update

apps/accounts/services/__init__.py

@@ -0,0 +1,11 @@
+"""
+Accounts Services Package
+
+This package contains business logic services for account management,
+including social provider management, user authentication, and profile services.
+"""
+
+from .social_provider_service import SocialProviderService
+from .user_deletion_service import UserDeletionService
+
+__all__ = ['SocialProviderService', 'UserDeletionService']

apps/accounts/services/notification_service.py

@@ -0,0 +1,351 @@
+"""
+Notification service for creating and managing user notifications.
+
+This service handles the creation, delivery, and management of notifications
+for various events including submission approvals/rejections.
+"""
+
+from django.utils import timezone
+from django.contrib.contenttypes.models import ContentType
+from django.template.loader import render_to_string
+from django.conf import settings
+from django.db import models
+from typing import Optional, Dict, Any, List
+from datetime import datetime, timedelta
+import logging
+
+from apps.accounts.models import User, UserNotification, NotificationPreference
+from django_forwardemail.services import EmailService
+
+logger = logging.getLogger(__name__)
+
+
+class NotificationService:
+    """Service for creating and managing user notifications."""
+
+    @staticmethod
+    def create_notification(
+        user: User,
+        notification_type: str,
+        title: str,
+        message: str,
+        related_object: Optional[Any] = None,
+        priority: str = UserNotification.Priority.NORMAL,
+        extra_data: Optional[Dict[str, Any]] = None,
+        expires_at: Optional[datetime] = None,
+    ) -> UserNotification:
+        """
+        Create a new notification for a user.
+
+        Args:
+            user: The user to notify
+            notification_type: Type of notification (from UserNotification.NotificationType)
+            title: Notification title
+            message: Notification message
+            related_object: Optional related object (submission, review, etc.)
+            priority: Notification priority
+            extra_data: Additional data to store with notification
+            expires_at: When the notification expires
+
+        Returns:
+            UserNotification: The created notification
+        """
+        # Get content type and object ID if related object provided
+        content_type = None
+        object_id = None
+        if related_object:
+            content_type = ContentType.objects.get_for_model(related_object)
+            object_id = related_object.pk
+
+        # Create the notification
+        notification = UserNotification.objects.create(
+            user=user,
+            notification_type=notification_type,
+            title=title,
+            message=message,
+            content_type=content_type,
+            object_id=object_id,
+            priority=priority,
+            extra_data=extra_data or {},
+            expires_at=expires_at,
+        )
+
+        # Send notification through appropriate channels
+        NotificationService._send_notification(notification)
+
+        return notification
+
+    @staticmethod
+    def create_submission_approved_notification(
+        user: User,
+        submission_object: Any,
+        submission_type: str,
+        additional_message: str = "",
+    ) -> UserNotification:
+        """
+        Create a notification for submission approval.
+
+        Args:
+            user: User who submitted the content
+            submission_object: The approved submission object
+            submission_type: Type of submission (e.g., "park photo", "ride review")
+            additional_message: Additional message from moderator
+
+        Returns:
+            UserNotification: The created notification
+        """
+        title = f"Your {submission_type} has been approved!"
+        message = f"Great news! Your {submission_type} submission has been approved and is now live on ThrillWiki."
+
+        if additional_message:
+            message += f"\n\nModerator note: {additional_message}"
+
+        extra_data = {
+            "submission_type": submission_type,
+            "moderator_message": additional_message,
+            "approved_at": timezone.now().isoformat(),
+        }
+
+        return NotificationService.create_notification(
+            user=user,
+            notification_type=UserNotification.NotificationType.SUBMISSION_APPROVED,
+            title=title,
+            message=message,
+            related_object=submission_object,
+            priority=UserNotification.Priority.NORMAL,
+            extra_data=extra_data,
+        )
+
+    @staticmethod
+    def create_submission_rejected_notification(
+        user: User,
+        submission_object: Any,
+        submission_type: str,
+        rejection_reason: str,
+        additional_message: str = "",
+    ) -> UserNotification:
+        """
+        Create a notification for submission rejection.
