.Max(subLayerArray.arraySize + 1, 1) * _lineHeight + MultiColumnHeader.DefaultGUI.defaultHeight),
																GUILayout.MaxHeight((subLayerArray.arraySize + 1) * _lineHeight + MultiColumnHeader.DefaultGUI.defaultHeight));

				if (!m_Initialized)
				{
					bool firstInit = m_MultiColumnHeaderState == null;
					var headerState = FeatureSubLayerTreeView.CreateDefaultMultiColumnHeaderState();
					if (MultiColumnHeaderState.CanOverwriteSerializedFields(m_MultiColumnHeaderState, headerState))
					{
						MultiColumnHeaderState.OverwriteSerializedFields(m_MultiColumnHeaderState, headerState);
					}
					m_MultiColumnHeaderState = headerState;

					var multiColumnHeader = new FeatureSectionMultiColumnHeader(headerState);

					if (firstInit)
					{
						multiColumnHeader.ResizeToFit();
					}

					treeModel = new TreeModel<FeatureTreeElement>(GetData(subLayerArray));
					if (m_TreeViewState == null)
					{
						m_TreeViewState = new TreeViewState();
					}

					if (layerTreeView == null)
					{
						layerTreeView = new FeatureSubLayerTreeView(m_TreeViewState, multiColumnHeader, treeModel);
					}
					layerTreeView.multiColumnHeader = multiColumnHeader;
					m_Initialized = true;
				}
				layerTreeView.Layers = subLayerArray;
				layerTreeView.Reload();
				layerTreeView.OnGUI(layersRect);

				if (layerTreeView.hasChanged)
				{
					EditorHelper.CheckForModifiedProperty(property);
					layerTreeView.hasChanged = false;
				}

				selectedLayers = layerTreeView.GetSelection();

				//if there are selected elements, set the selection index at the first element.
				//if not, use the Selection index to persist the selection at the right index.
				if (selectedLayers.Count > 0)
				{
					//ensure that selectedLayers[0] isn't out of bounds
					if (selectedLayers[0] - FeatureSubLayerTreeView.uniqueIdFeature > subLayerArray.arraySize - 1)
					{
						selectedLayers[0] = subLayerArray.arraySize - 1 + FeatureSubLayerTreeView.uniqueIdFeature;
					}

					SelectionIndex = selectedLayers[0];
				}
				else
				{
					if (SelectionIndex > 0 && (SelectionIndex - FeatureSubLayerTreeView.uniqueIdFeature <= subLayerArray.arraySize - 1))
					{
						selectedLayers = new int[1] { SelectionIndex };
						layerTreeView.SetSelection(selectedLayers);
					}
				}

				GUILayout.Space(EditorGUIUtility.singleLineHeight);

				EditorGUILayout.BeginHorizontal();
				GenericMenu menu = new GenericMenu();
				foreach (var name in Enum.GetNames(typeof(PresetFeatureType)))
				{
					menu.AddItem(new GUIContent() { text = name }, false, FetchPresetProperties, name);
				}
				GUILayout.Space(0); // do not remove this line; it is needed for the next line to work
				Rect rect = GUILayoutUtility.GetLastRect();
				rect.y += 2 * _lineHeight / 3;

				if (EditorGUILayout.DropdownButton(new GUIContent { text = "Add Feature" }, FocusType.Passive, (GUIStyle)"minibuttonleft"))
				{
					menu.DropDown(rect);
				}

				//Assign subLayerProperties after fetching it from the presets class. This happens everytime an element is added
				if (subLayerProperties != null)
				{
					subLayerArray.arraySize++;
					var subLayer = subLayerArray.GetArrayElementAtIndex(subLayerArray.arraySize - 1);
					SetSubLayerProps(subLayer);

