#-----------------------------------------------------------------------------
# Copyright (c) 2012 - 2020, Anaconda, Inc., and Bokeh Contributors.
# All rights reserved.
#
# The full license is in the file LICENSE.txt, distributed with this software.
#-----------------------------------------------------------------------------

#-----------------------------------------------------------------------------
# Boilerplate
#-----------------------------------------------------------------------------
import logging # isort:skip
log = logging.getLogger(__name__)

#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------

# Standard library imports
from argparse import Namespace
from typing import Dict

# Bokeh imports
from bokeh.settings import settings
from bokeh.util.logconfig import basicConfig

# Bokeh imports
from ...application import Application
from ..subcommand import Subcommand
from ..util import report_server_init_errors
from .serve import base_serve_args

#-----------------------------------------------------------------------------
# Globals and constants
#-----------------------------------------------------------------------------

__all__ = (
    'Static',
)

#-----------------------------------------------------------------------------
# General API
#-----------------------------------------------------------------------------

class Static(Subcommand):
    ''' Subcommand to launch the Bokeh static server. '''

    #: name for this subcommand
    name = "static"

    help = "Serve bokehjs' static assets (JavaScript, CSS, images, fonts, etc.)"

    args = base_serve_args

    def invoke(self, args: Namespace) -> None:
        '''

        '''
        basicConfig(format=args.log_format, filename=args.log_file)

        # This is a bit of a fudge. We want the default log level for non-server
        # cases to be None, i.e. we don't set a log level. But for the server we
        # do want to set the log level to INFO if nothing else overrides that.
        log_level = settings.py_log_level(args.log_level)
        if log_level is None:
            log_level = logging.INFO
        logging.getLogger('bokeh').setLevel(log_level)

        if args.use_config is not None:
            log.info(f"Using override config file: {args.use_config}")
            settings.load_config(args.use_config)

        # protect this import inside a function so that "bokeh info" can work
        # even if Tornado is not installed
        from bokeh.server.server import Server

        applications: Dict[str, Application] = {}

        _allowed_keys = ['port', 'address']
        server_kwargs = { key: getattr(args, key) for key in _allowed_keys if getattr(args, key, None) is not None }

        with report_server_init_errors(**server_kwargs):
            server = Server(applications, **server_kwargs)

            address_string = ''
            if server.address is not None and server.address != '':
                address_string = ' address ' + server.address

            log.info("Starting Bokeh static server on port %d%s", server.port, address_string)
            server.run_until_shutdown()

#-----------------------------------------------------------------------------
# Dev API
#-----------------------------------------------------------------------------

#-----------------------------------------------------------------------------
# Private API
#-----------------------------------------------------------------------------

#-----------------------------------------------------------------------------
# Code
#-----------------------------------------------------------------------------
