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import logging

from defence360agent.contracts.config import MyImunifyConfig
from defence360agent.contracts.messages import MessageType
from defence360agent.contracts.plugins import (
    MessageSink,
    MessageSource,
    expect,
)
from defence360agent.myimunify.model import update_users_protection
from defence360agent.subsys.panels import hosting_panel
from defence360agent.subsys.persistent_state import load_state, save_state

logger = logging.getLogger(__name__)


class MyImunifyPlugin(MessageSink, MessageSource):
    def __init__(self):
        self._previous_myimunify_status = (
            load_state("MyImunifyPlugin").get("myimunify_enabled")
            or MyImunifyConfig.ENABLED
        )
        self._loop = None
        self._sink = None

    async def shutdown(self):
        save_state(
            "MyImunifyPlugin",
            {"myimunify_enabled": self._previous_myimunify_status},
        )

    async def create_sink(self, loop):
        pass

    async def create_source(self, loop, sink):
        self._loop = loop
        self._sink = sink

    async def _update_myimunify_users(self):
        existing_users = await hosting_panel.HostingPanel().get_users()
        await update_users_protection(
            self._sink, existing_users, False, force_config_update=True
        )

    @expect(MessageType.ConfigUpdate)
    async def on_config_update(self, message: MessageType.ConfigUpdate):
        myimunify_enabled = MyImunifyConfig.ENABLED
        previous_status = self._previous_myimunify_status
        # We're also triggering additional MessageType.ConfigUpdate messages
        # so we must update previous_status before triggering new one
        self._previous_myimunify_status = myimunify_enabled
        if myimunify_enabled and not previous_status:
            await self._update_myimunify_users()

        if myimunify_enabled != previous_status:
            await hosting_panel.HostingPanel().switch_ui_config(
                myimunify_enabled=myimunify_enabled
            )