from __future__ import absolute_import, unicode_literals

import logging
import os

import mopidy
from mopidy import config as config_lib, exceptions, ext


logger = logging.getLogger(__name__)


class Extension(ext.Extension):
    dist_name = 'Mopidy-HTTP'
    ext_name = 'http'
    version = mopidy.__version__

    def get_config_schema(self):
        schema = super(Extension, self).get_config_schema()
        schema['hostname'] = config_lib.Hostname()
        schema['port'] = config_lib.Port()
        schema['static_dir'] = config_lib.Path(optional=True)
        schema['zeroconf'] = config_lib.String(optional=True)
        return schema

    def validate_environment(self):
        try:
            import tornado.web  # noqa
        except ImportError as e:
            raise exceptions.ExtensionError('tornado library not found', e)

    def setup(self, registry):
        from .actor import HttpFrontend
        from .handlers import make_mopidy_app_factory

        HttpFrontend.apps = registry['http:app']
        HttpFrontend.statics = registry['http:static']

        registry.add('frontend', HttpFrontend)
        registry.add('http:app', {
            'name': 'mopidy',
            'factory': make_mopidy_app_factory(
                registry['http:app'], registry['http:static']),
        })
