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<?php
namespace artweb\artbox\ecommerce\models;
use yii\base\Component;
use yii\web\NotFoundHttpException;
/**
* Class Basket to work with basket
*
* @package artweb\artbox\ecommerce\models
*/
class Basket extends Component
{
/**
* Session object
*
* @var \yii\web\Session
*/
public $session;
/**
* Basket constructor.
* Check for basket variable in session and set it to empty array if not exist.
*
* @param array $config
*/
public function __construct(array $config = [])
{
$this->session = \Yii::$app->session;
if (!$this->session->has('basket')) {
$this->session->set('basket', []);
}
parent::__construct($config);
}
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/**
* Increment product variant with $product_variant_id count by 1
*
* @param int $product_variant_id
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* @param int $count
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*/
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public function add(int $product_variant_id, int $count)
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{
$data = $this->getData();
if (array_key_exists($product_variant_id, $data)) {
if ($data[ $product_variant_id ][ 'count' ] <= 0) {
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$data[ $product_variant_id ][ 'count' ] = $count;
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} else {
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$data[ $product_variant_id ][ 'count' ] += $count;
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}
} else {
if ($this->findModel($product_variant_id)) {
$data[ $product_variant_id ] = [
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'count' => $count,
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];
}
}
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if ($data[ $product_variant_id ][ 'count' ] <= 0) {
unset( $data[ $product_variant_id ] );
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}
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$this->setData($data);
}
/**
* Set product variant with $product_variant_id to $count
*
* @param int $product_variant_id
* @param int $count
*/
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public function set(int $product_variant_id, int $count)
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{
$data = $this->getData();
if (array_key_exists($product_variant_id, $data)) {
$data[ $product_variant_id ][ 'count' ] = $count;
if ($data[ $product_variant_id ][ 'count' ] <= 0) {
unset( $data[ $product_variant_id ] );
}
} elseif ($count > 0) {
if ($this->findModel($product_variant_id)) {
$data[ $product_variant_id ] = [
'count' => $count,
];
}
}
$this->setData($data);
}
/**
* Delete product variant with $product_variant_id from basket
*
* @param int $product_variant_id
*/
public function delete(int $product_variant_id)
{
$this->set($product_variant_id, 0);
}
/**
* Get basket data
*
* @return array
*/
public function getData(): array
{
return $this->session->get('basket');
}
/**
* Get basket item with $product_variant_id. Returns false if item not in basket.
*
* @param int $product_variant_id
*
* @return bool|array
*/
public function getItem(int $product_variant_id)
{
$data = $this->getData();
if (!empty( $data[ $product_variant_id ] )) {
return $data[ $product_variant_id ];
} else {
return false;
}
}
/**
* Set basket data
*
* @param array $data
*/
public function setData(array $data)
{
$this->session->set('basket', $data);
}
/**
* Get count of product variants in basket
*
* @return int
*/
public function getCount(): int
{
$data = $this->getData();
return count($data);
}
/**
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* Get sum of product variants in basket
*
* @return float
*/
public function getSum(): float
{
$data = $this->getData();
$models = $this->findModels(array_keys($data));
$sum = 0;
foreach ($models as $model) {
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$sum += $model->price * $data[ $model->id ][ 'count' ];
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}
return $sum;
}
/**
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* Find Product Variant by $product_variant_id
*
* @param int $product_variant_id
*
* @return \artweb\artbox\ecommerce\models\ProductVariant
* @throws \yii\web\NotFoundHttpException
*/
public function findModel(int $product_variant_id): ProductVariant
{
/**
* @var ProductVariant $model
*/
$model = ProductVariant::find()
->where([ 'product_variant.id' => $product_variant_id ])
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->andWhere(
[
'>',
'product_variant.stock',
0,
]
)
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->joinWith('lang')
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->one();
if (empty( $model )) {
throw new NotFoundHttpException(\Yii::t('app', 'Product not found'));
} else {
return $model;
}
}
/**
* Find all Product Variants filtered by $product_variant_ids
*
* @param array $product_variant_ids
*
* @return ProductVariant[]
*/
public function findModels(array $product_variant_ids)
{
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if (empty( $product_variant_ids )) {
return [];
}
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return ProductVariant::find()
->where([ 'product_variant.id' => $product_variant_ids ])
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->joinWith('lang', 'product')
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->with(
[
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'product.lang',
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'image',
]
)
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->indexBy('id')
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->all();
}
/**
* Clear basket
*/
public function clear()
{
$this->setData([]);
}
}
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