+
+        Args:
+            user: User who submitted the content
+            submission_object: The rejected submission object
+            submission_type: Type of submission (e.g., "park photo", "ride review")
+            rejection_reason: Reason for rejection
+            additional_message: Additional message from moderator
+
+        Returns:
+            UserNotification: The created notification
+        """
+        title = f"Your {submission_type} needs attention"
+        message = f"Your {submission_type} submission has been reviewed and needs some changes before it can be approved."
+        message += f"\n\nReason: {rejection_reason}"
+
+        if additional_message:
+            message += f"\n\nModerator note: {additional_message}"
+
+        message += "\n\nYou can edit and resubmit your content from your profile page."
+
+        extra_data = {
+            "submission_type": submission_type,
+            "rejection_reason": rejection_reason,
+            "moderator_message": additional_message,
+            "rejected_at": timezone.now().isoformat(),
+        }
+
+        return NotificationService.create_notification(
+            user=user,
+            notification_type=UserNotification.NotificationType.SUBMISSION_REJECTED,
+            title=title,
+            message=message,
+            related_object=submission_object,
+            priority=UserNotification.Priority.HIGH,
+            extra_data=extra_data,
+        )
+
+    @staticmethod
+    def create_submission_pending_notification(
+        user: User, submission_object: Any, submission_type: str
+    ) -> UserNotification:
+        """
+        Create a notification for submission pending review.
+
+        Args:
+            user: User who submitted the content
+            submission_object: The pending submission object
+            submission_type: Type of submission (e.g., "park photo", "ride review")
+
+        Returns:
+            UserNotification: The created notification
+        """
+        title = f"Your {submission_type} is under review"
+        message = f"Thanks for your {submission_type} submission! It's now under review by our moderation team."
+        message += "\n\nWe'll notify you once it's been reviewed. This usually takes 1-2 business days."
+
+        extra_data = {
+            "submission_type": submission_type,
+            "submitted_at": timezone.now().isoformat(),
+        }
+
+        return NotificationService.create_notification(
+            user=user,
+            notification_type=UserNotification.NotificationType.SUBMISSION_PENDING,
+            title=title,
+            message=message,
+            related_object=submission_object,
+            priority=UserNotification.Priority.LOW,
+            extra_data=extra_data,
+        )
+
+    @staticmethod
+    def _send_notification(notification: UserNotification) -> None:
+        """
+        Send notification through appropriate channels based on user preferences.
+
+        Args:
+            notification: The notification to send
+        """
+        user = notification.user
+
+        # Get user's notification preferences
+        try:
+            preferences = user.notification_preference
+        except NotificationPreference.DoesNotExist:
+            # Create default preferences if they don't exist
+            preferences = NotificationPreference.objects.create(user=user)
+
+        # Send email notification if enabled
+        if preferences.should_send_notification(
+            notification.notification_type, "email"
+        ):
+            NotificationService._send_email_notification(notification)
+
+        # Toast notifications are always created (the notification object itself)
+        # The frontend will display them as toast notifications based on preferences
+
+    @staticmethod
+    def _send_email_notification(notification: UserNotification) -> None:
+        """
+        Send email notification to user using the custom ForwardEmail service.
+
+        Args:
+            notification: The notification to send via email
+        """
+        try:
+            user = notification.user
+
+            # Prepare email context
+            context = {
+                "user": user,
+                "notification": notification,
+                "site_name": "ThrillWiki",
+                "site_url": getattr(settings, "SITE_URL", "https://thrillwiki.com"),
+            }
+
+            # Render email templates
+            subject = f"ThrillWiki: {notification.title}"
+            html_message = render_to_string("emails/notification.html", context)
+            plain_message = render_to_string("emails/notification.txt", context)
+
+            # Send email using custom ForwardEmail service
+            EmailService.send_email(
+                to=user.email,
+                subject=subject,
+                text=plain_message,
+                html=html_message,
+            )
+
+            # Mark as sent
+            notification.email_sent = True
+            notification.email_sent_at = timezone.now()
+            notification.save(update_fields=["email_sent", "email_sent_at"])
+
+            logger.info(
+                f"Email notification sent to {user.email} for notification {notification.id}"
+            )
+
+        except Exception as e:
+            logger.error(
+                f"Failed to send email notification {notification.id}: {str(e)}"
+            )
+
+    @staticmethod
+    def get_user_notifications(
+        user: User,
+        unread_only: bool = False,
+        notification_types: Optional[List[str]] = None,
+        limit: Optional[int] = None,
+    ) -> List[UserNotification]:
+        """
+        Get notifications for a user.
