public function calculator(Request $request, $id)
{
$logistics = Logistics::findOrFail($id);
$package = new Package();
$items = $request->json()->get('items', []);
foreach ($items as $index => $item) {
$package->add($item);
}
$package->to($request->json()->get('to'));
return ['price' => $logistics->deliverer->calc($package)];
}
/**
* 根据当前的订单信息及给定的商品计算订单价格
* @param $order_products
* @return array
*/
public function calc($order_products = null)
{
$total_amount = $subtotal_product = $subtotal_tax = $subtotal_logistics = $subtotal_discount = 0;
$products = $order_products === null ? $this->products : $order_products;
// total_amount = subtotal_product + subtotal_tax + subtotal_logistics - subtotal_discount
$package = new Package();
$package->to($this->logistics_region);
foreach ($products as $product) {
$subtotal_product += $product->price * $product->quantity;
$subtotal_discount += $product->discount * $product->quantity;
$subtotal_tax += $product->tax * $product->quantity;
$package->add($product->quantity);
}
$subtotal_discount += $this->order_discount;
$subtotal_logistics = $this->logistics->deliverer->calc($package);
$this->subtotal_product = $subtotal_product;
$this->subtotal_tax = $subtotal_tax;
$this->subtotal_discount = $subtotal_discount;
$this->subtotal_logistics = $subtotal_logistics;
$this->total_amount = $subtotal_product + $subtotal_tax + $subtotal_logistics - $subtotal_discount;
return $this;
}
