import logging, os
from functools import wraps

from flask import Flask, request
app = Flask(__name__)

log = logging.getLogger('werkzeug')
#~ log.setLevel(logging.ERROR)
app.logger.disabled = True
log.disabled = True

log = logging.getLogger()
log.setLevel(logging.INFO)

streamhandler = logging.StreamHandler()
streamhandler.setFormatter(logging.Formatter("%(asctime)s %(levelname)s %(message)s",'%Y-%m-%d %X'))
log.addHandler(streamhandler)


from statsd import StatsClient
statsd_host = os.environ.get('STATSD_HOST', 'host.docker.internal')
log.info('using statsd at %s:%s' % (statsd_host, 8125))
statsd = StatsClient(statsd_host, 8125)

def login_required(f):
    @wraps(f)
    def wrapped_view(**kwargs):
        auth = request.authorization
        if not (auth and auth.username == 'xxx' and auth.password == '123'):
            return ('Unauthorized', 401, {
                'WWW-Authenticate': 'Basic realm="Login Required"'
            })

        return f(**kwargs)

    return wrapped_view


OLD_VALUES = {}

@app.route("/api")
@login_required
def api():
    try:
        args = request.args
        name = args['name'].lower()
        # XXX: domoticz doesnt send spaced named (is buggy)
        # this was only a failed hack, but let's keep it
        name = name.replace(' ', '-')

        # ugly fugly
        name = name.replace('ü', 'ue').replace('ä', 'ae').replace('ö', 'oe')
        name = name.replace('ã¼', 'ue').replace('ã¶', 'oe').replace('ã¤', 'ae')

        type = args['type']
        value = args['value']

        #~ log.info('%r' % args)
        if type == 'power_instant':
            v = int(float(value))
            log.debug('%s %s: %s' % (type, name, v))
            statsd.gauge('domo.%s.power_instant' % name, v)
        elif type == 'temp':
            v = float(value)
            log.debug('%s %s: %s' % (type, name, v))
            statsd.gauge('domo.%s.temp' % name, v)

        elif type == 'power_usage':
            v = int(float(value))
            old_v = int(float(OLD_VALUES.get((name, type), v)))
            delta = v - old_v
            if delta > 100:
                log.warn('ignore: %s %s: %s' % (type, name, delta))
            elif delta > 0:
                log.debug('%s %s: %s' % (type, name, delta))
                statsd.incr('domo.%s.power_usage.count' % name, delta)

        OLD_VALUES[(name, type)] = value
        return ''
    except Exception:
        log.exception('arror during api')

@app.route("/")
def index():
    return '<br/>'.join('%s %s: %s' % (name, type, v) for (name, type), v in OLD_VALUES.items())

if __name__ == '__main__':
    log.info('startup flask')
    app.run(debug=False, host='0.0.0.0', port=80)