					//Refreshing the tree
					layerTreeView.Layers = subLayerArray;
					layerTreeView.AddElementToTree(subLayer);
					layerTreeView.Reload();

					selectedLayers = new int[1] { subLayerArray.arraySize - 1 + FeatureSubLayerTreeView.uniqueIdFeature };
					layerTreeView.SetSelection(selectedLayers);
					subLayerProperties = null; // setting this to null so that the if block is not called again

					if (EditorHelper.DidModifyProperty(property))
					{
						isLayerAdded = true;
					}
				}

				if (GUILayout.Button(new GUIContent("Remove Selected"), (GUIStyle)"minibuttonright"))
				{
					foreach (var index in selectedLayers.OrderByDescending(i => i))
					{
						if (layerTreeView != null)
						{
							var subLayer = subLayerArray.GetArrayElementAtIndex(index - FeatureSubLayerTreeView.uniqueIdFeature);

							VectorLayerProperties vectorLayerProperties = (VectorLayerProperties)EditorHelper.GetTargetObjectOfProperty(property);
							VectorSubLayerProperties vectorSubLayerProperties = (VectorSubLayerProperties)EditorHelper.GetTargetObjectOfProperty(subLayer);

							vectorLayerProperties.OnSubLayerPropertyRemoved(new VectorLayerUpdateArgs { property = vectorSubLayerProperties });

							layerTreeView.RemoveItemFromTree(index);
							subLayerArray.DeleteArrayElementAtIndex(index - FeatureSubLayerTreeView.uniqueIdFeature);
							layerTreeView.treeModel.SetData(GetData(subLayerArray));
						}
					}

					selectedLayers = new int[0];
					layerTreeView.SetSelection(selectedLayers);
				}

				EditorGUILayout.EndHorizontal();

				GUILayout.Space(EditorGUIUtility.singleLineHeight);

				if (selectedLayers.Count == 1 && subLayerArray.arraySize != 0 && selectedLayers[0] - FeatureSubLayerTreeView.uniqueIdFeature >= 0)
				{
					//ensure that selectedLayers[0] isn't out of bounds
					if (selectedLayers[0] - FeatureSubLayerTreeView.uniqueIdFeature > subLayerArray.arraySize - 1)
					{
						selectedLayers[0] = subLayerArray.arraySize - 1 + FeatureSubLayerTreeView.uniqueIdFeature;
					}

					SelectionIndex = selectedLayers[0];

					var layerProperty = subLayerArray.GetArrayElementAtIndex(SelectionIndex - FeatureSubLayerTreeView.uniqueIdFeature);

					layerProperty.isExpanded = true;
					var subLayerCoreOptions = layerProperty.FindPropertyRelative("coreOptions");
					bool isLayerActive = subLayerCoreOptions.FindPropertyRelative("isActive").boolValue;
					if (!isLayerActive)
					{
						GUI.enabled = false;
					}

					DrawLayerVisualizerProperties(sourceTypeValue, layerProperty, property);

					if (!isLayerActive)
					{
						GUI.enabled = true;
					}
				}
				else
				{
					GUILayout.Label("Select a visualizer to see properties");
				}
			}
		}

		IList<FeatureTreeElement> GetData(SerializedProperty subLayerArray)
		{
			List<FeatureTreeElement> elements = new List<FeatureTreeElement>();
			string name = string.Empty;
			string type = string.Empty;
			int id = 0;
			var root = new FeatureTreeElement("Root", -1, 0);
			elements.Add(root);
			for (int i = 0; i < subLayerArray.arraySize; i++)
			{
				var subLayer = subLayerArray.GetArrayElementAtIndex(i);
				name = subLayer.FindPropertyRelative("coreOptions.sublayerName").stringValue;
				id = i + FeatureSubLayerTreeView.uniqueIdFeature;
				type = ((PresetFeatureType)subLayer.FindPropertyRelative("presetFeatureType").enumValueIndex).ToString();
				FeatureTreeElement element = new FeatureTreeElement(name, 0, id);
				element.Name = name;
				element.name = name;
				element.Type = type;
				elements.Add(element);
			}
			return elements;
		}

