[e-mobility-charging-stations-simulator.git] / src / charging-station / ocpp / 1.6 / OCPP16RequestService.ts

// Partial Copyright Jerome Benoit. 2021. All Rights Reserved.

import { ACElectricUtils, DCElectricUtils } from '../../../utils/ElectricUtils';
import {
  AuthorizeRequest,
  OCPP16AuthorizeResponse,
  OCPP16StartTransactionResponse,
  OCPP16StopTransactionReason,
  OCPP16StopTransactionResponse,
  StartTransactionRequest,
  StopTransactionRequest,
} from '../../../types/ocpp/1.6/Transaction';
import { CurrentType, Voltage } from '../../../types/ChargingStationTemplate';
import {
  DiagnosticsStatusNotificationRequest,
  HeartbeatRequest,
  OCPP16BootNotificationRequest,
  OCPP16RequestCommand,
  StatusNotificationRequest,
} from '../../../types/ocpp/1.6/Requests';
import MeasurandPerPhaseSampledValueTemplates, {
  SampledValueTemplate,
} from '../../../types/MeasurandPerPhaseSampledValueTemplates';
import {
  MeterValueUnit,
  MeterValuesRequest,
  OCPP16MeterValue,
  OCPP16MeterValueMeasurand,
  OCPP16MeterValuePhase,
} from '../../../types/ocpp/1.6/MeterValues';

import type ChargingStation from '../../ChargingStation';
import Constants from '../../../utils/Constants';
import { ErrorType } from '../../../types/ocpp/ErrorType';
import MeasurandValues from '../../../types/MeasurandValues';
import { OCPP16BootNotificationResponse } from '../../../types/ocpp/1.6/Responses';
import { OCPP16ChargePointErrorCode } from '../../../types/ocpp/1.6/ChargePointErrorCode';
import { OCPP16ChargePointStatus } from '../../../types/ocpp/1.6/ChargePointStatus';
import { OCPP16DiagnosticsStatus } from '../../../types/ocpp/1.6/DiagnosticsStatus';
import { OCPP16ServiceUtils } from './OCPP16ServiceUtils';
import OCPPError from '../../../exception/OCPPError';
import OCPPRequestService from '../OCPPRequestService';
import type OCPPResponseService from '../OCPPResponseService';
import { SendParams } from '../../../types/ocpp/Requests';
import Utils from '../../../utils/Utils';
import logger from '../../../utils/Logger';

const moduleName = 'OCPP16RequestService';

export default class OCPP16RequestService extends OCPPRequestService {
  public constructor(chargingStation: ChargingStation, ocppResponseService: OCPPResponseService) {
    if (new.target?.name === moduleName) {
      throw new TypeError(`Cannot construct ${new.target?.name} instances directly`);
    }
    super(chargingStation, ocppResponseService);
  }

  public async sendHeartbeat(params?: SendParams): Promise<void> {
    const payload: HeartbeatRequest = {};
    await this.sendMessage(Utils.generateUUID(), payload, OCPP16RequestCommand.HEARTBEAT, params);
  }

  public async sendBootNotification(
    chargePointModel: string,
    chargePointVendor: string,
    chargeBoxSerialNumber?: string,
    firmwareVersion?: string,
    chargePointSerialNumber?: string,
    iccid?: string,
    imsi?: string,
    meterSerialNumber?: string,
    meterType?: string,
    params?: SendParams
  ): Promise<OCPP16BootNotificationResponse> {
    const payload: OCPP16BootNotificationRequest = {
      chargePointModel,
      chargePointVendor,
      ...(!Utils.isUndefined(chargeBoxSerialNumber) && { chargeBoxSerialNumber }),
      ...(!Utils.isUndefined(chargePointSerialNumber) && { chargePointSerialNumber }),
      ...(!Utils.isUndefined(firmwareVersion) && { firmwareVersion }),
      ...(!Utils.isUndefined(iccid) && { iccid }),
      ...(!Utils.isUndefined(imsi) && { imsi }),
      ...(!Utils.isUndefined(meterSerialNumber) && { meterSerialNumber }),
      ...(!Utils.isUndefined(meterType) && { meterType }),
    };
    return (await this.sendMessage(
      Utils.generateUUID(),
      payload,
      OCPP16RequestCommand.BOOT_NOTIFICATION,
      { ...params, skipBufferingOnError: true }
    )) as OCPP16BootNotificationResponse;
  }

