# frozen_string_literal: true

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# load OpenStudio measure libraries from openstudio-extension gem
require 'openstudio-extension'
require 'openstudio/extension/core/os_lib_helper_methods'
require 'openstudio/extension/core/os_lib_schedules'

# load OpenStudio measure libraries
require "#{File.dirname(__FILE__)}/resources/OsLib_HVAC_zedg_vrf"

# start the measure
class ZEDGVRFWithDOAS < OpenStudio::Measure::ModelMeasure
  # define the name that a user will see, this method may be deprecated as
  # the display name in PAT comes from the name field in measure.xml
  def name
    return 'ZEDG VRF with DOAS'
  end

  # define the arguments that the user will input
  def arguments(model)
    args = OpenStudio::Measure::OSArgumentVector.new

    # create an argument for a space type to be used in the model, to see if one should be mapped as ceiling return air plenum
    spaceTypes = model.getSpaceTypes
    usedSpaceTypes_handle = OpenStudio::StringVector.new
    usedSpaceTypes_displayName = OpenStudio::StringVector.new
    spaceTypes.each do |spaceType| # TODO: - I need to update this to use helper so GUI sorts by display name
      if !spaceType.spaces.empty? # only show space types used in the building
        usedSpaceTypes_handle << spaceType.handle.to_s
        usedSpaceTypes_displayName << spaceType.name.to_s
      end
    end

    # make an argument for space type
    ceilingReturnPlenumSpaceType = OpenStudio::Measure::OSArgument.makeChoiceArgument('ceilingReturnPlenumSpaceType', usedSpaceTypes_handle, usedSpaceTypes_displayName, false)
    ceilingReturnPlenumSpaceType.setDisplayName('This space type should be part of a ceiling return air plenum.')
    args << ceilingReturnPlenumSpaceType

    # make an argument for material and installation cost
    # todo - I would like to split the costing out to the air loops weighted by area of building served vs. just sticking it on the building
    costTotalHVACSystem = OpenStudio::Measure::OSArgument.makeDoubleArgument('costTotalHVACSystem', true)
    costTotalHVACSystem.setDisplayName('Total Cost for HVAC System ($).')
    costTotalHVACSystem.setDefaultValue(0.0)
    args << costTotalHVACSystem

    # make an argument to remove existing costs
    remake_schedules = OpenStudio::Measure::OSArgument.makeBoolArgument('remake_schedules', true)
    remake_schedules.setDisplayName('Apply recommended availability and ventilation schedules for air handlers?')
    remake_schedules.setDefaultValue(true)
    args << remake_schedules

    return args
  end

  # define what happens when the measure is run
  def run(model, runner, user_arguments)
    super(model, runner, user_arguments)

    # use the built-in error checking
    if !runner.validateUserArguments(arguments(model), user_arguments)
      return false
    end

    # hard coded default values from old measure arguments
    vrfCondenserType = 'AirCooled'
    vrfCoolCOP = 4.0
    vrfHeatCOP = 4.0
    vrfMinOATHPHeat = -4.0
    vrfDefrost = 'Resistive'
    vrfHPHeatRecovery = 'Yes'
    vrfEquivPipingLength = 100.0
    vrfPipingHeight = 35.0
    doasFanType = 'Variable'
    doasERV = 'plate w/o economizer lockout - zedg'
    doasEvap = 'none'
    doasDXEER = 10.0

    parameters = { 'vrfCondenserType' => vrfCondenserType,
                   'vrfCoolCOP' => vrfCoolCOP,
                   'vrfHeatCOP' => vrfHeatCOP,
                   'vrfMinOATHPHeat' => vrfMinOATHPHeat,
                   'vrfDefrost' => vrfDefrost,
                   'vrfHPHeatRecovery' => vrfHPHeatRecovery,
                   'vrfEquivPipingLength' => vrfEquivPipingLength,
                   'vrfPipingHeight' => vrfPipingHeight,
                   'doasFanType' => doasFanType,
                   'doasERV' => doasERV,
                   'doasEvap' => doasEvap,
                   'doasDXEER' => doasDXEER }

