# standard imports
import os
import sys
import logging
import urllib.request

logg = logging.getLogger(__name__)


class OutputWriter:

    def __init__(self, *args, **kwargs):
        pass

    def write(self, k, v):
        raise NotImplementedError()


class StdoutWriter(OutputWriter):

    def write(self, k, v):
        sys.stdout.write('{}\t{}\n'.format(k, v))


class KVWriter(OutputWriter):

    def __init__(self, path=None, *args, **kwargs):
        try:
            os.stat(path)
        except FileNotFoundError:
            os.makedirs(path)
        self.path = path


    def write(self, k, v):
        fp = os.path.join(self.path, str(k))
        logg.debug('path write {} {}'.format(fp, str(v)))
        f = open(fp, 'wb')
        f.write(v)
        f.close()


class HTTPWriter(OutputWriter):

    def __init__(self, path=None, *args, **kwargs):
        super(HTTPWriter, self).__init__(*args, **kwargs)
        self.path = path

  
    def write(self, k, v):
        rq = urllib.request.Request(self.path, method='POST', data=v)
        r = urllib.request.urlopen(rq)
        logg.info('proof submited at {}'.format(r.read))