  public async sendStatusNotification(
    connectorId: number,
    status: OCPP16ChargePointStatus,
    errorCode: OCPP16ChargePointErrorCode = OCPP16ChargePointErrorCode.NO_ERROR
  ): Promise<void> {
    const payload: StatusNotificationRequest = {
      connectorId,
      errorCode,
      status,
    };
    await this.sendMessage(Utils.generateUUID(), payload, OCPP16RequestCommand.STATUS_NOTIFICATION);
  }

  public async sendAuthorize(
    connectorId: number,
    idTag?: string
  ): Promise<OCPP16AuthorizeResponse> {
    const payload: AuthorizeRequest = {
      ...(!Utils.isUndefined(idTag) ? { idTag } : { idTag: Constants.DEFAULT_IDTAG }),
    };
    this.chargingStation.getConnectorStatus(connectorId).authorizeIdTag = idTag;
    return (await this.sendMessage(
      Utils.generateUUID(),
      payload,
      OCPP16RequestCommand.AUTHORIZE
    )) as OCPP16AuthorizeResponse;
  }

  public async sendStartTransaction(
    connectorId: number,
    idTag?: string
  ): Promise<OCPP16StartTransactionResponse> {
    const payload: StartTransactionRequest = {
      connectorId,
      ...(!Utils.isUndefined(idTag) ? { idTag } : { idTag: Constants.DEFAULT_IDTAG }),
      meterStart: this.chargingStation.getEnergyActiveImportRegisterByConnectorId(connectorId),
      timestamp: new Date().toISOString(),
    };
    return (await this.sendMessage(
      Utils.generateUUID(),
      payload,
      OCPP16RequestCommand.START_TRANSACTION
    )) as OCPP16StartTransactionResponse;
  }

  public async sendStopTransaction(
    transactionId: number,
    meterStop: number,
    idTag?: string,
    reason: OCPP16StopTransactionReason = OCPP16StopTransactionReason.NONE
  ): Promise<OCPP16StopTransactionResponse> {
    let connectorId: number;
    for (const id of this.chargingStation.connectors.keys()) {
      if (id > 0 && this.chargingStation.getConnectorStatus(id)?.transactionId === transactionId) {
        connectorId = id;
        break;
      }
    }
    const transactionEndMeterValue = OCPP16ServiceUtils.buildTransactionEndMeterValue(
      this.chargingStation,
      connectorId,
      meterStop
    );
    // FIXME: should be a callback, each OCPP commands implementation must do only one job
    this.chargingStation.getBeginEndMeterValues() &&
      this.chargingStation.getOcppStrictCompliance() &&
      !this.chargingStation.getOutOfOrderEndMeterValues() &&
      (await this.sendTransactionEndMeterValues(
        connectorId,
        transactionId,
        transactionEndMeterValue
      ));
    const payload: StopTransactionRequest = {
      transactionId,
      ...(!Utils.isUndefined(idTag) && { idTag }),
      meterStop,
      timestamp: new Date().toISOString(),
      ...(reason && { reason }),
      ...(this.chargingStation.getTransactionDataMeterValues() && {
        transactionData: OCPP16ServiceUtils.buildTransactionDataMeterValues(
          this.chargingStation.getConnectorStatus(connectorId).transactionBeginMeterValue,
          transactionEndMeterValue
        ),
      }),
    };
    return (await this.sendMessage(
      Utils.generateUUID(),
      payload,
      OCPP16RequestCommand.STOP_TRANSACTION
    )) as OCPP16StartTransactionResponse;
  }

