#!/usr/bin/env python3
'''
Extract all profile pictures from a Contacts VCards file (.vcf)
'''
import os
import sys
from base64 import b64decode
from argparse import ArgumentParser, FileType

cli = ArgumentParser(description=__doc__)
cli.add_argument('input', type=FileType('r'), metavar='infile.vcf',
                 help='VCard input file.')
cli.add_argument('outdir', type=str, help='Output directory.')
args = cli.parse_args()

# check input args
if not os.path.isdir(os.path.dirname(args.outdir) or os.curdir):
    print('Output parent directory does not exist.', file=sys.stderr)
    exit(1)

os.makedirs(args.outdir, exist_ok=True)

# perform export
c1 = 0
c2 = 0
name = ''
img = ''
collect = False
for line in args.input.readlines():
    line = line.rstrip()
    if line == 'BEGIN:VCARD':
        c1 += 1
        name = ''
        img = ''
        collect = False
    elif line.startswith('FN:'):
        name = line.split(':', 1)[1]
    elif line.startswith('PHOTO;'):
        img = line.split(':', 1)[1]
        collect = True
    elif collect:
        if line[0] == ' ':
            img += line[1:]
        else:
            collect = False
    if line == 'END:VCARD' and img:
        c2 += 1
        name = name.replace('\\,', ',').replace('\\;', ';').replace(
            '/', '-')
        with open(os.path.join(args.outdir, name + '.jpg'), 'wb') as fw:
            fw.write(b64decode(img))

print(c1, 'contacts.', c2, 'images.')