		/// <summary>
		/// Fetches the preset properties using the supplied <see cref="PresetFeatureType">PresetFeatureType</see>
		/// </summary>
		/// <param name="name">Name.</param>
		void FetchPresetProperties(object name)
		{
			PresetFeatureType featureType = ((PresetFeatureType)Enum.Parse(typeof(PresetFeatureType), name.ToString()));
			subLayerProperties = PresetSubLayerPropertiesFetcher.GetSubLayerProperties(featureType);
		}

		/// <summary>
		/// Sets the sub layer properties for the newly added layer
		/// </summary>
		/// <param name="subLayer">Sub layer.</param>
		void SetSubLayerProps(SerializedProperty subLayer)
		{
			subLayer.FindPropertyRelative("coreOptions.sublayerName").stringValue = subLayerProperties.coreOptions.sublayerName;
			subLayer.FindPropertyRelative("presetFeatureType").enumValueIndex = (int)subLayerProperties.presetFeatureType;
			// Set defaults here because SerializedProperty copies the previous element.
			var subLayerCoreOptions = subLayer.FindPropertyRelative("coreOptions");
			CoreVectorLayerProperties coreOptions = subLayerProperties.coreOptions;
			subLayerCoreOptions.FindPropertyRelative("isActive").boolValue = coreOptions.isActive;
			subLayerCoreOptions.FindPropertyRelative("layerName").stringValue = coreOptions.layerName;
			subLayerCoreOptions.FindPropertyRelative("geometryType").enumValueIndex = (int)coreOptions.geometryType;
			subLayerCoreOptions.FindPropertyRelative("snapToTerrain").boolValue = coreOptions.snapToTerrain;
			subLayerCoreOptions.FindPropertyRelative("combineMeshes").boolValue = coreOptions.combineMeshes;

			var subLayerlineGeometryOptions = subLayer.FindPropertyRelative("lineGeometryOptions");
			var lineGeometryOptions = subLayerProperties.lineGeometryOptions;
			subLayerlineGeometryOptions.FindPropertyRelative("Width").floatValue = lineGeometryOptions.Width;
			subLayerlineGeometryOptions.FindPropertyRelative("CapType").enumValueIndex = (int)lineGeometryOptions.CapType;
			subLayerlineGeometryOptions.FindPropertyRelative("JoinType").enumValueIndex = (int)lineGeometryOptions.JoinType;
			subLayerlineGeometryOptions.FindPropertyRelative("MiterLimit").floatValue = lineGeometryOptions.MiterLimit;
			subLayerlineGeometryOptions.FindPropertyRelative("RoundLimit").floatValue = lineGeometryOptions.RoundLimit;


			var subLayerExtrusionOptions = subLayer.FindPropertyRelative("extrusionOptions");
			var extrusionOptions = subLayerProperties.extrusionOptions;
			subLayerExtrusionOptions.FindPropertyRelative("extrusionType").enumValueIndex = (int)extrusionOptions.extrusionType;
			subLayerExtrusionOptions.FindPropertyRelative("extrusionGeometryType").enumValueIndex = (int)extrusionOptions.extrusionGeometryType;
			subLayerExtrusionOptions.FindPropertyRelative("propertyName").stringValue = extrusionOptions.propertyName;
			subLayerExtrusionOptions.FindPropertyRelative("extrusionScaleFactor").floatValue = extrusionOptions.extrusionScaleFactor;
			subLayerExtrusionOptions.FindPropertyRelative("maximumHeight").floatValue = extrusionOptions.maximumHeight;

			var subLayerFilterOptions = subLayer.FindPropertyRelative("filterOptions");
			var filterOptions = subLayerProperties.filterOptions;
			subLayerFilterOptions.FindPropertyRelative("filters").ClearArray();
			subLayerFilterOptions.FindPropertyRelative("combinerType").enumValueIndex = (int)filterOptions.combinerType;
			//Add any future filter related assignments here

			var subLayerGeometryMaterialOptions = subLayer.FindPropertyRelative("materialOptions");
			var materialOptions = subLayerProperties.materialOptions;
			subLayerGeometryMaterialOptions.FindPropertyRelative("style").enumValueIndex = (int)materialOptions.style;

