import logging
from sys import stderr
from functools import partial

from tornado.ioloop import IOLoop

from tfw.fsm import YamlFSM
from tfw.event_handlers import FSMAwareEventHandler
from tfw.components.ide import IdeHandler
from tfw.components.terminal import TerminalHandler
from tfw.components.frontend import FrontendHandler
from tfw.components.process_management import ProcessHandler, ProcessLogHandler
from tfw.components.snapshots import SnapshotHandler
from tfw.components.fsm import FSMHandler
from tfw.main import EventHandlerFactory, setup_signal_handlers
from tfw.logging import Log, Logger, LogFormatter, VerboseLogFormatter
from tfw.config import TFWENV, TAOENV

from custom_handlers import CenatorHandler, TestCommandsHandler, messageFSMStepsHandler

LOG = logging.getLogger(__name__)


def main():
    # pylint: disable=unused-variable
    Logger([
        Log(stderr, LogFormatter(20)),
        Log(TFWENV.LOGFILE, VerboseLogFormatter())
    ]).start()

    eh_factory = EventHandlerFactory()
    # TFW builtin EventHandlers (required for their respective functionalities)
    # TFW FSM
    fsm_eh = eh_factory.build(FSMHandler(
        fsm_type=partial(
            YamlFSM,
            'test_fsm.yml',
            {}  # jinja2 variables, empty dict enables jinja2 without any variables
        )
    ))
    # Web IDE backend
    ide_eh = eh_factory.build(IdeHandler(
        allowed_directories=[TFWENV.IDE_WD, TFWENV.WEBSERVICE_DIR],
        directory=TFWENV.IDE_WD,
        exclude=['*.pyc']
    ))
    # Web shell backend
    terminal_eh = eh_factory.build(TerminalHandler(
        port=TFWENV.TERMINADO_PORT,
        user=TAOENV.USER,
        workind_directory=TFWENV.TERMINADO_WD,
        histfile=TFWENV.HISTFILE
    ))
    # Handles 'deploy' button clicks
    processmanager_eh = eh_factory.build(ProcessHandler(
        supervisor_uri=TFWENV.SUPERVISOR_HTTP_URI,
        log_tail=2000,
    ))
    # Sends live logs of webservice process to frontend
    logmonitor_eh = eh_factory.build(ProcessLogHandler(
        process_name='webservice',
        supervisor_uri=TFWENV.SUPERVISOR_HTTP_URI,
        log_tail=2000
    ))
    # Manages filesystem snapshots of directories
    snapshot_eh = eh_factory.build(SnapshotHandler(
        directories=[
            TFWENV.IDE_WD,
            TFWENV.WEBSERVICE_DIR
        ],
        snapshots_dir=TFWENV.SNAPSHOTS_DIR
    ))
    # Proxies frontend API calls to frontend
    frontend_eh = eh_factory.build(FrontendHandler())

    # Replace these with your custom event handlers
    # Echoes executed commands to messages
    cenator_eh = eh_factory.build(CenatorHandler())
    # Echoes FSM steps
    message_fsm_steps_eh = eh_factory.build(
        messageFSMStepsHandler,
        event_handler_type=FSMAwareEventHandler
    )
    # Catches special commands
    commands_eh = eh_factory.build(TestCommandsHandler(
        bashrc=f'/home/{TAOENV.USER}/.bashrc'
    ))

    setup_signal_handlers()
    IOLoop.instance().start()


if __name__ == '__main__':
    main()