#  
# ============LICENSE_START========================================== 
# org.onap.vvp/engagementmgr
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# Copyright © 2017 AT&T Intellectual Property. All rights reserved.
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# 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.
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#             http://www.apache.org/licenses/LICENSE-2.0
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# 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.
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# 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
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# ============LICENSE_END============================================
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# 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 as e:
                    msg = "Something went wrong while trying to send bulk mail as part of the digest notifications"
                    logger.error(msg)