Files
twitch-drop-notifier/core/signals.py

102 lines
3.5 KiB
Python

import logging
import os
from typing import TYPE_CHECKING
from discord_webhook import DiscordWebhook
from django.db.models.manager import BaseManager
from django.db.models.signals import post_save
from django.dispatch import receiver
from core.discord import generate_game_message, generate_owner_message
from core.models import DropCampaign, Game, GameSubscription, Owner, OwnerSubscription, User
if TYPE_CHECKING:
import requests
from django.db.models.manager import BaseManager
logger: logging.Logger = logging.getLogger(__name__)
@receiver(signal=post_save, sender=User)
def handle_user_signed_up(sender: User, instance: User, created: bool, **kwargs) -> None: # noqa: ANN003, ARG001, FBT001
"""Send a message to Discord when a user signs up.
Webhook URL is read from .env file.
Args:
sender (User): The model we are sending the signal from.
instance (User): The instance of the model that was created.
created (bool): Whether the instance was created or updated.
**kwargs: Additional keyword arguments.
"""
if not created:
logger.debug("User '%s' was updated.", instance.username)
return
webhook_url: str | None = os.getenv("DISCORD_WEBHOOK_URL")
if not webhook_url:
logger.error("No webhook URL provided.")
return
webhook = DiscordWebhook(
url=webhook_url,
content=f"New user signed up: '{instance.username}'",
username="TTVDrops",
rate_limit_retry=True,
)
response: requests.Response = webhook.execute()
logger.debug(response)
@receiver(signal=post_save, sender=DropCampaign)
def notify_users_of_new_drop(sender: DropCampaign, instance: DropCampaign, created: bool, **kwargs) -> None: # noqa: ANN003, ARG001, FBT001
"""Notify users of a new drop campaign.
Args:
sender (DropCampaign): The model we are sending the signal from.
instance (DropCampaign): The instance of the model that was created.
created (bool): Whether the instance was created or updated.
**kwargs: Additional keyword arguments.
"""
if not created:
logger.debug("Drop campaign '%s' was updated.", instance.name)
return
game: Game | None = instance.game
if not game:
return
owner: Owner = game.owner # type: ignore # noqa: PGH003
# Notify users subscribed to the game
game_subs: BaseManager[GameSubscription] = GameSubscription.objects.filter(game=game)
for sub in game_subs:
if not sub.webhook.url:
logger.error("No webhook URL provided.")
return
webhook = DiscordWebhook(
url=sub.webhook.url,
content=generate_game_message(instance=instance, game=game, sub=sub),
username=f"{game.name} drop.",
rate_limit_retry=True,
)
response: requests.Response = webhook.execute()
logger.debug(response)
# Notify users subscribed to the owner
owner_subs: BaseManager[OwnerSubscription] = OwnerSubscription.objects.filter(owner=owner)
for sub in owner_subs:
if not sub.webhook.url:
logger.error("No webhook URL provided.")
return
webhook = DiscordWebhook(
url=sub.webhook.url,
content=generate_owner_message(instance=instance, owner=owner, sub=sub),
username=f"{owner.name} drop.",
rate_limit_retry=True,
)
response: requests.Response = webhook.execute()
logger.debug(response)