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padelclub_backend/shop/signals.py

381 lines
14 KiB

from django.db.models.signals import pre_save, post_delete
from django.dispatch import receiver
from django.core.mail import send_mail
from django.conf import settings
from django.urls import reverse
from .models import Order, OrderItem, OrderStatus
from django.db import transaction
from django.contrib.auth.signals import user_logged_in
from .cart import transfer_cart
@receiver([pre_save, post_delete], sender=Order)
def send_order_notification(sender, instance, **kwargs):
"""Send an email notification when an order is created, updated, or deleted."""
# For pre_save, we need to check if the instance exists in the database
if kwargs.get('signal', None) == pre_save:
try:
# Get the current instance from the database
old_instance = Order.objects.get(pk=instance.pk)
# Only send notification if status has changed
if old_instance.status != instance.status:
# Execute on commit to ensure DB consistency
transaction.on_commit(lambda: _send_order_email(instance, old_status=old_instance.status, **kwargs))
except Order.DoesNotExist:
# This is a new instance (creation)
# You might want to handle creation differently or just pass
pass
else:
# Handle post_delete
transaction.on_commit(lambda: _send_order_email(instance, **kwargs))
def _send_order_email(instance, old_status=None, **kwargs):
# Skip processing for PENDING orders
if instance.status == OrderStatus.PENDING:
return
# Determine action type
if 'signal' in kwargs and kwargs['signal'] == post_delete:
action = "DELETED"
elif old_status is None:
action = "CREATED"
else:
action = "UPDATED"
if action in ["DELETED", "CREATED"]:
return # No emails for these actions
# Build common email components
order_details = _get_order_details(instance)
items_list = _build_items_list(instance.id, action)
# Send internal notification
_send_internal_notification(instance, action, order_details, items_list)
# Send customer notification if applicable
if order_details['customer_email']:
_send_customer_notification(instance, order_details, items_list)
def _get_order_details(instance):
"""Extract and build order details dictionary."""
# Get customer info
customer_email = None
if instance.user:
customer_info = f"Utilisateur: {instance.user.email}"
customer_email = instance.user.email
elif instance.guest_user:
customer_info = f"Invité: {instance.guest_user.email} ({instance.guest_user.phone})"
customer_email = instance.guest_user.email
else:
customer_info = "Client inconnu"
# Translate statuses
status_fr_map = {
"PENDING": "EN ATTENTE", "PAID": "PAYÉE",
"SHIPPED": "EXPÉDIÉE", "DELIVERED": "LIVRÉE", "CANCELED": "ANNULÉE"
}
payment_status_fr_map = {
"UNPAID": "NON PAYÉE", "PAID": "PAYÉE", "FAILED": "ÉCHOUÉE"
}
# Calculate discount information
has_coupon = instance.coupon is not None
coupon_info = ""
final_price = instance.total_price
if has_coupon:
coupon_code = instance.coupon.code
discount_amount = instance.discount_amount
final_price = instance.get_total_after_discount()
if instance.coupon.discount_percent > 0:
coupon_info = f"Code promo: {coupon_code} ({instance.coupon.discount_percent}%)"
else:
coupon_info = f"Code promo: {coupon_code} (€{discount_amount})"
return {
'order_id': instance.id,
'status': instance.status,
'status_fr': status_fr_map.get(instance.status, instance.status),
'payment_status': instance.payment_status,
'payment_status_fr': payment_status_fr_map.get(instance.payment_status, instance.payment_status),
'total_price': instance.total_price,
'has_coupon': has_coupon,
'coupon_info': coupon_info,
'discount_amount': instance.discount_amount if has_coupon else 0,
'final_price': final_price,
'customer_info': customer_info,
'customer_email': customer_email,
'date_ordered': instance.date_ordered,
'admin_url': f"{settings.SHOP_SITE_ROOT_URL}{reverse('admin:shop_order_change', args=[instance.id])}"
}
def _build_items_list(order_id, action):
"""Build the list of order items."""
