kawwa/ConfigManager.cs

using System.Collections.Generic;
using System.IO;
using System.Text.Json;
using Avalonia.Rendering.Composition;

namespace kawwa;

public static class ConfigManager
{
    private static Dictionary<string,string> Config = new Dictionary<string,string>();
    private static string ConfigPath = Path.Combine(App.AppDataPath, "prefs.json");

    public static void InitializeConfig()
    {
        if (File.Exists(ConfigPath))
        {
            var jsonString = File.ReadAllText(ConfigPath);
            var config = JsonSerializer.Deserialize<Dictionary<string, string>>(jsonString);
            if (config != null)
                Config = config;
        }
    }

    public static void SetValue(string key, string value)
    {
        Config[key] = value;
        var options = new JsonSerializerOptions { WriteIndented = true };
        var jsonString = JsonSerializer.Serialize(Config, options);
        File.WriteAllText(ConfigPath, jsonString);
    }

    public static string? GetValue(string key)
    {
        if (Config.TryGetValue(key, out string? value))
            return value;
        else
            return null;
    }
}