Add wishlist feature and admin/analytics endpoints

Introduces a Wishlist model with related serializers, admin, and API endpoints for users to manage favorite products. Adds admin endpoints for wishlist management and a placeholder AnalyticsViewSet for future business intelligence features. Refactors permissions for commerce views, updates product filtering and ordering, and improves carrier and payment logic. Also includes minor VSCode settings and Zasilkovna client import updates.

backend/commerce/models.py

@@ -252,6 +252,13 @@ class Carrier(models.Model):
             if self.shipping_price is None:
                 self.shipping_price = self.get_price()
 
+        if self.pk:
+            if self.STATE == self.STATE.READY_TO_PICKUP and self.shipping_method == self.SHIPPING.STORE:
+                notify_Ready_to_pickup.delay(order=self.orders.first(), user=self.orders.first().user)
+                pass
+            else:
+                pass  
+
         super().save(*args, **kwargs)
 
     def get_price(self):
@@ -318,10 +325,10 @@ class Carrier(models.Model):
 
 class Payment(models.Model):
     class PAYMENT(models.TextChoices):
-        Site = "Site", "cz#Platba v obchodě"
-        STRIPE = "stripe", "cz#Bankovní převod"
-        CASH_ON_DELIVERY = "cash_on_delivery", "cz#Dobírka"
-    payment_method = models.CharField(max_length=30, choices=PAYMENT.choices, default=PAYMENT.Site)
+        SITE = "Site", "cz#Platba v obchodě", "de#Bezahlung im Geschäft"
+        STRIPE = "stripe", "cz#Platební Brána", "de#Zahlungsgateway"
+        CASH_ON_DELIVERY = "cash_on_delivery", "cz#Dobírka", "de#Nachnahme"
+    payment_method = models.CharField(max_length=30, choices=PAYMENT.choices, default=PAYMENT.SITE)
 
     #FIXME: potvrdit že logika platby funguje správně
     #veškera logika a interakce bude na stripu (třeba aktualizovaní objednávky na zaplacenou apod.)
@@ -715,4 +722,46 @@ class CartItem(models.Model):
 
     def save(self, *args, **kwargs):
         self.clean()
-        super().save(*args, **kwargs)
+        super().save(*args, **kwargs)
+
+
+# ------------------ WISHLIST ------------------
+
+class Wishlist(models.Model):
+    """User's wishlist for saving favorite products"""
+    user = models.OneToOneField(
+        settings.AUTH_USER_MODEL,
+        on_delete=models.CASCADE,
+        related_name="wishlist"
+    )
+    products = models.ManyToManyField(
+        Product,
+        blank=True,
+        related_name="wishlisted_by",
+        help_text="Products saved by the user"
+    )
+    created_at = models.DateTimeField(auto_now_add=True)
+    updated_at = models.DateTimeField(auto_now=True)
+
+    class Meta:
+        verbose_name = "Wishlist"
+        verbose_name_plural = "Wishlists"
+
+    def __str__(self):
+        return f"Wishlist for {self.user.email}"
+
+    def add_product(self, product):
+        """Add a product to wishlist"""
+        self.products.add(product)
+
+    def remove_product(self, product):
+        """Remove a product from wishlist"""
+        self.products.remove(product)
+
+    def has_product(self, product):
+        """Check if product is in wishlist"""
+        return self.products.filter(pk=product.pk).exists()
+
+    def get_products_count(self):
+        """Get count of products in wishlist"""
+        return self.products.count()