Minecraft-Phantom-Panel/Web/Phantom.Web/Pages/Instances.razor

@page "/instances"
@attribute [Authorize(Permission.ViewInstancesPolicy)]
@using System.Collections.Immutable
@using Phantom.Common.Data.Web.Instance
@using Phantom.Common.Data.Web.Users
@using Phantom.Web.Services.Agents
@using Phantom.Web.Services.Authorization
@using Phantom.Web.Services.Instances
@inherits Phantom.Web.Components.PhantomComponent
@inject AgentManager AgentManager
@inject InstanceManager InstanceManager

<h1>Instances</h1>

<PermissionView Permission="Permission.CreateInstances">
  <a href="instances/create" class="btn btn-primary" role="button">New Instance</a>
</PermissionView>

<table class="table align-middle">
  <thead>
    <tr>
      <Column Width="200px; 28%">Agent</Column>
      <Column Width="200px; 28%">Name</Column>
      <Column Width="130px; 11%">Version</Column>
      <Column Width="110px;  8%" Class="text-center">Server Port</Column>
      <Column Width="110px;  8%" Class="text-center">Rcon Port</Column>
      <Column Width=" 90px;  8%" Class="text-end">Memory</Column>
      <Column Width="320px">Identifier</Column>
      <Column Width="200px;  9%">Status</Column>
      <Column Width=" 75px">Actions</Column>
    </tr>
  </thead>
  @if (!instances.IsEmpty) {
    <tbody>
      @foreach (var (configuration, status, _) in instances) {
        var agentName = agentNamesByGuid.TryGetValue(configuration.AgentGuid, out var name) ? name : string.Empty;
        var instanceGuid = configuration.InstanceGuid.ToString();
        <tr>
          <td>@agentName</td>
          <td>@configuration.InstanceName</td>
          <td>@configuration.MinecraftServerKind @configuration.MinecraftVersion</td>
          <td class="text-center">
            <code>@configuration.ServerPort</code>
          </td>
          <td class="text-center">
            <code>@configuration.RconPort</code>
          </td>
          <td class="text-end">
            <code>@configuration.MemoryAllocation.InMegabytes MB</code>
          </td>
          <td>
            <code class="text-uppercase">@instanceGuid</code>
          </td>
          <td>
            <InstanceStatusText Status="status" />
          </td>
          <td>
            <a href="instances/@instanceGuid" class="btn btn-info btn-sm">Detail</a>
          </td>
        </tr>
      }
    </tbody>
  }
  @if (instances.IsEmpty) {
    <tfoot>
      <tr>
        <td colspan="9">
          No instances.
        </td>
      </tr>
    </tfoot>
  }
</table>

@code {

  private ImmutableDictionary<Guid, string> agentNamesByGuid = ImmutableDictionary<Guid, string>.Empty;
  private ImmutableArray<Instance> instances = ImmutableArray<Instance>.Empty;

  protected override void OnInitialized() {
    AgentManager.AgentsChanged.Subscribe(this, agents => {
      this.agentNamesByGuid = agents.ToImmutableDictionary(static agent => agent.Guid, static agent => agent.Name);
      InvokeAsync(StateHasChanged);
    });

    InstanceManager.InstancesChanged.Subscribe(this, instances => {
      this.instances = instances.Values
                                .OrderBy(instance => agentNamesByGuid.TryGetValue(instance.Configuration.AgentGuid, out var agentName) ? agentName : string.Empty)
                                .ThenBy(static instance => instance.Configuration.InstanceName)
                                .ToImmutableArray();
      InvokeAsync(StateHasChanged);
    });
  }

  protected override void OnDisposed() {
    AgentManager.AgentsChanged.Unsubscribe(this);
    InstanceManager.InstancesChanged.Unsubscribe(this);
  }

}