  public async sendMeterValues(
    connectorId: number,
    transactionId: number,
    interval: number,
    debug = false
  ): Promise<void> {
    const meterValue: OCPP16MeterValue = {
      timestamp: new Date().toISOString(),
      sampledValue: [],
    };
    const connector = this.chargingStation.getConnectorStatus(connectorId);
    // SoC measurand
    const socSampledValueTemplate = this.chargingStation.getSampledValueTemplate(
      connectorId,
      OCPP16MeterValueMeasurand.STATE_OF_CHARGE
    );
    if (socSampledValueTemplate) {
      const socSampledValueTemplateValue = socSampledValueTemplate.value
        ? Utils.getRandomFloatFluctuatedRounded(
            parseInt(socSampledValueTemplate.value),
            socSampledValueTemplate.fluctuationPercent ?? Constants.DEFAULT_FLUCTUATION_PERCENT
          )
        : Utils.getRandomInteger(100);
      meterValue.sampledValue.push(
        OCPP16ServiceUtils.buildSampledValue(socSampledValueTemplate, socSampledValueTemplateValue)
      );
      const sampledValuesIndex = meterValue.sampledValue.length - 1;
      if (Utils.convertToInt(meterValue.sampledValue[sampledValuesIndex].value) > 100 || debug) {
        logger.error(
          `${this.chargingStation.logPrefix()} MeterValues measurand ${
            meterValue.sampledValue[sampledValuesIndex].measurand ??
            OCPP16MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER
          }: connectorId ${connectorId}, transaction ${connector.transactionId}, value: ${
            meterValue.sampledValue[sampledValuesIndex].value
          }/100`
        );
      }
    }
    // Voltage measurand
    const voltageSampledValueTemplate = this.chargingStation.getSampledValueTemplate(
      connectorId,
      OCPP16MeterValueMeasurand.VOLTAGE
    );
    if (voltageSampledValueTemplate) {
      const voltageSampledValueTemplateValue = voltageSampledValueTemplate.value
        ? parseInt(voltageSampledValueTemplate.value)
        : this.chargingStation.getVoltageOut();
      const fluctuationPercent =
        voltageSampledValueTemplate.fluctuationPercent ?? Constants.DEFAULT_FLUCTUATION_PERCENT;
      const voltageMeasurandValue = Utils.getRandomFloatFluctuatedRounded(
        voltageSampledValueTemplateValue,
        fluctuationPercent
      );
      if (
        this.chargingStation.getNumberOfPhases() !== 3 ||
        (this.chargingStation.getNumberOfPhases() === 3 &&
          this.chargingStation.getMainVoltageMeterValues())
      ) {
        meterValue.sampledValue.push(
          OCPP16ServiceUtils.buildSampledValue(voltageSampledValueTemplate, voltageMeasurandValue)
        );
      }
      for (
        let phase = 1;
        this.chargingStation.getNumberOfPhases() === 3 &&
        phase <= this.chargingStation.getNumberOfPhases();
        phase++
      ) {
        const phaseLineToNeutralValue = `L${phase}-N`;
        const voltagePhaseLineToNeutralSampledValueTemplate =
          this.chargingStation.getSampledValueTemplate(
            connectorId,
            OCPP16MeterValueMeasurand.VOLTAGE,
            phaseLineToNeutralValue as OCPP16MeterValuePhase
          );
        let voltagePhaseLineToNeutralMeasurandValue: number;
        if (voltagePhaseLineToNeutralSampledValueTemplate) {
          const voltagePhaseLineToNeutralSampledValueTemplateValue =
            voltagePhaseLineToNeutralSampledValueTemplate.value
              ? parseInt(voltagePhaseLineToNeutralSampledValueTemplate.value)
              : this.chargingStation.getVoltageOut();
          const fluctuationPhaseToNeutralPercent =
            voltagePhaseLineToNeutralSampledValueTemplate.fluctuationPercent ??
            Constants.DEFAULT_FLUCTUATION_PERCENT;
          voltagePhaseLineToNeutralMeasurandValue = Utils.getRandomFloatFluctuatedRounded(
            voltagePhaseLineToNeutralSampledValueTemplateValue,
            fluctuationPhaseToNeutralPercent
          );
        }
        meterValue.sampledValue.push(
          OCPP16ServiceUtils.buildSampledValue(
            voltagePhaseLineToNeutralSampledValueTemplate ?? voltageSampledValueTemplate,
            voltagePhaseLineToNeutralMeasurandValue ?? voltageMeasurandValue,
            null,
            phaseLineToNeutralValue as OCPP16MeterValuePhase
          )
        );
        if (this.chargingStation.getPhaseLineToLineVoltageMeterValues()) {
          const phaseLineToLineValue = `L${phase}-L${
