using UnityEngine;
using UnityEngine.UI;

[DisallowMultipleComponent]
[RequireComponent(typeof(Text))]
public class LocalizedText : MonoBehaviour
{
    [SerializeField] private string localizationKey;
    [TextArea]
    [SerializeField] private string fallbackText;

    private Text _text;

    private void Awake()
    {
        _text = GetComponent<Text>();
    }

    private void OnEnable()
    {
        LocalizationService.EnsureInitialized();
        LocalizationService.LanguageChanged += HandleLanguageChanged;
        Refresh();
    }

    private void OnDisable()
    {
        LocalizationService.LanguageChanged -= HandleLanguageChanged;
    }

    public void Refresh()
    {
        if (_text == null)
        {
            _text = GetComponent<Text>();
        }

        if (_text == null)
        {
            return;
        }

        string fallback = string.IsNullOrEmpty(fallbackText) ? _text.text : fallbackText;

        if (string.IsNullOrWhiteSpace(localizationKey))
        {
            _text.text = LocalizationService.LocalizeLiteral(fallback);
            return;
        }

        if (LocalizationService.TryGet(localizationKey, out string localized))
        {
            _text.text = localized;
            return;
        }

        _text.text = LocalizationService.LocalizeLiteral(fallback);
    }

    private void HandleLanguageChanged(string languageCode)
    {
        Refresh();
    }
}