major refactoring adding vendor and customer features

app/api/v1/public/vendors/cart.py

@@ -0,0 +1,164 @@
+# app/api/v1/public/vendors/cart.py
+"""
+Shopping cart endpoints (customer-facing).
+"""
+
+import logging
+from fastapi import APIRouter, Depends, Path, Body
+from sqlalchemy.orm import Session
+from pydantic import BaseModel, Field
+
+from app.core.database import get_db
+from app.services.cart_service import cart_service
+from models.database.vendor import Vendor
+
+router = APIRouter()
+logger = logging.getLogger(__name__)
+
+
+class AddToCartRequest(BaseModel):
+    """Request model for adding to cart."""
+    product_id: int = Field(..., description="Product ID to add")
+    quantity: int = Field(1, ge=1, description="Quantity to add")
+
+
+class UpdateCartItemRequest(BaseModel):
+    """Request model for updating cart item."""
+    quantity: int = Field(..., ge=1, description="New quantity")
+
+
+@router.get("/{vendor_id}/cart/{session_id}")
+def get_cart(
+        vendor_id: int = Path(..., description="Vendor ID"),
+        session_id: str = Path(..., description="Session ID"),
+        db: Session = Depends(get_db),
+):
+    """
+    Get shopping cart contents.
+
+    No authentication required - uses session ID.
+    """
+    # Verify vendor exists
+    vendor = db.query(Vendor).filter(
+        Vendor.id == vendor_id,
+        Vendor.is_active == True
+    ).first()
+
+    if not vendor:
+        from app.exceptions import VendorNotFoundException
+        raise VendorNotFoundException(str(vendor_id), identifier_type="id")
+
+    cart = cart_service.get_cart(
+        db=db,
+        vendor_id=vendor_id,
+        session_id=session_id
+    )
+
+    return cart
+
+
+@router.post("/{vendor_id}/cart/{session_id}/items")
+def add_to_cart(
+        vendor_id: int = Path(..., description="Vendor ID"),
+        session_id: str = Path(..., description="Session ID"),
+        cart_data: AddToCartRequest = Body(...),
+        db: Session = Depends(get_db),
+):
+    """
+    Add product to cart.
+
+    No authentication required - uses session ID.
+    """
+    # Verify vendor
+    vendor = db.query(Vendor).filter(
+        Vendor.id == vendor_id,
+        Vendor.is_active == True
+    ).first()
+
+    if not vendor:
+        from app.exceptions import VendorNotFoundException
+        raise VendorNotFoundException(str(vendor_id), identifier_type="id")
+
+    result = cart_service.add_to_cart(
+        db=db,
+        vendor_id=vendor_id,
+        session_id=session_id,
+        product_id=cart_data.product_id,
+        quantity=cart_data.quantity
+    )
+
+    return result
+
+
+@router.put("/{vendor_id}/cart/{session_id}/items/{product_id}")
+def update_cart_item(
+        vendor_id: int = Path(..., description="Vendor ID"),
+        session_id: str = Path(..., description="Session ID"),
+        product_id: int = Path(..., description="Product ID"),
+        cart_data: UpdateCartItemRequest = Body(...),
+        db: Session = Depends(get_db),
+):
+    """Update cart item quantity."""
+    # Verify vendor
+    vendor = db.query(Vendor).filter(
+        Vendor.id == vendor_id,
+        Vendor.is_active == True
+    ).first()
+
+    if not vendor:
+        from app.exceptions import VendorNotFoundException
+        raise VendorNotFoundException(str(vendor_id), identifier_type="id")
+
+    result = cart_service.update_cart_item(
+        db=db,
+        vendor_id=vendor_id,
+        session_id=session_id,
+        product_id=product_id,
+        quantity=cart_data.quantity
+    )
+
+    return result
+
+
+@router.delete("/{vendor_id}/cart/{session_id}/items/{product_id}")
+def remove_from_cart(
+        vendor_id: int = Path(..., description="Vendor ID"),
+        session_id: str = Path(..., description="Session ID"),
+        product_id: int = Path(..., description="Product ID"),
+        db: Session = Depends(get_db),
+):
+    """Remove item from cart."""
+    # Verify vendor
+    vendor = db.query(Vendor).filter(
+        Vendor.id == vendor_id,
+        Vendor.is_active == True
+    ).first()
+
+    if not vendor:
+        from app.exceptions import VendorNotFoundException
+        raise VendorNotFoundException(str(vendor_id), identifier_type="id")
+
+    result = cart_service.remove_from_cart(
+        db=db,
+        vendor_id=vendor_id,
+        session_id=session_id,
+        product_id=product_id
+    )
+
+    return result
+
+
+@router.delete("/{vendor_id}/cart/{session_id}")
+def clear_cart(
+        vendor_id: int = Path(..., description="Vendor ID"),
+        session_id: str = Path(..., description="Session ID"),
+        db: Session = Depends(get_db),
+):
+    """Clear all items from cart."""
+    result = cart_service.clear_cart(
+        db=db,
+        vendor_id=vendor_id,
+        session_id=session_id
+    )
+
+    return result