items_list = ""
if action != "DELETED":
order_items = OrderItem.objects.filter(order_id=order_id).select_related('product', 'color', 'size')
for item in order_items:
color = item.color.name if item.color else "N/A"
size = item.size.name if item.size else "N/A"
items_list += f"- {item.quantity}x {item.product.title} (Couleur: {color}, Taille: {size}, Prix: {item.price}€)\n"
return items_list
def _translate_action(action):
"""Translate action to French."""
translations = {
"CREATED": "CRÉÉE", "UPDATED": "MISE À JOUR", "DELETED": "SUPPRIMÉE"
}
return translations.get(action, action)
def _send_internal_notification(instance, action, order_details, items_list):
"""Send notification email to shop managers."""
action_fr = _translate_action(action)
# Build price information with coupon details if applicable
price_info = f"Prix total: {order_details['total_price']}"
server = ""
if settings.DEBUG:
server = "DEBUG: "
if order_details['has_coupon']:
price_info = f"""
Prix total: {order_details['total_price']}
{order_details['coupon_info']}
Réduction: -{order_details['discount_amount']}
Montant payé: {order_details['final_price']}"""
subject = f"{server}Commande #{order_details['order_id']} {action_fr}: {order_details['status_fr']}"
message = f"""
La commande #{order_details['order_id']} a été {action_fr.lower()}
Statut: {order_details['status_fr']}
Statut de paiement: {order_details['payment_status_fr']}
{price_info}
{order_details['customer_info']}
Articles:
{items_list}
Voir la commande dans le panneau d'administration: {order_details['admin_url']}
Ceci est un message automatique. Merci de ne pas répondre.
"""
# Send internal email
recipient_list = [email for name, email in settings.SHOP_MANAGERS]
if not recipient_list:
recipient_list = [settings.DEFAULT_FROM_EMAIL]
send_mail(
subject=subject,
message=message,
from_email=settings.DEFAULT_FROM_EMAIL,
recipient_list=recipient_list,
fail_silently=False,
)
def _send_customer_notification(instance, order_details, items_list):
"""Send appropriate notification email to customer based on order status."""
# Common email variables
contact_email = settings.SHOP_SUPPORT_EMAIL
shop_url = f"{settings.SHOP_SITE_ROOT_URL}/shop"
date_formatted = order_details['date_ordered'].strftime('%d/%m/%Y')
# Determine email content based on status and payment status
email_content = _get_customer_email_content(
instance.status,
order_details['payment_status'],
order_details['order_id'],
date_formatted,
order_details['status_fr'],
order_details['total_price'],
order_details['has_coupon'],
order_details['coupon_info'],
order_details['discount_amount'],
order_details['final_price'],
items_list,
contact_email,
shop_url
)
# Skip if no email content returned
if not email_content:
return
# Send email to customer
send_mail(
subject=email_content['subject'],
message=email_content['message'],
from_email=settings.DEFAULT_FROM_EMAIL,
recipient_list=[order_details['customer_email']],
fail_silently=False,
)
def _get_customer_email_content(status, payment_status, order_id, date, status_fr,
total_price, has_coupon, coupon_info, discount_amount,
final_price, items_list, contact_email, shop_url):
"""Get the appropriate customer email content based on order status."""
# Build price information with coupon details if applicable
price_info = f"Prix total: {total_price}"
if has_coupon:
price_info = f"""Prix total: {total_price}
{coupon_info}
Réduction: -{discount_amount}
Montant payé: {final_price}"""
# Payment confirmation email
if status == OrderStatus.PAID and payment_status == "PAID":
return {
'subject': f"Confirmation de votre commande #{order_id} - Padel Club",
'message': _build_payment_confirmation_email(order_id, date, status_fr,
price_info, items_list,
contact_email, shop_url)
}
# Order status update email
elif status in [OrderStatus.SHIPPED, OrderStatus.DELIVERED, OrderStatus.CANCELED]:
status_message = {
OrderStatus.SHIPPED: "Votre commande a été expédiée et est en cours de livraison.",
OrderStatus.DELIVERED: "Votre commande a été livrée. Nous espérons que vous apprécierez vos produits !",
OrderStatus.CANCELED: "Votre commande a été annulée. Si vous n'êtes pas à l'origine de cette annulation, veuillez nous contacter immédiatement."