            (phase + 1) % this.chargingStation.getNumberOfPhases() !== 0
              ? (phase + 1) % this.chargingStation.getNumberOfPhases()
              : this.chargingStation.getNumberOfPhases()
          }`;
          const voltagePhaseLineToLineSampledValueTemplate =
            this.chargingStation.getSampledValueTemplate(
              connectorId,
              OCPP16MeterValueMeasurand.VOLTAGE,
              phaseLineToLineValue as OCPP16MeterValuePhase
            );
          let voltagePhaseLineToLineMeasurandValue: number;
          if (voltagePhaseLineToLineSampledValueTemplate) {
            const voltagePhaseLineToLineSampledValueTemplateValue =
              voltagePhaseLineToLineSampledValueTemplate.value
                ? parseInt(voltagePhaseLineToLineSampledValueTemplate.value)
                : Voltage.VOLTAGE_400;
            const fluctuationPhaseLineToLinePercent =
              voltagePhaseLineToLineSampledValueTemplate.fluctuationPercent ??
              Constants.DEFAULT_FLUCTUATION_PERCENT;
            voltagePhaseLineToLineMeasurandValue = Utils.getRandomFloatFluctuatedRounded(
              voltagePhaseLineToLineSampledValueTemplateValue,
              fluctuationPhaseLineToLinePercent
            );
          }
          const defaultVoltagePhaseLineToLineMeasurandValue = Utils.getRandomFloatFluctuatedRounded(
            Voltage.VOLTAGE_400,
            fluctuationPercent
          );
          meterValue.sampledValue.push(
            OCPP16ServiceUtils.buildSampledValue(
              voltagePhaseLineToLineSampledValueTemplate ?? voltageSampledValueTemplate,
              voltagePhaseLineToLineMeasurandValue ?? defaultVoltagePhaseLineToLineMeasurandValue,
              null,
              phaseLineToLineValue as OCPP16MeterValuePhase
            )
          );
        }
      }
    }
    // Power.Active.Import measurand
    const powerSampledValueTemplate = this.chargingStation.getSampledValueTemplate(
      connectorId,
      OCPP16MeterValueMeasurand.POWER_ACTIVE_IMPORT
    );
    let powerPerPhaseSampledValueTemplates: MeasurandPerPhaseSampledValueTemplates = {};
    if (this.chargingStation.getNumberOfPhases() === 3) {
      powerPerPhaseSampledValueTemplates = {
        L1: this.chargingStation.getSampledValueTemplate(
          connectorId,
          OCPP16MeterValueMeasurand.POWER_ACTIVE_IMPORT,
          OCPP16MeterValuePhase.L1_N
        ),
        L2: this.chargingStation.getSampledValueTemplate(
          connectorId,
          OCPP16MeterValueMeasurand.POWER_ACTIVE_IMPORT,
          OCPP16MeterValuePhase.L2_N
        ),
        L3: this.chargingStation.getSampledValueTemplate(
          connectorId,
          OCPP16MeterValueMeasurand.POWER_ACTIVE_IMPORT,
          OCPP16MeterValuePhase.L3_N
        ),
      };
    }
    if (powerSampledValueTemplate) {
      OCPP16ServiceUtils.checkMeasurandPowerDivider(
        this.chargingStation,
        powerSampledValueTemplate.measurand
      );
      const errMsg = `${this.chargingStation.logPrefix()} MeterValues measurand ${
        powerSampledValueTemplate.measurand ??
        OCPP16MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER
      }: Unknown ${this.chargingStation.getCurrentOutType()} currentOutType in template file ${
        this.chargingStation.stationTemplateFile
      }, cannot calculate ${
        powerSampledValueTemplate.measurand ??
        OCPP16MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER
      } measurand value`;
      const powerMeasurandValues = {} as MeasurandValues;
      const unitDivider = powerSampledValueTemplate?.unit === MeterValueUnit.KILO_WATT ? 1000 : 1;
      const maxPower = Math.round(
        this.chargingStation.stationInfo.maxPower / this.chargingStation.stationInfo.powerDivider
      );
      const maxPowerPerPhase = Math.round(
        this.chargingStation.stationInfo.maxPower /
          this.chargingStation.stationInfo.powerDivider /
          this.chargingStation.getNumberOfPhases()
      );
      switch (this.chargingStation.getCurrentOutType()) {
        case CurrentType.AC:
          if (this.chargingStation.getNumberOfPhases() === 3) {
            const defaultFluctuatedPowerPerPhase =
              powerSampledValueTemplate.value &&
              Utils.getRandomFloatFluctuatedRounded(
                parseInt(powerSampledValueTemplate.value) /
                  this.chargingStation.getNumberOfPhases(),
