@using Microsoft.EntityFrameworkCore
@using ZB.MOM.WW.OtOpcUa.AdminUI.Deployments
@using ZB.MOM.WW.OtOpcUa.AdminUI.Hubs
@using ZB.MOM.WW.OtOpcUa.Configuration
@inject CredentialReferencePreflightState State
@inject IDriverStatusSnapshotStore DriverStatus
@inject IServiceProvider Services

@* lmxopcua#815 upgrade preflight surface: stored / deployed configs whose credential references sit outside their
   driver's namespace (the boot scan, re-runnable here) plus running drivers that reported resolving one through the
   deprecated warn-only compatibility path (driver-health diagnostics, fleet-wide). Never shows a value. *@

@if (_findings.Count > 0 || _error is not null)
{
    <div class="alert alert-warning small mb-3" role="alert">
        <div class="d-flex justify-content-between align-items-start gap-2">
            <div>
                <strong>Credential references outside their driver's namespace (lmxopcua#815).</strong>
                The deploy gate refuses these; a driver deployed before the upgrade keeps resolving them in
                deprecated warn-only mode until its next deploy. Migrate each to the allowed form — see
                docs/security.md "Credential references are namespaced per driver".
            </div>
            <button class="btn btn-sm btn-outline-secondary" disabled="@_busy" @onclick="RecheckAsync">Re-check</button>
        </div>
        @if (_error is not null)
        {
            <div class="text-danger mt-1">@_error</div>
        }
        <ul class="mb-0 mt-2">
            @foreach (var f in _findings.Take(MaxRows))
            {
                <li>
                    <span class="badge bg-secondary me-1">@f.Source</span>
                    @if (!string.IsNullOrEmpty(f.DriverType)) { <span>@f.DriverType </span> }
                    driver <span class="mono">@f.DriverName</span>
                    @if (f.DeviceName is not null) { <span> device <span class="mono">@f.DeviceName</span></span> }
                    — @f.Problem
                </li>
            }
        </ul>
        @if (_findings.Count > MaxRows)
        {
            <div class="mt-1 text-muted">…and @(_findings.Count - MaxRows) more (see the node log).</div>
        }
    </div>
}

@code {
    private const int MaxRows = 25;
    private IReadOnlyList<CredentialReferenceFinding> _findings = [];
    private string? _error;
    private bool _busy;

    protected override void OnInitialized() => Compose(State.Current);

    private void Compose(CredentialReferencePreflightState.Snapshot snapshot)
    {
        _error = snapshot.Error;
        _findings = snapshot.Findings
            .Concat(CredentialReferencePreflight.RunningFindings(DriverStatus.GetAll()))
            .ToList();
    }

    private async Task RecheckAsync()
    {
        var factory = Services.GetService(typeof(IDbContextFactory<OtOpcUaConfigDbContext>)) as IDbContextFactory<OtOpcUaConfigDbContext>;
        if (factory is null) return;
        _busy = true;
        try
        {
            var findings = await new CredentialReferencePreflight(factory).ScanAsync(CancellationToken.None);
            var snapshot = new CredentialReferencePreflightState.Snapshot(findings, DateTime.UtcNow, null);
            State.Set(snapshot);
            Compose(snapshot);
        }
        catch (Exception)
        {
            _error = "The credential-reference preflight could not read the config DB.";
        }
        finally
        {
            _busy = false;
        }
    }
}