# imports
import calendar

import demistomock as demisto  # noqa: F401
import duo_client
from CommonServerPython import *  # noqa: F401

# Setup

HOST = demisto.getParam("hostname")
INTEGRATION_KEY = demisto.params().get("credentials_key", {}).get("identifier") or demisto.getParam("integration_key")
SECRET_KEY = demisto.params().get("credentials_key", {}).get("password") or demisto.getParam("secret_key")
USE_SSL = not demisto.params().get("insecure", False)
USE_PROXY = demisto.params().get("proxy", False)

# The duo client returns a signature error upon bad secret
# Convert it to a more informative message using this
INVALID_SECRET_ERROR_STRING = "Invalid signature in request credentials"

# Maps

OPTIONS_TO_TIME = {
    "10_seconds_ago": datetime.now() - timedelta(seconds=10),
    # left here for backwards compatability
    "1_minutes_ago": datetime.now() - timedelta(minutes=1),
    "1_minute_ago": datetime.now() - timedelta(minutes=1),
    "10_minutes_ago": datetime.now() - timedelta(minutes=10),
    "1_hour_ago": datetime.now() - timedelta(hours=1),
    "10_hours_ago": datetime.now() - timedelta(hours=10),
    "1_day_ago": datetime.now() - timedelta(days=1),
    "1_week_ago": datetime.now() - timedelta(days=7),
    "1_month_ago": datetime.now() - timedelta(days=30),
    "1_year_ago": datetime.now() - timedelta(days=365),
    "5_years_ago": datetime.now() - timedelta(days=1825),
    "10_years_ago": datetime.now() - timedelta(days=3650),
}


def override_make_request(self, method, uri, body, headers):  # pragma: no cover
    """

    This function is an override function to the original
    duo_client.client.Client._make_request function in API version 4.1.0

    The reason for it is that the API creates a bad uri address for the GET requests.

    """

    conn = self._connect()

    conn.request(method, uri, body, headers)
    response = conn.getresponse()
    data = response.read()
    self._disconnect(conn)
    return (response, data)


# Utility Methods


def create_api_call():
    if USE_SSL:
        client = duo_client.Admin(
            ikey=INTEGRATION_KEY,
            skey=SECRET_KEY,
            host=HOST,
        )
    else:
        client = duo_client.Admin(ikey=INTEGRATION_KEY, skey=SECRET_KEY, host=HOST, ca_certs="DISABLE")
    try:
        client._make_request = lambda method, uri, body, headers: override_make_request(client, method, uri, body, headers)

    except Exception as e:
        demisto.error(f"Error making request - failed to create client: {e}")
        raise Exception

    return client


def set_proxy(admin_api):  # pragma: no cover
    try:
        proxy_settings = os.environ.get("HTTP_PROXY") or os.environ.get("http_proxy", "")
        if proxy_settings:
            host, port = get_host_port_from_proxy_settings(proxy_settings)

            if USE_PROXY:
                admin_api.set_proxy(host=host.strip(":"), port=port)

    # if no proxy settings have been set
    except ValueError:
        admin_api.set_proxy(host=None, port=None, proxy_type=None)

    except Exception as e:
        demisto.error(f"Error setting proxy: {e}")
        raise Exception


def get_host_port_from_proxy_settings(proxy_settings):  # pragma: no cover
    proxy_settings_str = str(proxy_settings)

    port = proxy_settings_str.split(":")[-1]

    host_regex_filter = re.search(ipv4Regex, proxy_settings_str)

    if host_regex_filter:
        host = host_regex_filter.group()
    else:
        proxy_settings_str_args = proxy_settings_str.split(":")

        if "http" in proxy_settings_str:
            host = ":".join(proxy_settings_str_args[1:-1])[2:]
        else:
            host = ":".join(proxy_settings_str_args[0:-1])

    return host, port


def time_to_timestamp_milliseconds(time):  # pragma: no cover
    return str(calendar.timegm(time.utctimetuple()) * 1000)


