namespace Aeshnidae.Junk;

/// <summary>
/// Per-mod configuration, read from Settings.json in the deployed mod folder
/// (next to the dll, not in source). Written with defaults on first run so it is
/// easy to find, and openable in-game with "/mod settings Aeshnidae.Junk".
/// Edit and /junk-reload.
/// </summary>
public class Settings
{
    public const string FileName = "Settings.json";

    /// <summary>
    /// The shortest text /junk accepts. "/junk a" would match most of a pack;
    /// three characters is enough for "gem" or "bag" and stops a slip from
    /// emptying it.
    /// </summary>
    public int MinimumTextLength { get; set; } = 3;

    private static readonly JsonSerializerOptions JsonOptions = new()
    {
        WriteIndented = true,
        ReadCommentHandling = JsonCommentHandling.Skip,
        AllowTrailingCommas = true,
    };

    public static Settings Load(string modPath)
    {
        var path = Path.Combine(modPath, FileName);

        try
        {
            if (File.Exists(path))
                return JsonSerializer.Deserialize<Settings>(File.ReadAllText(path), JsonOptions) ?? new Settings();

            var defaults = new Settings();
            defaults.Save(modPath);
            ModManager.Log($"[{Mod.Name}] wrote default settings to {path}");
            return defaults;
        }
        catch (Exception ex)
        {
            ModManager.Log($"[{Mod.Name}] could not read {path}, using defaults: {ex.Message}", ModManager.LogLevel.Warn);
            return new Settings();
        }
    }

    public void Save(string modPath)
    {
        try
        {
            File.WriteAllText(Path.Combine(modPath, FileName), JsonSerializer.Serialize(this, JsonOptions));
        }
        catch (Exception ex)
        {
            ModManager.Log($"[{Mod.Name}] could not save settings: {ex.Message}", ModManager.LogLevel.Error);
        }
    }
}