                powerSampledValueTemplate.fluctuationPercent ??
                  Constants.DEFAULT_FLUCTUATION_PERCENT
              );
            const phase1FluctuatedValue =
              powerPerPhaseSampledValueTemplates?.L1?.value &&
              Utils.getRandomFloatFluctuatedRounded(
                parseInt(powerPerPhaseSampledValueTemplates.L1.value),
                powerPerPhaseSampledValueTemplates.L1.fluctuationPercent ??
                  Constants.DEFAULT_FLUCTUATION_PERCENT
              );
            const phase2FluctuatedValue =
              powerPerPhaseSampledValueTemplates?.L2?.value &&
              Utils.getRandomFloatFluctuatedRounded(
                parseInt(powerPerPhaseSampledValueTemplates.L2.value),
                powerPerPhaseSampledValueTemplates.L2.fluctuationPercent ??
                  Constants.DEFAULT_FLUCTUATION_PERCENT
              );
            const phase3FluctuatedValue =
              powerPerPhaseSampledValueTemplates?.L3?.value &&
              Utils.getRandomFloatFluctuatedRounded(
                parseInt(powerPerPhaseSampledValueTemplates.L3.value),
                powerPerPhaseSampledValueTemplates.L3.fluctuationPercent ??
                  Constants.DEFAULT_FLUCTUATION_PERCENT
              );
            powerMeasurandValues.L1 =
              phase1FluctuatedValue ??
              defaultFluctuatedPowerPerPhase ??
              Utils.getRandomFloatRounded(maxPowerPerPhase / unitDivider);
            powerMeasurandValues.L2 =
              phase2FluctuatedValue ??
              defaultFluctuatedPowerPerPhase ??
              Utils.getRandomFloatRounded(maxPowerPerPhase / unitDivider);
            powerMeasurandValues.L3 =
              phase3FluctuatedValue ??
              defaultFluctuatedPowerPerPhase ??
              Utils.getRandomFloatRounded(maxPowerPerPhase / unitDivider);
          } else {
            powerMeasurandValues.L1 = powerSampledValueTemplate.value
              ? Utils.getRandomFloatFluctuatedRounded(
                  parseInt(powerSampledValueTemplate.value),
                  powerSampledValueTemplate.fluctuationPercent ??
                    Constants.DEFAULT_FLUCTUATION_PERCENT
                )
              : Utils.getRandomFloatRounded(maxPower / unitDivider);
            powerMeasurandValues.L2 = 0;
            powerMeasurandValues.L3 = 0;
          }
          powerMeasurandValues.allPhases = Utils.roundTo(
            powerMeasurandValues.L1 + powerMeasurandValues.L2 + powerMeasurandValues.L3,
            2
          );
          break;
        case CurrentType.DC:
          powerMeasurandValues.allPhases = powerSampledValueTemplate.value
            ? Utils.getRandomFloatFluctuatedRounded(
                parseInt(powerSampledValueTemplate.value),
                powerSampledValueTemplate.fluctuationPercent ??
                  Constants.DEFAULT_FLUCTUATION_PERCENT
              )
            : Utils.getRandomFloatRounded(maxPower / unitDivider);
          break;
        default:
          logger.error(errMsg);
          throw new OCPPError(ErrorType.INTERNAL_ERROR, errMsg, OCPP16RequestCommand.METER_VALUES);
      }
      meterValue.sampledValue.push(
        OCPP16ServiceUtils.buildSampledValue(
          powerSampledValueTemplate,
          powerMeasurandValues.allPhases
        )
      );
      const sampledValuesIndex = meterValue.sampledValue.length - 1;
      const maxPowerRounded = Utils.roundTo(maxPower / unitDivider, 2);
      if (
        Utils.convertToFloat(meterValue.sampledValue[sampledValuesIndex].value) > maxPowerRounded ||
        debug
      ) {
        logger.error(
          `${this.chargingStation.logPrefix()} MeterValues measurand ${
            meterValue.sampledValue[sampledValuesIndex].measurand ??
            OCPP16MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER
          }: connectorId ${connectorId}, transaction ${connector.transactionId}, value: ${
            meterValue.sampledValue[sampledValuesIndex].value
          }/${maxPowerRounded}`
        );
      }
      for (
        let phase = 1;
        this.chargingStation.getNumberOfPhases() === 3 &&
        phase <= this.chargingStation.getNumberOfPhases();
        phase++
      ) {
        const phaseValue = `L${phase}-N`;
        meterValue.sampledValue.push(
          OCPP16ServiceUtils.buildSampledValue(
            (powerPerPhaseSampledValueTemplates[`L${phase}`] as SampledValueTemplate) ??