    ### START INPUTS
    # assign the user inputs to variables
    ceilingReturnPlenumSpaceType = runner.getOptionalWorkspaceObjectChoiceValue('ceilingReturnPlenumSpaceType', user_arguments, model)
    costTotalHVACSystem = runner.getDoubleArgumentValue('costTotalHVACSystem', user_arguments)
    remake_schedules = runner.getBoolArgumentValue('remake_schedules', user_arguments)
    # check that spaceType was chosen and exists in model
    ceilingReturnPlenumSpaceTypeCheck = OsLib_HelperMethods.checkOptionalChoiceArgFromModelObjects(ceilingReturnPlenumSpaceType, 'ceilingReturnPlenumSpaceType', 'to_SpaceType', runner, user_arguments)
    ceilingReturnPlenumSpaceTypeCheck == false ? (return false) : (ceilingReturnPlenumSpaceType = ceilingReturnPlenumSpaceTypeCheck['modelObject'])
    # default building/ secondary space types
    standardBuildingTypeTest = [] # ML Not used yet
    secondarySpaceTypeTest = ['Cafeteria', 'Kitchen', 'Gym', 'Auditorium']
    primarySpaceType = 'Office'
    if doasFanType == 'Variable'
      primaryHVAC = { 'doas' => true, 'fan' => 'Variable', 'heat' => 'SingleDX', 'cool' => 'TwoSpeedDX' }
    else
      primaryHVAC = { 'doas' => true, 'fan' => 'Constant', 'heat' => 'Gas', 'cool' => 'SingleDX' }
    end
    secondaryHVAC = { 'fan' => 'None', 'heat' => 'None', 'cool' => 'None' } # ML not used for office; leave or empty?
    zoneHVAC = 'VRF'
    chillerType = 'None' # set to none if chiller not used
    radiantChillerType = 'None' # set to none if not radiant system
    allHVAC = { 'primary' => primaryHVAC, 'secondary' => secondaryHVAC, 'zone' => zoneHVAC }

    ### END INPUTS

    ### START SORT ZONES
    options = { 'standardBuildingTypeTest' => standardBuildingTypeTest, # ML Not used yet
                'secondarySpaceTypeTest' => secondarySpaceTypeTest,
                'ceilingReturnPlenumSpaceType' => ceilingReturnPlenumSpaceType }
    zonesSorted = OsLib_HVAC_zedg_vrf.sortZones(model, runner, options)
    zonesPrimary = zonesSorted['zonesPrimary']
    zonesSecondary = zonesSorted['zonesSecondary']
    zonesPlenum = zonesSorted['zonesPlenum']
    zonesUnconditioned = zonesSorted['zonesUnconditioned']
    ### END SORT ZONES

    ### START REPORT INITIAL CONDITIONS
    OsLib_HVAC_zedg_vrf.reportConditions(model, runner, 'initial')
    ### END REPORT INITIAL CONDITIONS

