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

namespace uc
{
    [CustomEditor(typeof(HotKeyManager))]
    public class HotKeyManagerEditor : Editor
    {
        SerializedProperty hotkeysProperty;
        //private Editor _editor;
        //HotKeyManager hotkeyMamager;
        GUIContent m_IconToolbarMinus;
        GUIContent m_AddButonContent;
        //int index = 0;

        protected void OnEnable()
        {
            if (target == null)
                return;

            //hotkeyMamager = target as HotKeyManager;
            hotkeysProperty = serializedObject.FindProperty("hotkeys");
            m_AddButonContent = new GUIContent("Add New Key");

            m_IconToolbarMinus = new GUIContent(EditorGUIUtility.IconContent("Toolbar Minus"));
            //m_IconToolbarMinus = new GUIContent("remove");
            m_IconToolbarMinus.tooltip = "Remove this key.";
        }

        public override void OnInspectorGUI()
        {
            if (target == null)
                return;

            serializedObject.Update();

            int toBeRemovedEntry = -1;

            EditorGUILayout.Space();

            Vector2 removeButtonSize = GUIStyle.none.CalcSize(m_IconToolbarMinus);

            for (int i = 0; i < hotkeysProperty.arraySize; ++i)
            {
                SerializedProperty delegateProperty = hotkeysProperty.GetArrayElementAtIndex(i);
                SerializedProperty enableProperty = delegateProperty.FindPropertyRelative("enable");
                SerializedProperty m_CallStateProperty = delegateProperty.FindPropertyRelative("m_CallState");
                SerializedProperty _keyCodeProperty = delegateProperty.FindPropertyRelative("_keyCode");
                SerializedProperty _keyDownEvent = delegateProperty.FindPropertyRelative("_keyDownEvent");

                EditorGUILayout.BeginHorizontal();
                enableProperty.boolValue = EditorGUILayout.ToggleLeft(enableProperty.displayName, enableProperty.boolValue);
                Rect callbackRect = GUILayoutUtility.GetRect(removeButtonSize.y, removeButtonSize.y, GUI.skin.button);
                if (GUI.Button(callbackRect, m_IconToolbarMinus, GUI.skin.button))
                {
                    toBeRemovedEntry = i;
                }
                EditorGUILayout.EndHorizontal();

                EditorGUI.BeginDisabledGroup(enableProperty.boolValue == false);
                {
                    EditorGUILayout.BeginHorizontal();
                    EditorGUILayout.PropertyField(m_CallStateProperty, new GUIContent(""));
                    EditorGUILayout.PropertyField(_keyCodeProperty, new GUIContent(""));
                    EditorGUILayout.EndHorizontal();
                    EditorGUILayout.PropertyField(_keyDownEvent);
                }
                EditorGUI.EndDisabledGroup();

                EditorGUILayout.Space();
            }

            if (toBeRemovedEntry > -1)
            {
                RemoveEntry(toBeRemovedEntry);
            }

            Rect btPosition = GUILayoutUtility.GetRect(m_AddButonContent, GUI.skin.button);
            const float addButonWidth = 200f;
            btPosition.x = btPosition.x + (btPosition.width - addButonWidth) / 2;
            btPosition.width = addButonWidth;
            if (GUI.Button(btPosition, m_AddButonContent))
            {
                hotkeysProperty.arraySize += 1;
            }

            serializedObject.ApplyModifiedProperties();
        }

        private void RemoveEntry(int toBeRemovedEntry)
        {
            hotkeysProperty.DeleteArrayElementAtIndex(toBeRemovedEntry);
        }
    }
}