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<?php
namespace Gloudemans\Shoppingcart;
use Carbon\Carbon;
use Closure;
use Gloudemans\Shoppingcart\Contracts\Buyable;
use Gloudemans\Shoppingcart\Contracts\InstanceIdentifier;
use Gloudemans\Shoppingcart\Exceptions\CartAlreadyStoredException;
use Gloudemans\Shoppingcart\Exceptions\InvalidRowIDException;
use Gloudemans\Shoppingcart\Exceptions\UnknownModelException;
use Illuminate\Contracts\Events\Dispatcher;
use Illuminate\Database\DatabaseManager;
use Illuminate\Session\SessionManager;
use Illuminate\Support\Collection;
use Illuminate\Support\Traits\Macroable;
class Cart
{
use Macroable;
const DEFAULT_INSTANCE = 'default';
/**
* Instance of the session manager.
*
* @var \Illuminate\Session\SessionManager
*/
private $session;
/**
* Instance of the event dispatcher.
*
* @var \Illuminate\Contracts\Events\Dispatcher
*/
private $events;
/**
* Holds the current cart instance.
*
* @var string
*/
private $instance;
/**
* Holds the creation date of the cart.
*
* @var mixed
*/
private $createdAt;
/**
* Holds the update date of the cart.
*
* @var mixed
*/
private $updatedAt;
/**
* Defines the discount percentage.
*
* @var float
*/
private $discount = 0;
/**
* Defines the tax rate.
*
* @var float
*/
private $taxRate = 0;
/**
* Cart constructor.
*
* @param \Illuminate\Session\SessionManager $session
* @param \Illuminate\Contracts\Events\Dispatcher $events
*/
public function __construct(SessionManager $session, Dispatcher $events)
{
$this->session = $session;
$this->events = $events;
$this->taxRate = config('cart.tax');
$this->instance(self::DEFAULT_INSTANCE);
}
/**
* Set the current cart instance.
*
* @param string|null $instance
*
* @return \Gloudemans\Shoppingcart\Cart
*/
public function instance($instance = null)
{
$instance = $instance ?: self::DEFAULT_INSTANCE;
if ($instance instanceof InstanceIdentifier) {
$this->discount = $instance->getInstanceGlobalDiscount();
$instance = $instance->getInstanceIdentifier();
}
$this->instance = 'cart.'.$instance;
return $this;
}
/**
* Get the current cart instance.
*
* @return string
*/
public function currentInstance()
{
return str_replace('cart.', '', $this->instance);
}
/**
* Add an item to the cart.
*
* @param mixed $id
* @param mixed $name
* @param int|float $qty
* @param float $price
* @param float $weight
* @param array $options
*
* @return \Gloudemans\Shoppingcart\CartItem
*/
public function add($id, $name = null, $qty = null, $price = null, $weight = 0, array $options = [])
{
if ($this->isMulti($id)) {
return array_map(function ($item) {
return $this->add($item);
}, $id);
}
$cartItem = $this->createCartItem($id, $name, $qty, $price, $weight, $options);
return $this->addCartItem($cartItem);
}
/**
* Add an item to the cart.
*
* @param \Gloudemans\Shoppingcart\CartItem $item Item to add to the Cart
* @param bool $keepDiscount Keep the discount rate of the Item
* @param bool $keepTax Keep the Tax rate of the Item
* @param bool $dispatchEvent
*
* @return \Gloudemans\Shoppingcart\CartItem The CartItem
*/
public function addCartItem($item, $keepDiscount = false, $keepTax = false, $dispatchEvent = true)
{
if (!$keepDiscount) {
$item->setDiscountRate($this->discount);
}
if (!$keepTax) {
$item->setTaxRate($this->taxRate);
}
$content = $this->getContent();
if ($content->has($item->rowId)) {
$item->qty += $content->get($item->rowId)->qty;
}
$content->put($item->rowId, $item);
if ($dispatchEvent) {
$this->events->dispatch('cart.adding', $item);
}
$this->session->put($this->instance, $content);
if ($dispatchEvent) {
$this->events->dispatch('cart.added', $item);
}
return $item;
}
/**
* Update the cart item with the given rowId.
