namespace ZB.MOM.WW.OtOpcUa.Host.Configuration
{
    /// <summary>
    ///     OPC UA server configuration. (SVC-003, OPC-001, OPC-012, OPC-013)
    /// </summary>
    public class OpcUaConfiguration
    {
        /// <summary>
        ///     Gets or sets the IP address or hostname the OPC UA server binds to.
        ///     Defaults to <c>0.0.0.0</c> (all interfaces). Set to a specific IP or hostname to restrict listening.
        /// </summary>
        public string BindAddress { get; set; } = "0.0.0.0";

        /// <summary>
        ///     Gets or sets the TCP port on which the OPC UA server listens for client sessions.
        /// </summary>
        public int Port { get; set; } = 4840;

        /// <summary>
        ///     Gets or sets the endpoint path appended to the host URI for the LMX OPC UA server.
        /// </summary>
        public string EndpointPath { get; set; } = "/LmxOpcUa";

        /// <summary>
        ///     Gets or sets the server name presented to OPC UA clients and used in diagnostics.
        /// </summary>
        public string ServerName { get; set; } = "LmxOpcUa";

        /// <summary>
        ///     Gets or sets the Galaxy name represented by the published OPC UA namespace.
        /// </summary>
        public string GalaxyName { get; set; } = "ZB";

        /// <summary>
        ///     Gets or sets the explicit application URI for this server instance.
        ///     When <see langword="null" />, defaults to <c>urn:{GalaxyName}:LmxOpcUa</c>.
        ///     Must be set to a unique value per instance when redundancy is enabled.
        /// </summary>
        public string? ApplicationUri { get; set; }

        /// <summary>
        ///     Gets or sets the maximum number of simultaneous OPC UA sessions accepted by the host.
        /// </summary>
        public int MaxSessions { get; set; } = 100;

        /// <summary>
        ///     Gets or sets the session timeout, in minutes, before idle client sessions are closed.
        /// </summary>
        public int SessionTimeoutMinutes { get; set; } = 30;

        /// <summary>
        ///     Gets or sets a value indicating whether alarm tracking is enabled.
        ///     When enabled, AlarmConditionState nodes are created for alarm attributes and InAlarm transitions are monitored.
        /// </summary>
        public bool AlarmTrackingEnabled { get; set; } = false;

        /// <summary>
        ///     Gets or sets the template-based alarm object filter. When <see cref="AlarmFilterConfiguration.ObjectFilters"/>
        ///     is empty, all alarm-bearing objects are monitored (current behavior). When patterns are supplied, only
        ///     objects whose template derivation chain matches a pattern (and their descendants) have alarms monitored.
        /// </summary>
        public AlarmFilterConfiguration AlarmFilter { get; set; } = new();
    }
}