using UnityEngine;
using System.Collections;

#if UNITY_EDITOR
using UnityEditor;

[CanEditMultipleObjects]
[CustomEditor (typeof(WaypointCircuit))]
public class WaypointCircuitEditor : Editor
{
	SerializedProperty smoothRoute;
	SerializedProperty editorVisualisationSubsteps;
	SerializedProperty showGizmo;
	SerializedProperty gizmoLabelColor;
	SerializedProperty gizmoRadius;
	SerializedProperty useHandleForVertex;

	SerializedProperty showVertexHandles;

	SerializedProperty handleRadius;
	SerializedProperty handleGizmoColor;
	SerializedProperty waypointList;

	WaypointCircuit manager;
	GUIStyle style = new GUIStyle ();

	GUIStyle buttonStyle = new GUIStyle ();

	Transform currentWaypoint;
	Quaternion currentWaypointRotation;
	Vector3 oldPoint;
	Vector3 newPoint;

	void OnEnable ()
	{
		smoothRoute = serializedObject.FindProperty ("smoothRoute");
		editorVisualisationSubsteps = serializedObject.FindProperty ("editorVisualisationSubsteps");
		showGizmo = serializedObject.FindProperty ("showGizmo");
		gizmoLabelColor = serializedObject.FindProperty ("gizmoLabelColor");
		gizmoRadius = serializedObject.FindProperty ("gizmoRadius");
		useHandleForVertex = serializedObject.FindProperty ("useHandleForVertex");
		handleRadius = serializedObject.FindProperty ("handleRadius");
		handleGizmoColor = serializedObject.FindProperty ("handleGizmoColor");
		waypointList = serializedObject.FindProperty ("waypointList");

		showVertexHandles = serializedObject.FindProperty ("showVertexHandles");

		manager = (WaypointCircuit)target;
	}

	void OnSceneGUI ()
	{   
		if (manager.showGizmo) {
			style.normal.textColor = manager.gizmoLabelColor;
			style.alignment = TextAnchor.MiddleCenter;

			for (int i = 0; i < manager.waypointList.Count; i++) {
				if (manager.waypointList [i] != null) {

					currentWaypoint = manager.waypointList [i];

					Handles.Label (currentWaypoint.position, currentWaypoint.name, style);

					if (manager.useHandleForVertex) {
						Handles.color = manager.handleGizmoColor;
						EditorGUI.BeginChangeCheck ();

						oldPoint = currentWaypoint.position;
						var fmh_69_52_638979118401547809 = Quaternion.identity; newPoint = Handles.FreeMoveHandle (oldPoint, manager.handleRadius, new Vector3 (.25f, .25f, .25f), Handles.CircleHandleCap);

						if (EditorGUI.EndChangeCheck ()) {
							Undo.RecordObject (currentWaypoint, "move waypoint circuit Handle");
							currentWaypoint.position = newPoint;
						}   
					}

					if (manager.showVertexHandles) {
						currentWaypointRotation = Tools.pivotRotation == PivotRotation.Local ? currentWaypoint.rotation : Quaternion.identity;

						EditorGUI.BeginChangeCheck ();

						oldPoint = currentWaypoint.position;
						oldPoint = Handles.DoPositionHandle (oldPoint, currentWaypointRotation);
						if (EditorGUI.EndChangeCheck ()) {
							Undo.RecordObject (currentWaypoint, "move waypoint circuit" + i);
							currentWaypoint.position = oldPoint;
						}
					}
				}
			}
		}
	}

	public override void OnInspectorGUI ()
	{
		GUILayout.BeginVertical (GUILayout.Height (30));

		EditorGUILayout.Space ();

		buttonStyle = new GUIStyle (GUI.skin.button);

		buttonStyle.fontStyle = FontStyle.Bold;
		buttonStyle.fontSize = 12;

		GUILayout.BeginVertical ("Main Settings", "window", GUILayout.Height (30));
		EditorGUILayout.PropertyField (smoothRoute);
		EditorGUILayout.PropertyField (editorVisualisationSubsteps);
		GUILayout.EndVertical ();

		EditorGUILayout.Space ();

		GUILayout.BeginVertical ("Gizmo Options", "window", GUILayout.Height (30));
		EditorGUILayout.PropertyField (showGizmo);
		if (showGizmo.boolValue) {
			EditorGUILayout.PropertyField (gizmoLabelColor);
			EditorGUILayout.PropertyField (gizmoRadius);
			EditorGUILayout.PropertyField (useHandleForVertex);
			if (useHandleForVertex.boolValue) {
				EditorGUILayout.PropertyField (handleRadius);
				EditorGUILayout.PropertyField (handleGizmoColor);
			} else {
				EditorGUILayout.PropertyField (showVertexHandles);
			}
		}
		GUILayout.EndVertical ();

		EditorGUILayout.Space ();

		GUILayout.EndVertical ();

		EditorGUILayout.Space ();

		GUILayout.BeginVertical ("Waypoints List", "window", GUILayout.Height (30));
		showUpperList (waypointList);
		GUILayout.EndVertical ();

		if (GUI.changed) {
			serializedObject.ApplyModifiedProperties ();
		}
		EditorGUILayout.Space ();
	}

	void showUpperList (SerializedProperty list)
	{
		EditorGUILayout.Space ();

		if (GUILayout.Button ("Show/Hide Multi Axes List", buttonStyle)) {
			list.isExpanded = !list.isExpanded;
		}

		EditorGUILayout.Space ();

		if (list.isExpanded) {

			EditorGUILayout.Space ();

			GUILayout.Label ("Number Of Waypoints: \t" + list.arraySize);

			EditorGUILayout.Space ();

			GUILayout.BeginHorizontal ();
			if (GUILayout.Button ("Add Point")) {
				manager.addNewWayPoint ();
			}
			if (GUILayout.Button ("Clear")) {
				list.arraySize = 0;
			}
			GUILayout.EndHorizontal ();

			EditorGUILayout.Space ();

			for (int i = 0; i < list.arraySize; i++) {
				GUILayout.BeginHorizontal ();
				if (i < list.arraySize && i >= 0) {
					EditorGUILayout.PropertyField (list.GetArrayElementAtIndex (i), new GUIContent ("", null, ""), false);
				}
				GUILayout.BeginHorizontal ();
				if (GUILayout.Button ("x")) {
					if (list.GetArrayElementAtIndex (i).objectReferenceValue) {
						Transform point = list.GetArrayElementAtIndex (i).objectReferenceValue as Transform;
						DestroyImmediate (point.gameObject);
					}
					list.DeleteArrayElementAtIndex (i);
					list.DeleteArrayElementAtIndex (i);
				}
				if (GUILayout.Button ("v")) {
					if (i >= 0) {
						list.MoveArrayElement (i, i + 1);
					}
				}
				if (GUILayout.Button ("^")) {
					if (i < list.arraySize) {
						list.MoveArrayElement (i, i - 1);
					}
				}
				if (GUILayout.Button ("+")) {
					manager.addNewWayPointAtIndex (i);
				}
				GUILayout.EndHorizontal ();
				GUILayout.EndHorizontal ();
			}

			EditorGUILayout.Space ();

			if (GUILayout.Button ("Rename Waypoints")) {
				manager.renameWaypoints ();
			}

			EditorGUILayout.Space ();

			if (GUILayout.Button ("Reset Waypoints Position")) {
				manager.resetWaypointsPositions ();
			}
		}       
	}
}
#endif