###############################################################################
#   
#    This file is part of the Utopia Documents application.
#        Copyright (c) 2008-2017 Lost Island Labs
#            <info@utopiadocs.com>
#    
#    Utopia Documents is free software: you can redistribute it and/or modify
#    it under the terms of the GNU GENERAL PUBLIC LICENSE VERSION 3 as
#    published by the Free Software Foundation.
#    
#    Utopia Documents is distributed in the hope that it will be useful, but
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#    permission to link the code of portions of this program with the OpenSSL
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#    exception, you may extend this exception to your version of the file(s),
#    but you are not obligated to do so. If you do not wish to do so, delete
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#    You should have received a copy of the GNU General Public License
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#   
###############################################################################

import utopialib.eutils

from lxml import etree

def fetch(pmcid):
    return utopialib.eutils.efetch(id=pmcid, db='pmc')

def search(title):
    data = []
    # FIXME How best to search PMC for a title?
    return data

def identify(id, id_type):
    results = utopialib.eutils.esearch(term='"{0}"[{1}]'.format(id, id_type.upper()), db='pmc', retmax=1)
    parser = etree.XMLParser(ns_clean=True, recover=True)
    ids = etree.fromstring(results, parser).xpath('//Id')
    if len(ids) == 1:
        return ids[0].text
