// Copyright (c) 2010 Bob Berkebile
// Please direct any bugs/comments/suggestions to http://www.pixelplacement.com
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

using UnityEngine;
using UnityEditor;
using System.Collections;

[CustomEditor( typeof( iTweenPathEX ) )]
public class iTweenPathEXEditor : Editor
{
    iTweenPathEX _target;
    GUIStyle style = new GUIStyle();
    public static int count = 0;

    void OnEnable()
    {
        //i like bold handle labels since I'm getting old:
        style.fontStyle = FontStyle.Bold;
        style.normal.textColor = Color.white;
        _target = (iTweenPathEX)target;

        //lock in a default path name:
        if(!_target.initialized)
        {
            _target.initialized = true;
            _target.pathName = "New Path " + ++count;
            _target.initialName = _target.pathName;
        }
    }

    public override void OnInspectorGUI()
    {
        //set curve time
        EditorGUILayout.BeginHorizontal();
        EditorGUILayout.PrefixLabel( "Play Time" );
        _target.totalePlayTime = EditorGUILayout.FloatField( _target.totalePlayTime );
        EditorGUILayout.EndHorizontal();

        //set camera dir opt
        EditorGUILayout.BeginHorizontal();
        EditorGUILayout.PrefixLabel( "Auto Camera Dir" );
        _target.adjustViewDirAuto = EditorGUILayout.Toggle( _target.adjustViewDirAuto );
        EditorGUILayout.EndHorizontal();

        //draw the path?
        EditorGUILayout.BeginHorizontal();
        EditorGUILayout.PrefixLabel( "Path Visible" );
        _target.pathVisible = EditorGUILayout.Toggle( _target.pathVisible );
        EditorGUILayout.EndHorizontal();

        //path name:
        EditorGUILayout.BeginHorizontal();
        EditorGUILayout.PrefixLabel( "Path Name" );
        _target.pathName = EditorGUILayout.TextField( _target.pathName );
        EditorGUILayout.EndHorizontal();

        if(_target.pathName == "")
        {
            _target.pathName = _target.initialName;
        }

        //path color:
        EditorGUILayout.BeginHorizontal();
        EditorGUILayout.PrefixLabel( "Path Color" );
        _target.pathColor = EditorGUILayout.ColorField( _target.pathColor );
        EditorGUILayout.EndHorizontal();

        //exploration segment count control:
        EditorGUILayout.BeginHorizontal();
        //EditorGUILayout.PrefixLabel("Node Count");
        _target.nodeCount = Mathf.Max( 2, EditorGUILayout.IntField( "Node Count", _target.nodeCount ) );
        //_target.nodeCount =  Mathf.Clamp(EditorGUILayout.IntSlider(_target.nodeCount, 0, 10), 2,100);
        EditorGUILayout.EndHorizontal();

        //add node?
        if(_target.nodeCount > _target.nodes.Count)
        {
            for(int i = 0; i < _target.nodeCount - _target.nodes.Count; i++)
            {
                _target.nodes.Add( Vector3.zero );
            }
        }

        //remove node?
        if(_target.nodeCount < _target.nodes.Count)
        {
            if(EditorUtility.DisplayDialog( "Remove path node?", "Shortening the node list will permantently destory parts of your path. This operation cannot be undone.", "OK", "Cancel" ))
            {
                int removeCount = _target.nodes.Count - _target.nodeCount;
                _target.nodes.RemoveRange( _target.nodes.Count - removeCount, removeCount );
            }
            else
            {
                _target.nodeCount = _target.nodes.Count;
            }
        }

        //node display:
        EditorGUI.indentLevel = 4;
        for(int i = 0; i < _target.nodes.Count; i++)
        {
            _target.nodes[i] = EditorGUILayout.Vector3Field( "Node " + ( i + 1 ), _target.nodes[i] );
        }

        //update and redraw:
        if(GUI.changed)
        {
            EditorUtility.SetDirty( _target );
        }
    }

    void OnSceneGUI()
    {
        if(_target.pathVisible)
        {
            if(_target.nodes.Count > 0)
            {
                //allow path adjustment undo:
                Undo.RecordObject( _target, "Adjust iTween Path" );

                //path begin and end labels:
                Handles.Label( _target.nodes[0], "'" + _target.pathName + "' Begin", style );
                Handles.Label( _target.nodes[_target.nodes.Count - 1], "'" + _target.pathName + "' End", style );

                //node handle display:
                for(int i = 0; i < _target.nodes.Count; i++)
                {
                    _target.nodes[i] = Handles.PositionHandle( _target.nodes[i], Quaternion.identity );
                }
            }
        }
    }
}