using UnityEngine;
using UnityEditor;

[CanEditMultipleObjects, CustomEditor(typeof(MegaWarp))]
public class MegaWarpEditor : Editor
{
	public Texture			image;
	public bool				showhelp = false;
	public bool				showmodparams = true;
	public virtual Texture	LoadImage() { return null; }
	public virtual string	GetHelpString() { return "Warp Modifer by Chris West"; }
	public virtual bool		Inspector() { return true; }
	public virtual bool		DisplayCommon() { return true; }
	private MegaWarp		src;
	private MegaUndo		undoManager;

	static public void CreateWarp(string type, System.Type classtype)
	{
		Vector3 pos = Vector3.zero;

		if ( UnityEditor.SceneView.lastActiveSceneView != null )
			pos = UnityEditor.SceneView.lastActiveSceneView.pivot;

		GameObject go = new GameObject(type + " Warp");

		go.AddComponent(classtype);

		go.transform.position = pos;
		Selection.activeObject = go;
	}

#if UNITY_5_1 || UNITY_5_2 || UNITY_5_3 || UNITY_5_4 || UNITY_5_5 || UNITY_5_6 || UNITY_2017 || UNITY_2018 || UNITY_2019 || UNITY_2020
	[DrawGizmo(GizmoType.NotInSelectionHierarchy | GizmoType.Pickable | GizmoType.InSelectionHierarchy)]
#else
	[DrawGizmo(GizmoType.NotSelected | GizmoType.Pickable | GizmoType.SelectedOrChild)]
#endif
	static void RenderGizmo(MegaWarp warp, GizmoType gizmoType)
	{
		if ( MegaModifiers.GlobalDisplay && warp.DisplayGizmo )
		{
			Color col = Color.white;

#if UNITY_5_1 || UNITY_5_2 || UNITY_5_3 || UNITY_5_4 || UNITY_5_5 || UNITY_5_6 || UNITY_2017 || UNITY_2018 || UNITY_2019 || UNITY_2020
			if ( (gizmoType & GizmoType.NotInSelectionHierarchy) != 0 )
#else
			if ( (gizmoType & GizmoType.NotSelected) != 0 )
#endif
			{
				col.a = 0.5f;
			}
			else
			{
				if ( (gizmoType & GizmoType.Active) != 0 )
				{
					if ( warp.Enabled )
						col.a = 1.0f;
					else
						col.a = 0.75f;
				}
				else
				{
					if ( warp.Enabled )
						col.a = 0.5f;
					else
						col.a = 0.25f;
				}
			}
			warp.DrawGizmo(col);
			Gizmos.DrawIcon(warp.transform.position, warp.GetIcon(), false);
		}
	}

	private void OnEnable()
	{
		src = target as MegaWarp;
		undoManager = new MegaUndo(src, src.WarpName() + " change");
	}

	public void CommonModParamsBasic(MegaWarp mod)
	{
		mod.Enabled = EditorGUILayout.Toggle("Enabled", mod.Enabled);
		mod.DisplayGizmo = EditorGUILayout.Toggle("Display Gizmo", mod.DisplayGizmo);

		EditorGUILayout.BeginHorizontal();
		EditorGUILayout.LabelField("Gizmo Col");
		mod.GizCol1 = EditorGUILayout.ColorField(mod.GizCol1);
		mod.GizCol2 = EditorGUILayout.ColorField(mod.GizCol2);
		EditorGUILayout.EndHorizontal();

		//mod.steps = EditorGUILayout.IntField("Gizmo Detail", mod.steps);
		//if ( mod.steps < 1 )
		//	mod.steps = 1;
	}

	public void CommonModParams(MegaWarp mod)
	{
		showmodparams = EditorGUILayout.Foldout(showmodparams, "Warp Common Params");

		if ( showmodparams )
		{
			EditorGUILayout.BeginVertical("Box");
			CommonModParamsBasic(mod);
			mod.Width = EditorGUILayout.FloatField("Width", mod.Width);
			mod.Height = EditorGUILayout.FloatField("Height", mod.Height);
			mod.Length = EditorGUILayout.FloatField("Length", mod.Length);
			mod.Decay = EditorGUILayout.FloatField("Decay", mod.Decay);
			EditorGUILayout.EndVertical();
		}
	}

	public virtual void DrawGUI()
	{
		MegaWarp mod = (MegaWarp)target;

		if ( DisplayCommon() )
			CommonModParams(mod);

		if ( GUI.changed )
			EditorUtility.SetDirty(target);

		if ( Inspector() )
			DrawDefaultInspector();
	}

	public virtual void DrawSceneGUI()
	{
		MegaWarp mod = (MegaWarp)target;

		if ( mod.Enabled && mod.DisplayGizmo && showmodparams )
		{
		}
	}

	public override void OnInspectorGUI()
	{
		undoManager.CheckUndo();
		DrawGUI();

		if ( GUI.changed )
			EditorUtility.SetDirty(target);
		undoManager.CheckDirty();
	}

	public void OnSceneGUI()
	{
		DrawSceneGUI();
	}
}