using System.Collections.Generic;
using System.Collections.Immutable;
using System.Diagnostics.CodeAnalysis;
using System.Globalization;

namespace StabilityMatrix.Avalonia.Languages;

[SuppressMessage("ReSharper", "MemberCanBePrivate.Global")]
public static class Cultures
{
    public static CultureInfo Default { get; } = new("en-US");

    public static CultureInfo Current => Resources.Culture;
    
    public static readonly Dictionary<string, CultureInfo> SupportedCulturesByCode =
        new Dictionary<string, CultureInfo>
        {
            ["en-US"] = Default,
            ["ja-JP"] = new("ja-JP")
        };

    public static IReadOnlyList<CultureInfo> SupportedCultures 
        => SupportedCulturesByCode.Values.ToImmutableList();
    
    public static CultureInfo GetSupportedCultureOrDefault(string? cultureCode)
    {
        if (cultureCode is null 
            || !SupportedCulturesByCode.TryGetValue(cultureCode, out var culture))
        {
            return Default;
        }
        
        return culture;
    }
    
    public static bool TrySetSupportedCulture(string? cultureCode)
    {
        if (cultureCode is null 
            || !SupportedCulturesByCode.TryGetValue(cultureCode, out var culture))
        {
            return false;
        }

        Resources.Culture = culture;
        return true;
    }
    
    public static bool TrySetSupportedCulture(CultureInfo? cultureInfo)
    {
        return cultureInfo is not null && TrySetSupportedCulture(cultureInfo.Name);
    }
}