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/**
 * Copyright (c) 2016, CodiLime Inc.
 */

package io.deepsense.neptune.clientlibrary.models;

import java.util.UUID;
import java.util.function.Function;

/**
 * An object created to access and manipulate Neptune Job.
 *
 * Neptune job is a program registered for execution within Neptune.
 * Every neptune job consists of source code and configuration files defining metadata of the job.
 */
public interface Job {

    /**
     *
     * @return Id of this Job.
     */
    UUID getId();

    /**
     *
     * @return State of this job.
     */
    JobState getJobState();

    /**
     * Creates a new numeric channel with a given name and extra parameters.
     *
     *      * Channel numericChannel = job.createChannel("numeric_channel", true, true);
     *
     * numericChannel.send(1.0, 2.5);
     * numericChannel.send(1.5, 5);
     * 
     *
     * @param name Name of the channel
     * @param isHistoryPersisted If True, all values sent to the channel are memorized.
     *          Otherwise only the last value is available.
     * @return Channel @see io.deepsense.neptune.clientlibrary.models.Channel
     */
    Channel createNumericChannel(String name, boolean isHistoryPersisted);

    /**
     * Creates a new numeric channel with a given name. All values sent to the channel are
     * memorized. The channel values can be displayed on the job list.
     *
     * @param name Name of the channel
     * @return Channel @see io.deepsense.neptune.clientlibrary.models.Channel
     */
    Channel createNumericChannel(String name);

    /**
     * Creates a new text channel with a given name and extra parameters.
     *
     *      * Channel textChannel = job.createTextChannel("text_channel", true, true);
     *
     * textChannel.send(2.5, "text 1");
     * textChannel.send(3.0, "text 2");
     *
     * 
     *
     * @param name Name of the channel
     * @param isHistoryPersisted If True, all values sent to the channel are memorized.
     *          Otherwise only the last value is available.
     * @return Channel @see io.deepsense.neptune.clientlibrary.models.Channel
     */
    Channel createTextChannel(String name, boolean isHistoryPersisted);

    /**
     * Creates a new text channel with a given name. All values sent to the channel are
     * memorized. The channel values can be displayed on the job list.
     *
     * @param name Name of the channel
     * @return Channel @see io.deepsense.neptune.clientlibrary.models.Channel
     */
    Channel createTextChannel(String name);

    /**
     * Creates a new image channel with a given name.
     *
     *      * channel = job.createChannel("image_channel");
     *
     * channel.send(
     *      1.0,
     *      new NeptuneImage(
     *          "#1 image name",
     *          "#1 image description",
     *          "/home/ubuntu/image1.jpg"
     *      )
     * );
     * 
     *
     * @param name Name of the channel
     * @return Channel @see io.deepsense.neptune.clientlibrary.models.Channel
     */
    Channel createImageChannel(String name);

    /**
     * Creates a new chart that groups values of one or more numeric channels.
     *
     * Creating a chart:
     *
     *      * {@code
     * Channel ch1 = job.createChannel(
     *      "ch1",
     *      ChannelType.NUMERIC);
     *
     * Channel ch2 = job.createChannel(
     *      "ch2",
     *      ChannelType.NUMERIC);
     *
     * ArrayList series = new ArrayList<>();
     * series.add(new ChartSeries("channel 1", ch1, ChartSeriesType.LINE));
     * series.add(new ChartSeries("channel 2", ch2, ChartSeriesType.DOT));
     *
     * job.createChart(
     *      "comparison of ch1 & ch2",
     *      series);
     * }
     * 
     *
     * @param name Unique chart name.
     * @param series {@link io.deepsense.neptune.clientlibrary.models.ChartSeries}
     * @return Chart {@link io.deepsense.neptune.clientlibrary.models.Chart}
     */
    Chart createChart(String name, Iterable series);

    /**
     * Registers a new action that calls handler with provided argument on invocation.
     *
     * Registering an action:
     *
     *      * Session session = ...
     * String saveModel(String path) {
     *      session.saveModel(path);
     *      return "model saved";
     * }
     *
     * job.registerAction("save model", this::saveModel);
     * 
     *
     * @param name Unique action name.
     * @param handler An one argument function that will be called on an action invocation.
     * @return Action @see io.deepsense.neptune.clientlibrary.models.Action
     */
    Action registerAction(String name, Function handler);

    /**
     * Gets the set of user-defined tags for the job.
     * @see io.deepsense.neptune.clientlibrary.models.Tags
     *
     * @return Tags of this job.
     */
    Tags getTags();

    /**
     * Gets the set of user-defined properties of the Job.
     * @see io.deepsense.neptune.clientlibrary.models.JobProperties
     *
     * @return Properties of this job.
     */
    JobProperties getProperties();
}