*
* @param string $rowId
* @param mixed $qty
*
* @return \Gloudemans\Shoppingcart\CartItem
*/
public function update($rowId, $qty)
{
$cartItem = $this->get($rowId);
if ($qty instanceof Buyable) {
$cartItem->updateFromBuyable($qty);
} elseif (is_array($qty)) {
$cartItem->updateFromArray($qty);
} else {
$cartItem->qty = $qty;
}
$content = $this->getContent();
if ($rowId !== $cartItem->rowId) {
$itemOldIndex = $content->keys()->search($rowId);
$content->pull($rowId);
if ($content->has($cartItem->rowId)) {
$existingCartItem = $this->get($cartItem->rowId);
$cartItem->setQuantity($existingCartItem->qty + $cartItem->qty);
}
}
if ($cartItem->qty <= 0) {
$this->remove($cartItem->rowId);
return;
} else {
if (isset($itemOldIndex)) {
$content = $content->slice(0, $itemOldIndex)
->merge([$cartItem->rowId => $cartItem])
->merge($content->slice($itemOldIndex));
} else {
$content->put($cartItem->rowId, $cartItem);
}
}
$this->events->dispatch('cart.updating', $cartItem);
$this->session->put($this->instance, $content);
$this->events->dispatch('cart.updated', $cartItem);
return $cartItem;
}
/**
* Remove the cart item with the given rowId from the cart.
*
* @param string $rowId
*
* @return void
*/
public function remove($rowId)
{
$cartItem = $this->get($rowId);
$content = $this->getContent();
$content->pull($cartItem->rowId);
$this->events->dispatch('cart.removing', $cartItem);
$this->session->put($this->instance, $content);
$this->events->dispatch('cart.removed', $cartItem);
}
/**
* Get a cart item from the cart by its rowId.
*
* @param string $rowId
*
* @return \Gloudemans\Shoppingcart\CartItem
*/
public function get($rowId)
{
$content = $this->getContent();
if (!$content->has($rowId)) {
throw new InvalidRowIDException("The cart does not contain rowId {$rowId}.");
}
return $content->get($rowId);
}
/**
* Destroy the current cart instance.
*
* @return void
*/
public function destroy()
{
$this->session->remove($this->instance);
}
/**
* Get the content of the cart.
*
* @return \Illuminate\Support\Collection
*/
public function content()
{
if (is_null($this->session->get($this->instance))) {
return new Collection([]);
}
return $this->session->get($this->instance);
}
/**
* Get the total quantity of all CartItems in the cart.
*
* @return int|float
*/
public function count()
{
return $this->getContent()->sum('qty');
}
/**
* Get the amount of CartItems in the Cart.
* Keep in mind that this does NOT count quantity.
*
* @return int|float
*/
public function countItems()
{
return $this->getContent()->count();
}
/**
* Get the total price of the items in the cart.
*
* @return float
*/
public function totalFloat()
{
return $this->getContent()->reduce(function ($total, CartItem $cartItem) {
return $total + $cartItem->total;
}, 0);
}
/**
* Get the total price of the items in the cart as formatted string.
*
* @param int $decimals
* @param string $decimalPoint
* @param string $thousandSeperator
*
* @return string
*/
public function total($decimals = null, $decimalPoint = null, $thousandSeperator = null)
{
return $this->numberFormat($this->totalFloat(), $decimals, $decimalPoint, $thousandSeperator);
}
/**
* Get the total tax of the items in the cart.
*
* @return float
*/
public function taxFloat()
{
return $this->getContent()->reduce(function ($tax, CartItem $cartItem) {
return $tax + $cartItem->taxTotal;
}, 0);
}
/**
* Get the total tax of the items in the cart as formatted string.
*
* @param int $decimals
* @param string $decimalPoint
* @param string $thousandSeperator
*
* @return string
*/
public function tax($decimals = null, $decimalPoint = null, $thousandSeperator = null)
{
return $this->numberFormat($this->taxFloat(), $decimals, $decimalPoint, $thousandSeperator);
}
/**
* Get the subtotal (total - tax) of the items in the cart.
