walletname.py

__author__ = 'mdavid'

import json
import re
import requests

from blockexplorer.settings import WNS_URL_BASE

WALLET_NAME_RE = re.compile('^([0-9a-z_][0-9a-z\-_]*\.)+[a-z]{2,}$', re.IGNORECASE)
TIMEOUT_IN_SECONDS = 20

def is_valid_wallet_name(string):

    return WALLET_NAME_RE.match(string)

def lookup_wallet_name(wallet_name, currency='btc', wns_base=WNS_URL_BASE):

    assert is_valid_wallet_name(wallet_name)

    try:
        currency = 'dgc' if currency == 'doge' else currency
        r = requests.get('%s/%s/%s' % (wns_base, wallet_name, currency), verify=True, timeout=TIMEOUT_IN_SECONDS)
        rdict = json.loads(r.text)
        if rdict.get('success', False) and rdict.get('wallet_name','') == wallet_name and rdict.get('currency','') == currency:
            return rdict.get('wallet_address')
    except:
        pass

    return None