package jalview.ws2.actions.hmmer;

import java.util.List;
import java.util.Objects;

import jalview.api.AlignViewportI;
import jalview.datamodel.AlignmentI;
import jalview.viewmodel.AlignmentViewport;
import jalview.ws.params.ArgumentI;
import jalview.ws2.actions.BaseAction;
import jalview.ws2.actions.PollingTaskExecutor;
import jalview.ws2.actions.api.TaskEventListener;
import jalview.ws2.actions.api.TaskI;
import jalview.ws2.api.Credentials;
import jalview.ws2.client.api.AlignmentWebServiceClientI;
import jalview.ws2.client.api.WebServiceClientI;

/**
 * Implementation of the {@link BaseAction} for the phmmer client. This is NOT
 * how you should implement it. The action should be more generic and cover
 * range of similar services.
 * 
 * @author mmwarowny
 *
 */
// FIXME: Not an alignment action (temporary hack)
public class PhmmerAction extends BaseAction<AlignmentI>
{
  public static class Builder extends BaseAction.Builder<PhmmerAction>
  {
    protected AlignmentWebServiceClientI client;

    private Builder(AlignmentWebServiceClientI client)
    {
      super();
      Objects.requireNonNull(client);
      this.client = client;
    }

    public PhmmerAction build()
    {
      return new PhmmerAction(this);
    }
  }

  public static Builder newBuilder(AlignmentWebServiceClientI client)
  {
    return new Builder(client);
  }

  protected final AlignmentWebServiceClientI client;

  public PhmmerAction(Builder builder)
  {
    super(builder);
    client = builder.client;
  }

  public TaskI<AlignmentI> perform(AlignmentViewport viewport,
          List<ArgumentI> args, Credentials credentials,
          TaskEventListener<AlignmentI> handler)
  {
    var task = createTask(viewport, args, credentials);
    task.addTaskEventListener(handler);
    var executor = PollingTaskExecutor.fromPool(viewport.getServiceExecutor());
    var future = executor.submit(task);
    task.setCancelAction(() -> { future.cancel(true); });
    return task;
  }
  
  public PhmmerTask createTask(AlignViewportI viewport,
      List<ArgumentI> args, Credentials credentials) 
  {
    return new PhmmerTask(client, args, credentials, viewport.getAlignmentView(true));
  }

  @Override
  public boolean isActive(AlignmentViewport viewport)
  {
    return false;
  }
}