*
* @return float
*/
public function subtotalFloat()
{
return $this->getContent()->reduce(function ($subTotal, CartItem $cartItem) {
return $subTotal + $cartItem->subtotal;
}, 0);
}
/**
* Get the subtotal (total - tax) of the items in the cart as formatted string.
*
* @param int $decimals
* @param string $decimalPoint
* @param string $thousandSeperator
*
* @return string
*/
public function subtotal($decimals = null, $decimalPoint = null, $thousandSeperator = null)
{
return $this->numberFormat($this->subtotalFloat(), $decimals, $decimalPoint, $thousandSeperator);
}
/**
* Get the discount of the items in the cart.
*
* @return float
*/
public function discountFloat()
{
return $this->getContent()->reduce(function ($discount, CartItem $cartItem) {
return $discount + $cartItem->discountTotal;
}, 0);
}
/**
* Get the discount of the items in the cart as formatted string.
*
* @param int $decimals
* @param string $decimalPoint
* @param string $thousandSeperator
*
* @return string
*/
public function discount($decimals = null, $decimalPoint = null, $thousandSeperator = null)
{
return $this->numberFormat($this->discountFloat(), $decimals, $decimalPoint, $thousandSeperator);
}
/**
* Get the price of the items in the cart (not rounded).
*
* @return float
*/
public function initialFloat()
{
return $this->getContent()->reduce(function ($initial, CartItem $cartItem) {
return $initial + ($cartItem->qty * $cartItem->price);
}, 0);
}
/**
* Get the price of the items in the cart as formatted string.
*
* @param int $decimals
* @param string $decimalPoint
* @param string $thousandSeperator
*
* @return string
*/
public function initial($decimals = null, $decimalPoint = null, $thousandSeperator = null)
{
return $this->numberFormat($this->initialFloat(), $decimals, $decimalPoint, $thousandSeperator);
}
/**
* Get the price of the items in the cart (previously rounded).
*
* @return float
*/
public function priceTotalFloat()
{
return $this->getContent()->reduce(function ($initial, CartItem $cartItem) {
return $initial + $cartItem->priceTotal;
}, 0);
}
/**
* Get the price of the items in the cart as formatted string.
*
* @param int $decimals
* @param string $decimalPoint
* @param string $thousandSeperator
*
* @return string
*/
public function priceTotal($decimals = null, $decimalPoint = null, $thousandSeperator = null)
{
return $this->numberFormat($this->priceTotalFloat(), $decimals, $decimalPoint, $thousandSeperator);
}
/**
* Get the total weight of the items in the cart.
*
* @return float
*/
public function weightFloat()
{
return $this->getContent()->reduce(function ($total, CartItem $cartItem) {
return $total + ($cartItem->qty * $cartItem->weight);
}, 0);
}
/**
* Get the total weight of the items in the cart.
*
* @param int $decimals
* @param string $decimalPoint
* @param string $thousandSeperator
*
* @return string
*/
public function weight($decimals = null, $decimalPoint = null, $thousandSeperator = null)
{
return $this->numberFormat($this->weightFloat(), $decimals, $decimalPoint, $thousandSeperator);
}
/**
* Search the cart content for a cart item matching the given search closure.
*
* @param \Closure $search
*
* @return \Illuminate\Support\Collection
*/
public function search(Closure $search)
{
return $this->getContent()->filter($search);
}
/**
* Associate the cart item with the given rowId with the given model.
*
* @param string $rowId
* @param mixed $model
*
* @return void
*/
public function associate($rowId, $model)
{
if (is_string($model) && !class_exists($model)) {
throw new UnknownModelException("The supplied model {$model} does not exist.");
}
$cartItem = $this->get($rowId);
$cartItem->associate($model);
$content = $this->getContent();
$content->put($cartItem->rowId, $cartItem);
$this->session->put($this->instance, $content);
}
/**
* Set the tax rate for the cart item with the given rowId.
*
* @param string $rowId
* @param int|float $taxRate
*
* @return void
*/
public function setTax($rowId, $taxRate)
{
$cartItem = $this->get($rowId);
$cartItem->setTaxRate($taxRate);
$content = $this->getContent();
$content->put($cartItem->rowId, $cartItem);
$this->session->put($this->instance, $content);
}
/**
* Set the global tax rate for the cart.
