@page "/clusters/{ClusterId}"
@attribute [Authorize(Policy = AdminUiPolicies.AuthenticatedRead)]
@rendermode RenderMode.InteractiveServer
@using Microsoft.EntityFrameworkCore
@using ZB.MOM.WW.OtOpcUa.Configuration
@using ZB.MOM.WW.OtOpcUa.Configuration.Entities
@inject IDbContextFactory<OtOpcUaConfigDbContext> DbFactory
@inject NavigationManager Nav

@if (!_loaded)
{
    <p>Loading…</p>
}
else if (_cluster is null)
{
    <section class="panel notice rise" style="animation-delay:.02s">
        Cluster <span class="mono">@ClusterId</span> was not found.
        <a class="ms-2" href="/clusters">Back to list</a>.
    </section>
}
else
{
    <div class="d-flex justify-content-between align-items-center mb-3">
        <div>
            <h4 class="mb-0">@_cluster.Name</h4>
            <span class="mono text-muted">@_cluster.ClusterId</span>
            @if (!_cluster.Enabled) { <span class="chip chip-idle ms-2">Disabled</span> }
        </div>
        <div class="d-flex gap-2">
            <a href="/clusters/@ClusterId/edit" class="btn btn-outline-secondary btn-sm">Edit cluster</a>
            <a href="/deployments" class="btn btn-outline-primary btn-sm">Deployments</a>
        </div>
    </div>

    <ClusterNav ClusterId="@ClusterId" ActiveTab="overview" />

    <section class="card-grid rise" style="animation-delay:.08s">
        <div class="metric-card">
            <div class="panel-head">Cluster details</div>
            <div class="kv"><span class="k">Enterprise / Site</span><span class="v">@_cluster.Enterprise / @_cluster.Site</span></div>
            <div class="kv"><span class="k">Redundancy</span><span class="v">@_cluster.RedundancyMode (@_cluster.NodeCount node@(_cluster.NodeCount == 1 ? "" : "s"))</span></div>
            <div class="kv"><span class="k">Created</span><span class="v">@_cluster.CreatedAt.ToString("u") by @_cluster.CreatedBy</span></div>
            @if (_cluster.ModifiedAt is not null)
            {
                <div class="kv"><span class="k">Modified</span><span class="v">@_cluster.ModifiedAt?.ToString("u") by @(_cluster.ModifiedBy ?? "—")</span></div>
            }
            @if (!string.IsNullOrWhiteSpace(_cluster.Notes))
            {
                <div class="kv"><span class="k">Notes</span><span class="v">@_cluster.Notes</span></div>
            }
        </div>

        <div class="metric-card">
            <div class="panel-head">Last deployment</div>
            @if (_lastDeployment is null)
            {
                <div class="kv"><span class="k">Status</span><span class="v text-muted">none — cluster has never been deployed</span></div>
            }
            else
            {
                <div class="kv"><span class="k">Revision</span><span class="v mono">@_lastDeployment.RevisionHash[..16]…</span></div>
                <div class="kv"><span class="k">Status</span><span class="v">@_lastDeployment.Status</span></div>
                <div class="kv"><span class="k">Created</span><span class="v">@_lastDeployment.CreatedAtUtc.ToString("u")</span></div>
                @if (_lastDeployment.SealedAtUtc is not null)
                {
                    <div class="kv"><span class="k">Sealed</span><span class="v">@_lastDeployment.SealedAtUtc?.ToString("u")</span></div>
                }
            }
        </div>
    </section>

    <section class="panel rise mt-3" style="animation-delay:.14s">
        <div class="panel-head d-flex align-items-center">
            <span>Nodes</span>
            <a href="/clusters/@ClusterId/nodes/new" class="btn btn-sm btn-outline-primary ms-auto">New node</a>
        </div>
        @if (_nodes is null || _nodes.Count == 0)
        {
            <div style="padding:1rem" class="text-muted">No nodes registered.</div>
        }
        else
        {
            <div class="table-wrap">
                <table class="data-table">
                    <thead>
                        <tr>
                            <th>Node ID</th>
                            <th>Host</th>
                            <th>OPC UA port</th>
                            <th>ApplicationUri</th>
                            <th class="num">ServiceLevel base</th>
                            <th></th>
                        </tr>
                    </thead>
                    <tbody>
                        @foreach (var n in _nodes)
                        {
                            <tr>
                                <td><span class="mono">@n.NodeId</span></td>
                                <td>@n.Host</td>
                                <td class="num">@n.OpcUaPort</td>
                                <td><span class="mono small">@n.ApplicationUri</span></td>
                                <td class="num">@n.ServiceLevelBase</td>
                                <td><a href="/clusters/@ClusterId/nodes/@n.NodeId" class="btn btn-sm btn-outline-primary">Edit</a></td>
                            </tr>
                        }
                    </tbody>
                </table>
            </div>
        }
    </section>
}

@code {
    [Parameter] public string ClusterId { get; set; } = "";

    private bool _loaded;
    private ServerCluster? _cluster;
    private List<ClusterNode>? _nodes;
    private Deployment? _lastDeployment;

    protected override async Task OnInitializedAsync()
    {
        await using var db = await DbFactory.CreateDbContextAsync();
        _cluster = await db.ServerClusters.AsNoTracking()
            .FirstOrDefaultAsync(c => c.ClusterId == ClusterId);
        if (_cluster is not null)
        {
            _nodes = await db.ClusterNodes.AsNoTracking()
                .Where(n => n.ClusterId == ClusterId)
                .OrderBy(n => n.NodeId)
                .ToListAsync();
            _lastDeployment = await db.Deployments.AsNoTracking()
                .OrderByDescending(d => d.CreatedAtUtc)
                .FirstOrDefaultAsync();
        }
        _loaded = true;
    }
}
