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FreeBug/backend/blueprints/notification/__init__.py

108 lines
4.1 KiB

from flask import Blueprint, jsonify, request, g
from utils.auth import auth_required
from db.model import User, Notification, db
from sqlalchemy import select, and_, desc
from datetime import datetime
import uuid
notification = Blueprint('notification', __name__)
@notification.route('/get', methods=['GET', 'POST'])
@auth_required()
def handle_notifications():
"""
Unified endpoint for handling notifications:
GET: Fetch notifications with optional before/after pagination
POST: Mark notifications as seen
Query Parameters for GET:
- before: UUID of notification to get older entries
- after: UUID of notification to get newer entries
- limit: Number of notifications to return (default: 10)
POST Body:
{
"notificationIds": ["uuid1", "uuid2", ...]
}
"""
if request.method == 'GET':
try:
current_user: User = g.current_user
limit: int = int(request.args.get('limit', 10))
before_id = request.args.get('before')
after_id = request.args.get('after')
# Base query
query = select(Notification).where(
Notification.userID == current_user.id
)
# Handle pagination
if before_id:
try:
reference_notification = db.session.execute(
select(Notification)
.where(and_(
Notification.id == uuid.UUID(before_id),
Notification.userID == current_user.id
))
).scalar()
if not reference_notification:
return jsonify({'message': 'Reference notification not found'}), 404
query = query.where(
Notification.notifDate < reference_notification.notifDate
)
except ValueError:
return jsonify({'message': 'Invalid notification ID format'}), 400
elif after_id:
try:
reference_notification = db.session.execute(
select(Notification)
.where(and_(
Notification.id == uuid.UUID(after_id),
Notification.userID == current_user.id
))
).scalar()
if not reference_notification:
return jsonify({'message': 'Reference notification not found'}), 404
query = query.where(
Notification.notifDate > reference_notification.notifDate
)
# For after queries, we need to reverse the order later
query = query.order_by(Notification.notifDate)
except ValueError:
return jsonify({'message': 'Invalid notification ID format'}), 400
else:
# Default ordering
query = query.order_by(desc(Notification.notifDate))
# Apply limit and execute query
query = query.limit(limit)
notifications = list(db.session.execute(query).scalars())
# Reverse the order for 'after' queries to maintain consistency
if after_id:
notifications.reverse()
# Format response
notif_list = [{
'id': str(notif.id),
'type': notif.notificationType,
'data': notif.notificationData,
'seen': notif.isSeen,
'date': notif.notifDate.isoformat()
} for notif in notifications]
return jsonify({
'notifications': notif_list,
'count': len(notif_list),
'hasMore': len(notif_list) == limit
}), 200
except Exception as e:
return jsonify({'message': f'An error occurred: {str(e)}'}), 500