    ### START ASSIGN HVAC SCHEDULES
    options = { 'primarySpaceType' => primarySpaceType,
                'allHVAC' => allHVAC,
                'remake_schedules' => remake_schedules }
    schedulesHVAC = OsLib_HVAC_zedg_vrf.assignHVACSchedules(model, runner, options)
    # assign schedules
    primary_SAT_schedule = schedulesHVAC['primary_sat']
    building_HVAC_schedule = schedulesHVAC['hvac']
    building_ventilation_schedule = schedulesHVAC['ventilation']
    make_hot_water_plant = false
    unless schedulesHVAC['hot_water'].nil?
      hot_water_setpoint_schedule = schedulesHVAC['hot_water']
      make_hot_water_plant = true
    end
    make_chilled_water_plant = false
    unless schedulesHVAC['chilled_water'].nil?
      chilled_water_setpoint_schedule = schedulesHVAC['chilled_water']
      make_chilled_water_plant = true
    end
    make_radiant_hot_water_plant = false
    unless schedulesHVAC['radiant_hot_water'].nil?
      radiant_hot_water_setpoint_schedule = schedulesHVAC['radiant_hot_water']
      make_radiant_hot_water_plant = true
    end
    make_radiant_chilled_water_plant = false
    unless schedulesHVAC['radiant_chilled_water'].nil?
      radiant_chilled_water_setpoint_schedule = schedulesHVAC['radiant_chilled_water']
      make_radiant_chilled_water_plant = true
    end
    unless schedulesHVAC['hp_loop'].nil?
      heat_pump_loop_setpoint_schedule = schedulesHVAC['hp_loop']
    end
    unless schedulesHVAC['hp_loop_cooling'].nil?
      heat_pump_loop_cooling_setpoint_schedule = schedulesHVAC['hp_loop_cooling']
    end
    unless schedulesHVAC['hp_loop_heating'].nil?
      heat_pump_loop_heating_setpoint_schedule = schedulesHVAC['hp_loop_heating']
    end
    unless schedulesHVAC['mean_radiant_heating'].nil?
      mean_radiant_heating_setpoint_schedule = schedulesHVAC['mean_radiant_heating']
    end
    unless schedulesHVAC['mean_radiant_cooling'].nil?
      mean_radiant_cooling_setpoint_schedule = schedulesHVAC['mean_radiant_cooling']
    end
    ### END ASSIGN HVAC SCHEDULES

    # START REMOVE EQUIPMENT
    options = {}
    options['zonesPrimary'] = zonesPrimary
    if options['zonesPrimary'].empty?
      runner.registerInfo('User did not pick any zones to be added to VRF system, no changes to the model were made.')
    else
      OsLib_HVAC_zedg_vrf.removeEquipment(model, runner, options)
    end
    ### END REMOVE EQUIPMENT

    ### START CREATE NEW PLANTS
    # create new plants
    # hot water plant
    if make_hot_water_plant
      hot_water_plant = OsLib_HVAC_zedg_vrf.createHotWaterPlant(model, runner, hot_water_setpoint_schedule, 'Hot Water', parameters)
    end
    # chilled water plant
    if make_chilled_water_plant
      chilled_water_plant = OsLib_HVAC_zedg_vrf.createChilledWaterPlant(model, runner, chilled_water_setpoint_schedule, 'Chilled Water', chillerType)
    end
    # radiant hot water plant
    if make_radiant_hot_water_plant
      radiant_hot_water_plant = OsLib_HVAC_zedg_vrf.createHotWaterPlant(model, runner, radiant_hot_water_setpoint_schedule, 'Radiant Hot Water', parameters)
    end
    # chilled water plant
    if make_radiant_chilled_water_plant
      radiant_chilled_water_plant = OsLib_HVAC_zedg_vrf.createChilledWaterPlant(model, runner, radiant_chilled_water_setpoint_schedule, 'Radiant Chilled Water', radiantChillerType)
    end
    # condenser loop
    # need condenser loop if there is a water-cooled chiller or if there is a water source heat pump loop or a water cooled VRF condenser
    options = {}
    options['zonesPrimary'] = zonesPrimary
    options['zoneHVAC'] = zoneHVAC
    if zoneHVAC.include?('SHP') || (zoneHVAC == 'VRF') && (parameters['vrfCondenserType'] == 'WaterCooled')
      options['loop_setpoint_schedule'] = heat_pump_loop_setpoint_schedule
      options['cooling_setpoint_schedule'] = heat_pump_loop_cooling_setpoint_schedule
      options['heating_setpoint_schedule'] = heat_pump_loop_heating_setpoint_schedule
      runner.registerInfo('yes, loop schedule created')
    end
    if parameters['vrfCondenserType'] == 'WaterCooled'
      condenserLoops = OsLib_HVAC_zedg_vrf.createCondenserLoop(model, runner, options, parameters)
    else
      condenserLoops = {}
      end
    unless condenserLoops['condenser_loop'].nil?
      condenser_loop = condenserLoops['condenser_loop']
    end
    unless condenserLoops['heat_pump_loop'].nil?
      heat_pump_loop = condenserLoops['heat_pump_loop']
      runner.registerInfo('vrf condenser loop is created')
    end
    ### END CREATE NEW PLANTS