# Generic function that receives a result json, and turns it into an entryObject
def get_entry_for_object(title, obj, contents, context, headers=None):
    if len(obj) == 0:
        return {
            "Type": entryTypes["note"],
            "Contents": contents,
            "ContentsFormat": formats["json"],
            "HumanReadable": "There is no output result",
            "EntryContext": context,
        }

    if headers:
        if isinstance(headers, str):
            headers = headers.split(",")

        if isinstance(obj, dict):
            headers = list(set(headers).intersection(set(obj.keys())))

    readable = tableToMarkdown(title, obj, headers, lambda h: h.title().replace("_", " ").replace(".", ":"))

    return {
        "Type": entryTypes["note"],
        "Contents": obj,
        "ContentsFormat": formats["json"],
        "ReadableContentsFormat": formats["markdown"],
        "HumanReadable": readable,
        "EntryContext": context,
    }


def get_user_id(admin_api, username):
    res = admin_api.get_users_by_name(username)

    if len(res) == 0:
        return_error("No users found with the given username")

    return res[0]["user_id"]


# Methods


# Duo client return 2 different known structures of error messages
def test_instance(admin_api):
    try:
        admin_api.get_users(limit=1)
        demisto.results("ok")

    except Exception as e:
        if hasattr(e, "data"):
            # error data for 40103 is not informative enough so we write our own
            if e.__getattribute__("data")["code"] == 40103:
                raise Exception("Invalid secret key in request credentials")

            else:
                raise Exception(e.__getattribute__("data")["message"])

        elif hasattr(e, "strerror"):
            raise Exception(e.__getattribute__("strerror"))

        else:
            raise Exception("Unknown error: " + str(e))


def get_all_users(admin_api):
    res = admin_api.get_users()

    entry = get_entry_for_object(
        "Users",
        res,
        res,
        {"DuoAdmin.UserDetails(val.username==obj.username)": res},
        headers=["username", "user_id", "is_enrolled", "last_login", "realname", "email", "phones", "status"],
    )

    demisto.results(entry)


def get_authentication_logs_by_user(admin_api, args):
    user_name = args.get("username")
    min_time = args.get("from")
    limit = demisto.args().get("limit", "50")
    res = admin_api.get_authentication_log(
        2,
        users=get_user_id(admin_api, user_name),
        mintime=time_to_timestamp_milliseconds(OPTIONS_TO_TIME[min_time]),
        maxtime=time_to_timestamp_milliseconds(datetime.now()),
        limit=limit,
    )

    raw_logs = res["authlogs"]

    for log in raw_logs:
        log["timestamp"] = formatEpochDate(log["timestamp"])

    entry = get_entry_for_object(
        "Authentication logs for " + user_name,
        raw_logs,
        raw_logs,
        {"DuoAdmin.UserDetails(val.username && val.username == obj.username)": {"username": user_name, "auth_logs": raw_logs}},
        headers=["access_device", "event_type", "result", "reason", "application", "factor", "timestamp", "auth_device"],
    )
    demisto.results(entry)


def get_devices_by_user(admin_api, args):
    user_name = args.get("username")
    user_id = get_user_id(admin_api, user_name)
    res = admin_api.get_user_phones(user_id)

    entry = get_entry_for_object(
        f"Devices for {user_name}",
        res,
        res,
        {"DuoAdmin.UserDetails(val.username && val.username == obj.username)": {"username": user_name, "phones": res}},
    )

    demisto.results(entry)


def get_all_devices(admin_api):
    res = admin_api.get_phones()

    entry = get_entry_for_object("Devices", res, res, {"DuoAdmin.Phones(val.phone_id==obj.phone_id)": res})

    demisto.results(entry)


def dissociate_device_by_user(admin_api, args):
    user_name = args.get("username")
    device_id = args.get("device_id")

    user_id = get_user_id(admin_api, user_name)
    admin_api.delete_user_phone(user_id, device_id)
    demisto.results(f"Phone with ID {device_id} was dissociated to user {user_name}")


def associate_device_to_user(admin_api, args):
    user_name = args.get("username")
    device_id = args.get("device_id")

    user_id = get_user_id(admin_api, user_name)
    admin_api.add_user_phone(user_id, device_id)
    demisto.results(f"Phone with ID {device_id} was associated to user {user_name}")


def get_u2f_tokens_by_user(admin_api, args):
    user_name = args.get("username")
    user_id = get_user_id(admin_api, user_name)
    res = admin_api.get_user_u2ftokens(user_id)

