273 lines
9.7 KiB
Python
273 lines
9.7 KiB
Python
from typing import Dict
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from app.notification.backend.services.sms_service import SmsService
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from app.notification.backend.services.in_app_notif_service import InAppNotifService
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from app.notification.backend.services.email_service import EmailService
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from app.notification.backend.services.notification_publisher_service import (
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NotificationPublisherService,
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)
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from app.notification.backend.models.constants import (
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NotificationChannel,
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NotificationMessage,
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SystemNotifications,
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)
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import threading
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from datetime import datetime, timezone
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from typing import Optional, Type
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from types import TracebackType
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from infra.models.constants import UserRegion
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from app.notification.common.config.app_settings import app_settings
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from datetime import datetime, timezone
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class NotificationManager:
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notification_queues: dict[NotificationChannel, NotificationPublisherService] = None
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instance_counter = 0
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instance_counter_lock = threading.Lock()
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def __init__(
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self,
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sender_id: str, # Require sender_id in the constructor
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) -> None:
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self.sms_service = SmsService()
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self.in_app_notif_service = InAppNotifService()
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self.email_service = EmailService()
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self.sender_id = sender_id
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self.notification_queues = NotificationManager.__create_notification_queues__()
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@staticmethod
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def __increment_instance_counter__() -> int:
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with NotificationManager.instance_counter_lock:
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NotificationManager.instance_counter += 1
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return NotificationManager.instance_counter
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@staticmethod
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def __decrement_instance_counter__() -> int:
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with NotificationManager.instance_counter_lock:
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NotificationManager.instance_counter -= 1
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return NotificationManager.instance_counter
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@staticmethod
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def __create_notification_queues__() -> None:
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if not NotificationManager.notification_queues:
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NotificationManager.notification_queues = {}
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for channel in NotificationChannel:
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NotificationManager.notification_queues[channel] = (
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NotificationPublisherService(channel=channel)
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)
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return NotificationManager.notification_queues
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async def __aenter__(self):
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if NotificationManager.__increment_instance_counter__() == 1:
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for channel in NotificationManager.notification_queues:
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await NotificationManager.notification_queues[channel].bind()
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async def __aexit__(
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self,
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exctype: Optional[Type[BaseException]],
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excinst: Optional[BaseException],
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exctb: Optional[TracebackType],
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):
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if NotificationManager.__decrement_instance_counter__() == 0:
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for channel in NotificationManager.notification_queues:
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await NotificationManager.notification_queues[channel].close()
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async def __publish_notification__(
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self,
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channel: NotificationChannel,
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message: NotificationMessage,
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) -> None:
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message.properties["publish_time"] = datetime.now(timezone.utc).isoformat()
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await self.notification_queues[channel].publish(
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message=message.model_dump_json()
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)
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async def __generate_message_from_subject_and_event__(
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self,
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subject: str,
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event: str,
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properties: dict,
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region: Optional[UserRegion] = None,
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) -> str:
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# leverage the information in properties to enrich the message.