              powerSampledValueTemplate,
            powerMeasurandValues[`L${phase}`] as number,
            null,
            phaseValue as OCPP16MeterValuePhase
          )
        );
        const sampledValuesPerPhaseIndex = meterValue.sampledValue.length - 1;
        const maxPowerPerPhaseRounded = Utils.roundTo(maxPowerPerPhase / unitDivider, 2);
        if (
          Utils.convertToFloat(meterValue.sampledValue[sampledValuesPerPhaseIndex].value) >
            maxPowerPerPhaseRounded ||
          debug
        ) {
          logger.error(
            `${this.chargingStation.logPrefix()} MeterValues measurand ${
              meterValue.sampledValue[sampledValuesPerPhaseIndex].measurand ??
              OCPP16MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER
            }: phase ${
              meterValue.sampledValue[sampledValuesPerPhaseIndex].phase
            }, connectorId ${connectorId}, transaction ${connector.transactionId}, value: ${
              meterValue.sampledValue[sampledValuesPerPhaseIndex].value
            }/${maxPowerPerPhaseRounded}`
          );
        }
      }
    }
    // Current.Import measurand
    const currentSampledValueTemplate = this.chargingStation.getSampledValueTemplate(
      connectorId,
      OCPP16MeterValueMeasurand.CURRENT_IMPORT
    );
    let currentPerPhaseSampledValueTemplates: MeasurandPerPhaseSampledValueTemplates = {};
    if (this.chargingStation.getNumberOfPhases() === 3) {
      currentPerPhaseSampledValueTemplates = {
        L1: this.chargingStation.getSampledValueTemplate(
          connectorId,
          OCPP16MeterValueMeasurand.CURRENT_IMPORT,
          OCPP16MeterValuePhase.L1
        ),
        L2: this.chargingStation.getSampledValueTemplate(
          connectorId,
          OCPP16MeterValueMeasurand.CURRENT_IMPORT,
          OCPP16MeterValuePhase.L2
        ),
        L3: this.chargingStation.getSampledValueTemplate(
          connectorId,
          OCPP16MeterValueMeasurand.CURRENT_IMPORT,
          OCPP16MeterValuePhase.L3
        ),
      };
    }
    if (currentSampledValueTemplate) {
      OCPP16ServiceUtils.checkMeasurandPowerDivider(
        this.chargingStation,
        currentSampledValueTemplate.measurand
      );
      const errMsg = `${this.chargingStation.logPrefix()} MeterValues measurand ${
        currentSampledValueTemplate.measurand ??
        OCPP16MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER
      }: Unknown ${this.chargingStation.getCurrentOutType()} currentOutType in template file ${
        this.chargingStation.stationTemplateFile
      }, cannot calculate ${
        currentSampledValueTemplate.measurand ??
        OCPP16MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER
      } measurand value`;
      const currentMeasurandValues: MeasurandValues = {} as MeasurandValues;
      let maxAmperage: number;
      switch (this.chargingStation.getCurrentOutType()) {
        case CurrentType.AC:
          maxAmperage = ACElectricUtils.amperagePerPhaseFromPower(
            this.chargingStation.getNumberOfPhases(),
            this.chargingStation.stationInfo.maxPower /
              this.chargingStation.stationInfo.powerDivider,
            this.chargingStation.getVoltageOut()
          );
          if (this.chargingStation.getNumberOfPhases() === 3) {
            const defaultFluctuatedAmperagePerPhase =
              currentSampledValueTemplate.value &&
              Utils.getRandomFloatFluctuatedRounded(
                parseInt(currentSampledValueTemplate.value),
                currentSampledValueTemplate.fluctuationPercent ??
                  Constants.DEFAULT_FLUCTUATION_PERCENT
              );
            const phase1FluctuatedValue =
              currentPerPhaseSampledValueTemplates?.L1?.value &&
              Utils.getRandomFloatFluctuatedRounded(
                parseInt(currentPerPhaseSampledValueTemplates.L1.value),
                currentPerPhaseSampledValueTemplates.L1.fluctuationPercent ??
                  Constants.DEFAULT_FLUCTUATION_PERCENT
              );
            const phase2FluctuatedValue =
              currentPerPhaseSampledValueTemplates?.L2?.value &&
              Utils.getRandomFloatFluctuatedRounded(
                parseInt(currentPerPhaseSampledValueTemplates.L2.value),
                currentPerPhaseSampledValueTemplates.L2.fluctuationPercent ??
