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87 lines
2.9 KiB
87 lines
2.9 KiB
from django.db.models import F
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from django.db import transaction
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from common.utils.timezone import now
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from users.models import User
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from .models import SiteMessage as SiteMessageModel, SiteMessageUsers
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class SiteMessageUtil:
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@classmethod
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def send_msg(cls, subject, message, user_ids=(), group_ids=(),
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sender=None, is_broadcast=False):
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if not any((user_ids, group_ids, is_broadcast)):
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raise ValueError('No recipient is specified')
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with transaction.atomic():
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site_msg = SiteMessageModel.objects.create(
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subject=subject, message=message,
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is_broadcast=is_broadcast, sender=sender,
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)
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if is_broadcast:
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user_ids = User.objects.all().values_list('id', flat=True)
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else:
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if group_ids:
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site_msg.groups.add(*group_ids)
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user_ids_from_group = User.groups.through.objects.filter(
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usergroup_id__in=group_ids
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).values_list('user_id', flat=True)
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user_ids = [*user_ids, *user_ids_from_group]
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site_msg.users.add(*user_ids)
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@classmethod
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def get_user_all_msgs(cls, user_id):
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site_msgs = SiteMessageModel.objects.filter(
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m2m_sitemessageusers__user_id=user_id
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).distinct().annotate(
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has_read=F('m2m_sitemessageusers__has_read'),
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read_at=F('m2m_sitemessageusers__read_at')
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).order_by('-date_created')
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return site_msgs
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@classmethod
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def get_user_all_msgs_count(cls, user_id):
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site_msgs_count = SiteMessageModel.objects.filter(
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m2m_sitemessageusers__user_id=user_id
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).distinct().count()
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return site_msgs_count
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@classmethod
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def filter_user_msgs(cls, user_id, has_read=False):
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site_msgs = SiteMessageModel.objects.filter(
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m2m_sitemessageusers__user_id=user_id,
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m2m_sitemessageusers__has_read=has_read
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).distinct().annotate(
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has_read=F('m2m_sitemessageusers__has_read'),
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read_at=F('m2m_sitemessageusers__read_at')
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).order_by('-date_created')
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return site_msgs
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@classmethod
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def get_user_unread_msgs_count(cls, user_id):
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site_msgs_count = SiteMessageModel.objects.filter(
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m2m_sitemessageusers__user_id=user_id,
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m2m_sitemessageusers__has_read=False
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).distinct().count()
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return site_msgs_count
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@classmethod
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def mark_msgs_as_read(cls, user_id, msg_ids):
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site_msg_users = SiteMessageUsers.objects.filter(
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user_id=user_id, sitemessage_id__in=msg_ids,
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has_read=False
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)
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for site_msg_user in site_msg_users:
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site_msg_user.has_read = True
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site_msg_user.read_at = now()
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SiteMessageUsers.objects.bulk_update(
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site_msg_users, fields=('has_read', 'read_at'))
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