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message_subject = None
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message = None
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if subject.lower() == "payment":
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pass
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# Default region to be international if not set
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if region is None:
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region = UserRegion.OTHER
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message_subject = SystemNotifications[region][subject.lower()][event.lower()][
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"message_subject"
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]
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message = SystemNotifications[region][subject.lower()][event.lower()]["message"]
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if event.lower() == "authentication":
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message = message.format(properties["auth_code"])
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if not message:
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raise RuntimeError("unsupported event:{}".format(event))
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return message, message_subject
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async def send_in_app_notification(
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self, receiver_id: str, subject: str, event: str, properties: dict = None
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) -> None:
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await self.__publish_notification__(
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channel=NotificationChannel.IN_APP,
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message=NotificationMessage(
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sender_id=app_settings.SYSTEM_USER_ID,
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receiver_id=receiver_id,
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subject=subject,
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event=event,
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properties=properties,
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),
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)
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async def send_chat_message_notification(
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self, receiver_id: str, subject: str, event: str, properties: dict = None
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) -> None:
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(
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content_text,
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content_subject,
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) = await self.__generate_message_from_subject_and_event__(
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subject=subject, event=event, properties=properties
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)
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properties_dict = {
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"content_text": content_text,
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"content_subject": content_subject,
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"receiver_type": "user", # or 'conversation'
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}
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await self.__publish_notification__(
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channel=NotificationChannel.CHAT_MESSAGE,
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message=NotificationMessage(
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sender_id=app_settings.SYSTEM_USER_ID,
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receiver_id=receiver_id,
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subject=subject,
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event=event,
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properties=(
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{**properties_dict, **properties} if properties else properties_dict
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),
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),
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)
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async def send_email_notification(
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self,
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receiver_id: str,
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subject: str,
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event: str,
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properties: dict = None,
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region: Optional[UserRegion] = None,
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) -> None:
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(
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content_text,
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content_subject,
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) = await self.__generate_message_from_subject_and_event__(
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subject=subject, event=event, properties=properties, region=region
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)
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properties_dict = {
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"content_text": content_text,
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"content_subject": content_subject,
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"sender_email": "qifei.lu1994@gmail.com",
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"receiver_type": "email",
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}
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await self.__publish_notification__(
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channel=NotificationChannel.EMAIL,
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message=NotificationMessage(
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sender_id="aaabbbcccddd", # app_settings.SYSTEM_USER_ID,
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receiver_id=receiver_id,
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subject=subject,
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event=event,
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properties=(
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properties_dict.update(properties)
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if not properties
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else properties_dict
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),
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),
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)
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print(
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"this is message",
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NotificationMessage(
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sender_id="aaabbbcccddd", # app_settings.SYSTEM_USER_ID,
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receiver_id=receiver_id,
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subject=subject,
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event=event,
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properties=(
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properties_dict.update(properties)
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if not properties
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else properties_dict
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),
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),
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)
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async def send_sms_notification(
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self, receiver_id: str, subject: str, event: str, properties: dict = None
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) -> None:
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(
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content_text,
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content_subject,
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) = await self.__generate_message_from_subject_and_event__(
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subject=subject, event=event, properties=properties
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)
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properties_dict = {
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"content_text": content_text,
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"content_subject": content_subject,
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"sender_mobile": app_settings.SMS_FROM,
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"receiver_type": "mobile",
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}
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await self.__publish_notification__(
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channel=NotificationChannel.SMS,
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message=NotificationMessage(
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sender_id=app_settings.SYSTEM_USER_ID,
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receiver_id=receiver_id,
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subject=subject,
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event=event,
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properties=(
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properties_dict.update(properties)
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if not properties
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else properties_dict
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),
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),
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)
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async def enqueue_notification(
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self,
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channels: list[NotificationChannel],
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receiver_id: str,
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subject: str,
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event: str,
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properties: dict = None,
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) -> None:
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for channel in channels:
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if channel == NotificationChannel.CHAT_MESSAGE:
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await self.send_chat_message_notification(
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receiver_id=receiver_id,
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subject=subject,
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event=event,
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properties=properties,
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)
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elif channel == NotificationChannel.IN_APP:
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await self.send_in_app_notification(
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receiver_id=receiver_id,
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subject=subject,
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event=event,
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properties=properties,
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)
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elif channel == NotificationChannel.EMAIL:
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print("should get here")
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await self.send_email_notification(
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receiver_id=receiver_id,
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subject=subject,
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event=event,
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properties=properties,
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)
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elif channel == NotificationChannel.SMS:
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await self.send_sms_notification(
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receiver_id=receiver_id,
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subject=subject,
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event=event,
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properties=properties,
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)
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else:
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raise RuntimeError(f"Unsupported notification channel: {channel}")
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