# Copyright © 2016-2022 Jakub Wilk <jwilk@jwilk.net>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the “Software”), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# SOFTWARE.

'''
English articles
'''

from lib import phonetics

accents = str.join('', phonetics.accents)

def choose_art(phonemes):
    '''
    choose correct article for the phonemes:
    return "a" or "an" or NotImplemented
    '''
    try:
        p = phonemes.strip(accents)[0]
    except IndexError:
        return NotImplemented
    if p in phonetics.consonants:
        return 'a'
    elif p in phonetics.vowels:
        return 'an'
    else:
        return NotImplemented

__all__ = ['choose_art']

# vim:ts=4 sts=4 sw=4 et
