import bs4
import flask
import functools
import re
import requests
import time


app = flask.Flask(__name__)


def _cached(f):
    f._cache = None
    f._cache_time = None
    @functools.wraps(f)
    def wrapper(*args, **kwargs):
        if f._cache is None or f._cache_time + 60 < time.time():
            res = f(*args, **kwargs)
            f._cache_time = time.time()
            f._cache = res
            return res
        else:
            return f._cache
    return wrapper


@_cached
def get_stats():
    t = requests.get("http://xpm.syware.de/?a=AT1tRrSHYEBSy9tA24GgHy3qKyDKhfAwys").text
    soup = bs4.BeautifulSoup(t)
    pre = str(soup.body.pre)
    m = re.search(r"([0-9\.]+) [0-9\.]+\t([0-9\.]+) XPM/h", pre)
    speed = float(m.group(2))
    m = re.search(r"([0-9]+)\t([0-9][0-9]\.[0-9][0-9])\. ([0-9][0-9]:[0-9][0-9])\t([0-9\.]+)\t\+([0-9\.]+)\t([0-9\.]+)", pre)
    block, date, time, total, add, balance = m.groups()

    return speed, (date, time, total, add, balance)


@_cached
def get_exchange_rate():
    j = requests.get('https://crypto-trade.com/rfetch/23').json()
    rate = j["values"][-1][2]
    return rate


@app.template_filter('real_money')
def real_money(xpm):
   xpm = float(xpm)
   return '{:.2f} USD'.format(xpm * get_exchange_rate())


MINERS = {}
MINER_TIMEOUT = 120


def get_miners():
    # first, get rid of stale miners
    global MINERS
    to_delete = set()
    for name, miner in MINERS.iteritems():
        if miner['time'] + MINER_TIMEOUT < time.time():
            to_delete.add(name)

    for td in to_delete:
        del MINERS[td]
    return MINERS


@app.route('/report-miner/<name>/<int:threads>')
def view_report_miner(name, threads):
    MINERS[name] = { 'name': name, 'threads': threads,
                     'time': time.time()}
    return flask.jsonify({'status': 'ok'})


@app.route('/')
def view_index():
    speed, (date, time, total, add, balance) = get_stats()
    # hack
    at = '{}.2014 {}'.format(date, time)
    return flask.render_template('status.html', speed=speed, add=add, at=at,
                                 total=total, miners=get_miners())

@app.route('/api')
def view_api():
    speed, (date, time, total, add, balance) = get_stats()
    result = {
        'speed': float(speed),
        'total': float(total),
        'last_share': {
            'time': time,
            'date': date,
            'add': add
        },
        'power_used': '1.21 jiggowats',
    }
    return flask.jsonify(result)


if __name__ == '__main__':
    app.run(debug=True)