########################################
# DO NOT CHANGE ANYTHING BELOW THIS LINE
########################################

import sys

from boardgamegeek.api import BoardGameGeek

bgg = BoardGameGeek()


def compare(users, status):
    master_list = []
    for user in users:
        collection = bgg.collection(user_name=user)
        if status == 'all':
            master_list.append([item.name for item in collection.items])
        else:
            master_list.append([item.name for item in collection.items if getattr(item, status)])
    return [val for val in master_list[0] if val in master_list[1]]


if __name__ == '__main__':
    options = [
        'all',
        'for_trade',
        'owned',
        'prev_owned',
        'want',
        'wishlist',
    ]

    users = sys.argv[1:3]
    # if there are more than 2 args, and the 3rd arg is valid
    if len(sys.argv[1:4]) > 2 and sys.argv[3] in options:
        status = sys.argv[3]
    # else default to only owned games
    else:
        status = 'owned'

    try:
        print compare(users, status)
    except Exception, e:
        print "An error occurred, please try again."