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

@page "/agents"
@using System.Collections.Immutable
@using Phantom.Common.Data.Web.Agent
@using Phantom.Common.Data.Web.Users
@using Phantom.Utils.Collections
@using Phantom.Utils.Cryptography
@using Phantom.Web.Services.Agents
@using Phantom.Web.Services.Authorization
@inherits PhantomComponent
@inject AgentManager AgentManager

<h1>Agents</h1>

<PermissionView Permission="Permission.ManageAllAgents">
  <a href="agents/create" class="btn btn-primary" role="button">New Agent</a>
</PermissionView>

<Table Items="agentTable">
  <HeaderRow>
    <Column Width="50%">Name</Column>
    <Column Class="text-end" Width="24%" MinWidth="90px">Instances</Column>
    <Column Class="text-end" Width="26%" MinWidth="145px">Memory</Column>
    <Column>Version</Column>
    <Column Class="text-center">Status</Column>
    <Column Class="text-end" MinWidth="200px">Last Ping</Column>
    <Column>Actions</Column>
  </HeaderRow>
  <ItemRow Context="agent">
    @{
      var connectionKey = TokenGenerator.EncodeBytes(agent.ConnectionKey.AsSpan());
      var runtimeInfo = agent.RuntimeInfo;
      var usedInstances = agent.Stats?.RunningInstanceCount;
      var usedMemory = agent.Stats?.RunningInstanceMemory.InMegabytes;
    }
    <Cell>
      <p class="fw-semibold">@agent.Configuration.AgentName</p>
      <small class="font-monospace text-uppercase">@agent.AgentGuid.ToString()</small>
    </Cell>
    <Cell class="text-end">
      <ProgressBar Value="@(usedInstances ?? 0)" Maximum="@(runtimeInfo.MaxInstances ?? 0)">
        @if (runtimeInfo.MaxInstances is {} maxInstances) {
          <text>@(usedInstances?.ToString() ?? "?") / @maxInstances.ToString()</text>
        }
        else {
          @:N/A
        }
      </ProgressBar>
    </Cell>
    <Cell class="text-end">
      <ProgressBar Value="@(usedMemory ?? 0)" Maximum="@(runtimeInfo.MaxMemory?.InMegabytes ?? 0)">
        @if (runtimeInfo.MaxMemory is {} maxMemory) {
          <text>@(usedMemory?.ToString() ?? "?") / @maxMemory.InMegabytes MB</text>
        }
        else {
          @:N/A
        }
      </ProgressBar>
    </Cell>
    @if (runtimeInfo.VersionInfo is {} versionInfo) {
      <Cell class="text-condensed">
        Build: <span class="font-monospace">@versionInfo.BuildVersion</span>
        <br>
        Protocol: <span class="font-monospace">v@(versionInfo.ProtocolVersion.ToString())</span>
      </Cell>
    }
    else {
      <Cell>
        N/A
      </Cell>
    }
    @switch (agent.ConnectionStatus) {
      case AgentIsOnline:
        <Cell class="fw-semibold text-center text-success">Online</Cell>
        <Cell class="text-end">-</Cell>
        break;

      case AgentIsOffline:
        <Cell class="fw-semibold text-center">Offline</Cell>
        <Cell class="text-end">N/A</Cell>
        break;

      case AgentIsDisconnected status:
        <Cell class="fw-semibold text-center">Offline</Cell>
        <Cell class="text-end">
          <TimeWithOffset Time="status.LastPingTime" />
        </Cell>
        break;

      default:
        <Cell class="fw-semibold text-center">N/A</Cell>
        break;
    }
    <Cell>
      <PermissionView Permission="Permission.ManageAllAgents">
        <a href="agents/@agent.AgentGuid/edit" type="button" class="btn btn-primary btn-sm">Edit Agent</a>
        <button type="button" class="btn btn-warning btn-sm" data-clipboard="@connectionKey" onclick="copyToClipboard(this);">Copy Agent Key</button>
      </PermissionView>
    </Cell>
  </ItemRow>
  <NoItemsRow>
    No agents found.
  </NoItemsRow>
</Table>

@code {

  private TableData<Agent, Guid>? agentTable;

  protected override async Task OnInitializedAsync() {
    var authenticatedUser = await GetAuthenticatedUser();
    if (authenticatedUser == null) {
      return;
    }

    AgentManager.AgentsChanged.Subscribe(this, agents => {
      var sortedAgents = agents.Values
                               .Where(agent => authenticatedUser.Info.HasAccessToAgent(agent.AgentGuid))
                               .OrderBy(static agent => agent.Configuration.AgentName)
                               .ToImmutableArray();

      agentTable ??= new TableData<Agent, Guid>();
      agentTable.UpdateFrom(sortedAgents, static agent => agent.AgentGuid, static agent => agent, static (agent, _) => agent);
      InvokeAsync(StateHasChanged);
    });
  }

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

}