}.get(status, "")
return {
'subject': f"Mise à jour de votre commande #{order_id} - Padel Club",
'message': _build_status_update_email(order_id, date, status_message, status_fr,
price_info, items_list, contact_email)
}
# Payment issue notification
elif payment_status == "FAILED":
return {
'subject': f"Problème de paiement pour votre commande #{order_id} - Padel Club",
'message': _build_payment_issue_email(order_id, date, price_info,
items_list, contact_email, shop_url)
}
# Payment reminder for unpaid orders
elif payment_status == "UNPAID" and status != OrderStatus.PENDING:
return {
'subject': f"Rappel de paiement pour votre commande #{order_id} - Padel Club",
'message': _build_payment_reminder_email(order_id, date, price_info,
items_list, contact_email)
}
# No email needed
return None
def _build_payment_confirmation_email(order_id, date, status_fr, price_info, items_list, contact_email, shop_url):
"""Build payment confirmation email message."""
return f"""
Bonjour,
Nous vous remercions pour votre commande sur Padel Club !
Récapitulatif de votre commande #{order_id} du {date} :
Statut: {status_fr}
{price_info}
Détail de votre commande :
{items_list}
IMPORTANT - COMMENT RÉCUPÉRER VOTRE COMMANDE :
Notre boutique fonctionne entre amis 'Padel Club'. Nous allons préparer votre commande et vous la remettre en main propre lors d'une prochaine session de padel ! Aucune expédition n'est prévue, nous vous remettrons directement vos articles sur place.
Pour toute question concernant votre commande, n'hésitez pas à contacter notre service client :
{contact_email}
Visitez notre boutique pour découvrir d'autres produits :
{shop_url}
Merci de votre confiance et à bientôt sur Padel Club !
L'équipe Padel Club
"""
def _build_status_update_email(order_id, date, status_message, status_fr, price_info, items_list, contact_email):
"""Build status update email message."""
return f"""
Bonjour,
Mise à jour concernant votre commande Padel Club #{order_id} du {date} :
{status_message}
Statut actuel: {status_fr}
{price_info}
Détail de votre commande :
{items_list}
Pour toute question concernant votre commande, n'hésitez pas à contacter notre service client :
{contact_email}
Merci de votre confiance et à bientôt sur Padel Club !
L'équipe Padel Club
"""
def _build_payment_issue_email(order_id, date, price_info, items_list, contact_email, shop_url):
"""Build payment issue email message."""
return f"""
Bonjour,
Nous avons rencontré un problème lors du traitement du paiement de votre commande Padel Club #{order_id}.
Détails de la commande :
Date: {date}
{price_info}
Articles:
{items_list}
Veuillez vérifier vos informations de paiement et réessayer. Si le problème persiste, n'hésitez pas à contacter notre service client :
{contact_email}
Vous pouvez également visiter notre boutique pour finaliser votre achat :
{shop_url}
Merci de votre compréhension.
L'équipe Padel Club
"""
def _build_payment_reminder_email(order_id, date, price_info, items_list, contact_email):
"""Build payment reminder email message."""
return f"""
Bonjour,
Nous vous rappelons que votre commande Padel Club #{order_id} du {date} n'a pas encore été payée.
Détails de la commande :
{price_info}
Articles:
{items_list}
Pour finaliser votre commande, veuillez procéder au paiement dès que possible.
Si vous rencontrez des difficultés ou si vous avez des questions, n'hésitez pas à contacter notre service client :
{contact_email}
Merci de votre confiance.
L'équipe Padel Club
"""
@receiver(user_logged_in)
def user_logged_in_handler(sender, request, user, **kwargs):
"""
When a user logs in, transfer any cart items from their anonymous session
"""
# Get the anonymous session key
if hasattr(request, 'session') and not request.session.is_empty():
anonymous_session_key = request.session.session_key
# After the user logs in, the session key changes
# So we transfer cart from the old session to the new session
if anonymous_session_key:
transfer_cart(request, anonymous_session_key)