                  Constants.DEFAULT_FLUCTUATION_PERCENT
              );
            const phase3FluctuatedValue =
              currentPerPhaseSampledValueTemplates?.L3?.value &&
              Utils.getRandomFloatFluctuatedRounded(
                parseInt(currentPerPhaseSampledValueTemplates.L3.value),
                currentPerPhaseSampledValueTemplates.L3.fluctuationPercent ??
                  Constants.DEFAULT_FLUCTUATION_PERCENT
              );
            currentMeasurandValues.L1 =
              phase1FluctuatedValue ??
              defaultFluctuatedAmperagePerPhase ??
              Utils.getRandomFloatRounded(maxAmperage);
            currentMeasurandValues.L2 =
              phase2FluctuatedValue ??
              defaultFluctuatedAmperagePerPhase ??
              Utils.getRandomFloatRounded(maxAmperage);
            currentMeasurandValues.L3 =
              phase3FluctuatedValue ??
              defaultFluctuatedAmperagePerPhase ??
              Utils.getRandomFloatRounded(maxAmperage);
          } else {
            currentMeasurandValues.L1 = currentSampledValueTemplate.value
              ? Utils.getRandomFloatFluctuatedRounded(
                  parseInt(currentSampledValueTemplate.value),
                  currentSampledValueTemplate.fluctuationPercent ??
                    Constants.DEFAULT_FLUCTUATION_PERCENT
                )
              : Utils.getRandomFloatRounded(maxAmperage);
            currentMeasurandValues.L2 = 0;
            currentMeasurandValues.L3 = 0;
          }
          currentMeasurandValues.allPhases = Utils.roundTo(
            (currentMeasurandValues.L1 + currentMeasurandValues.L2 + currentMeasurandValues.L3) /
              this.chargingStation.getNumberOfPhases(),
            2
          );
          break;
        case CurrentType.DC:
          maxAmperage = DCElectricUtils.amperage(
            this.chargingStation.stationInfo.maxPower /
              this.chargingStation.stationInfo.powerDivider,
            this.chargingStation.getVoltageOut()
          );
          currentMeasurandValues.allPhases = currentSampledValueTemplate.value
            ? Utils.getRandomFloatFluctuatedRounded(
                parseInt(currentSampledValueTemplate.value),
                currentSampledValueTemplate.fluctuationPercent ??
                  Constants.DEFAULT_FLUCTUATION_PERCENT
              )
            : Utils.getRandomFloatRounded(maxAmperage);
          break;
        default:
          logger.error(errMsg);
          throw new OCPPError(ErrorType.INTERNAL_ERROR, errMsg, OCPP16RequestCommand.METER_VALUES);
      }
      meterValue.sampledValue.push(
        OCPP16ServiceUtils.buildSampledValue(
          currentSampledValueTemplate,
          currentMeasurandValues.allPhases
        )
      );
      const sampledValuesIndex = meterValue.sampledValue.length - 1;
      if (
        Utils.convertToFloat(meterValue.sampledValue[sampledValuesIndex].value) > maxAmperage ||
        debug
      ) {
        logger.error(
          `${this.chargingStation.logPrefix()} MeterValues measurand ${
            meterValue.sampledValue[sampledValuesIndex].measurand ??
            OCPP16MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER
          }: connectorId ${connectorId}, transaction ${connector.transactionId}, value: ${
            meterValue.sampledValue[sampledValuesIndex].value
          }/${maxAmperage}`
        );
      }
      for (
        let phase = 1;
        this.chargingStation.getNumberOfPhases() === 3 &&
        phase <= this.chargingStation.getNumberOfPhases();
        phase++
      ) {
        const phaseValue = `L${phase}`;
        meterValue.sampledValue.push(
          OCPP16ServiceUtils.buildSampledValue(
            (currentPerPhaseSampledValueTemplates[phaseValue] as SampledValueTemplate) ??
              currentSampledValueTemplate,
            currentMeasurandValues[phaseValue] as number,
            null,
            phaseValue as OCPP16MeterValuePhase
          )
        );
        const sampledValuesPerPhaseIndex = meterValue.sampledValue.length - 1;
        if (
          Utils.convertToFloat(meterValue.sampledValue[sampledValuesPerPhaseIndex].value) >
            maxAmperage ||
          debug
        ) {
          logger.error(
            `${this.chargingStation.logPrefix()} MeterValues measurand ${
              meterValue.sampledValue[sampledValuesPerPhaseIndex].measurand ??
