# SPDX-License-Identifier: GPL-3.0-or-later

# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
#
# Copyright (C) 2013 - 2024, nymea GmbH
# Copyright (C) 2024 - 2025, chargebyte austria GmbH
#
# This file is part of nymea-plugins.
#
# nymea-plugins is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# nymea-plugins is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with nymea-plugins. If not, see <https://www.gnu.org/licenses/>.
#
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

import time
from zeroconf import IPVersion, ServiceBrowser, ServiceInfo, Zeroconf
from typing import Callable, List

class ZeroconfDevice(object):
    # To do: replace with nymea serviceBrowser
    def __init__(self, name: str, ip: str, port: int, model: str, id: str) -> None:
        self.name = name
        self.ip = ip
        self.port = port
        self.model = model
        self.id = id

    def __repr__(self) -> str:
        return f"{type(self).__name__}({self.__dict__})"

    def __eq__(self, other) -> bool:
        return self is other or self.__dict__ == other.__dict__

class ZeroconfListener(object):
    # To do: replace with nymea serviceBrowser
    """Basic zeroconf listener."""

    def __init__(self, func: Callable[[ServiceInfo], None]) -> None:
        """Initialize zeroconf listener with function callback."""
        self._func = func

    def __repr__(self) -> str:
        return f"{type(self).__name__}({self.__dict__})"

    def __eq__(self, other) -> bool:
        return self is other or self.__dict__ == other.__dict__

    def add_service(self, zeroconf: Zeroconf, type: str, name: str) -> None:
        """Callback function when zeroconf service is discovered."""
        self._func(zeroconf.get_service_info(type, name))

    def update_service(self, zeroconf: Zeroconf, type: str, name: str) -> None:
        return

    def remove_service(self, zeroconf: Zeroconf, type: str, name: str) -> None:
        return

def discover(service_type: str, timeout: int = 5) -> List[ZeroconfDevice]:
    # To do: replace with nymea serviceBrowser
    """From pyvizio: Return all discovered zeroconf services of a given service type over given timeout period."""
    services = []

    def append_service(info: ServiceInfo) -> None:
        """Append discovered zeroconf service to service list."""
        name = info.name[: -(len(info.type) + 1)]
        ip = info.parsed_addresses(IPVersion.V4Only)[0]
        port = info.port
        model = info.properties.get(b"name", "")
        id = info.properties.get(b"id")

        # handle id decode for various discovered use cases
        if isinstance(id, bytes):
            try:
                int(id, 16)
            except Exception:
                id = id.hex()
        else:
            id = None

        service = ZeroconfDevice(name, ip, port, model, id)
        services.append(service)

    zeroconf = Zeroconf()
    ServiceBrowser(zeroconf, service_type, ZeroconfListener(append_service))
    time.sleep(timeout)
    zeroconf.close()

    return services