+
+        Args:
+            user: User to get notifications for
+            unread_only: Only return unread notifications
+            notification_types: Filter by notification types
+            limit: Limit number of results
+
+        Returns:
+            List[UserNotification]: List of notifications
+        """
+        queryset = UserNotification.objects.filter(user=user)
+
+        if unread_only:
+            queryset = queryset.filter(is_read=False)
+
+        if notification_types:
+            queryset = queryset.filter(notification_type__in=notification_types)
+
+        # Exclude expired notifications
+        queryset = queryset.filter(
+            models.Q(expires_at__isnull=True) | models.Q(expires_at__gt=timezone.now())
+        )
+
+        if limit:
+            queryset = queryset[:limit]
+
+        return list(queryset)
+
+    @staticmethod
+    def mark_notifications_read(
+        user: User, notification_ids: Optional[List[int]] = None
+    ) -> int:
+        """
+        Mark notifications as read for a user.
+
+        Args:
+            user: User whose notifications to mark as read
+            notification_ids: Specific notification IDs to mark as read (if None, marks all)
+
+        Returns:
+            int: Number of notifications marked as read
+        """
+        queryset = UserNotification.objects.filter(user=user, is_read=False)
+
+        if notification_ids:
+            queryset = queryset.filter(id__in=notification_ids)
+
+        return queryset.update(is_read=True, read_at=timezone.now())
+
+    @staticmethod
+    def cleanup_old_notifications(days: int = 90) -> int:
+        """
+        Clean up old read notifications.
+
+        Args:
+            days: Number of days to keep read notifications
+
+        Returns:
+            int: Number of notifications deleted
+        """
+        cutoff_date = timezone.now() - timedelta(days=days)
+
+        old_notifications = UserNotification.objects.filter(
+            is_read=True, read_at__lt=cutoff_date
+        )
+
+        count = old_notifications.count()
+        old_notifications.delete()
+
+        logger.info(f"Cleaned up {count} old notifications")
+        return count

apps/accounts/services/social_provider_service.py

@@ -0,0 +1,257 @@
+"""
+Social Provider Management Service
+
+This service handles the business logic for connecting and disconnecting
+social authentication providers while ensuring users never lock themselves
+out of their accounts.
+"""
+
+from typing import Dict, List, Tuple, TYPE_CHECKING
+from django.contrib.auth import get_user_model
+from allauth.socialaccount.models import SocialApp
+from allauth.socialaccount.providers import registry
+from django.contrib.sites.shortcuts import get_current_site
+from django.http import HttpRequest
+import logging
+
+if TYPE_CHECKING:
+    from apps.accounts.models import User
+else:
+    User = get_user_model()
+
+logger = logging.getLogger(__name__)
+
+
+class SocialProviderService:
+    """Service for managing social provider connections."""
+
+    @staticmethod
+    def can_disconnect_provider(user: User, provider: str) -> Tuple[bool, str]:
+        """
+        Check if a user can safely disconnect a social provider.
+
+        Args:
+            user: The user attempting to disconnect
+            provider: The provider to disconnect (e.g., 'google', 'discord')
+
+        Returns:
+            Tuple of (can_disconnect: bool, reason: str)
+        """
+        try:
+            # Count remaining social accounts after disconnection
+            remaining_social_accounts = user.socialaccount_set.exclude(
+                provider=provider
+            ).count()
+
+            # Check if user has email/password auth
+            has_password_auth = (
+                user.email and
+                user.has_usable_password() and
+                bool(user.password)  # Not empty/unusable
+            )
+
+            # Allow disconnection only if alternative auth exists
+            can_disconnect = remaining_social_accounts > 0 or has_password_auth
+
+            if not can_disconnect:
+                if remaining_social_accounts == 0 and not has_password_auth:
+                    return False, "Cannot disconnect your only authentication method. Please set up a password or connect another social provider first."
