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/*
 * The MIT License
 *
 * Modified work, Copyright (c) 2018 Istvan Bartha
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the Software
 * is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package tasks.tracker

import tasks.queue.TaskQueue
import tasks.util.reflectivelyInstantiateObject
import tasks.util.config.TasksConfig
import akka.actor.ActorSystem
import tasks.ui.EventListener

trait TrackerBootstrap {
  def start(implicit actorSystem: ActorSystem, config: TasksConfig): Tracker
}

trait Tracker {
  def eventListener: EventListener[TaskQueue.Event]
}

object TrackerBootstrap {
  def load(implicit config: TasksConfig): Option[TrackerBootstrap] =
    config.trackerFqcn match {
      case ""     => None
      case "none" => None
      case "default" =>
        Some(
          reflectivelyInstantiateObject[TrackerBootstrap](
            "tasks.tracker.TrackerBootstrapImpl"
          )
        )
      case other =>
        Some(reflectivelyInstantiateObject[TrackerBootstrap](other))
    }
}