using System.ComponentModel;
using System.Threading.Tasks;
using System.Windows.Forms;
using HeuristicLab.Clients.Hive.CloudManager.Azure;
using HeuristicLab.Clients.Hive.CloudManager.Model;

namespace HeuristicLab.Clients.Hive.CloudManager.Views {
  public partial class DeleteHostedServiceView : Form {
    private const string formatDeleteHostedService = "Are you sure you want to delete \"{0}\"";
    private HostedService hostedService;
    private BackgroundWorker worker;

    public bool ErrorOccured { get; set; }

    public DeleteHostedServiceView(HostedService hs) {
      InitializeComponent();
      worker = new BackgroundWorker();
      worker.DoWork += new DoWorkEventHandler(DeleteHostedServiceTask);
      worker.RunWorkerCompleted += new RunWorkerCompletedEventHandler(WorkerCompleted);

      hostedService = hs;

      lblDialogText.Text = string.Format(formatDeleteHostedService, hostedService.HostedServiceProperties.Label);
    }

    private void btnNo_Click(object sender, System.EventArgs e) {
      this.Close();
    }

    private void btnYes_Click(object sender, System.EventArgs e) {
      SetControlsEnabled(false);
      progressBar.Visible = true;

      worker.RunWorkerAsync(hostedService);
    }

    private void SetControlsEnabled(bool isEnabled) {
      btnNo.Enabled = isEnabled;
      btnYes.Enabled = isEnabled;
    }

    private void DeleteHostedServiceTask(object sender, DoWorkEventArgs e) {
      HostedService hs = e.Argument as HostedService;

      //foreach (Deployment d in hs.Deployments) {
      //  string requestId = CloudManagerClient.Instance.AzureProvider.DeleteDeployment(hs.Subscription, hs.ServiceName, d.Name);
      //  Constants.OperationResult result = CloudManagerClient.Instance.AzureProvider.PollGetOperationStatus(hs.Subscription, requestId, 5, 30);
      //}

      Parallel.ForEach(hs.Deployments, dep => {
        string requestId = CloudManagerClient.Instance.AzureProvider.DeleteDeployment(hs.Subscription, hs.ServiceName, dep.Name);
        Constants.OperationResult result = CloudManagerClient.Instance.AzureProvider.PollGetOperationStatus(hs.Subscription, requestId, 4, 30);
      });
      CloudManagerClient.Instance.AzureProvider.DeleteHostedService(hs.Subscription, hs.ServiceName);
    }

    private void WorkerCompleted(object sender, RunWorkerCompletedEventArgs e) {
      progressBar.Visible = false;

      if (e.Error == null) {
        ErrorOccured = false;
        this.Close();
      } else {
        MessageBox.Show(e.Error.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
        ErrorOccured = true;
        this.Show();
        SetControlsEnabled(true);
      }
    }
  }
}