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/*
 * Copyright 2009-20192020 C3 (www.c3.ai). All Rights Reserved.
 * This material, including without limitation any software, is the confidential trade secret and proprietary
 * information of C3 and its licensors. Reproduction, use and/or distribution of this material in any form is
 * strictly prohibited except as set forth in a written license agreement with C3 and/or its authorized distributors.
 * This material may be covered by one or more patents or pending patent applications.
 */

/**
 * A single light bulb capable of measuring various properties, including power consumption, light output, etc.
 */
entity type SmartBulb extends LightBulb mixes MetricEvaluatable, NLEvaluatable type key "SMRT_BLB" {

  /**
   * This bulb's historical measurements.
   */
  bulbMeasurements: [SmartBulbMeasurementSeries](smartBulb)

  /**
   * This bulb's historical predictions.
   */
  @db(order='descending(timestamp)')
  bulbPredictions: [SmartBulbPrediction](smartBulb)

  /**
   * This bulb's latest prediction.
   */
  currentPrediction: SmartBulbPrediction stored calc "bulbPredictions[0]"

  /**
   * This bulb's historical events.
   */
  bulbEvents: [SmartBulbEvent](smartBulb)

  /**
   * The latitude of this bulb.
   */
  latitude: double

  /**
   * The longitude of this bulb.
   */
  longitude: double

  /**
   * The unit of measurement used for this bulb's light output measurements.
   */
  lumensUOM: Unit

  /**
   * The unit of measurement used for this bulb's power consumption measurements.
   */
  powerUOM: Unit

  /**
   * The unit of measurement used for this bulb's temperature measurements.
   */
  temperatureUOM: Unit

  /**
   * The unit of measurement used for this bulb's voltage measurements.
   */
  voltageUOM: Unit

  /**
   * A SmartBulb is associated to a {@link Fixture} through a SmartBulbToFixtureRelation.
   */
  @db(order='descending(start), descending(end)')
  fixtureHistory: [SmartBulbToFixtureRelation](from)

  /**
   * The current Fixture to which this bulb is attached.
   */
  currentFixture: Fixture stored calc 'fixtureHistory[0].(end == null).to'

  /**
   * Method to determine the expected lumens of a light bulb
   */
  expectedLumens: function(wattage: !decimal, bulbType: !string): double js server

  /**
   * Returns the life span of this smartBulb
   */
  lifeSpanInYears: function(bulbId: string): double js server

  /**
   * Returns the average life span of all smartBulbs.
   */
  averageLifeSpan: function(): double js server

  /**
   * Returns the id of the smart bulb with the shortest recorded life span to date.
   */
  shortestLifeSpanBulb: function(): string js server

  /**
   * Returns the id of the smart bulb with the longest recorded life span to date.
   */
  longestLifeSpanBulb: function(): string js server

}