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# see the URL below for information on how to write OpenStudio measures
# http://openstudio.nrel.gov/openstudio-measure-writing-guide

# see the URL below for information on using life cycle cost objects in OpenStudio
# http://openstudio.nrel.gov/openstudio-life-cycle-examples

# see the URL below for access to C++ documentation on model objects (click on "model" in the main window to view model objects)
# http://openstudio.nrel.gov/sites/openstudio.nrel.gov/files/nv_data/cpp_documentation_it/model/html/namespaces.html

# start the measure
class SurfaceMatching < 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 'SurfaceMatching'
  end

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

    # make an argument to remove existing costs
    intersect_surfaces = OpenStudio::Measure::OSArgument.makeBoolArgument('intersect_surfaces', true)
    intersect_surfaces.setDisplayName('Intersect Surfaces Before Matching?')
    intersect_surfaces.setDefaultValue(true)
    args << intersect_surfaces

    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

    # assign the user inputs to variables
    intersect_surfaces = runner.getBoolArgumentValue('intersect_surfaces', user_arguments)

    # matched surface counter
    initialMatchedSurfaceCounter = 0
    surfaces = model.getSurfaces
    surfaces.each do |surface|
      if surface.outsideBoundaryCondition == 'Surface'
        next if !surface.adjacentSurface.is_initialized # don't count as matched if boundary condition is right but no matched object

        initialMatchedSurfaceCounter += 1
      end
    end

    # reporting initial condition of model
    runner.registerInitialCondition("The initial model has #{initialMatchedSurfaceCounter} matched surfaces.")

    # put all of the spaces in the model into a vector
    spaces = OpenStudio::Model::SpaceVector.new
    model.getSpaces.each do |space|
      spaces << space
    end

    # intersect surfaces
    if intersect_surfaces
      OpenStudio::Model.intersectSurfaces(spaces)
      runner.registerInfo('Intersecting surfaces, this will create additional geometry.')
    end

    # match surfaces for each space in the vector
    OpenStudio::Model.matchSurfaces(spaces)
    runner.registerInfo('Matching surfaces..')

    # matched surface counter
    finalMatchedSurfaceCounter = 0
    surfaces.each do |surface|
      if surface.outsideBoundaryCondition == 'Surface'
        finalMatchedSurfaceCounter += 1
      end
    end

    # reporting final condition of model
    runner.registerFinalCondition("The final model has #{finalMatchedSurfaceCounter} matched surfaces.")

    return true
  end
end

# this allows the measure to be use by the application
SurfaceMatching.new.registerWithApplication