#!/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('--min_cell_area', dest='min_cell_area', type=float, help='Minimum cell area')
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 a ShapeManager for loading the input.
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)

# Coarsen the shape if requested.
vtk_poly_data = shape_mgr.coarsenVtkPolyData(vtk_poly_data, min_cell_area=args.min_cell_area)

# 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=vtk_poly_data, file_name=tmp_output_path, file_type=output_file_type)
shutil.move(tmp_output_path, args.output)