using System;
using UnityEditor;
using UnityEngine;
using VketCloudGUITools.Runtime;

namespace VketCloudGUITools.Editor
{
    [CustomEditor(typeof(GUIAction), isFallback = true)]
    public class GUIActionInspector : SubInspector
    {
        public override void OnSubInspectorGUI(Rect position)
        {
            var mainRect = position;
            mainRect.height -= EditorGUIUtility.singleLineHeight;

            var warningRect = position;
            warningRect.yMin = mainRect.yMax;

            // default inspector
            base.OnSubInspectorGUI(mainRect);

            // warning
            Color defaultContentColor = GUI.contentColor;
            GUI.contentColor = Color.yellow;
            EditorGUI.DrawRect(warningRect, new Color(1f, 1f, 0f, 1f / 32f));
            GUI.Label(warningRect, "-Warning- Custom Editor Not Found");
            GUI.contentColor = defaultContentColor;
        }

        public override float GetSubInspectorHeight()
        {
            return base.GetSubInspectorHeight() + EditorGUIUtility.singleLineHeight;
        }

        /// <summary>
        /// 選択肢から選ぶことも、自由入力も可能なTextField
        /// </summary>
        /// <param name="checkRect">文字列表示欄</param>
        /// <param name="typeRect">選択肢表示欄</param>
        /// <param name="actionName">文字列代入先</param>
        /// <param name="actionNameSelectableOptions">選択肢の一覧</param>
        protected string DrawActionNameTypeField(Rect checkRect, Rect typeRect, string actionName, string[] actionNameSelectableOptions)
        {
            // MEMO:見た目だけButtonにして、挙動はPopupにする
            int selectedIndex = -1;
            EditorGUI.BeginChangeCheck();
            if (Event.current.type == EventType.Repaint)
            {
                EditorGUI.Popup(checkRect, 0, new string[] { "Select" });
            }
            else
            {
                selectedIndex = EditorGUI.Popup(checkRect, Array.IndexOf(actionNameSelectableOptions, actionName), actionNameSelectableOptions);
            }
            if (EditorGUI.EndChangeCheck() && selectedIndex >= 0)
            {
                actionName = actionNameSelectableOptions[selectedIndex];
            }

            actionName = EditorGUI.TextField(typeRect, "Action", actionName);

            if (string.IsNullOrEmpty(actionName))
            {
                var contentColorBackup = GUI.contentColor;
                GUI.contentColor = Color.Lerp(GUI.contentColor, Color.grey, 0.5f);
                var textRect = new Rect(typeRect);
                textRect.x += EditorGUIUtility.labelWidth;
                GUI.Label(textRect, " (Input Action Name)");
                GUI.contentColor = contentColorBackup;
            }

            return actionName;
        }

        /// <summary>
        /// 選択肢を選べるような見た目だが、実際には選べない入力欄
        /// 他の入力欄と見た目を合わせる都合
        /// </summary>
        /// <param name="checkRect">文字列入力欄</param>
        /// <param name="typeRect">選択肢表示欄</param>
        /// <param name="actionName"></param>
        protected void DrawActionNameTypeFieldDummy(Rect checkRect, Rect typeRect, string actionName)
        {
            EditorGUI.BeginDisabledGroup(true);
            DrawActionNameTypeField(checkRect, typeRect, actionName, new string[] { actionName });
            EditorGUI.EndDisabledGroup();
        }
    }
}