import logging
from ast import literal_eval

from tfw.components.frontend import MessageSender
from tfw.components.terminal import TerminalCommandsHandler
from tfw.main import TFWUplinkConnector


LOG = logging.getLogger(__name__)


class CenatorHandler:
    keys = ['history.bash']

    def handle_event(self, message, server_connector):  # pylint: disable=no-self-use
        command = message['value']
        LOG.debug('User executed command: "%s"', command)
        MessageSender(server_connector).send('JOHN CENA', f'You\'ve executed "{command}"')


class TestCommandsHandler(TerminalCommandsHandler):
    # pylint: disable=unused-argument,attribute-defined-outside-init,no-self-use
    def command_sendmessage(self, *args):
        if not args:
            message_template = """'{"key": "", "data": {"command": ""}}'"""
            TFWUplinkConnector().send_message({
                'key': 'shell',
                'data': {
                    'command': 'write',
                    'value': f'sendmessage {message_template}'
                }
            })
        else:
            TFWUplinkConnector().send_message(literal_eval(args[0]))


def messageFSMStepsHandler(message, server_connector):
    """
    When the FSM steps this method is invoked.
    Receives a 'data' field from an fsm_update message as kwargs.
    """
    MessageSender(server_connector).send(
        'FSM info',
        f'FSM has stepped from state "{message["last_event"]["from_state"]}" '
        f'to state "{message["current_state"]}" in response to trigger "{message["last_event"]["trigger"]}"'
    )