              OCPP16MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER
            }: phase ${
              meterValue.sampledValue[sampledValuesPerPhaseIndex].phase
            }, connectorId ${connectorId}, transaction ${connector.transactionId}, value: ${
              meterValue.sampledValue[sampledValuesPerPhaseIndex].value
            }/${maxAmperage}`
          );
        }
      }
    }
    // Energy.Active.Import.Register measurand (default)
    const energySampledValueTemplate = this.chargingStation.getSampledValueTemplate(connectorId);
    if (energySampledValueTemplate) {
      OCPP16ServiceUtils.checkMeasurandPowerDivider(
        this.chargingStation,
        energySampledValueTemplate.measurand
      );
      const unitDivider =
        energySampledValueTemplate?.unit === MeterValueUnit.KILO_WATT_HOUR ? 1000 : 1;
      const maxEnergyRounded = Utils.roundTo(
        ((this.chargingStation.stationInfo.maxPower /
          this.chargingStation.stationInfo.powerDivider) *
          interval) /
          (3600 * 1000),
        2
      );
      const energyValueRounded = energySampledValueTemplate.value
        ? // Cumulate the fluctuated value around the static one
          Utils.getRandomFloatFluctuatedRounded(
            parseInt(energySampledValueTemplate.value),
            energySampledValueTemplate.fluctuationPercent ?? Constants.DEFAULT_FLUCTUATION_PERCENT
          )
        : Utils.getRandomFloatRounded(maxEnergyRounded);
      // Persist previous value on connector
      if (
        connector &&
        !Utils.isNullOrUndefined(connector.energyActiveImportRegisterValue) &&
        connector.energyActiveImportRegisterValue >= 0 &&
        !Utils.isNullOrUndefined(connector.transactionEnergyActiveImportRegisterValue) &&
        connector.transactionEnergyActiveImportRegisterValue >= 0
      ) {
        connector.energyActiveImportRegisterValue += energyValueRounded;
        connector.transactionEnergyActiveImportRegisterValue += energyValueRounded;
      } else {
        connector.energyActiveImportRegisterValue = 0;
        connector.transactionEnergyActiveImportRegisterValue = 0;
      }
      meterValue.sampledValue.push(
        OCPP16ServiceUtils.buildSampledValue(
          energySampledValueTemplate,
          Utils.roundTo(
            this.chargingStation.getEnergyActiveImportRegisterByTransactionId(transactionId) /
              unitDivider,
            2
          )
        )
      );
      const sampledValuesIndex = meterValue.sampledValue.length - 1;
      if (energyValueRounded > maxEnergyRounded || debug) {
        logger.error(
          `${this.chargingStation.logPrefix()} MeterValues measurand ${
            meterValue.sampledValue[sampledValuesIndex].measurand ??
            OCPP16MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER
          }: connectorId ${connectorId}, transaction ${
            connector.transactionId
          }, value: ${energyValueRounded}/${maxEnergyRounded}, duration: ${Utils.roundTo(
            interval / (3600 * 1000),
            4
          )}h`
        );
      }
    }
    const payload: MeterValuesRequest = {
      connectorId,
      transactionId,
      meterValue: [meterValue],
    };
    await this.sendMessage(Utils.generateUUID(), payload, OCPP16RequestCommand.METER_VALUES);
  }

  public async sendTransactionBeginMeterValues(
    connectorId: number,
    transactionId: number,
    beginMeterValue: OCPP16MeterValue
  ): Promise<void> {
    const payload: MeterValuesRequest = {
      connectorId,
      transactionId,
      meterValue: [beginMeterValue],
    };
    await this.sendMessage(Utils.generateUUID(), payload, OCPP16RequestCommand.METER_VALUES);
  }

  public async sendTransactionEndMeterValues(
    connectorId: number,
    transactionId: number,
    endMeterValue: OCPP16MeterValue
  ): Promise<void> {
    const payload: MeterValuesRequest = {
      connectorId,
      transactionId,
      meterValue: [endMeterValue],
    };
    await this.sendMessage(Utils.generateUUID(), payload, OCPP16RequestCommand.METER_VALUES);
  }

  public async sendDiagnosticsStatusNotification(
    diagnosticsStatus: OCPP16DiagnosticsStatus
  ): Promise<void> {
    const payload: DiagnosticsStatusNotificationRequest = {
      status: diagnosticsStatus,
    };
    await this.sendMessage(
      Utils.generateUUID(),
      payload,
      OCPP16RequestCommand.DIAGNOSTICS_STATUS_NOTIFICATION
    );
  }
}