 import pydpf
from pydpf.core import Model, Workflow
from pydpf.fields import Field
from pydpf.operators import Operator

result_file = "result.fim"
model = Model(result_file)
node_ids = model.get_node_ids()
min_nodes_for_volume = len(node_ids)

inputs_elements_volume = InputsElementsVolume()
outputs_elements_volume = OutputsElementsVolume()
volume_elements = elements_volume(model, inputs_elements_volume, outputs_elements_volume)

inputs_elemental_volume = InputsElementalVolume()
outputs_elemental_volume = OutputsElementalVolume()
volume_elemental = elemental_volume(model, inputs_elemental_volume, outputs_elemental_volume)

min_volume_elements = model_elements(model, min_nodes_for_volume)

inputs_volume_fraction = InputsVolumeFraction()
outputs_volume_fraction = OutputsVolumeFraction()
volume_fraction_op = volume_fraction(model, min_volume_elements, inputs_volume_fraction, outputs_volume_fraction)

inputs_cyclic_volume = InputsCyclicVolume()
outputs_cyclic_volume = OutputsCyclicVolume()
cyclic_volume_op = cyclic_volume(model, min_volume_elements, inputs_cyclic_volume, outputs_cyclic_volume)

a = Field()
should_average(a)

seqv_volume = volume_fraction * a

inputs_seqv_volume = InputsElementalVolume()
outputs_seqv_volume = OutputsElementalVolume()
seqv_volume_op = elemental_volume(model, min_volume_elements, inputs_seqv_volume, outputs_seqv_volume, seqv_volume)

volume_sum = valueA(seqv_volume_op)

workflow = Workflow()
workflow.add(volume_elements)
workflow.add(volume_elemental)
workflow.add(volume_fraction_op)
workflow.add(cyclic_volume_op)
workflow.add(seqv_volume_op)
workflow.add(volume_sum)

average_stress = volume_sum / volume_fraction_op

plot_field = Operator(average_stress, should_average=should_average, name="Average Stress", colorbar_label="Average Stress (MPa)")
plot_field_cyclic = Operator(average_stress, should_average=should_average, name="Cyclic Average Stress", colorbar_label="Cyclic Average Stress (MPa)")

workflow.add(plot_field)
workflow.add(plot_field_cyclic)
workflow.run()