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

namespace ActionTool
{

    public class ActionEditor : EditorWindow
    {
        [MenuItem("Erika/ActionTool/Open")]
        static void OpenTools()
        {
            ActionManager.AnimationWindow = GetWindow<ActionEditor>();
        }

        string m_SearchText = "";
        ActionEditorStyles styles;
        ActionEditorUI ui;
		int currentPickerWindow;

		IEnumerator coLoadAnimationAssets;
		Dictionary<string, Object> animationAssets = new Dictionary<string, Object>();

		public void OnEnable()
        {
            titleContent = new GUIContent("Action Editor");

			EditorApplication.update += OnUpdate;
			ActionManager.onSelectObj += OnSelectObj;
		}

		void OnUpdate()
		{
			if(coLoadAnimationAssets != null)
			{
				if (!coLoadAnimationAssets.MoveNext())
				{
					coLoadAnimationAssets = null;
				}
			}
		} 

		public void OnDisable()
        {
			EditorApplication.update -= OnUpdate;
			ActionManager.onSelectObj -= OnSelectObj;
		}

		public void OnGUI()
        {
            if (styles == null) styles = ActionEditorStyles.Get();
            if (ui == null) ui = ActionEditorUI.Get();
            if (ActionManager.CurrentUnit == null)
                ActionManager.Release();

            GUILayout.Space(5);
            GUI_SelectUnit();
            GUILayout.Space(5);
            GUI_AnimationList();
            GUILayout.Space(5);
        }

        private void GUI_SelectUnit()
        {
			GUILayout.BeginHorizontal();

			GameObject selectObj = EditorGUILayout.ObjectField(ActionManager.CurrentUnit, typeof(GameObject), false, GUILayout.Width(position.width - 160)) as GameObject;

			if (selectObj != null && selectObj != ActionManager.CurrentUnit)
			{
				ActionManager.OnSelectObj(selectObj);
				if (ActionManager.AnimationWindow != null)
				{
					ActionManager.AnimationWindow.Repaint();
				}
			}

			if (GUILayout.Button("Select", GUILayout.Width(70)))
            {
				currentPickerWindow = EditorGUIUtility.GetControlID(FocusType.Passive) + 100;
				EditorGUIUtility.ShowObjectPicker<GameObject>(ActionManager.CurrentUnit, false, "l:UnitPrefab", currentPickerWindow);
			}

			string commandName = Event.current.commandName;
			if(/*commandName.Equals("ObjectSelectorUpdated") || */commandName.Equals("ObjectSelectorClosed"))
			{
				GameObject go = EditorGUIUtility.GetObjectPickerObject() as GameObject;
				if (/*go != null && */ActionManager.CurrentUnit != go)
				{
					ActionManager.OnSelectObj(go);
					this.Repaint();
				}
			}

			if (GUILayout.Button("Reimport", GUILayout.Width(70)))
			{
				ActionManager.OnSelectObj(ActionManager.CurrentUnit);
			}

			GUILayout.EndHorizontal();

			//var scene = EditorSceneManager.GetActiveScene();
			//if (scene == null || scene.path != ActionManager.scenePath)
			//{
			//	if(GUILayout.Button("打开ActionToolScene"))
			//	{
			//		EditorSceneManager.OpenScene(ActionManager.scenePath);
			//	}
			//}

			if (ActionManager.CurrentUnit == null)
			{
				EditorGUILayout.HelpBox("选择角色prefab", MessageType.Warning);
			}

		}

		private Vector2 m_AnimtionListScroll;
        private void GUI_AnimationList()
        {
            if (!ActionManager.HasSelectObj())
                return; 

