using System;
using System.Collections;
using Sirenix.OdinInspector;
using UnityEngine;
using UnityEngine.Localization.Settings;

namespace BlueWater
{
    public enum LocaleType
    {
        Korean = 0,
        English = 1,
        ChineseSimplified = 2,
        Spanish = 3
    }
    
    public class LocalizationManager : Singleton<LocalizationManager>
    {
        public bool IsInitialized;

        [SerializeField]
        private Material _defaultFontMaterial;
        
        private bool _isChanging;
        
        private static readonly int OutlineWidthHash = Shader.PropertyToID("_OutlineWidth");

        private void Start()
        {
            var index = ES3.Load(SaveData.Locale, GetCurrentLocaleIndex());
            ChangeLocale((LocaleType)index, () => IsInitialized = true);
        }

        /// <summary>
        /// <para>0 - 한국어</para>
        /// 1 - 영어
        /// </summary>
        /// <param name="index"></param>
        [Button("언어 변경")]
        public void ChangeLocale(LocaleType localeType, Action completeEvent = null)
        {
            if (_isChanging) return;

            StartCoroutine(ChangeLocaleCoroutine(localeType, completeEvent));
        }

        private IEnumerator ChangeLocaleCoroutine(LocaleType localeType, Action completeEvent)
        {
            _isChanging = true;

            yield return LocalizationSettings.InitializationOperation;
            LocalizationSettings.SelectedLocale = LocalizationSettings.AvailableLocales.Locales[(int)localeType];

            if (localeType == LocaleType.ChineseSimplified)
            {
                SetMaterialOutline(0.1f);
            }
            else
            {
                SetMaterialOutline(0.2f);
            }
            ES3.Save(SaveData.Locale, (int)localeType);
            
            _isChanging = false;
            completeEvent?.Invoke();
        }
        
        public int GetCurrentLocaleIndex()
        {
            var selectedLocale = LocalizationSettings.SelectedLocale;
            var locales = LocalizationSettings.AvailableLocales.Locales;

            for (var i = 0; i < locales.Count; i++)
            {
                if (locales[i] == selectedLocale)
                {
                    return i;
                }
            }
            return -1;
        }
        
        public string GetLocaleDisplayName(LocaleType localeType)
        {
            return localeType switch
            {
                LocaleType.Korean => "한국어",
                LocaleType.English => "English",
                LocaleType.ChineseSimplified => "中文(简体)",
                LocaleType.Spanish => "Español",
                _ => "Unknown"
            };
        }

        public void SetMaterialOutline(float value)
        {
            _defaultFontMaterial.SetFloat(OutlineWidthHash, value);
        }
    }
}