+                elif not has_password_auth:
+                    return False, "Please set up email/password authentication before disconnecting this provider."
+                else:
+                    return False, "Cannot disconnect this provider at this time."
+
+            return True, "Provider can be safely disconnected."
+
+        except Exception as e:
+            logger.error(
+                f"Error checking disconnect permission for user {user.id}, provider {provider}: {e}")
+            return False, "Unable to verify disconnection safety. Please try again."
+
+    @staticmethod
+    def get_connected_providers(user: "User") -> List[Dict]:
+        """
+        Get all social providers connected to a user's account.
+
+        Args:
+            user: The user to check
+
+        Returns:
+            List of connected provider information
+        """
+        try:
+            connected_providers = []
+
+            for social_account in user.socialaccount_set.all():
+                can_disconnect, reason = SocialProviderService.can_disconnect_provider(
+                    user, social_account.provider
+                )
+
+                provider_info = {
+                    'provider': social_account.provider,
+                    'provider_name': social_account.get_provider().name,
+                    'uid': social_account.uid,
+                    'date_joined': social_account.date_joined,
+                    'can_disconnect': can_disconnect,
+                    'disconnect_reason': reason if not can_disconnect else None,
+                    'extra_data': social_account.extra_data
+                }
+
+                connected_providers.append(provider_info)
+
+            return connected_providers
+
+        except Exception as e:
+            logger.error(f"Error getting connected providers for user {user.id}: {e}")
+            return []
+
+    @staticmethod
+    def get_available_providers(request: HttpRequest) -> List[Dict]:
+        """
+        Get all available social providers for the current site.
+
+        Args:
+            request: The HTTP request
+
+        Returns:
+            List of available provider information
+        """
+        try:
+            site = get_current_site(request)
+            available_providers = []
+
+            # Get all social apps configured for this site
+            social_apps = SocialApp.objects.filter(sites=site).order_by('provider')
+
+            for social_app in social_apps:
+                try:
+                    provider = registry.by_id(social_app.provider)
+
+                    provider_info = {
+                        'id': social_app.provider,
+                        'name': provider.name,
+                        'auth_url': request.build_absolute_uri(
+                            f'/accounts/{social_app.provider}/login/'
+                        ),
+                        'connect_url': request.build_absolute_uri(
+                            f'/api/v1/auth/social/connect/{social_app.provider}/'
+                        )
+                    }
+
+                    available_providers.append(provider_info)
+
+                except Exception as e:
+                    logger.warning(
+                        f"Error processing provider {social_app.provider}: {e}")
+                    continue
+
+            return available_providers
+
+        except Exception as e:
+            logger.error(f"Error getting available providers: {e}")
+            return []
+
+    @staticmethod
+    def disconnect_provider(user: "User", provider: str) -> Tuple[bool, str]:
+        """
+        Disconnect a social provider from a user's account.
+
+        Args:
+            user: The user to disconnect from
+            provider: The provider to disconnect
+
+        Returns:
+            Tuple of (success: bool, message: str)
+        """
+        try:
+            # First check if disconnection is allowed
+            can_disconnect, reason = SocialProviderService.can_disconnect_provider(
+                user, provider)
+
+            if not can_disconnect:
+                return False, reason
+
+            # Find and delete the social account
+            social_accounts = user.socialaccount_set.filter(provider=provider)
+
+            if not social_accounts.exists():
+                return False, f"No {provider} account found to disconnect."
+
+            # Delete all social accounts for this provider (in case of duplicates)
+            deleted_count = social_accounts.count()
+            social_accounts.delete()
+
+            logger.info(
+                f"User {user.id} disconnected {deleted_count} {provider} account(s)")
+
+            return True, f"{provider.title()} account disconnected successfully."
