using System.Text.Json;
using VideoDownloader.Core.Config;

namespace VideoDownloader.App.Core;

/// <summary>%AppData%/VideoDownloader/config.json 으로 설정 영속화</summary>
public static class ConfigStore
{
    private static string Dir => Path.Combine(
        Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "VideoDownloader");
    private static string FilePath => Path.Combine(Dir, "config.json");

    private static readonly JsonSerializerOptions JsonOpts = new() { WriteIndented = true };

    public static AppConfig Load()
    {
        try
        {
            if (File.Exists(FilePath))
                return JsonSerializer.Deserialize<AppConfig>(File.ReadAllText(FilePath)) ?? new AppConfig();
        }
        catch { /* 손상 시 기본값 */ }
        return new AppConfig();
    }

    public static void Save(AppConfig config)
    {
        try
        {
            Directory.CreateDirectory(Dir);
            File.WriteAllText(FilePath, JsonSerializer.Serialize(config, JsonOpts));
        }
        catch { /* 저장 실패는 무시 */ }
    }
}