    ### START CREATE PRIMARY AIRLOOPS
    # populate inputs hash for create primary airloops method
    options = {}
    options['zonesPrimary'] = zonesPrimary
    options['primaryHVAC'] = primaryHVAC
    options['zoneHVAC'] = zoneHVAC
    if primaryHVAC['doas']
      options['hvac_schedule'] = building_ventilation_schedule
      options['ventilation_schedule'] = building_ventilation_schedule
    else
      # primary HVAC is multizone VAV
      if zoneHVAC == 'DualDuct'
        # primary system is a multizone VAV that cools only (primary system ventilation schedule is set to always off; hvac set to always on)
        options['hvac_schedule'] = model.alwaysOnDiscreteSchedule
      else
        # primary system is multizone VAV that cools and ventilates
        options['hvac_schedule'] = building_HVAC_schedule
        options['ventilation_schedule'] = building_ventilation_schedule
      end
    end
    options['primary_sat_schedule'] = primary_SAT_schedule
    if make_hot_water_plant
      options['hot_water_plant'] = hot_water_plant
    end
    if make_chilled_water_plant
      options['chilled_water_plant'] = chilled_water_plant
    end
    primary_airloops = OsLib_HVAC_zedg_vrf.createPrimaryAirLoops(model, runner, options, parameters)
    ### END CREATE PRIMARY AIRLOOPS
    if zoneHVAC.include? 'VRF'
      options['heat_pump_loop'] = heat_pump_loop
    end

    # added in custom code to load components to be used by createVRFAirConditioners
    files = Dir.entries("#{File.dirname(__FILE__)}/resources/")
    files.each do |new_object|
      next if !new_object.include?('.osc')

      # load the osc file
      new_object_path = OpenStudio::Path.new("#{File.dirname(__FILE__)}/resources/#{new_object}")
      new_object_file = OpenStudio::IdfFile.load(new_object_path)

      if new_object_file.empty?
        runner.registerError("Unable to find the file #{new_object}.osc")
        return false
      else
        new_object_file = new_object_file.get
      end

      vt = OpenStudio::OSVersion::VersionTranslator.new
      new_objectComponent = vt.loadComponent(OpenStudio::Path.new(new_object_path))
      if new_objectComponent.empty?
        runner.registerError("Cannot load new_object component '#{new_object_file}'")
        return false
      else
        object = new_objectComponent.get.primaryObject
        componentData = model.insertComponent(new_objectComponent.get)
        if componentData.empty?
          runner.registerError("Failed to insert new_object component '#{new_object_file}' into model")
          return false
        else
          new_new_object = componentData.get.primaryComponentObject
          runner.registerInfo("Added #{new_new_object.name} into model")

          # add to options hash
          if new_new_object.to_AirConditionerVariableRefrigerantFlow.is_initialized
            options['vrf_ac'] = new_new_object
          elsif new_new_object.to_ZoneHVACTerminalUnitVariableRefrigerantFlow.is_initialized
            options['vrf_terminal'] = new_new_object
          else
            runner.regsiterError('Unexpected object type')
            return false
          end

        end
      end
    end

    vrf_airconditioners = OsLib_HVAC_zedg_vrf.createVRFAirConditioners(model, runner, options, parameters)

    ### START CREATE SECONDARY AIRLOOPS
    # populate inputs hash for create primary airloops method
    options = {}
    options['zonesSecondary'] = zonesSecondary
    options['secondaryHVAC'] = secondaryHVAC
    options['hvac_schedule'] = building_HVAC_schedule
    options['ventilation_schedule'] = building_ventilation_schedule
    if make_hot_water_plant
      options['hot_water_plant'] = hot_water_plant
    end
    if make_chilled_water_plant
      options['chilled_water_plant'] = chilled_water_plant
    end
    # secondary_airloops = OsLib_HVAC_zedg_vrf.createSecondaryAirLoops(model, runner, options)
    ### END CREATE SECONDARY AIRLOOPS