+
+        except Exception as e:
+            logger.error(f"Error disconnecting {provider} for user {user.id}: {e}")
+            return False, f"Failed to disconnect {provider} account. Please try again."
+
+    @staticmethod
+    def get_auth_status(user: "User") -> Dict:
+        """
+        Get comprehensive authentication status for a user.
+
+        Args:
+            user: The user to check
+
+        Returns:
+            Dictionary with authentication status information
+        """
+        try:
+            connected_providers = SocialProviderService.get_connected_providers(user)
+
+            has_password_auth = (
+                user.email and
+                user.has_usable_password() and
+                bool(user.password)
+            )
+
+            auth_methods_count = len(connected_providers) + \
+                (1 if has_password_auth else 0)
+
+            return {
+                'user_id': user.id,
+                'username': user.username,
+                'email': user.email,
+                'has_password_auth': has_password_auth,
+                'connected_providers': connected_providers,
+                'total_auth_methods': auth_methods_count,
+                'can_disconnect_any': auth_methods_count > 1,
+                'requires_password_setup': not has_password_auth and len(connected_providers) == 1
+            }
+
+        except Exception as e:
+            logger.error(f"Error getting auth status for user {user.id}: {e}")
+            return {
+                'error': 'Unable to retrieve authentication status'
+            }
+
+    @staticmethod
+    def validate_provider_exists(provider: str) -> Tuple[bool, str]:
+        """
+        Validate that a social provider is configured and available.
+
+        Args:
+            provider: The provider ID to validate
+
+        Returns:
+            Tuple of (is_valid: bool, message: str)
+        """
+        try:
+            # Check if provider is registered with allauth
+            if provider not in registry.provider_map:
+                return False, f"Provider '{provider}' is not supported."
+
+            # Check if provider has a social app configured
+            if not SocialApp.objects.filter(provider=provider).exists():
+                return False, f"Provider '{provider}' is not configured on this site."
+
+            return True, f"Provider '{provider}' is valid and available."
+
+        except Exception as e:
+            logger.error(f"Error validating provider {provider}: {e}")
+            return False, "Unable to validate provider."

apps/accounts/services/user_deletion_service.py

@@ -0,0 +1,309 @@
+"""
+User Deletion Service
+
+This service handles user account deletion while preserving submissions
+and maintaining data integrity across the platform.
+"""
+
+from django.utils import timezone
+from django.db import transaction
+from django.contrib.auth import get_user_model
+from django.core.mail import send_mail
+from django.conf import settings
+from django.template.loader import render_to_string
+from typing import Dict, Any, Tuple, Optional
+import logging
+import secrets
+import string
+from datetime import datetime
+
+from apps.accounts.models import User
+
+logger = logging.getLogger(__name__)
+
+User = get_user_model()
+
+
+class UserDeletionRequest:
+    """Model for tracking user deletion requests."""
+
+    def __init__(self, user: User, verification_code: str, expires_at: datetime):
+        self.user = user
+        self.verification_code = verification_code
+        self.expires_at = expires_at
+        self.created_at = timezone.now()
+
+
+class UserDeletionService:
+    """Service for handling user account deletion with submission preservation."""
+
+    # In-memory storage for deletion requests (in production, use Redis or database)
+    _deletion_requests = {}
+
+    @staticmethod
+    def can_delete_user(user: User) -> Tuple[bool, Optional[str]]:
+        """
+        Check if a user can be safely deleted.
+
+        Args:
+            user: User to check for deletion eligibility
+
+        Returns:
+            Tuple[bool, Optional[str]]: (can_delete, reason_if_not)
+        """
+        # Prevent deletion of superusers
+        if user.is_superuser:
+            return False, "Cannot delete superuser accounts"
+
+        # Prevent deletion of staff/admin users
+        if user.is_staff:
+            return False, "Cannot delete staff accounts"
+
+        # Check for system users (if you have any special system accounts)
+        if hasattr(user, 'role') and user.role in ['ADMIN', 'MODERATOR']:
+            return False, "Cannot delete admin or moderator accounts"
+
+        return True, None
+
+    @staticmethod
+    def request_user_deletion(user: User) -> UserDeletionRequest:
+        """
+        Create a deletion request for a user and send verification email.
