namespace WxAgent.Core;

public sealed record WechatNoteWindowCandidate(long Handle, int ProcessId, string Title, bool IsVisible, bool HasChatSurface);

public static class WechatNoteWindow
{
    public static long? FindOpened(IEnumerable<WechatNoteWindowCandidate> windows, int processId, IReadOnlySet<long> previousHandles)
    {
        var candidates = windows.Where(window => window.Handle != 0 && window.ProcessId == processId
            && !previousHandles.Contains(window.Handle) && window.IsVisible && !window.HasChatSurface
            && window.Title.Contains("笔记", StringComparison.Ordinal)).ToArray();
        if (candidates.Length > 1)
            throw new WxAgentException(WxAgentErrorCode.UiStructureChanged, "Multiple new note windows appeared; refusing ambiguous content.");
        return candidates.Length == 1 ? candidates[0].Handle : null;
    }
}