import clr
clr.AddReference("RevitAPI")
clr.AddReference("System.Core")
import System
clr.ImportExtensions(System.Linq)
from Autodesk.Revit.DB import *
clr.AddReference("RevitServices")
import RevitServices
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager
doc = DocumentManager.Instance.CurrentDBDocument
TransactionManager.Instance.EnsureInTransaction(doc)

#Define functions to convert units
def T_Convert(l):
	th1=[]
	unit1= DisplayUnitType.DUT_WATTS_PER_METER_KELVIN
	th1.append(UnitUtils.ConvertToInternalUnits(l,unit1))
	return th1[0]
def D_Convert(l):
	th1=[]
	unit2 = DisplayUnitType.DUT_KILOGRAMS_PER_CUBIC_METER
	th1.append(UnitUtils.ConvertToInternalUnits(l,unit2))
	return th1[0]
	
for n,th,d in zip(IN[0],IN[1],IN[2]):
	if Material.IsNameUnique(doc,n):
#Create new material 
		new = Material.Create(doc, n);
		material = doc.GetElement(new);
		thAsset = ThermalAsset(n, ThermalMaterialType.Solid);
		thAsset.Name = n;
		thAsset.Behavior = StructuralBehavior.Isotropic;
		thAsset.ThermalConductivity = T_Convert(th);
		SpecificHeatOfVaporization = 0.0;
		thAsset.Porosity =0.0;
		thAsset.Density = D_Convert(d);
		thAsset.Emissivity = 0.0;
		thAsset.Reflectivity = 0.0;
		thAsset.Permeability = 0.0;
		thAsset.ElectricalResistivity = 0.0;
		thAsset.Compressibility = 0.0;
		pse = PropertySetElement.Create(doc, thAsset);
		material.SetMaterialAspectByPropertySet(MaterialAspect.Thermal, pse.Id);
#Update existing material 
	else:
		TransactionManager.Instance.EnsureInTransaction(doc)
		namePar = ParameterValueProvider(ElementId(BuiltInParameter.MATERIAL_NAME))
		fRule = FilterStringRule(namePar,FilterStringEquals(),n, True)
		filter = ElementParameterFilter(fRule)
		exist_mat = FilteredElementCollector(doc).OfClass(Material).WherePasses(filter).ToElements()
		for em in exist_mat:
			TH=doc.GetElement(em.ThermalAssetId).LookupParameter("Thermal Conductivity")
			DEN=doc.GetElement(em.ThermalAssetId).LookupParameter("Density")
			new_th=TH.Set(T_Convert(th))
			new_den=TH.Set(D_Convert(d))
		
			TransactionManager.Instance.TransactionTaskDone()