namespace ZB.MOM.WW.OtOpcUa.AdminUI.ScriptAnalysis;

/// <summary>Size limits for moving Monaco editor text across the Blazor Server circuit.</summary>
/// <remarks>
///     The editor text crosses JS → .NET only on demand (at blur and when a page saves), never per keystroke. Each
///     crossing is ONE SignalR message, bounded by the Blazor hub's <c>MaximumReceiveMessageSize</c>. The framework
///     default is 32 KB, which silently lost any larger script (the oversize invoke failed and Save persisted the
///     stale source), so <c>AddAdminUI</c> raises it to <see cref="HubMaximumReceiveMessageSize"/>. The editor JS
///     refuses to send a value whose serialized form exceeds <see cref="MaxEditorSyncBytes"/> — an oversize frame
///     would tear the circuit down — and the save surfaces that refusal to the author instead.
/// </remarks>
public static class ScriptEditorLimits
{
    /// <summary>The Blazor hub's receive limit, in bytes (1 MB).</summary>
    public const long HubMaximumReceiveMessageSize = 1024 * 1024;

    /// <summary>The largest serialized editor value the JS will send, leaving 64 KB of frame headroom.</summary>
    public const int MaxEditorSyncBytes = (int)HubMaximumReceiveMessageSize - 64 * 1024;

    /// <summary>
    ///     The most diagnostic markers the editor reports to .NET (for the Problems list) in one circuit message.
    ///     A non-C# paste produces several Roslyn errors per line; uncapped, a few thousand markers exceed the hub
    ///     limit and tear the circuit down. The JS sends the first N in display order (errors first) plus the total.
    ///     Monaco's own in-editor squiggles are local and stay uncapped (up to <see cref="MaxDiagnosticMarkers"/>).
    /// </summary>
    public const int MaxReportedMarkers = 200;

    /// <summary>Each reported marker's message is truncated to this many characters before it crosses the circuit.</summary>
    public const int MaxReportedMessageChars = 300;

    /// <summary>
    ///     The most markers the diagnostics endpoint returns (errors first). Bounds the analysis response and the
    ///     marker set Monaco renders for pathological input; an error is always kept when one exists, so the
    ///     editor still rejects exactly what publish rejects.
    /// </summary>
    public const int MaxDiagnosticMarkers = 1000;

    /// <summary>Each diagnostics-endpoint marker message is truncated to this many characters (a Roslyn message
    /// can quote an arbitrarily long pasted token).</summary>
    public const int MaxDiagnosticMessageChars = 1000;
}