XFEWarframe

using System.Globalization;
using System.Reflection;
using System.Text.Json;

namespace XFEWarframe.Desktop.Editing;

/// <summary>Interface language is separate from game and Public Export item languages.</summary>
public static class UiText
{
    private static readonly Lazy<Dictionary<string, Dictionary<string, string>>> Catalog = new(Load);
    private static string language = "zh";
    public static string Language
    {
        get => language;
        set => language = Languages.Any(x => x.Code == value) ? value : "en";
    }
    public static IReadOnlyList<UiLanguage> Languages { get; } =
    [new("en", "English"), new("de", "Deutsch"), new("es", "Español"), new("fr", "Français"),
     new("pl", "Polski"), new("ru", "Русский"), new("uk", "Українська"), new("zh", "简体中文")];
    public static string Get(string key)
    {
        var data = Catalog.Value;
        return data.GetValueOrDefault(Language)?.GetValueOrDefault(key)
            ?? data.GetValueOrDefault("en")?.GetValueOrDefault(key)
            ?? data.GetValueOrDefault("zh")?.GetValueOrDefault(key) ?? key;
    }
    public static string Translate(string source) => Get(source);
    public static string Format(string source, params object?[] args) => string.Format(CultureInfo.CurrentCulture, Translate(source), args);
    private static Dictionary<string, Dictionary<string, string>> Load()
    {
        using var stream = typeof(UiText).Assembly.GetManifestResourceStream("XFEWarframe.UiTranslations.json")
            ?? throw new InvalidOperationException("Interface translation resources are missing.");
        return JsonSerializer.Deserialize<Dictionary<string, Dictionary<string, string>>>(stream)!;
    }
}

public sealed record UiLanguage(string Code, string Label)
{
    public static UiLanguage Find(string? code) => UiText.Languages.FirstOrDefault(x => x.Code == code) ?? UiText.Languages[0];
}