using ZB.MOM.WW.ScadaBridge.Commons.Messages.Streaming;
using ZB.MOM.WW.ScadaBridge.Commons.Types.Enums; // AlarmState

namespace ZB.MOM.WW.ScadaBridge.CentralUI.Components.Pages.Deployment;

/// <summary>
/// A node in a Debug View composition tree. Attribute (and, in DV-4, alarm)
/// names are path-qualified canonical names (e.g. <c>Motor1.Compressor.Pump</c>);
/// the tree is derived by splitting those names on <c>'.'</c>. A node is either a
/// branch (composition member, no payload, has children) or a leaf (one attribute
/// or one alarm). Consumed by the generic <c>TreeView&lt;TItem&gt;</c> component.
/// </summary>
public sealed class DebugTreeNode
{
    /// <summary>Full canonical path — stable TreeView key.</summary>
    public required string Key { get; init; }

    /// <summary>Display label (the last path segment).</summary>
    public required string Segment { get; init; }

    public List<DebugTreeNode> Children { get; } = new();

    // Leaf payloads — exactly one is set on a leaf; both null on a pure branch.
    public AttributeValueChanged? Attribute { get; init; }
    public AlarmStateChanged? Alarm { get; init; }   // computed leaf, native condition, or placeholder (DV-4)

    public bool IsNativeBinding { get; init; }       // branch grouping native conditions (DV-4)

    // Roll-up (set by the builder for branch nodes).
    public AlarmState WorstState { get; set; } = AlarmState.Normal;
    public int ActiveCount { get; set; }
    public bool HasBadQuality { get; set; }

    public bool HasChildren => Children.Count > 0;
}