    ### START ASSIGN PLENUMS
    options = { 'zonesPrimary' => zonesPrimary, 'zonesPlenum' => zonesPlenum }
    zone_plenum_hash = OsLib_HVAC_zedg_vrf.validateAndAddPlenumZonesToSystem(model, runner, options)
    ### END ASSIGN PLENUMS

    ### START CREATE PRIMARY ZONE EQUIPMENT
    options = {}
    options['zonesPrimary'] = zonesPrimary
    options['zoneHVAC'] = zoneHVAC
    if make_hot_water_plant
      options['hot_water_plant'] = hot_water_plant
    end
    if make_chilled_water_plant
      options['chilled_water_plant'] = chilled_water_plant
    end
    if zoneHVAC.include?('SHP') || (zoneHVAC == 'VRF')
      options['heat_pump_loop'] = heat_pump_loop
    end
    if zoneHVAC == 'DualDuct'
      options['ventilation_schedule'] = building_ventilation_schedule
    end
    if zoneHVAC == 'Radiant'
      options['radiant_hot_water_plant'] = radiant_hot_water_plant
      options['radiant_chilled_water_plant'] = radiant_chilled_water_plant
      options['mean_radiant_heating_setpoint_schedule'] = mean_radiant_heating_setpoint_schedule
      options['mean_radiant_cooling_setpoint_schedule'] = mean_radiant_cooling_setpoint_schedule
    end
    OsLib_HVAC_zedg_vrf.createPrimaryZoneEquipment(model, runner, options, parameters)
    ### END CREATE PRIMARY ZONE EQUIPMENT

    # START ADD DCV
    options = {}
    unless zoneHVAC == 'DualDuct'
      options['primary_airloops'] = primary_airloops
    end
    # options["secondary_airloops"] = secondary_airloops
    options['allHVAC'] = allHVAC
    OsLib_HVAC_zedg_vrf.addDCV(model, runner, options)
    # END ADD DCV

    # add in lifecycle costs
    expected_life = 25
    years_until_costs_start = 0
    costHVAC = costTotalHVACSystem
    lcc_mat = OpenStudio::Model::LifeCycleCost.createLifeCycleCost('HVAC System', model.getBuilding, costHVAC, 'CostPerEach', 'Construction', expected_life, years_until_costs_start).get

    # added in custom code to load components to be used by createVRFAirConditioners
    base_vrf_ac = nil
    base_vrf_terminalUnit = nil
    files = Dir.entries("#{File.dirname(__FILE__)}/resources/")
    files.each do |new_object|
      next if !new_object.include?('.osc')
      runner.registerInfo("Importing component from #{new_object}")

      # load the osc file
      new_object_path = OpenStudio::Path.new("#{File.dirname(__FILE__)}/resources/#{new_object}")
      new_object_file = OpenStudio::IdfFile.load(new_object_path)

      if new_object_file.empty?
        runner.registerError("Unable to find the file #{new_object}.osc")
        return false
      else
        new_object_file = new_object_file.get
      end

      vt = OpenStudio::OSVersion::VersionTranslator.new
      new_objectComponent = vt.loadComponent(OpenStudio::Path.new(new_object_path))
      if new_objectComponent.empty?
        runner.registerError("Cannot load new_object component '#{new_object_file}'")
        return false
      else
        object = new_objectComponent.get.primaryObject
        componentData = model.insertComponent(new_objectComponent.get)
        if componentData.empty?
          runner.registerError("Failed to insert new_object component '#{new_object_file}' into model")
          return false
        else
          new_new_object = componentData.get.primaryComponentObject
          runner.registerInfo("Added #{new_new_object.name} into model")

