forked from gergely/calendar-social
271 lines
7.6 KiB
Python
271 lines
7.6 KiB
Python
# Calendar.social
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# Copyright (C) 2018 Gergely Polonkai
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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"""Main module for the Calendar.social app
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"""
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from datetime import datetime
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import os
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from flask import Flask, abort, current_app, redirect, render_template, request, url_for
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from flask_babelex import Babel, get_locale as babel_get_locale
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from flask_security import SQLAlchemyUserDatastore, current_user, login_required
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from sqlalchemy.orm.exc import NoResultFound, MultipleResultsFound
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def get_locale():
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"""Locale selector
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Selects the best locale based on values sent by the browser.
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"""
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supported_languages = ['en', 'hu']
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if 'l' in request.args and request.args['l'].lower() in supported_languages:
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return request.args['l'].lower()
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return request.accept_languages.best_match(supported_languages)
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def template_vars():
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"""Function to inject global template variables
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"""
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now = datetime.utcnow()
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return {
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'lang': babel_get_locale().language,
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'now': now,
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'now_ts': now.timestamp(),
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}
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def route(*args, **kwargs):
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"""Mark a function as a future route
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Such functions will be iterated over when the application is initialised. ``*args`` and
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``**kwargs`` will be passed verbatim to `Flask.route()`.
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"""
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def decorator(func): # pylint: disable=missing-docstring
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setattr(func, 'routing', (args, kwargs))
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return func
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return decorator
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class CalendarSocialApp(Flask):
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"""The Calendar.social app
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"""
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def __init__(self, name, config=None): # pylint: disable=too-many-locals
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from .forms import LoginForm
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from .models import db, User, Role
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from .security import security, AnonymousUser
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Flask.__init__(self, name)
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self._timezone = None
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config_name = os.environ.get('ENV', config or 'dev')
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self.config.from_pyfile(f'config_{config_name}.py', True)
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# Make sure we look up users both by their usernames and email addresses
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self.config['SECURITY_USER_IDENTITY_ATTRIBUTES'] = ('username', 'email')
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db.init_app(self)
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babel = Babel(app=self)
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babel.localeselector(get_locale)
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user_store = SQLAlchemyUserDatastore(db, User, Role)
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security.init_app(self, datastore=user_store,
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anonymous_user=AnonymousUser,
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login_form=LoginForm)
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self.context_processor(template_vars)
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for attr_name in self.__dir__():
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attr = getattr(self, attr_name)
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if not callable(attr):
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continue
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args, kwargs = getattr(attr, 'routing', (None, None))
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if args is None:
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continue
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self.route(*args, **kwargs)(attr)
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@property
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def timezone(self):
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"""The default time zone of the app
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"""
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from warnings import warn
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from flask import has_app_context
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from pytz import timezone, utc
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from pytz.exceptions import UnknownTimeZoneError
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if not has_app_context():
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return utc
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if not self._timezone:
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timezone_str = current_app.config.get('DEFAULT_TIMEZONE', 'UTC')
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try:
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self._timezone = timezone(timezone_str)
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except UnknownTimeZoneError:
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warn(f'Timezone of {self} (or the default timezone) "{timezone_str}" is invalid')
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self._timezone = utc
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return self._timezone
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@staticmethod
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@route('/')
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def hello():
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"""View for the main page
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This will display a welcome message for users not logged in; for others, their main
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calendar view is displayed.
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"""
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from .calendar_system.gregorian import GregorianCalendar
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if not current_user.is_authenticated:
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return render_template('welcome.html')
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try:
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timestamp = datetime.fromtimestamp(float(request.args.get('date')))
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except TypeError:
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timestamp = datetime.utcnow()
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calendar = GregorianCalendar(timestamp.timestamp())
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return render_template('index.html', calendar=calendar)
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@staticmethod
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@route('/register', methods=['POST', 'GET'])
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def register():
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"""View for user registration
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If the ``REGISTRATION_FAILED`` configuration value is set to ``True`` it displays the
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registration disabled template. Otherwise, it performs user registration.
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"""
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if not current_app.config['REGISTRATION_ENABLED']:
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return render_template('registration-disabled.html')
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from .forms import RegistrationForm
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from .models import db, User
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form = RegistrationForm()
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if form.validate_on_submit():
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# TODO: This might become False later, if we want registrations to be confirmed via
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# e-mail
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user = User(active=True)
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form.populate_obj(user)
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db.session.add(user)
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db.session.commit()
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return redirect(url_for('hello'))
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return render_template('registration.html', form=form)
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@staticmethod
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@route('/new-event', methods=['GET', 'POST'])
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@login_required
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def new_event():
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"""View for creating a new event
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This presents a form to the user that allows entering event details.
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"""
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from .forms import EventForm
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from .models import db, Event
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form = EventForm()
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if form.validate_on_submit():
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event = Event(user=current_user)
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form.populate_obj(event)
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db.session.add(event)
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db.session.commit()
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return redirect(url_for('hello'))
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return render_template('event-edit.html', form=form)
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@staticmethod
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@route('/settings', methods=['GET', 'POST'])
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@login_required
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def settings():
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"""View for user settings
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"""
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from .forms import SettingsForm
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from .models import db
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form = SettingsForm(current_user)
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if form.validate_on_submit():
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form.populate_obj(current_user)
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db.session.commit()
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return redirect(url_for('hello'))
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return render_template('user-settings.html', form=form)
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@staticmethod
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@route('/event/<string:event_uuid>')
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def event_details(event_uuid):
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"""View to display event details
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"""
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from .models import Event
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try:
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event = Event.query.filter(Event.event_uuid == event_uuid).one()
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except NoResultFound:
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abort(404)
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except MultipleResultsFound:
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abort(500)
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return render_template('event-details.html', event=event)
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@staticmethod
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@route('/profile/@<string:username>')
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def display_profile(username):
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"""View to display profile details
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"""
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from .models import Profile, User
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profile = current_user.profile
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if profile is None:
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abort(404)
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return render_template('profile-details.html', profile=profile)
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app = CalendarSocialApp(__name__)
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