            EditorGUILayout.LabelField("Animation List");

            m_SearchText = GUILayout.TextField(m_SearchText, "SearchTextField", GUILayout.Width(position.width - 20)).ToLower();

            string animFolder = ActionManager.unitAnimationClipFolder;

            string[] animfiles = Directory.GetFiles(animFolder);

            if (animfiles != null && animfiles.Length > 0)
            {
                GUIStyle style = GUI.skin.GetStyle("Button");
                TextAnchor prevAnchor = style.alignment;
                TextClipping prevClipping = style.clipping;
                bool prevRichText = style.richText;
                style.alignment = TextAnchor.MiddleCenter;
                style.clipping = TextClipping.Clip;
                style.richText = true;

                m_AnimtionListScroll = EditorGUILayout.BeginScrollView(m_AnimtionListScroll);

                for (int i = 0; i < animfiles.Length; ++i)
                {
                    string file = animfiles[i];
                    if (file.Contains(".meta"))
                        continue;
                    string animName = Path.GetFileNameWithoutExtension(file);
                    bool show = m_SearchText == string.Empty || m_SearchText == "" || animName.ToLower().Contains(m_SearchText);
                    if (!show)
                        continue;
                    bool bChecked = ActionManager.CurrentAnimationName == animName;
                    EditorGUILayout.BeginHorizontal();

                    bool check = GUILayout.Toggle(bChecked, animName, style, GUILayout.Width(position.width - 60), GUILayout.Height(15));
                    if (check && ActionManager.CurrentAnimationName != animName)
                        ActionManager.OnSelectAnimation(animName);

					bool isFavorite = false;
					if (animationAssets != null && animationAssets.ContainsKey(file))
					{
						var labels = AssetDatabase.GetLabels(animationAssets[file]);
						for (int j = 0; j < labels.Length; ++j)
						{
							if (labels[j] == "GoodAnimation")
								isFavorite = true;
						}
					}
					if ((!animationAssets.ContainsKey(file) || animationAssets[file] == null) && coLoadAnimationAssets == null)
					{
						coLoadAnimationAssets = CoLoadAnimationAssets();
					}
					Color bgColor = GUI.backgroundColor;
					GUI.backgroundColor = isFavorite ? Color.yellow : Color.gray;
					if (GUILayout.Button("", styles.starButton, GUILayout.Width(12), GUILayout.Height(13)))
					{
						isFavorite = !isFavorite;
						if(animationAssets.ContainsKey(file))
						{
							if(!isFavorite)
							{
								AssetDatabase.SetLabels(animationAssets[file], new string[0]);
							}
							else
							{
								AssetDatabase.SetLabels(animationAssets[file], new string[1] { "GoodAnimation" });
							}
						}
					}
					GUI.backgroundColor = bgColor;

					if (GUILayout.Button("", styles.selectObj, GUILayout.Width(15), GUILayout.Height(15)))
                    {
                        ui.SelectObject(file);
                    }

                    EditorGUILayout.EndHorizontal();
                }
                 
                EditorGUILayout.EndScrollView();

                style.alignment = prevAnchor;
                style.clipping = prevClipping;
                style.richText = prevRichText;
            }
        }

		IEnumerator CoLoadAnimationAssets()
		{
			if (!ActionManager.HasSelectObj())
				yield break;

			if (animationAssets != null)
				animationAssets.Clear();
			else
				animationAssets = new Dictionary<string, Object>();

			string animFolder = ActionManager.unitAnimationClipFolder;

			string[] animfiles = Directory.GetFiles(animFolder);

			for (int i = 0; i < animfiles.Length; ++i)
			{
				string file = animfiles[i];
				if (file.Contains(".meta"))
					continue;
				var animFile = AssetDatabase.LoadMainAssetAtPath(file);
				if (animationAssets.ContainsKey(file))
				{
					animationAssets[file] = animFile;
				}
				else
				{
					animationAssets.Add(file, animFile);
				}
				this.Repaint();
				yield return null;
			}
		}

		void OnSelectObj(params object[] objs)
		{
			animationAssets.Clear();
			coLoadAnimationAssets = CoLoadAnimationAssets();
		}

	}

}