+
+        Args:
+            user: User requesting deletion
+
+        Returns:
+            UserDeletionRequest: The deletion request object
+
+        Raises:
+            ValueError: If user cannot be deleted
+        """
+        # Check if user can be deleted
+        can_delete, reason = UserDeletionService.can_delete_user(user)
+        if not can_delete:
+            raise ValueError(reason)
+
+        # Generate verification code
+        verification_code = ''.join(secrets.choice(
+            string.ascii_uppercase + string.digits) for _ in range(8))
+
+        # Set expiration (24 hours from now)
+        expires_at = timezone.now() + timezone.timedelta(hours=24)
+
+        # Create deletion request
+        deletion_request = UserDeletionRequest(user, verification_code, expires_at)
+
+        # Store request (in production, use Redis or database)
+        UserDeletionService._deletion_requests[verification_code] = deletion_request
+
+        # Send verification email
+        UserDeletionService._send_deletion_verification_email(
+            user, verification_code, expires_at)
+
+        return deletion_request
+
+    @staticmethod
+    def verify_and_delete_user(verification_code: str) -> Dict[str, Any]:
+        """
+        Verify deletion code and delete user account.
+
+        Args:
+            verification_code: Verification code from email
+
+        Returns:
+            Dict[str, Any]: Deletion result information
+
+        Raises:
+            ValueError: If verification code is invalid or expired
+        """
+        # Find deletion request
+        deletion_request = UserDeletionService._deletion_requests.get(verification_code)
+        if not deletion_request:
+            raise ValueError("Invalid verification code")
+
+        # Check if expired
+        if timezone.now() > deletion_request.expires_at:
+            # Clean up expired request
+            del UserDeletionService._deletion_requests[verification_code]
+            raise ValueError("Verification code has expired")
+
+        user = deletion_request.user
+
+        # Perform deletion
+        result = UserDeletionService.delete_user_preserve_submissions(user)
+
+        # Clean up deletion request
+        del UserDeletionService._deletion_requests[verification_code]
+
+        # Add verification info to result
+        result['deletion_request'] = {
+            'verification_code': verification_code,
+            'created_at': deletion_request.created_at,
+            'verified_at': timezone.now(),
+        }
+
+        return result
+
+    @staticmethod
+    def cancel_deletion_request(user: User) -> bool:
+        """
+        Cancel a pending deletion request for a user.
+
+        Args:
+            user: User whose deletion request to cancel
+
+        Returns:
+            bool: True if request was found and cancelled, False if no request found
+        """
+        # Find and remove any deletion requests for this user
+        to_remove = []
+        for code, request in UserDeletionService._deletion_requests.items():
+            if request.user.id == user.id:
+                to_remove.append(code)
+
+        for code in to_remove:
+            del UserDeletionService._deletion_requests[code]
+
+        return len(to_remove) > 0
+
+    @staticmethod
+    @transaction.atomic
+    def delete_user_preserve_submissions(user: User) -> Dict[str, Any]:
+        """
+        Delete a user account while preserving all their submissions.
+
+        Args:
+            user: User to delete
+
+        Returns:
+            Dict[str, Any]: Information about the deletion and preserved submissions
+        """
+        # Get or create the "deleted_user" placeholder
+        deleted_user_placeholder, created = User.objects.get_or_create(
+            username='deleted_user',
+            defaults={
+                'email': 'deleted@thrillwiki.com',
+                'first_name': 'Deleted',
+                'last_name': 'User',
+                'is_active': False,
+            }
+        )
+
+        # Count submissions before transfer
+        submission_counts = UserDeletionService._count_user_submissions(user)
+
+        # Transfer submissions to placeholder user
+        UserDeletionService._transfer_user_submissions(user, deleted_user_placeholder)
+
+        # Store user info before deletion
+        deleted_user_info = {
+            'username': user.username,
+            'user_id': getattr(user, 'user_id', user.id),
+            'email': user.email,
+            'date_joined': user.date_joined,
+        }
+
+        # Delete the user account
+        user.delete()
+
+        return {
+            'deleted_user': deleted_user_info,
+            'preserved_submissions': submission_counts,
+            'transferred_to': {
+                'username': deleted_user_placeholder.username,
+                'user_id': getattr(deleted_user_placeholder, 'user_id', deleted_user_placeholder.id),
+            }
+        }
+
+    @staticmethod
+    def _count_user_submissions(user: User) -> Dict[str, int]:
+        """Count all submissions for a user."""
