#
# ============LICENSE_START==========================================
# org.onap.vvp/engagementmgr
# ===================================================================
# Copyright © 2017 AT&T Intellectual Property. All rights reserved.
# ===================================================================
#
# Unless otherwise specified, all software contained herein is licensed
# under the Apache License, Version 2.0 (the “License”);
# you may not use this software except in compliance with the License.
# You may obtain a copy of the License at
#
#             http://www.apache.org/licenses/LICENSE-2.0
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# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
#
#
# Unless otherwise specified, all documentation contained herein is licensed
# under the Creative Commons License, Attribution 4.0 Intl. (the “License”);
# you may not use this documentation except in compliance with the License.
# You may obtain a copy of the License at
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#             https://creativecommons.org/licenses/by/4.0/
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# Unless required by applicable law or agreed to in writing, documentation
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
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# ============LICENSE_END============================================
#
# ECOMP is a trademark and service mark of AT&T Intellectual Property.
from datetime import datetime
from django.template.loader import get_template
from engagementmanager import mail
from engagementmanager.bus.handlers.service_bus_base_handler import \
    ServiceBusBaseHandler
from engagementmanager.mail import sendMail
from engagementmanager.models import Notification, IceUserProfile
from engagementmanager.utils.constants import Constants
from engagementmanager.service.logging_service import LoggingServiceFactory

logger = LoggingServiceFactory.get_logger()


class DigestEmailNotificationHandler(ServiceBusBaseHandler):
    def handle_message(self, bus_message):
        logger.debug("New digest bus message arrived - email is about to sent")
        today = datetime.now().date()
        users = Notification.objects.filter(
            activity__create_time__gte=today).values("user").distinct()

        for user in users:
            user = IceUserProfile.objects.get(id=user['user'])

            if user.email_updates_daily_digest:
                notifications = Notification.objects.filter(
                    activity__create_time__gte=today, user=user)
                try:
                    subject_template = get_template(
                        "{notification_template_dir}"
                        "notification_digest_mail_subject.html".format(
                            notification_template_dir=Constants.
                            notification_template_dir))
                    msg_template = get_template(
                        "{notification_template_dir}"
                        "notification_digest_mail_body.html".format(
                            notification_template_dir=Constants.
                            notification_template_dir))

                    sendMail(
                        user.email,
                        notifications.values(),
                        msg_template,
                        subject_template,
                        mail_from=mail.ice_admin_mail_from)
                except Exception:
                    msg = "Something went wrong while trying " +\
                        "to send bulk mail as part of the digest notifications"
                    logger.error(msg)