import socket, irctokens
import requests
import re

def ircregister(username, password, email):
    # define the variables
    d = irctokens.StatefulDecoder()
    e = irctokens.StatefulEncoder()
    s = socket.socket()

    #connecting to the server
    s.connect(("127.0.0.1", 6667))

    #defining the send function with proper formatting
    def _send(line):
        print(f"> {line.format()}")
        e.push(line)
        while e.pending():
            e.pop(s.send(e.pending()))

    # registering the connection to the server
    _send(irctokens.build("USER", [username, "0", "*", username]))
    _send(irctokens.build("NICK", [username]))

    # define Keycloak related variables
    server = 'http://192.168.0.115:8880'
    realm = 'devel'
    tokenurl = 'http://localhost/kctoken'
    usererr = 'An error occured.'
    emailverified = False
    firstname = 'Foo'
    lastname = 'Bar'

    # go through the cases
    while True:
        lines = d.push(s.recv(1024))

        if lines == None:    # if nothing is received from server
            return "server error"
            break

        for line in lines:
            print(f"< {line.format()}")

            if line.command == "433": # if nickname already in use
                return "433"

            elif line.command == "005": # when 005 is received pass the nickserv register command command
                 _send(irctokens.build("PRIVMSG", ["NickServ", f"REGISTER {password}"]))
            if line.command == 'NOTICE' and line.params == [username, f"Account created"]: # the IRC registration succeeded
                _send(irctokens.build("QUIT"))
                # proceed with connecting to Keycloak
                try:
                    tokendl = requests.get(tokenurl)
                    tokendata = tokendl.json()
                    token = tokendata['access_token']
                    url = server + '/auth/admin/realms/' + realm + '/users'
                except:
                    print("ERROR: Keycloak token could not be installed.")
                # register the user with Keycloak
                if re.match(r"[^@]+@[^@]+\.[^@]+", email):
                    payload = {
                    "firstName": firstname,
                    "lastName": lastname,
                    "email": email,
                    "enabled": "true",
                    "username": username,
                    "credentials": [{"type": "password", "value": password, "temporary": emailverified,}],
                    "emailVerified": emailverified
                    }
                    response = requests.post(
                    url,
                    headers = {'Content-Type': 'application/json', 'Authorization': 'Bearer ' + token},
                    json = payload
                    )
                    print("Keycloak: HTTP Status ", response.status_code)
                    try:
                        print("Keycloak: Response Text: ", response.text)
                    except:
                        print("Keycloak: No or invalid response text. This is not an error.")
                    try:
                        print("Keycloak: Response JSON: ", response.json())
                    except:
                        print("Keycloak: No or invalid response JSON. This it not an error.")
                    status = response.status_code
                    if status == 201: # success
                        print(" SSO User " + username + " created.")
                        return "success" # ok, done
                    if status == 400:
                        print("ERROR: Keycloak indicated that the request is invalid.")
                        return "ssoerr"
                    if status == 401: # unauthorized, usually an issue with the token
                        print("ERROR: Fix your Keycloak API credentials and/or client roles, doh.")
                        return "ssoerr"
                    if status == 403:
                        print("ERROR: Keycloak indicated that the authorization provided is not enough to access the resource.")
                        return "ssoerr"
                    if status == 404: # not found, usually an issue with the URL
                        print("ERROR: Keycloak indicated that the requested resource does not exist.")
                        return "ssoerr"
                    if status == 409: # likely already occupied username or email address
                        print("ERROR: Keycloak indicated that the resource already exists or \"some other coonflict when processing the request\" occured.")
                        return "409"
                        #to-do: parse response JSON to inform the user whether it's the username OR the email address causing the culprit
                    if status == 415:
                        print("ERROR: Keycloak indicated that the requested media type is not supported.")
                        return "ssoerr"
                    if status == 500:
                        print("ERROR: Keycloak indicated that the server could not fullfill the request due to \"some unexpected error \".")
                        return "ssoerr"
                else: # email address doesn't look like an email address
                    print('Invalid email address supplied.')
                    return "invalidemail"

                #return "success" # ok, done

# register("hello", "test")