    for token in res:
        token["date_added"] = formatEpochDate(token["date_added"])

    entry = get_entry_for_object(
        "U2F Tokens for " + user_name,
        res,
        res,
        {"DuoAdmin.UserDetails(val.username && val.username == obj.username)": {"username": user_name, "u2ftokens": res}},
    )

    demisto.results(entry)


def delete_u2f_token(admin_api, args):
    token_id = args.get("token_id")
    admin_api.delete_u2ftoken(token_id)
    demisto.results(f"Token with ID {token_id} deleted successfully")


def get_all_bypass_codes(admin_api):
    res = admin_api.get_bypass_codes()
    entry = get_entry_for_object(
        "Bypass",
        res,
        res,
        {"DuoAdmin.UserDetails(val.bypass_code_id==obj.bypasscodeid)": res},
        headers=[
            "bypass_code_id",
            "admin_email",
            "expiration",
            "reuse_count",
            "user.created",
            "user.email",
            "user.last_login",
            "user.status",
            "user.user_id",
            "user.username",
        ],
    )
    demisto.results(entry)


def get_all_admins(admin_api):
    res = admin_api.get_admins()

    entry = get_entry_for_object(
        "Admins",
        res,
        res,
        {"DuoAdmin.AdminDetails(val.name==obj.name)": res},
        headers=["admin_id", "admin_units", "created", "email", "last_login", "name", "phone", "role", "status"],
    )
    demisto.results(entry)


def modify_admin_user(admin_api, admin_id=None, name=None, phone=None, password=None, password_change_required=None):
    admin_api.update_admin(admin_id, name, phone, password, password_change_required)
    return CommandResults(readable_output=f"The admin id {admin_id} successfully updated")


def modify_user(
    admin_api,
    user_id=None,
    user_name=None,
    real_name=None,
    status=None,
    notes=None,
    email=None,
    first_name=None,
    last_name=None,
    alias1=None,
    alias2=None,
    alias3=None,
    alias4=None,
    aliases=None,
):
    admin_api.update_user(
        user_id,
        user_name,
        real_name,
        status,
        notes,
        email,
        first_name,
        last_name,
        alias1,
        alias2,
        alias3,
        alias4,
        argToList(aliases),
    )
    return CommandResults(readable_output=f"The user id {user_id} successfully updated")


def main() -> None:  # pragma: no cover
    args = demisto.args()
    command = demisto.command()
    demisto.debug(f"Command being called is {command}")
    if not (SECRET_KEY and INTEGRATION_KEY):
        raise DemistoException("Secret Key and Integration Key must be provided.")
    try:
        admin_api = create_api_call()
        set_proxy(admin_api)
        if command == "test-module":
            test_instance(admin_api)

        elif command == "duoadmin-get-users":
            get_all_users(admin_api)

        elif command == "duoadmin-get-admins":
            get_all_admins(admin_api)

        elif command == "duoadmin-get-bypass-codes":
            get_all_bypass_codes(admin_api)

        elif command == "duoadmin-get-authentication-logs-by-user":
            get_authentication_logs_by_user(admin_api, args)

        elif command == "duoadmin-get-devices":
            get_all_devices(admin_api)

        elif command == "duoadmin-get-devices-by-user":
            get_devices_by_user(admin_api, args)

        elif command == "duoadmin-associate-device-to-user":
            associate_device_to_user(admin_api, args)

        elif command == "duoadmin-dissociate-device-from-user":
            dissociate_device_by_user(admin_api, args)

        elif command == "duoadmin-get-u2f-tokens-by-user":
            get_u2f_tokens_by_user(admin_api, args)

        elif command == "duoadmin-delete-u2f-token":
            delete_u2f_token(admin_api, args)

        elif command == "duoadmin-modify-user":
            return_results(modify_user(admin_api, **demisto.args()))

        elif command == "duoadmin-modify-admin":
            return_results(modify_admin_user(admin_api, **demisto.args()))
        else:
            raise NotImplementedError(f"{command} command is not implemented.")
    except Exception as e:
        return_error(f"Failed to execute {command} command.\nError:\n{e!s}")


if __name__ in ("__main__", "__builtin__", "builtins"):
    main()