			var mats = subLayerGeometryMaterialOptions.FindPropertyRelative("materials");
			mats.arraySize = 2;

			var topMatArray = mats.GetArrayElementAtIndex(0).FindPropertyRelative("Materials");
			var sideMatArray = mats.GetArrayElementAtIndex(1).FindPropertyRelative("Materials");

			if (topMatArray.arraySize == 0)
			{
				topMatArray.arraySize = 1;
			}
			if (sideMatArray.arraySize == 0)
			{
				sideMatArray.arraySize = 1;
			}

			var topMat = topMatArray.GetArrayElementAtIndex(0);
			var sideMat = sideMatArray.GetArrayElementAtIndex(0);

			var atlas = subLayerGeometryMaterialOptions.FindPropertyRelative("atlasInfo");
			var palette = subLayerGeometryMaterialOptions.FindPropertyRelative("colorPalette");
			var lightStyleOpacity = subLayerGeometryMaterialOptions.FindPropertyRelative("lightStyleOpacity");
			var darkStyleOpacity = subLayerGeometryMaterialOptions.FindPropertyRelative("darkStyleOpacity");
			var colorStyleColor = subLayerGeometryMaterialOptions.FindPropertyRelative("colorStyleColor");
			var customStyleOptions = subLayerGeometryMaterialOptions.FindPropertyRelative("customStyleOptions");

			topMat.objectReferenceValue = materialOptions.materials[0].Materials[0];
			sideMat.objectReferenceValue = materialOptions.materials[1].Materials[0];
			atlas.objectReferenceValue = materialOptions.atlasInfo;
			palette.objectReferenceValue = materialOptions.colorPalette;
			lightStyleOpacity.floatValue = materialOptions.lightStyleOpacity;
			darkStyleOpacity.floatValue = materialOptions.darkStyleOpacity;
			colorStyleColor.colorValue = materialOptions.colorStyleColor;
			//set custom style options.
			var customMats = customStyleOptions.FindPropertyRelative("materials");
			customMats.arraySize = 2;

			var customTopMatArray = customMats.GetArrayElementAtIndex(0).FindPropertyRelative("Materials");
			var customSideMatArray = customMats.GetArrayElementAtIndex(1).FindPropertyRelative("Materials");

			if (customTopMatArray.arraySize == 0)
			{
				customTopMatArray.arraySize = 1;
			}
			if (customSideMatArray.arraySize == 0)
			{
				customSideMatArray.arraySize = 1;
			}

			var customTopMat = customTopMatArray.GetArrayElementAtIndex(0);
			var customSideMat = customSideMatArray.GetArrayElementAtIndex(0);


			customTopMat.objectReferenceValue = materialOptions.customStyleOptions.materials[0].Materials[0];
			customSideMat.objectReferenceValue = materialOptions.customStyleOptions.materials[1].Materials[0];
			customStyleOptions.FindPropertyRelative("atlasInfo").objectReferenceValue = materialOptions.customStyleOptions.atlasInfo;
			customStyleOptions.FindPropertyRelative("colorPalette").objectReferenceValue = materialOptions.customStyleOptions.colorPalette;

			subLayer.FindPropertyRelative("buildingsWithUniqueIds").boolValue = subLayerProperties.buildingsWithUniqueIds;
			subLayer.FindPropertyRelative("moveFeaturePositionTo").enumValueIndex = (int)subLayerProperties.moveFeaturePositionTo;
			subLayer.FindPropertyRelative("MeshModifiers").ClearArray();
			subLayer.FindPropertyRelative("GoModifiers").ClearArray();

			var subLayerColliderOptions = subLayer.FindPropertyRelative("colliderOptions");
			subLayerColliderOptions.FindPropertyRelative("colliderType").enumValueIndex = (int)subLayerProperties.colliderOptions.colliderType;
		}

		private void UpdateMe()
		{
			Debug.Log("Update!");
		}

		void DrawLayerVisualizerProperties(VectorSourceType sourceType, SerializedProperty layerProperty, SerializedProperty property)
		{
			var subLayerCoreOptions = layerProperty.FindPropertyRelative("coreOptions");

			var subLayerName = subLayerCoreOptions.FindPropertyRelative("sublayerName").stringValue;
			var visualizerLayer = subLayerCoreOptions.FindPropertyRelative("layerName").stringValue;
			var subLayerType = PresetSubLayerPropertiesFetcher.GetPresetTypeFromLayerName(visualizerLayer);

