ComiServMirror/ComiServ/Services/JsonConfigService.cs

using System.Text.Json;

namespace ComiServ.Services;

public class Configuration
{
    public string LibraryRoot { get; set; }
    public string DatabaseFile { get; set; }
    public double AutoScanPeriodHours { get; set; }
    public Configuration Copy()
        => MemberwiseClone() as Configuration
            //this really shouldn't be possible
            ?? throw new Exception("Failed to clone configuration");
}
public interface IConfigService
{
    public Configuration Config { get; }
}
public class JsonConfigService : IConfigService
{
    public Configuration _Config;
    //protect original
    public Configuration Config => _Config.Copy();
    public JsonConfigService(string filepath)
    {
        using var fileStream = File.OpenRead(filepath);
        _Config = JsonSerializer.Deserialize<Configuration>(fileStream)
            ?? throw new ArgumentException("Failed to parse config file");
    }
}