#
# Copyright (c) 2014 ThoughtWorks, Inc.
#
# Pixelated is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Pixelated is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with Pixelated. If not, see <http://www.gnu.org/licenses/>.

from pixelated.adapter.mail_service import MailService
from pixelated.adapter.mail import InputMail
from pixelated.adapter.mail_sender import MailSender
from pixelated.adapter.mailboxes import Mailboxes
from pixelated.adapter.soledad_querier import SoledadQuerier
from pixelated.adapter.search import SearchEngine
from pixelated.adapter.draft_service import DraftService
from pixelated.adapter.mailbox_indexer_listener import MailboxIndexerListener
import pixelated.bitmask_libraries.session as LeapSession
from pixelated.bitmask_libraries.leap_srp import LeapAuthException
from requests.exceptions import ConnectionError
from pixelated.controllers import *
from pixelated.adapter.tag_service import TagService
import os
import sys
from leap.common.events import (
    register,
    events_pb2 as proto
)


def init_index_and_remove_dupes(querier, search_engine, mail_service):
    def wrapper(*args, **kwargs):
        querier.remove_duplicates()
        search_engine.index_mails(mails=mail_service.all_mails(),
                                  callback=querier.mark_all_as_not_recent)

    return wrapper


def update_info_sync_and_index_partial(sync_info_controller, search_engine, mail_service):
    def wrapper(soledad_sync_status):
        sync_info_controller.set_sync_info(soledad_sync_status)
        search_engine.index_mails(mails=mail_service.all_mails())

    return wrapper


def _setup_routes(app, home_controller, mails_controller, tags_controller, features_controller, sync_info_controller):
    # home
    app.add_url_rule('/', methods=['GET'], view_func=home_controller.home)
    # mails
    app.add_url_rule('/mails', methods=['GET'], view_func=mails_controller.mails)
    app.add_url_rule('/mail/<mail_id>/read', methods=['POST'], view_func=mails_controller.mark_mail_as_read)
    app.add_url_rule('/mail/<mail_id>/unread', methods=['POST'], view_func=mails_controller.mark_mail_as_unread)
    app.add_url_rule('/mails/unread', methods=['POST'], view_func=mails_controller.mark_many_mail_unread)
    app.add_url_rule('/mails/read', methods=['POST'], view_func=mails_controller.mark_many_mail_read)
    app.add_url_rule('/mail/<mail_id>', methods=['GET'], view_func=mails_controller.mail)
    app.add_url_rule('/mail/<mail_id>', methods=['DELETE'], view_func=mails_controller.delete_mail)
    app.add_url_rule('/mails', methods=['DELETE'], view_func=mails_controller.delete_mails)
    app.add_url_rule('/mails', methods=['POST'], view_func=mails_controller.send_mail)
    app.add_url_rule('/mail/<mail_id>/tags', methods=['POST'], view_func=mails_controller.mail_tags)
    app.add_url_rule('/mails', methods=['PUT'], view_func=mails_controller.update_draft)
    # tags
    app.add_url_rule('/tags', methods=['GET'], view_func=tags_controller.tags)
    # features
    app.add_url_rule('/features', methods=['GET'], view_func=features_controller.features)
    # sync info
    app.add_url_rule('/sync_info', methods=['GET'], view_func=sync_info_controller.sync_info)


def init_leap_session(app):
    try:
        leap_session = LeapSession.open(app.config['LEAP_USERNAME'],
                                        app.config['LEAP_PASSWORD'],
                                        app.config['LEAP_SERVER_NAME'])
    except ConnectionError, error:
        print("Can't connect to the requested provider")
        sys.exit(1)
    except LeapAuthException:
        print("Couldn't authenticate with the credentials provided")
        sys.exit(1)
    return leap_session


def create_app(app, debug_enabled):
    with app.app_context():
        leap_session = init_leap_session(app)

        tag_service = TagService()
        search_engine = SearchEngine()
        pixelated_mail_sender = MailSender(leap_session.account_email())

        soledad_querier = SoledadQuerier(soledad=leap_session.account._soledad)
        pixelated_mailboxes = Mailboxes(leap_session.account, soledad_querier)

        draft_service = DraftService(pixelated_mailboxes)
        mail_service = MailService(pixelated_mailboxes, pixelated_mail_sender, tag_service, soledad_querier)

        MailboxIndexerListener.SEARCH_ENGINE = search_engine
        InputMail.FROM_EMAIL_ADDRESS = leap_session.account_email()

        home_controller = HomeController()
        features_controller = FeaturesController()
        mails_controller = MailsController(mail_service=mail_service,
                                           draft_service=draft_service,
                                           search_engine=search_engine)
        tags_controller = TagsController(search_engine=search_engine)
        sync_info_controller = SyncInfoController()

        register(signal=proto.SOLEDAD_SYNC_RECEIVE_STATUS,
                 callback=update_info_sync_and_index_partial(sync_info_controller=sync_info_controller,
                                                             search_engine=search_engine,
                                                             mail_service=mail_service))
        register(signal=proto.SOLEDAD_DONE_DATA_SYNC,
                 callback=init_index_and_remove_dupes(querier=soledad_querier,
                                                      search_engine=search_engine,
                                                      mail_service=mail_service))

        _setup_routes(app, home_controller, mails_controller, tags_controller, features_controller,
                      sync_info_controller)

        app.run(host=app.config['HOST'], debug=debug_enabled,
                port=app.config['PORT'], use_reloader=False)


def get_static_folder():
    static_folder = os.path.abspath(os.path.join(os.path.abspath(__file__), "..", "..", "..", "web-ui", "app"))
    # this is a workaround for packaging
    if not os.path.exists(static_folder):
        static_folder = os.path.abspath(
            os.path.join(os.path.abspath(__file__), "..", "..", "..", "..", "web-ui", "app"))
    if not os.path.exists(static_folder):
        static_folder = os.path.join('/', 'usr', 'share', 'pixelated-user-agent')
    return static_folder