          # add to options hash
          if new_new_object.to_AirConditionerVariableRefrigerantFlow.is_initialized
            base_vrf_ac = new_new_object
          elsif new_new_object.to_ZoneHVACTerminalUnitVariableRefrigerantFlow.is_initialized
            base_vrf_terminalUnit = new_new_object
          else
            runner.regsiterError('Unexpected object type')
            return false
          end

        end
      end
    end

    # add and alter base vrf acbase units in model
    base_vrf_ac = base_vrf_ac.to_AirConditionerVariableRefrigerantFlow.get
    base_vrf_ac.autosizeRatedTotalCoolingCapacity
    base_vrf_ac.autosizeRatedTotalHeatingCapacity
    base_vrf_ac.setHeatPumpWasteHeatRecovery(true)

    # add and alter base vrf terminal
    base_vrf_terminalUnit = base_vrf_terminalUnit.to_ZoneHVACTerminalUnitVariableRefrigerantFlow.get
    base_vrf_terminalUnit.autosizeSupplyAirFlowRateDuringCoolingOperation
    base_vrf_terminalUnit.autosizeSupplyAirFlowRateDuringHeatingOperation
    base_vrf_terminalUnit.setSupplyAirFanOperatingModeSchedule(model.alwaysOffDiscreteSchedule)
    # don't set outdoor air flow rates to 0 since used in place of DOAS

    # get coils
    os_version = OpenStudio::VersionString.new(OpenStudio.openStudioVersion)
    min_version_feature1 = OpenStudio::VersionString.new('2.3.1')
    if os_version >= min_version_feature1
      if base_vrf_terminalUnit.coolingCoil.is_initialized
        vrf_clg_coil = base_vrf_terminalUnit.coolingCoil.get
      else
        runner.registerWarning("Didn't find expected cooling coil for #{base_vrf_terminalUnit.name}")
      end
      if base_vrf_terminalUnit.heatingCoil.is_initialized
        vrf_htg_coil = base_vrf_terminalUnit.heatingCoil.get
      else
        runner.registerWarning("Didn't find expected heating coil for #{base_vrf_terminalUnit.name}")
      end
    else
      vrf_clg_coil = base_vrf_terminalUnit.coolingCoil
      vrf_htg_coil = base_vrf_terminalUnit.heatingCoil
    end

    # alter coils and fans
    vrf_clg_coil.autosizeRatedTotalCoolingCapacity
    vrf_clg_coil.autosizeRatedAirFlowRate
    vrf_clg_coil.autosizeRatedSensibleHeatRatio
    vrf_htg_coil.autosizeRatedTotalHeatingCapacity
    vrf_htg_coil.autosizeRatedAirFlowRate
    vrf_fan = base_vrf_terminalUnit.supplyAirFan.to_FanOnOff.get
    vrf_fan.autosizeMaximumFlowRate
    vrf_fan.setPressureRise(498)
    vrf_fan.setMotorEfficiency(0.85)

    # loop through zones assing HVAC
    zonesSecondary.each do |zone|
      runner.registerInfo("Adding VRF to #{zone.name}")

      # clone vrf_ac
      vrfAirConditioner = base_vrf_ac.clone(model).to_AirConditionerVariableRefrigerantFlow.get

      # construct Terminal VRF Unit
      vrf_terminalUnit = base_vrf_terminalUnit.clone(model).to_ZoneHVACTerminalUnitVariableRefrigerantFlow.get

      vrf_terminalUnit.addToThermalZone(zone)
      vrfAirConditioner.addTerminal(vrf_terminalUnit)
    end

    # remove base vrf units that were cloned into stories and spaces
    base_vrf_ac.remove
    base_vrf_terminalUnit.remove

    ### START REPORT FINAL CONDITIONS
    OsLib_HVAC_zedg_vrf.reportConditions(model, runner, 'final')
    ### END REPORT FINAL CONDITIONS

    return true
  end
end

# this allows the measure to be used by the application
ZEDGVRFWithDOAS.new.registerWithApplication