##########################################################################
#
# pgAdmin 4 - PostgreSQL Tools
#
# Copyright (C) 2013 - 2018, The pgAdmin Development Team
# This software is released under the PostgreSQL Licence
#
##########################################################################

import config
import string
import random
import os
import re
import getpass


if 'raw_input' in __builtins__:
    input = raw_input
    range = xrange


def user_info():
    if config.SERVER_MODE is False:
        print(u"NOTE: Configuring authentication for DESKTOP mode.")
        email = config.DESKTOP_USER
        p1 = ''.join([
            random.choice(string.ascii_letters + string.digits)
            for n in range(32)
        ])

    else:
        print(u"NOTE: Configuring authentication for SERVER mode.\n")

        if all(value in os.environ for value in
               ['PGADMIN_SETUP_EMAIL', 'PGADMIN_SETUP_PASSWORD']):
            email = ''
            p1 = ''
            if os.environ['PGADMIN_SETUP_EMAIL'] and os.environ[
                    'PGADMIN_SETUP_PASSWORD']:
                email = os.environ['PGADMIN_SETUP_EMAIL']
                p1 = os.environ['PGADMIN_SETUP_PASSWORD']
        else:
            # Prompt the user for their default username and password.
            print(
                u"Enter the email address and password to use for the initial "
                u"pgAdmin user account:\n"
            )

            email_filter = re.compile(
                "^[a-zA-Z0-9.!#$%&'*+\/=?^_`{|}~-]+@[a-zA-Z0-9]"
                "(?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9]"
                "(?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$")

            email = input("Email address: ")
            while email == '' or not email_filter.match(email):
                print(u'Invalid email address. Please try again.')
                email = input("Email address: ")

            def pprompt():
                return getpass.getpass(), getpass.getpass('Retype password:')

            p1, p2 = pprompt()
            while p1 != p2 or len(p1) < 6:
                if p1 != p2:
                    print(u'Passwords do not match. Please try again.')
                else:
                    print(
                        u'Password must be at least 6 characters. '
                        u'Please try again.'
                    )
                p1, p2 = pprompt()
    return email, p1