+        counts = {}
+
+        # Count different types of submissions
+        # Note: These are placeholder counts - adjust based on your actual models
+        counts['park_reviews'] = getattr(
+            user, 'park_reviews', user.__class__.objects.none()).count()
+        counts['ride_reviews'] = getattr(
+            user, 'ride_reviews', user.__class__.objects.none()).count()
+        counts['uploaded_park_photos'] = getattr(
+            user, 'uploaded_park_photos', user.__class__.objects.none()).count()
+        counts['uploaded_ride_photos'] = getattr(
+            user, 'uploaded_ride_photos', user.__class__.objects.none()).count()
+        counts['top_lists'] = getattr(
+            user, 'top_lists', user.__class__.objects.none()).count()
+        counts['edit_submissions'] = getattr(
+            user, 'edit_submissions', user.__class__.objects.none()).count()
+        counts['photo_submissions'] = getattr(
+            user, 'photo_submissions', user.__class__.objects.none()).count()
+
+        return counts
+
+    @staticmethod
+    def _transfer_user_submissions(user: User, placeholder_user: User) -> None:
+        """Transfer all user submissions to placeholder user."""
+
+        # Transfer different types of submissions
+        # Note: Adjust these based on your actual model relationships
+
+        # Park reviews
+        if hasattr(user, 'park_reviews'):
+            user.park_reviews.all().update(user=placeholder_user)
+
+        # Ride reviews
+        if hasattr(user, 'ride_reviews'):
+            user.ride_reviews.all().update(user=placeholder_user)
+
+        # Uploaded photos
+        if hasattr(user, 'uploaded_park_photos'):
+            user.uploaded_park_photos.all().update(user=placeholder_user)
+
+        if hasattr(user, 'uploaded_ride_photos'):
+            user.uploaded_ride_photos.all().update(user=placeholder_user)
+
+        # Top lists
+        if hasattr(user, 'top_lists'):
+            user.top_lists.all().update(user=placeholder_user)
+
+        # Edit submissions
+        if hasattr(user, 'edit_submissions'):
+            user.edit_submissions.all().update(user=placeholder_user)
+
+        # Photo submissions
+        if hasattr(user, 'photo_submissions'):
+            user.photo_submissions.all().update(user=placeholder_user)
+
+    @staticmethod
+    def _send_deletion_verification_email(user: User, verification_code: str, expires_at: timezone.datetime) -> None:
+        """Send verification email for account deletion."""
+        try:
+            context = {
+                'user': user,
+                'verification_code': verification_code,
+                'expires_at': expires_at,
+                'site_name': 'ThrillWiki',
+                'site_url': getattr(settings, 'SITE_URL', 'https://thrillwiki.com'),
+            }
+
+            subject = 'ThrillWiki: Confirm Account Deletion'
+            html_message = render_to_string(
+                'emails/account_deletion_verification.html', context)
+            plain_message = render_to_string(
+                'emails/account_deletion_verification.txt', context)
+
+            send_mail(
+                subject=subject,
+                message=plain_message,
+                html_message=html_message,
+                from_email=settings.DEFAULT_FROM_EMAIL,
+                recipient_list=[user.email],
+                fail_silently=False,
+            )
+
+            logger.info(f"Deletion verification email sent to {user.email}")
+
+        except Exception as e:
+            logger.error(
+                f"Failed to send deletion verification email to {user.email}: {str(e)}")
+            raise