fix:bug

backend/app/routers/customers.py

@@ -0,0 +1,71 @@
+from typing import List
+
+from fastapi import APIRouter, Depends, HTTPException, status
+from sqlalchemy.orm import Session
+
+from backend.app.db import get_db
+from backend.app import models
+from backend.app.schemas import (
+    CustomerCreate,
+    CustomerRead,
+    CustomerUpdate,
+)
+
+
+router = APIRouter(prefix="/customers", tags=["customers"])
+
+
+@router.get("/", response_model=List[CustomerRead])
+async def list_customers(db: Session = Depends(get_db)):
+    customers = db.query(models.Customer).order_by(models.Customer.created_at.desc()).all()
+    return customers
+
+
+@router.post("/", response_model=CustomerRead, status_code=status.HTTP_201_CREATED)
+async def create_customer(payload: CustomerCreate, db: Session = Depends(get_db)):
+    customer = models.Customer(
+        name=payload.name,
+        contact_info=payload.contact_info,
+    )
+    db.add(customer)
+    db.commit()
+    db.refresh(customer)
+    return customer
+
+
+@router.get("/{customer_id}", response_model=CustomerRead)
+async def get_customer(customer_id: int, db: Session = Depends(get_db)):
+    customer = db.query(models.Customer).get(customer_id)
+    if not customer:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Customer not found")
+    return customer
+
+
+@router.put("/{customer_id}", response_model=CustomerRead)
+async def update_customer(
+    customer_id: int, payload: CustomerUpdate, db: Session = Depends(get_db)
+):
+    customer = db.query(models.Customer).get(customer_id)
+    if not customer:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Customer not found")
+
+    if payload.name is not None:
+        customer.name = payload.name
+    if payload.contact_info is not None:
+        customer.contact_info = payload.contact_info
+
+    db.commit()
+    db.refresh(customer)
+    return customer
+
+
+@router.delete("/{customer_id}", status_code=status.HTTP_204_NO_CONTENT)
+async def delete_customer(customer_id: int, db: Session = Depends(get_db)):
+    customer = db.query(models.Customer).get(customer_id)
+    if not customer:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Customer not found")
+
+    db.delete(customer)
+    db.commit()
+    return None
+