* This will set the tax rate for all items.
*
* @param float $discount
*/
public function setGlobalTax($taxRate)
{
$this->taxRate = $taxRate;
$content = $this->getContent();
if ($content && $content->count()) {
$content->each(function ($item, $key) {
$item->setTaxRate($this->taxRate);
});
}
}
/**
* Set the discount rate for the cart item with the given rowId.
*
* @param string $rowId
* @param int|float $taxRate
*
* @return void
*/
public function setDiscount($rowId, $discount)
{
$cartItem = $this->get($rowId);
$cartItem->setDiscountRate($discount);
$content = $this->getContent();
$content->put($cartItem->rowId, $cartItem);
$this->session->put($this->instance, $content);
}
/**
* Set the global discount percentage for the cart.
* This will set the discount for all cart items.
*
* @param float $discount
*
* @return void
*/
public function setGlobalDiscount($discount)
{
$this->discount = $discount;
$content = $this->getContent();
if ($content && $content->count()) {
$content->each(function ($item, $key) {
$item->setDiscountRate($this->discount);
});
}
}
/**
* Store an the current instance of the cart.
*
* @param mixed $identifier
*
* @return void
*/
public function store($identifier)
{
$content = $this->getContent();
if ($identifier instanceof InstanceIdentifier) {
$identifier = $identifier->getInstanceIdentifier();
}
$instance = $this->currentInstance();
if ($this->storedCartInstanceWithIdentifierExists($instance, $identifier)) {
throw new CartAlreadyStoredException("A cart with identifier {$identifier} was already stored.");
}
$this->getConnection()->table($this->getTableName())->insert([
'identifier' => $identifier,
'instance' => $instance,
'content' => serialize($content),
'created_at' => $this->createdAt ?: Carbon::now(),
'updated_at' => Carbon::now(),
]);
$this->events->dispatch('cart.stored');
}
/**
* Restore the cart with the given identifier.
*
* @param mixed $identifier
*
* @return void
*/
public function restore($identifier)
{
if ($identifier instanceof InstanceIdentifier) {
$identifier = $identifier->getInstanceIdentifier();
}
$currentInstance = $this->currentInstance();
if (!$this->storedCartInstanceWithIdentifierExists($currentInstance, $identifier)) {
return;
}
$stored = $this->getConnection()->table($this->getTableName())
->where(['identifier'=> $identifier, 'instance' => $currentInstance])->first();
$storedContent = unserialize(data_get($stored, 'content'));
$this->instance(data_get($stored, 'instance'));
$content = $this->getContent();
foreach ($storedContent as $cartItem) {
$content->put($cartItem->rowId, $cartItem);
}
$this->events->dispatch('cart.restored');
$this->session->put($this->instance, $content);
$this->instance($currentInstance);
$this->createdAt = Carbon::parse(data_get($stored, 'created_at'));
$this->updatedAt = Carbon::parse(data_get($stored, 'updated_at'));
$this->getConnection()->table($this->getTableName())->where(['identifier' => $identifier, 'instance' => $currentInstance])->delete();
}
/**
* Erase the cart with the given identifier.
*
* @param mixed $identifier
*
* @return void
*/
public function erase($identifier)
{
if ($identifier instanceof InstanceIdentifier) {
$identifier = $identifier->getInstanceIdentifier();
}
$instance = $this->currentInstance();
if (!$this->storedCartInstanceWithIdentifierExists($instance, $identifier)) {
return;
}
$this->getConnection()->table($this->getTableName())->where(['identifier' => $identifier, 'instance' => $instance])->delete();
$this->events->dispatch('cart.erased');
}
/**
* Merges the contents of another cart into this cart.
*
* @param mixed $identifier Identifier of the Cart to merge with.
* @param bool $keepDiscount Keep the discount of the CartItems.
* @param bool $keepTax Keep the tax of the CartItems.
* @param bool $dispatchAdd Flag to dispatch the add events.
