import tornado.ioloop
import tornado.web
import tornado.escape
import tornado.options
import tornado.httputil
import jinja2
import pyjade.compiler
import coffeescript
import markdown

import github


class GithubLoginHandler(tornado.web.RequestHandler, github.GithubMixin):

    _OAUTH_REDIRECT_URL = 'http://localhost:8888/auth/github'

    @tornado.web.asynchronous
    def get(self):
        # we can append next to the redirect uri, so the user gets the
        # correct URL on login
        redirect_uri = tornado.httputil.url_concat(
                self._OAUTH_REDIRECT_URL, {'next': self.get_argument('next', '/')})

        # if we have a code, we have been authorized so we can log in
        if self.get_argument("code", False):
            self.get_authenticated_user(
                redirect_uri=redirect_uri,
                client_id=self.settings["github_client_id"],
                client_secret=self.settings["github_secret"],
                code=self.get_argument("code"),
                callback=self.async_callback(self._on_login)
            )
            return

        # otherwise we need to request an authorization code
        self.authorize_redirect(
                redirect_uri=redirect_uri,
                client_id=self.settings["github_client_id"],
                extra_params={"scope": self.settings['github_scope'], "foo":1})

    def _on_login(self, user):
        """ This handles the user object from the login request """
        if user:
            logging.info('logged in user from github: ' + str(user))
            self.set_secure_cookie("user", tornado.escape.json_encode(user))
        else:
            self.clear_cookie("user")
        self.redirect(self.get_argument("next","/"))


class GistLister(BaseHandler, github.GithubMixin):

    @tornado.web.authenticated
    @tornado.web.asynchronous
    def get(self):
        self.github_request(
                '/gists', self._on_get_gists,
                access_token=self.current_user['access_token'])

    def _on_get_gists(self, gists):
        self.render('gists.jade', gists=gists)