using UnityEngine;
using UnityEditor;
using System.Collections;
using System.Collections.Generic;
using System.IO;

namespace WorldStreamer2
{
    [CustomEditor(typeof(ColliderStreamer))]
    class ColliderStreamerEditor : Editor
    {

#if UNITY_5_3 || UNITY_5_3_OR_NEWER

        public override void OnInspectorGUI()
        {

            DrawDefaultInspector();

            ColliderStreamer myTarget = (ColliderStreamer)target;

            if (string.IsNullOrEmpty(myTarget.sceneName))
            {
                EditorGUILayout.HelpBox("Set scene name", MessageType.Error, true);
            }
            else
            {



                List<EditorBuildSettingsScene> scenesList = new List<EditorBuildSettingsScene>();
                scenesList.AddRange(EditorBuildSettings.scenes);


                if (!string.IsNullOrEmpty(myTarget.scenePath) && !File.Exists(myTarget.scenePath))
                {

                    EditorGUILayout.HelpBox("Scene collider doesn't exist.", MessageType.Error, true);


                    return;
                }

                //			myTarget.sceneName
                bool addScene = true;
                foreach (var item in scenesList)
                {
                    if (myTarget.scenePath == item.path && item.enabled)
                    {
                        addScene = false;
                        break;
                    }
                }

                if (addScene)
                {
                    EditorGUILayout.HelpBox("Add scenes from scene collection to build settings.", MessageType.Error, true);
                    if (GUILayout.Button("Add scenes to build settings"))
                    {
                        AddScenesToBuild(myTarget.scenePath);
                    }
                }


            }


        }

        /// <summary>
        /// Adds the scenes to build.
        /// </summary>
        void AddScenesToBuild(string scenePath)
        {

            List<EditorBuildSettingsScene> scenesList = new List<EditorBuildSettingsScene>();
            scenesList.AddRange(EditorBuildSettings.scenes);

            List<string> scenesToAdd = new List<string>();
            scenesToAdd.Add(scenePath);

            foreach (var item in scenesList)
            {
                if (scenesToAdd.Contains(item.path))
                {
                    scenesToAdd.Remove(item.path);
                    item.enabled = true;
                }
            }

            foreach (var item in scenesToAdd)
            {
                scenesList.Add(new EditorBuildSettingsScene(item, true));
            }

            EditorBuildSettings.scenes = scenesList.ToArray();
        }


#endif
    }

}