using System;
using AlicizaX.Localization.Runtime;
using AlicizaX;
using Paps.UnityToolbarExtenderUIToolkit;
using UnityEditor;
using UnityEngine;
using UnityEngine.UIElements;

[MainToolbarElement("LocalizationDropdownField", alignment: ToolbarAlign.Right, order: 0)]
public class LocalizationDropdownField : IMGUIContainer
{
    private static GUIContent appConfigBtContent;

    private static string[] _languageTypeNames;

    public void InitializeElement()
    {
        var nameArray = Enum.GetNames(typeof(Language));
        _languageTypeNames = new string[nameArray.Length - 1];
        for (int i = 1; i < nameArray.Length; i++)
        {
            var name = nameArray[i];
            _languageTypeNames[i - 1] = name;
        }

        appConfigBtContent =
            EditorGUIUtility.TrTextContentWithIcon("", "",
                "Settings");
        onGUIHandler = MyGUIMethod;
    }

    private void MyGUIMethod()
    {
        GUILayout.BeginHorizontal();
        string title = _languageTypeNames[GetPrefsIndex()];
        appConfigBtContent.text = title;
        if (EditorGUILayout.DropdownButton(appConfigBtContent, FocusType.Passive, EditorStyles.toolbarPopup, GUILayout.MaxWidth(120)))
        {
            DrawEditorToolDropdownMenus();
        }

        GUILayout.Space(5);
        GUILayout.EndHorizontal();
    }

    static void DrawEditorToolDropdownMenus()
    {
        int index = GetPrefsIndex();
        GenericMenu popMenu = new GenericMenu();
        for (int i = 0; i < _languageTypeNames.Length; i++)
        {
            var selected = index == i;
            var toolAttr = _languageTypeNames[i];
            popMenu.AddItem(new GUIContent(toolAttr), selected, menuIdx => { ClickToolsSubmenu((int)menuIdx); }, i);
        }

        popMenu.ShowAsContext();
    }

    static void ClickToolsSubmenu(int menuIdx)
    {
        EditorPrefs.SetInt(LocalizationComponent.PrefsKey, menuIdx + 1);
    }

    static int GetPrefsIndex()
    {
        return EditorPrefs.GetInt(LocalizationComponent.PrefsKey, 1) - 1;
    }
}