###
# Copyright (c) 2021, Georg Pfuetzenreuter
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
#   * Redistributions of source code must retain the above copyright notice,
#     this list of conditions, and the following disclaimer.
#   * Redistributions in binary form must reproduce the above copyright notice,
#     this list of conditions, and the following disclaimer in the
#     documentation and/or other materials provided with the distribution.
#   * Neither the name of the author of this software nor the name of
#     contributors to this software may be used to endorse or promote products
#     derived from this software without specific prior written consent.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.

###

import re
import requests
import secrets
import string
from supybot import utils, plugins, ircutils, callbacks
from supybot.commands import *
from supybot.ircmsgs import nick
try:
    from supybot.i18n import PluginInternationalization
    _ = PluginInternationalization('Keycloak')
except ImportError:
    # Placeholder that allows to run the plugin on a bot
    # without the i18n module
    _ = lambda x: x


class Keycloak(callbacks.Plugin):
    """Interfaces with Keycloak SSO."""
    threaded = True

    def register(self, irc, msg, args, email):
        """<email>
        registers an account with your username and the specified email address"""

        server = self.registryValue('backend.server')
        realm = self.registryValue('backend.realm')
        tokenurl = self.registryValue('backend.token')
        usererr = self.registryValue('replies.error')

        try:
            tokendl = requests.get(tokenurl)
            tokendata = tokendl.json()
            token = tokendata['access_token']
            url = server + '/auth/admin/realms/' + realm + '/users'
            if re.match(r"[^@]+@[^@]+\.[^@]+", email):
                payload = {
                "firstName": "Foo",
                "lastName": "Bar",
                "email": email,
                "enabled": "true",
                "username": msg.nick,
                "credentials": [{"type": "password", "value": "test123", "temporary": "true"}]
                }
                response = requests.post(
                url,
                headers = {'Content-Type': 'application/json', 'Authorization': 'Bearer ' + token},
                json = payload
                )
                print("Keycloak: HTTP Status ", response.status_code)
                if response.text:
                    print("Keycloak: Response Text: ", response.text)
                print("Keycloak: Response JSON: ", response.json())
                status = response.status_code
                #To-Do: figure out why this needs to bere instead of being fed from the usererr config variable defined above
                #usererr = irc.error("Something went wrong. Please contact an administrator.")
                if status == 201:
                    print(" SSO User " + msg.nick + " created.")
                    irc.reply("OK, please log in and change your password NOW.")
                if status == 400:
                    print("ERROR: Keycloak indicated that the request is invalid.")
                    irc.error(usererr)
                if status == 401:
                    print("ERROR: Fix your Keycloak API credentials and/or client roles, doh.")
                    irc.error(usererr)
                if status == 403:
                    print("ERROR: Keycloak indicated that the authorization provided is not enough to access the resource.")
                    irc.error(usererr)
                if status == 404:
                    print("ERROR: Keycloak indicated that the requested resource does not exist.")
                    irc.error(usererr)
                if status == 409:
                    print("ERROR: Keycloak indicated that the resource already exists or \"some other coonflict when processing the request\" occured.")
                    irc.reply("Your username seems to already be registerd.")
                if status == 415:
                    print("ERROR: Keycloak indicated that the requested media type is not supported.")
                    irc.error(usererr)
                if status == 500:
                    print("ERROR: Keycloak indicated that the server could not fullfill the request due to \"some unexpected error \".")
                    irc.error(usererr)
            else:
                irc.error("Is that a valid email address?")
        except:
            print("ERROR: Keycloak token could not be installed.")
            irc.error(usererr)

    register = wrap(register, ['anything'])



Class = Keycloak


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