Minecraft-Phantom-Panel/Web/Phantom.Web/Shared/AgentAddOrEditForm.razor

@using System.ComponentModel.DataAnnotations
@using Phantom.Common.Data.Web.Agent
@using Phantom.Common.Data.Web.Users
@using Phantom.Utils.Result
@using Phantom.Web.Services
@using Phantom.Web.Services.Agents
@inherits PhantomComponent
@inject AgentManager AgentManager
@inject Navigation Navigation

<Form Model="form" OnSubmit="AddOrEditAgent">
  <div class="row">
    <div class="col-xl-12 mb-3">
      <FormTextInput Id="agent-name" Label="Agent Name" @bind-Value="form.AgentName" />
    </div>
  </div>

  <FormButtonSubmit Label="@(EditedAgent == null ? "Create Agent" : "Edit Agent")" class="btn btn-primary" />
  <FormSubmitError />
</Form>

@code {

  [Parameter, EditorRequired]
  public Agent? EditedAgent { get; init; }

  private ConfigureAgentFormModel form = null!;

  private sealed class ConfigureAgentFormModel : FormModel {
    [Required(ErrorMessage = "Agent name is required.")]
    [StringLength(100, ErrorMessage = "Agent name must be at most 100 characters.")]
    public string AgentName { get; set; } = string.Empty;
  }

  protected override void OnInitialized() {
    form = new ConfigureAgentFormModel();

    if (EditedAgent != null) {
      var configuration = EditedAgent.Configuration;
      form.AgentName = configuration.AgentName;
    }
  }

  private async Task AddOrEditAgent(EditContext context) {
    await form.SubmitModel.StartSubmitting();

    var agentGuid = EditedAgent?.AgentGuid ?? Guid.NewGuid();
    var agentConfiguration = new AgentConfiguration(
      form.AgentName
    );

    var result = await AgentManager.CreateOrUpdateAgent(await GetAuthenticatedUser(), agentGuid, agentConfiguration, CancellationToken);

    switch (result.Variant()) {
      case Ok<CreateOrUpdateAgentResult>(CreateOrUpdateAgentResult.Success):
        await Navigation.NavigateTo("agents");
        break;

      case Ok<CreateOrUpdateAgentResult>(var createOrUpdateAgentResult):
        form.SubmitModel.StopSubmitting(createOrUpdateAgentResult.ToSentence());
        break;

      case Err<UserActionFailure>(UserActionFailure.NotAuthorized):
        form.SubmitModel.StopSubmitting("You do not have permission to create or edit agents.");
        break;

      default:
        form.SubmitModel.StopSubmitting("Unknown error.");
        break;
    }
  }

}