import os
from simple_ext1.application import SimpleApp1
from jupyter_server.serverapp import aliases, flags
from traitlets import Bool, Unicode, observe

DEFAULT_STATIC_FILES_PATH = os.path.join(os.path.dirname(__file__), "./../simple_ext1/static")
DEFAULT_TEMPLATE_FILES_PATH = os.path.join(os.path.dirname(__file__), "./../simple_ext1/templates")

class SimpleApp11(SimpleApp1):
    flags['hello']=(
        { 'SimpleApp11' : {'hello' : True} }, "Say hello on startup."
    )
    aliases.update({
        'simple11-dir': 'SimpleApp11.simple11_dir',
    })

    # The name of the extension.
    name = "simple_ext11"

    # Te url that your extension will serve its homepage.
    extension_url = '/simple_ext11/default'

    # Local path to static files directory.
    static_paths = [
        DEFAULT_STATIC_FILES_PATH
    ]

    # Local path to templates directory.
    template_paths = [
        DEFAULT_TEMPLATE_FILES_PATH
    ]

    simple11_dir = Unicode('',
        config=True,
        help='Simple directory'
    )

    hello = Bool(False,
        config=True,
        help='Say hello',
    )

    ignore_js = Bool(False,
        config=True,
        help='Ignore Javascript',
    )

    @observe('ignore_js')
    def _update_ignore_js(self, change):
        """TODO Does the observe work?"""
        self.log.info('ignore_js has just changed: {}'.format(change))

    @property
    def simple11_dir_formatted(self):
        return "/" + self.simple11_dir

    def initialize_settings(self):
        self.log.info('hello: {}'.format(self.hello))
        if self.hello == True:
            self.log.info("Hello Simple11: You have launched with --hello flag or defined 'c.SimpleApp1.hello == True' in your config file")
        self.log.info('ignore_js: {}'.format(self.ignore_js))
        super().initialize_settings()

    def initialize_handlers(self):
        super().initialize_handlers()

#-----------------------------------------------------------------------------
# Main entry point
#-----------------------------------------------------------------------------

main = launch_new_instance = SimpleApp11.launch_instance