			GUILayout.Space(-_lineHeight);
			layerProperty.FindPropertyRelative("presetFeatureType").intValue = (int)subLayerType;

			GUILayout.Space(_lineHeight);
			//*********************** LAYER NAME BEGINS ***********************************//
			VectorPrimitiveType primitiveTypeProp = (VectorPrimitiveType)subLayerCoreOptions.FindPropertyRelative("geometryType").enumValueIndex;

			var serializedMapObject = property.serializedObject;
			AbstractMap mapObject = (AbstractMap)serializedMapObject.targetObject;
			tileJsonData = mapObject.VectorData.GetTileJsonData();

			var layerDisplayNames = tileJsonData.LayerDisplayNames;

			EditorGUI.BeginChangeCheck();
			DrawLayerName(subLayerCoreOptions, layerDisplayNames);
			if (EditorGUI.EndChangeCheck())
			{
				EditorHelper.CheckForModifiedProperty(subLayerCoreOptions);
			}
			//*********************** LAYER NAME ENDS ***********************************//

			EditorGUI.indentLevel++;

			//*********************** FILTERS SECTION BEGINS ***********************************//
			var filterOptions = layerProperty.FindPropertyRelative("filterOptions");
			filterOptions.FindPropertyRelative("_selectedLayerName").stringValue = subLayerCoreOptions.FindPropertyRelative("layerName").stringValue;
			GUILayout.Space(-_lineHeight);
			EditorGUILayout.PropertyField(filterOptions, new GUIContent("Filters"));
			//*********************** FILTERS SECTION ENDS ***********************************//



			//*********************** MODELING SECTION BEGINS ***********************************//
			_modelingSectionDrawer.DrawUI(subLayerCoreOptions, layerProperty, primitiveTypeProp);
			//*********************** MODELING SECTION ENDS ***********************************//


			//*********************** TEXTURING SECTION BEGINS ***********************************//
			if (primitiveTypeProp != VectorPrimitiveType.Point && primitiveTypeProp != VectorPrimitiveType.Custom)
			{
				GUILayout.Space(-_lineHeight);
				EditorGUILayout.PropertyField(layerProperty.FindPropertyRelative("materialOptions"));
			}
			//*********************** TEXTURING SECTION ENDS ***********************************//


			//*********************** GAMEPLAY SECTION BEGINS ***********************************//
			_behaviorModifierSectionDrawer.DrawUI(layerProperty, primitiveTypeProp, sourceType);
			//*********************** GAMEPLAY SECTION ENDS ***********************************//

			EditorGUI.indentLevel--;
		}

		private void LoadEditorTileJSON(SerializedProperty property, VectorSourceType sourceTypeValue, string sourceString)
		{
			if (sourceTypeValue != VectorSourceType.None && !string.IsNullOrEmpty(sourceString))
			{
				if (tileJSONResponse == null || string.IsNullOrEmpty(sourceString) || sourceString != TilesetId)
				{
					try
					{
						Unity.MapboxAccess.Instance.TileJSON.Get(sourceString, (response) =>
						{
							//if the code has reached this point it means that there is a valid access token
							tileJSONResponse = response;
							if (response == null || response.VectorLayers == null) //indicates bad tileresponse
							{
								tileJSONData.ClearData();
								return;
							}
							tileJSONData.ProcessTileJSONData(response);
						});
					}
					catch (System.Exception)
					{
						//no valid access token causes MapboxAccess to throw an error and hence setting this property
						tileJSONData.ClearData();
					}
				}
				else if (tileJSONData.LayerPropertyDescriptionDictionary.Count == 0)
				{
					tileJSONData.ProcessTileJSONData(tileJSONResponse);
				}
			}
			else
			{
				tileJSONData.ClearData();
			}
			TilesetId = sourceString;
		}

