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

namespace ActionTool
{

    public class ActionPreviewEditor : EditorWindow
    {
        private Texture m_UITextureStop;
        private Texture m_UITexturePause;
        private Texture m_UITexturePlay;
        private Texture m_UITextureNext;
        private Texture m_UITextureEnd;
        private Texture m_UITexturePrevious;
        private Texture m_UITextureStart;

        private GUIStyle m_StyleBold;

        private const float kToolbarControlMargin = 5;
        private const float kToolbarHeight = 50;
        private const float kToolbarControlSize = kToolbarHeight - kToolbarControlMargin * 2;

        private ActionEditorStyles styles;
        private ActionEditorUI ui;

        private void OnEnable()
        {
            titleContent = new GUIContent("Action Preview");

            m_UITextureStop = (Texture)Resources.Load("button_control_stop");
            m_UITexturePause = (Texture)Resources.Load("button_control_pause");
            m_UITexturePlay = (Texture)Resources.Load("button_control_play");
            m_UITextureNext = (Texture)Resources.Load("button_control_next");
            m_UITextureEnd = (Texture)Resources.Load("button_control_end"); 
            m_UITexturePrevious = (Texture)Resources.Load("button_control_previous");
            m_UITextureStart = (Texture)Resources.Load("button_control_start");

            styles = ActionEditorStyles.Get();
        }

        private void OnDisable()
        {
            ActionManager.PreviewWindow = null;
        }

        private void OnGUI()
        {
            if (ActionManager.CurrentAnimationName == null || ActionManager.CurrentAnimationName == "")
            {
                EditorGUILayout.HelpBox("选择动画", MessageType.Warning);
                return;
            }

            if (styles == null) styles = ActionEditorStyles.Get();
            if (ui == null) ui = ActionEditorUI.Get();

            GUI_Toolbar();
            GUI_Detail();
        }

        void GUI_Toolbar()
        {
            float x = 0, y = kToolbarControlMargin;
            GUI_Toolbar_BG();
            GUI_Toolbar_Start(ref x, ref y);
            GUI_Toolbar_Previous(ref x, ref y);
            GUI_Toolbar_Stop(ref x, ref y);
            GUI_Toolbar_Pause(ref x, ref y);
            GUI_Toolbar_Next(ref x, ref y);
            GUI_Toolbar_End(ref x, ref y);
        }

        void GUI_Toolbar_BG()
        {
            GUI.DrawTexture(new Rect(0, 0, position.width, 50), EditorStyles.toolbar.normal.background);
        }

        void GUI_Toolbar_Start(ref float x, ref float y)
        {
            x += kToolbarControlMargin;
            Rect rect = new Rect(x, y, kToolbarControlSize, kToolbarControlSize);
            if(GUI.Button(rect, m_UITextureStart))
            {

            }
            x += kToolbarControlSize;
        }

        void GUI_Toolbar_Previous(ref float x, ref float y)
        {
            x += kToolbarControlMargin;
            Rect rect = new Rect(x, y, kToolbarControlSize, kToolbarControlSize);
            if (GUI.Button(rect, m_UITexturePrevious))
            {

            }
            x += kToolbarControlSize;
        }

        void GUI_Toolbar_Stop(ref float x, ref float y)
        {
            x += kToolbarControlMargin;
            Rect rect = new Rect(x, y, kToolbarControlSize, kToolbarControlSize);
            if (GUI.Button(rect, m_UITextureStop))
            {

            }
            x += kToolbarControlSize;
        }

        void GUI_Toolbar_Pause(ref float x, ref float y)
        {
            x += kToolbarControlMargin;
            Rect rect = new Rect(x, y, kToolbarControlSize, kToolbarControlSize);
            Texture tex = ActionManager.IsPlay ? m_UITexturePlay : m_UITexturePause;
            if (GUI.Button(rect, tex))
            {
                ActionManager.Pause();
            }
            x += kToolbarControlSize;
        }

        void GUI_Toolbar_Next(ref float x, ref float y)
        {
            x += kToolbarControlMargin;
            Rect rect = new Rect(x, y, kToolbarControlSize, kToolbarControlSize);
            if (GUI.Button(rect, m_UITextureNext))
            {

            }
            x += kToolbarControlSize;
        }

        void GUI_Toolbar_End(ref float x, ref float y)
        {
            x += kToolbarControlMargin;
            Rect rect = new Rect(x, y, kToolbarControlSize, kToolbarControlSize);
            if (GUI.Button(rect, m_UITextureEnd))
            {

            }
            x += kToolbarControlSize;
        }

        void GUI_Detail()
        {
            float y = kToolbarHeight + 5;
            float x = 5;

            GUI.Label(new Rect(x, y, 105, 20), "Animation Name:");
            x += 105;
            GUI.Label(new Rect(x, y, 210, 20), ActionManager.CurrentAnimationName, styles.textBold);
            x += 200;

        }

        void Update()
        {
            ActionManager.UpdateFrame();
        }

    }

}