#!/usr/bin/env python
# -*- coding: utf-8 -*-

import os
import sys
from ConfigParser import ConfigParser
from subprocess import Popen, PIPE, STDOUT


# Place your own settings here
filename = os.path.join(os.environ['HOME'], '.mypwfile.gpg')
pipecmd = ('/usr/bin/xclip',)
decryptcmd = ('/usr/bin/gpg', '-q', '--decrypt', 'FILE')


def make_pwget(filename, pipecmd, decryptcmd):
    def pwget(lookupstr):
        parser = cfgparser_from_command(decryptcmd, filename)
        sections = [x for x in parser.sections()
                    if x.lower().startswith(lookupstr.lower())]
        if sections:
            first = sections[0]
            credentials = [(k, v.strip("\"'"))
                           for k, v in parser.items(first)
                           if k in ('username', 'password')]
            if len(credentials) >= 2:
                print "Found match:", first
                print "Piping to command:", ' '.join(pipecmd)
                pipe_to_command(pipecmd, credentials)
            else:
                print "No username password pair found."
        else:
            print "No matches found."

    return pwget


def pipe_to_command(command, output=None, wait=True):
    for k, v in output:
        if wait:
            print "Press enter to pipe", k
            sys.stdin.read(1)
        p = Popen(command, stdin=PIPE)
        p.communicate(v)


def cfgparser_from_command(command, filename=''):
    if filename:
        cmd = [x if x != 'FILE' else filename for x in command]
    else:
        cmd = command
    cfgparser = ConfigParser()
    process = Popen(cmd, stdout=PIPE, stderr=STDOUT, close_fds=True)
    cfgparser.readfp(process.stdout)
    return cfgparser


if __name__ == '__main__':
    pwget = make_pwget(filename, pipecmd, decryptcmd)
    if len(sys.argv) > 1:
        arg = ' '.join(sys.argv[1:])
        pwget(arg)
    else:
        print """usage: %s ENTRY""" % os.path.basename(sys.argv[0])