"""Customers router.

GET  /api/customers
GET  /api/customers/{id}
POST /api/customers
"""
from typing import List

from fastapi import APIRouter, Depends, HTTPException
from sqlalchemy.orm import Session

from app.database import get_db
from app.routers.auth import require_admin
from app.models import Customer
from app.schemas import CustomerOut, CustomerRegister

router = APIRouter(dependencies=[Depends(require_admin)])


@router.get("", response_model=List[CustomerOut])
def list_customers(db: Session = Depends(get_db)):
    return db.query(Customer).order_by(Customer.created_at.desc()).all()


@router.get("/{customer_id}", response_model=CustomerOut)
def get_customer(customer_id, db: Session = Depends(get_db)):
    customer = db.query(Customer).filter(Customer.id == customer_id).first()
    if customer is None:
        raise HTTPException(status_code=404, detail="customer not found")
    return customer


@router.post("", response_model=CustomerOut)
def create_customer(body: CustomerRegister, db: Session = Depends(get_db)):
    email = body.email.strip().lower()
    existing = db.query(Customer).filter(Customer.email == email).first()
    if existing is not None:
        raise HTTPException(status_code=409, detail="email already registered")
    customer = Customer(email=email, name=body.name, shipping_addr=body.shipping_addr or {})
    db.add(customer)
    db.commit()
    db.refresh(customer)
    return customer