import random

from bemani.backend.base import Base
from bemani.protocol import Node


class EventLogHandler(Base):
    """
    A mixin that can be used to provide ESS eventlog handling.
    """

    def handle_eventlog_write_request(self, request: Node) -> Node:
        # Just turn off further logging
        gamesession = request.child_value('data/gamesession')
        if gamesession < 0:
            gamesession = random.randint(1, 1000000)

        root = Node.void('eventlog')
        root.add_child(Node.s64('gamesession', gamesession))
        root.add_child(Node.s32('logsendflg', 0))
        root.add_child(Node.s32('logerrlevel', 0))
        root.add_child(Node.s32('evtidnosendflg', 0))
        return root