#!/usr/bin/env python
from __future__ import print_function

import os

from glob import glob
from textwrap import dedent

import tecplot
from tecplot.constant import ZoneType

def zone_info(zone):
    """Generate a dict of parameters describing a Zone"""
    info = dict()
    attrs = '''
        name
        zone_type
        strand
        num_elements
        num_variables
        dimensions
        num_points_per_element
        num_faces
        num_points
        rank
    '''.split()
    for attr in attrs:
        info[attr] = getattr(zone, attr, None)
    return info

examples_dir = tecplot.session.tecplot_examples_directory()

# print info for first three plt files found under the SimpleData directory
for infile in glob(os.path.join(examples_dir, 'SimpleData', '*.plt'))[:3]:

    print(infile)
    tecplot.data.load_tecplot(infile)
    ds = tecplot.active_frame().dataset

    # print first three zones in this dataset
    for zone in list(ds.zones())[:3]:

        info = zone_info(zone)
        print(dedent('''\
        Name: {name}
        Type: {zone_type}
        Strand: {strand}
        Elems: {num_elements}
        Points: {num_points}
        Variables: {num_variables}'''.format(**info)))
        if zone.zone_type == ZoneType.Ordered:
            print(dedent('''\
            Dimensions: {dimensions}
            Points/Elem: {num_points_per_element}'''.format(**info)))
        elif zone.zone_type in [ZoneType.FEPolygon,
                                ZoneType.FEPolyhedron]:
            print(dedent('''\
            Faces: {num_faces}
            Rank: {rank}'''.format(**info)))
        else:
            print(dedent('''\
            Rank: {rank}
            Points/Elem: {num_points_per_element}'''.format(**info)))
        print('\n')