		public void DrawLayerName(SerializedProperty property, List<string> layerDisplayNames)
		{

			var layerNameLabel = new GUIContent
			{
				text = "Data Layer",
				tooltip = "The layer name from the Mapbox tileset that would be used for visualizing a feature"
			};

			//disable the selection if there is no layer
			if (layerDisplayNames.Count == 0)
			{
				EditorGUILayout.LabelField(layerNameLabel, new GUIContent("No layers found: Invalid TilesetId / No Internet."), (GUIStyle)"minipopUp");
				return;
			}

			//check the string value at the current _layerIndex to verify that the stored index matches the property string.
			var layerString = property.FindPropertyRelative("layerName").stringValue;
			if (layerDisplayNames.Contains(layerString))
			{
				//if the layer contains the current layerstring, set it's index to match
				_layerIndex = layerDisplayNames.FindIndex(s => s.Equals(layerString));

			}
			else
			{
				//if the selected layer isn't in the source, add a placeholder entry
				_layerIndex = 0;
				layerDisplayNames.Insert(0, layerString);
				if (!tileJsonData.LayerPropertyDescriptionDictionary.ContainsKey(layerString))
				{
					tileJsonData.LayerPropertyDescriptionDictionary.Add(layerString, new Dictionary<string, string>());
				}

			}

			//create the display name guicontent array with an additional entry for the currently selected item
			_layerTypeContent = new GUIContent[layerDisplayNames.Count];
			for (int extIdx = 0; extIdx < layerDisplayNames.Count; extIdx++)
			{
				_layerTypeContent[extIdx] = new GUIContent
				{
					text = layerDisplayNames[extIdx],
				};
			}

			//draw the layer selection popup
			_layerIndex = EditorGUILayout.Popup(layerNameLabel, _layerIndex, _layerTypeContent);
			var parsedString = layerDisplayNames.ToArray()[_layerIndex].Split(new string[] { tileJsonData.commonLayersKey }, System.StringSplitOptions.None)[0].Trim();
			property.FindPropertyRelative("layerName").stringValue = parsedString;
		}

		private string[] GetSubTypeValues(SerializedProperty layerProperty, string visualizerLayer, VectorSourceType sourceType)
		{
			string[] typesArray = null;
			string roadLayer = layerProperty.FindPropertyRelative("roadLayer").stringValue;
			string landuseLayer = layerProperty.FindPropertyRelative("landuseLayer").stringValue;

			if (visualizerLayer == roadLayer || visualizerLayer == landuseLayer)
			{
				_streetsV7TileStats = TileStatsFetcher.Instance.GetTileStats(sourceType);
				if (_streetsV7TileStats != null && _streetsV7TileStats.layers != null && _streetsV7TileStats.layers.Length != 0)
				{
					foreach (var layer in _streetsV7TileStats.layers)
					{
						if (layer.layer != visualizerLayer)
						{
							continue;
						}

						string presetPropertyName = "";
						if (layer.layer == roadLayer)
						{
							presetPropertyName = layerProperty.FindPropertyRelative("roadLayer_TypeProperty").stringValue;
						}
						else if (layer.layer == landuseLayer)
						{
							presetPropertyName = layerProperty.FindPropertyRelative("landuseLayer_TypeProperty").stringValue;
						}

						if (layer.attributes != null && layer.attributes.Length > 0)
						{
							foreach (var attributeItem in layer.attributes)
							{
								if (attributeItem.attribute == presetPropertyName)
								{
									typesArray = attributeItem.values;
								}
							}
						}
					}
				}
			}
			return typesArray;
		}
	}
}