using ScadaLink.Commons.Entities.Audit;
using ScadaLink.Commons.Types.Audit;

namespace ScadaLink.CentralUI.Components.Pages.Audit;

/// <summary>
/// Code-behind for the central Audit Log page (#23 M7). Bundle B (M7-T2 + M7-T3)
/// wires up <c>AuditFilterBar</c> and <c>AuditResultsGrid</c>: the page owns the
/// active <see cref="AuditLogQueryFilter"/> and re-pushes a fresh instance to the
/// grid on every Apply (the grid uses reference identity as its "reload"
/// trigger). Row clicks land in <see cref="HandleRowSelected"/> — Bundle C wires
/// this to the drilldown drawer; for now it is a no-op seam so test stubs do
/// not error.
/// </summary>
public partial class AuditLogPage
{
    private AuditLogQueryFilter? _currentFilter;
    private AuditEvent? _selectedEvent;
    private bool _drawerOpen;

    private void HandleFilterChanged(AuditLogQueryFilter filter)
    {
        // Always reassign — the grid keys reloads on reference change, so even a
        // chip-for-chip identical filter must allocate a fresh instance.
        _currentFilter = filter;
    }

    private void HandleRowSelected(AuditEvent row)
    {
        // Bundle C: a grid row click hands us the full AuditEvent. We pin it as
        // the selected row and open the drilldown drawer — the drawer is fully
        // presentational so we do not need to refetch the row.
        _selectedEvent = row;
        _drawerOpen = true;
    }

    private void HandleDrawerClose()
    {
        // We deliberately keep _selectedEvent set so re-opening (e.g. via the
        // grid) shows the same row instantly without a re-render flicker.
        _drawerOpen = false;
    }
}