/*
 * Copyright 2006-2020 The MZmine Development Team
 *
 * This file is part of MZmine.
 *
 * MZmine is free software; you can redistribute it and/or modify it under the terms of the GNU
 * General Public License as published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * MZmine is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
 * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
 * Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with MZmine; if not,
 * write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
 * USA
 */

package io.github.mzmine.taskcontrol.impl;

import java.util.Arrays;
import java.util.logging.Logger;
import io.github.mzmine.taskcontrol.TaskStatus;
import javafx.application.Platform;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;

/**
 * This class stores all tasks (as WrappedTasks) in the queue of task controller and also provides
 * data for TaskProgressWindow (as TableModel).
 */
public class TaskQueue {

  private Logger logger = Logger.getLogger(this.getClass().getName());

  /**
   * This observable list stores the actual tasks
   */
  private final ObservableList<WrappedTask> queue = FXCollections.observableArrayList();

  public int getNumOfWaitingTasks() {
    final WrappedTask snapshot[] = getQueueSnapshot();
    final long numOfWaitingTasks = Arrays.asList(snapshot).stream()
        .filter(task -> ((task.getActualTask().getStatus() == TaskStatus.PROCESSING)
            || (task.getActualTask().getStatus() == TaskStatus.WAITING)))
        .count();
    return (int) numOfWaitingTasks;
  }

  public int getTotalPercentComplete() {
    double totalFinished = 0.0;

    final WrappedTask snapshot[] = getQueueSnapshot();

    for (WrappedTask task : snapshot) {
      totalFinished += task.getActualTask().getFinishedPercentage();
    }
    final int totalPercentFinished = (int) Math.floor(totalFinished / snapshot.length * 100);
    return totalPercentFinished;
  }

  void addWrappedTask(WrappedTask task) {
    logger.finest("Adding task \"" + task + "\" to the task controller queue");
    Platform.runLater(() -> queue.add(task));

  }

  void clear() {
    logger.finest("Clearing the task controller queue");
    Platform.runLater(() -> queue.clear());
  }

  boolean isEmpty() {
    return queue.isEmpty();
  }

  boolean allTasksFinished() {
    final int numOfWaitingTasks = getNumOfWaitingTasks();
    return numOfWaitingTasks == 0;
  }

  public WrappedTask[] getQueueSnapshot() {
    return queue.toArray(new WrappedTask[0]);
  }

  public ObservableList<WrappedTask> getTasks() {
    return queue;
  }

}

@@ -821,16 +821,64 @@
 .impl;%0A%0A
+import io.github.mzmine.taskcontrol.TaskStatus;%0A
 import j
@@ -931,56 +931,8 @@
 er;%0A
-import io.github.mzmine.taskcontrol.TaskStatus;%0A
 impo
@@ -1232,80 +1232,8 @@
  %7B%0A%0A
-  private Logger logger = Logger.getLogger(this.getClass().getName());%0A%0A
   /*
@@ -1359,29 +1359,149 @@
 ions
-.observableArrayList(
+%0A      .synchronizedObservableList(FXCollections.observableArrayList());%0A  private Logger logger = Logger.getLogger(this.getClass().getName()
 );%0A%0A

fix concurrent modification exception in task controller