#!/usr/bin/env python

# carrel2graph.py - given a few configurations, output a network graph

# Eric Lease Morgan <emorgan@nd.edu>
# (c) University of Notre Dame; distributed under a GNU Public License

# April 12, 2024 - first cut; illustrating the functionality of HTTP content negotiation


# configure
CARREL   = 'subject-americanWitAndHumorPictorial-gutenberg'
HOST     = 'http://carrels.distantreader.org'
MIMETYPE = 'application/gml'

# require
from io                import StringIO
from matplotlib.pyplot import show
from networkx          import parse_gml, draw
from requests          import get

# build a request, submit it, and get the text of the response; get the GML
url     = HOST + '/' + CARREL
headers = { 'Accept':MIMETYPE }
gml     = get( url, headers=headers ).text

# initialize the graph, draw it, and show it
with StringIO( gml ) as handle : G = parse_gml( handle.read() )
draw( G, with_labels=True )
show()

# done
exit()