using System;
using System.Threading;

/// <summary>
/// Log lines the client prints on every room load that say nothing a player can
/// act on and bury the lines that matter. Pure rules only, so they can be
/// exercised outside the game.
/// </summary>
internal static class LogNoiseRules
{
    private static readonly string[] Noise =
    {
        // Every chair and couch the dorm/Rec Center spawns complains that its
        // RigidbodyEx has no entity component - dozens of lines per room load,
        // all identical in substance.
        "has an RigidbodyEx but no",

        // TMP asks for an underline glyph the legacy Diggity font does not carry;
        // the text renders fine without it.
        "The character used for Underline is not available in font asset",
    };

    private static int _dropped;

    internal static int PatternCount => Noise.Length;

    internal static int DroppedCount => Volatile.Read(ref _dropped);

    internal static bool ShouldDrop(string message)
    {
        if (string.IsNullOrEmpty(message)) return false;

        foreach (var pattern in Noise)
        {
            if (message.IndexOf(pattern, StringComparison.OrdinalIgnoreCase) < 0) continue;
            Interlocked.Increment(ref _dropped);
            return true;
        }

        return false;
    }
}