namespace Godosa.Core.Diagnostics;

/// <summary>Opt-in debug categories from one environment value: a comma list,
/// case-insensitive; <c>all</c> turns on every category but not <see cref="Exact"/>
/// switches (perf experiments like <c>nohud</c>).</summary>
public sealed class DebugFlags
{
    private readonly string[] _names;

    public DebugFlags(string? value) =>
        _names = (value ?? "").Split(',', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);

    public bool On(string category) =>
        Array.Exists(_names, n =>
            n.Equals(category, StringComparison.OrdinalIgnoreCase) ||
            n.Equals("all", StringComparison.OrdinalIgnoreCase));

    public bool Exact(string name) =>
        Array.Exists(_names, n => n.Equals(name, StringComparison.OrdinalIgnoreCase));
}