*
* @return bool
*/
public function merge($identifier, $keepDiscount = false, $keepTax = false, $dispatchAdd = true, $instance = self::DEFAULT_INSTANCE)
{
if (!$this->storedCartInstanceWithIdentifierExists($instance, $identifier)) {
return false;
}
$stored = $this->getConnection()->table($this->getTableName())
->where(['identifier'=> $identifier, 'instance'=> $instance])->first();
$storedContent = unserialize($stored->content);
foreach ($storedContent as $cartItem) {
$this->addCartItem($cartItem, $keepDiscount, $keepTax, $dispatchAdd);
}
$this->events->dispatch('cart.merged');
return true;
}
/**
* Magic method to make accessing the total, tax and subtotal properties possible.
*
* @param string $attribute
*
* @return float|null
*/
public function __get($attribute)
{
switch ($attribute) {
case 'total':
return $this->total();
case 'tax':
return $this->tax();
case 'subtotal':
return $this->subtotal();
default:
return;
}
}
/**
* Get the carts content, if there is no cart content set yet, return a new empty Collection.
*
* @return \Illuminate\Support\Collection
*/
protected function getContent()
{
if ($this->session->has($this->instance)) {
return $this->session->get($this->instance);
}
return new Collection();
}
/**
* Create a new CartItem from the supplied attributes.
*
* @param mixed $id
* @param mixed $name
* @param int|float $qty
* @param float $price
* @param float $weight
* @param array $options
*
* @return \Gloudemans\Shoppingcart\CartItem
*/
private function createCartItem($id, $name, $qty, $price, $weight, array $options)
{
if ($id instanceof Buyable) {
$cartItem = CartItem::fromBuyable($id, $qty ?: []);
$cartItem->setQuantity($name ?: 1);
$cartItem->associate($id);
} elseif (is_array($id)) {
$cartItem = CartItem::fromArray($id);
$cartItem->setQuantity($id['qty']);
} else {
$cartItem = CartItem::fromAttributes($id, $name, $price, $weight, $options);
$cartItem->setQuantity($qty);
}
$cartItem->setInstance($this->currentInstance());
return $cartItem;
}
/**
* Check if the item is a multidimensional array or an array of Buyables.
*
* @param mixed $item
*
* @return bool
*/
private function isMulti($item)
{
if (!is_array($item)) {
return false;
}
return is_array(head($item)) || head($item) instanceof Buyable;
}
/**
* @param $identifier
*
* @return bool
*/
private function storedCartInstanceWithIdentifierExists($instance, $identifier)
{
return $this->getConnection()->table($this->getTableName())->where(['identifier' => $identifier, 'instance'=> $instance])->exists();
}
/**
* Get the database connection.
*
* @return \Illuminate\Database\Connection
*/
private function getConnection()
{
return app(DatabaseManager::class)->connection($this->getConnectionName());
}
/**
* Get the database table name.
*
* @return string
*/
private function getTableName()
{
return config('cart.database.table', 'shoppingcart');
}
/**
* Get the database connection name.
*
* @return string
*/
private function getConnectionName()
{
$connection = config('cart.database.connection');
return is_null($connection) ? config('database.default') : $connection;
}
/**
* Get the Formatted number.
*
* @param $value
* @param $decimals
* @param $decimalPoint
* @param $thousandSeperator
*
* @return string
*/
private function numberFormat($value, $decimals, $decimalPoint, $thousandSeperator)
{
if (is_null($decimals)) {
$decimals = config('cart.format.decimals', 2);
}
if (is_null($decimalPoint)) {
$decimalPoint = config('cart.format.decimal_point', '.');
}
if (is_null($thousandSeperator)) {
$thousandSeperator = config('cart.format.thousand_separator', ',');
}
return number_format($value, $decimals, $decimalPoint, $thousandSeperator);
}
/**
* Get the creation date of the cart (db context).
*
* @return \Carbon\Carbon|null
*/
public function createdAt()
{
return $this->createdAt;
}
/**
* Get the lats update date of the cart (db context).
*
* @return \Carbon\Carbon|null
*/
public function updatedAt()
{
return $this->updatedAt;
}
}