#!/usr/bin/env python
import argparse
import shutil

import icqsol_utils

# Parse Command Line.
parser = argparse.ArgumentParser()
parser.add_argument('--input', dest='input', help='Shape dataset selected from history')
parser.add_argument('--input_file_format_and_type', dest='input_file_format_and_type', help='Input file format and type')
parser.add_argument('--input_dataset_type', dest='input_dataset_type', help='Input dataset_type')
parser.add_argument('--input_potential_name', dest='input_potential_name', default='', help='Input surface potential field name.')
parser.add_argument('--output_jump_electric_field_name', dest='output_jump_electric_field_name', default='jump_normal_electric_field', help='Set the name of the output field name.')
parser.add_argument('--output', dest='output', help='Output dataset')
parser.add_argument('--output_vtk_type', dest='output_vtk_type', help='Output VTK type')

args = parser.parse_args()

input_format, input_file_type = icqsol_utils.get_format_and_type(args.input_file_format_and_type)
tmp_dir = icqsol_utils.get_temp_dir()

# Instantiate the shape manager.
shape_mgr = icqsol_utils.get_shape_manager(input_format, args.input_dataset_type)

# Get the vtk polydata from the input dataset.
vtk_poly_data = shape_mgr.loadAsVtkPolyData(args.input)

# Instantiate the Laplace solver.
solver = icqsol_utils.get_laplace_solver(vtk_poly_data)

# Set the output field names.
solver.setResponseFieldName(args.output_jump_electric_field_name)

# In place operation, vtk_poly_data will be modified.
solver.setSourceFieldName(args.input_potential_name)
normalEJump = solver.computeResponseField()
surfIntegral = shape_mgr.integrateSurfaceField(solver.getVtkPolyData(), args.output_jump_electric_field_name)
print 'Surface integral of normal electric field jump: {0}'.format(surfIntegral)
minVal, maxVal = shape_mgr.getFieldRange(solver.getVtkPolyData(), args.output_jump_electric_field_name)
print 'min/max values of normal electric field jump: {0}/{1}'.format(minVal, maxVal)

# Define the output file format and type (the output_format can only be 'vtk').
output_format, output_file_type = icqsol_utils.get_format_and_type(args.output_vtk_type)
tmp_output_path = icqsol_utils.get_temporary_file_path(tmp_dir, output_format)

# Make sure the ShapeManager's writer is vtk.
shape_mgr.setWriter(file_format=icqsol_utils.VTK, vtk_dataset_type=icqsol_utils.POLYDATA)

# Save the output.
shape_mgr.saveVtkPolyData(vtk_poly_data=solver.getVtkPolyData(), file_name=tmp_output_path, file_type=output_file_type)
shutil.move(tmp_output_path, args.output)