using System.Text.Json;
using DTLib.Filesystem;

namespace Meum.Server;

public class ServerConfig
{
    public string listener_ip { get; set; } = "127.0.0.1";
    public int listener_port { get; set; } = Constants.ServerPortDefault;
    public string certificate_path { get; set; } = "self-signed.pem";
    public string? key_path { get; set; } = "self-signed.key";

    private static JsonSerializerOptions _serializerOptions = new()
    {
        WriteIndented = true,
    };
    
    public void Save(IOPath file_path)
    {
        string serialized = JsonSerializer.Serialize(this, _serializerOptions);
        if (string.IsNullOrEmpty(serialized))
            throw new Exception("can't serialize config");
        File.WriteAllText(file_path, serialized);
    }

    public static ServerConfig LoadOrCreate(IOPath file_path)
    {
        if(File.Exists(file_path))
        {
            string serialized = File.ReadAllText(file_path);
            return JsonSerializer.Deserialize<ServerConfig>(serialized)
                ?? throw new Exception("can't deserialize config");
        }
        
        var c = new ServerConfig();
        c.Save(file_path);
        return c;
    }
}