using Microsoft.Extensions.Localization;
using System.Globalization;

internal class MockStringLocalizer : IStringLocalizer
{
    private readonly Dictionary<string, Dictionary<string, string>> _localizations;

    public MockStringLocalizer()
    {
        // Initialize your mock data here
        _localizations = new Dictionary<string, Dictionary<string, string>>
        {
            {"en", new Dictionary<string, string>
                {
                    {"Hello", "Hello"},
                    {"Goodbye", "Goodbye"}
                }
            },
            {"fr", new Dictionary<string, string>
                {
                    {"Hello", "Bonjour"},
                    {"Goodbye", "Au revoir"}
                }
            }
            // Add more languages as needed
        };
    }

    public LocalizedString this[string name]
    {
        get
        {
            var value = GetString(name);
            return new LocalizedString(name, value ?? name, resourceNotFound: value == null);
        }
    }

    public LocalizedString this[string name, params object[] arguments]
    {
        get
        {
            var format = GetString(name);
            var value = string.Format(format ?? name, arguments);
            return new LocalizedString(name, value, resourceNotFound: format == null);
        }
    }

    private string GetString(string name)
    {
        var culture = CultureInfo.CurrentUICulture.Name;
        if (_localizations.ContainsKey(culture) && _localizations[culture].ContainsKey(name))
        {
            return _localizations[culture][name];
        }

        // Fallback to English if specific culture not found
        return _localizations["en"].ContainsKey(name) ? _localizations["en"][name] : null;
    }

    public IEnumerable<LocalizedString> GetAllStrings(bool includeParentCultures)
    {
        var culture = CultureInfo.CurrentUICulture.Name;
        if (!_localizations.ContainsKey(culture))
        {
            culture = "en"; // Default to English
        }

        foreach (var localization in _localizations[culture])
        {
            yield return new LocalizedString(localization.Key, localization.Value);
        }
    }

    public IStringLocalizer WithCulture(CultureInfo culture)
    {
        // This method is obsolete and not recommended for use in .NET Core 3.0+ applications.
        throw new NotImplementedException();
    }
}