/**
* Determines if this coupon is valid for a cart
*
* @param \Shop\Models\Carts $cart
* @throws \Exception
*/
public function cartValid(\Shop\Models\Carts $cart)
{
// Set $this->__is_validated = true if YES, cart can use this coupon
// throw an Exception if NO, cart cannot use this coupon
/**
* is the coupon published?
*/
if (!$this->published()) {
throw new \Exception('This coupon is expired.');
}
/**
* Only 1 user-submitted coupon per cart,
* and if the auto-coupon is exclusive, it can't be added with others
*/
// If this is a user-submitted coupon && there are other user-submitted coupons in the cart, fail
if (empty($this->usage_automatic) && $cart->userCoupons() && $cart->userCoupons()[0]['code'] != $this->code) {
throw new \Exception('Only one coupon allowed per cart');
}
// if this is an automatic coupon && usage_with_others == 0 && there are other automatic coupons in the cart
if ($this->usage_automatic && empty($this->usage_with_others) && $cart->autoCoupons()) {
throw new \Exception('This coupon cannot be combined with others');
}
// TODO take min_subtotal_amount_currency into account once we have currencies sorted
if (!empty($this->min_subtotal_amount) && $cart->subtotal() < $this->min_subtotal_amount) {
throw new \Exception('Cart has not met the minimum required subtotal');
}
// TODO take min_order_amount_currency into account once we have currencies sorted
$total = $cart->subtotal() - $cart->giftCardTotal() - $cart->discountTotal() - $cart->creditTotal();
// Add back the value of this coupon in case it is already applied
foreach ($cart->allCoupons() as $coupon) {
if ((string) $coupon['_id'] == (string) $this->id) {
$total = $total + $coupon['amount'];
break;
}
}
if (!empty($this->min_order_amount) && $total < $this->min_order_amount) {
throw new \Exception('Cart has not met the minimum required amount');
}
/**
* check that at least one of the $this->required_products is in the cart
*/
if (!empty($this->required_products)) {
// get the IDs of all products in this cart
$product_ids = array();
foreach ($cart->items as $cartitem) {
$product_ids[] = (string) \Dsc\ArrayHelper::get($cartitem, 'product_id');
}
$intersection = array_intersect($this->required_products, $product_ids);
if (empty($intersection)) {
throw new \Exception('Coupon does not apply to any products in your cart.');
}
}
/**
* check that at least one of the $this->required_coupons is in the cart
*/
if (!empty($this->required_coupons)) {
// get the IDs of all coupons in this cart
$coupon_ids = array();
foreach ($cart->userCoupons() as $coupon) {
$coupon_ids[] = (string) $coupon['_id'];
}
foreach ($cart->autoCoupons() as $coupon) {
$coupon_ids[] = (string) $coupon['_id'];
}
$intersection = array_intersect($this->required_coupons, $coupon_ids);
if (empty($intersection)) {
throw new \Exception('Cart does not have any of the required coupons');
}
}
/**
* check that at least one of the products from $this->required_collections is in the cart
*/
if (!empty($this->required_collections)) {
// get the IDs of all products in this cart
$product_ids = array();
foreach ($cart->items as $cartitem) {
$product_ids[] = (string) \Dsc\ArrayHelper::get($cartitem, 'product_id');
}
$found = false;
foreach ($this->required_collections as $collection_id) {
$collection_product_ids = \Shop\Models\Collections::productIds($collection_id);
$intersection = array_intersect($collection_product_ids, $product_ids);
if (!empty($intersection)) {
$found = true;
break;
// if its found, break the foreach loop
}
}
if (!$found) {
throw new \Exception('Coupon does not apply to any products in your cart.');
}
}
/**
* evaluate shopper groups against $this->groups
*/
if (!empty($this->groups)) {
$groups = array();
$user = (new \Users\Models\Users())->setState('filter.id', $cart->user_id)->getItem();
if (empty($cart->user_id) || empty($user->id)) {
// Get the default group
$group_id = \Shop\Models\Settings::fetch()->{'users.default_group'};
if (!empty($group_id)) {
$groups[] = (new \Users\Models\Groups())->setState('filter.id', (string) $group_id)->getItem();
}
} elseif (!empty($user->id)) {
$groups = $user->groups();
}
$group_ids = array();
foreach ($groups as $group) {
$group_ids[] = (string) $group->id;
}
switch ($this->groups_method) {
case "none":
$intersection = array_intersect($this->groups, $group_ids);
if (!empty($intersection)) {
throw new \Exception('Your order does not qualify for this discount.');
}
break;
case "all":
// $missing_groups == the ones from $this->groups that are NOT in $group_ids
$missing_groups = array_diff($this->groups, $group_ids);
if (!empty($missing_groups)) {
throw new \Exception('Your order does not qualify for this discount.');
}
break;
case "one":
default:
$intersection = array_intersect($this->groups, $group_ids);
if (empty($intersection)) {
throw new \Exception('Your order does not qualify for this discount.');
}
break;
}
}
/**
* using geo_address_type (shipping/billing) from the cart, check that it is in geo_countries | geo_regions (if either is set)
*/
if (!empty($this->geo_countries) || !empty($this->geo_regions)) {
// ok, so which of the addresses should we evaluate?
switch ($this->geo_address_type) {
case "billing":
$region = $cart->billingRegion();
$country = $cart->billingCountry();
break;
case "shipping":
default:
$region = $cart->shippingRegion();
$country = $cart->shippingCountry();
break;
}
if (is_null($region) && !empty($this->geo_regions) || is_null($country) && !empty($this->geo_countries)) {
throw new \Exception('Customer cannot use this coupon until we know your address');
}
if (!empty($this->geo_countries)) {
// eval the country
if (!in_array($country, $this->geo_countries)) {
throw new \Exception('Shipping address is invalid');
}
}
if (!empty($this->geo_regions)) {
// eval the region
if (!in_array($region, $this->geo_regions)) {
throw new \Exception('Shipping address is invalid');
}
}
}
/**
* Check the usage of the coupon
*/
if (strlen($this->usage_max)) {
// usage_max = number of times TOTAL that the coupon may be used
// count the orders with coupon.code
$total_count = (new \Shop\Models\Orders())->collection()->count(array('coupons.code' => $this->code));
if ((int) $this->usage_max <= (int) $total_count) {
throw new \Exception('Coupon cannot be used any more');
}
}
if (strlen($this->usage_max_per_customer)) {
// usage_max_per_customer = number of times this customer may use this coupon
// count the orders with coupon.code for user.id
$user_count = (new \Shop\Models\Orders())->collection()->count(array('coupons.code' => $this->code, 'user_id' => $cart->user_id));
if ((int) $this->usage_max_per_customer <= (int) $user_count) {
throw new \Exception('You cannot use this coupon any more');
}
}
/**
* Check, if this isn't generated code
*/
if (!empty($this->generated_code)) {
$key = new \MongoRegex('/' . $this->generated_code . '/i');
$result = \Shop\Models\Coupons::collection()->aggregate(array('$match' => array('_id' => new \MongoId((string) $this->id))), array('$unwind' => '$codes.list'), array('$match' => array("codes.list.code" => $key)), array('$group' => array('_id' => '$title', 'used_code' => array('$sum' => '$codes.list.used'))));
if (count($result['result'])) {
if ($result['result'][0]['used_code']) {
throw new \Exception('You cannot use this coupon any more');
}
} else {
throw new \Exception('Coupon "' . $this->generated_code . '" is no longer available.');
}
}
/**
* if we made it this far, the cart is valid for this coupon
*/
$this->__is_validated = true;
return $this;
}
