Viewing file:  TaxCalculation.php (7.56 KB) -rw-r--r--
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<?php
/**
* @package TaxCalculation
* @author TechVillage <support@techvill.org>
* @contributor Sakawat Hossain <[sakawat.techvill@gmail.com]>
* @created 29-09-2022
*/
namespace App\Services\Tax;
class TaxCalculation
{
/**
* store data for applicable tax
*
* @var array
*/
protected $applicableRate = [];
/**
* store productized data for taxRates
*
* @var array
*/
protected $taxRates = [];
/**
* store data for all taxes
*
* @var
*/
protected $taxes = null;
/**
* store price
*
* @var null
*/
protected $price = null;
/**
* store comparable address
*
* @var null
*/
protected $compareAddress = null;
/**
* store for is tax productized or not
*
* @var bool
*/
protected $isProductized = false;
/**
* store data from shipping charge
*
* @var int
*/
protected $shipping = 0;
/**
* store quantity
*
* @var int
*/
protected $qty = 1;
/**
* store shipping tax class
*
* @var null
*/
protected $shippingTaxClass = null;
public function __construct($taxes, $price, $compareAddress, $isProductized = false, $shipping = 0, $qty = 1, $shippingTaxClass)
{
$this->setTaxes($taxes);
$this->price = $price;
$this->compareAddress = $compareAddress;
$this->isProductized = $isProductized;
$this->shipping = $shipping;
$this->qty = $qty;
$this->shippingTaxClass = $shippingTaxClass;
}
/**
* calculate tax
*
* @return float|int|null
*/
public function calculateTax()
{
$taxes = $this->taxes->sortBy([
['compound', 'asc'],
['priority', 'asc'],
]);
$qty = $this->qty;
$price = $this->price * $qty;
$compareAddress = $this->compareAddress;
$isProductized = $this->isProductized;
$shipping = $this->shipping;
$shippingTaxClass = $this->shippingTaxClass;
$tempPrice = $price;
$priority = [];
$compoundPrice = $price;
$fixPrice = $price;
foreach ($taxes as $tax) {
$flag = $this->checkApplicableAddress($tax, $compareAddress);
if ($flag && !in_array($tax->priority, $priority)) {
$taxRate = $tax->tax_rate;
if ($tax->compound == 1) {
$calPrice = ($taxRate * $compoundPrice) / 100;
$compoundPrice += $calPrice;
$price = $compoundPrice;
} else {
$calPrice = ($taxRate * $price) / 100;
$compoundPrice += $calPrice;
}
if ($tax->shipping == 1 && $shippingTaxClass == 'shipping tax class base on cart items') {
$shippingTaxRate = $tax->tax_rate;
$shipTax = ($shippingTaxRate * $shipping) / 100;
$calPrice += $shipTax;
}
$tempPrice += $calPrice;
if ($isProductized) {
$this->taxRates[$tax->name] = isset($this->taxRates[$tax->name]) ? $this->taxRates[$tax->name] + $calPrice : $calPrice;
}
$priority[] = $tax->priority;
}
}
if ($isProductized) {
return $this->taxRates;
}
return $tempPrice != $fixPrice ? $tempPrice - $fixPrice : 0;
}
/**
* calculate shipping tax
*
* @return array|float|int
*/
public function calculateShippingTax()
{
$this->taxRates = [];
$this->applicableRate = [];
$taxes = $this->taxes->sortBy([
['compound', 'asc'],
['priority', 'asc'],
]);
$compareAddress = $this->compareAddress;
$isProductized = $this->isProductized;
$shipping = $this->shipping;
$shippingTaxClass = $this->shippingTaxClass;
$priority = [];
$shipTax = 0;
$taxResult = 0;
foreach ($taxes as $tax) {
$flag = $this->checkApplicableAddress($tax, $compareAddress);
if ($flag && !in_array($tax->priority, $priority) && $tax->shipping == 1) {
if ($shippingTaxClass != 'shipping tax class base on cart items') {
$shippingTaxRate = $tax->tax_rate;
$taxResult = ($shippingTaxRate * $shipping) / 100;
$shipTax += $taxResult;
}
if ($isProductized) {
$this->taxRates[$tax->name] = isset($this->taxRates[$tax->name]) ? $this->taxRates[$tax->name] + $taxResult : $taxResult;
}
$priority[] = $tax->priority;
}
}
if ($isProductized) {
return $this->taxRates;
}
return $shipTax;
}
/**
* check whether address applicable or not
*
* @param $taxAddress
* @param $compareAddress
* @return bool
*/
public function checkApplicableAddress($taxAddress = null, $compareAddress = null)
{
$flag = true;
if (!is_null($taxAddress->country)) {
if (!is_null($compareAddress)) {
if (strtolower($taxAddress->country) != strtolower($compareAddress->country)) {
$flag = false;
}
} else {
$flag = false;
}
}
if (!is_null($taxAddress->state)) {
if (!is_null($compareAddress)) {
if ($taxAddress->state != $compareAddress->state) {
$flag = false;
}
} else {
$flag = false;
}
}
if (!is_null($taxAddress->city)) {
if (!is_null($compareAddress)) {
if ($taxAddress->city != $compareAddress->city) {
$flag = false;
}
} else {
$flag = false;
}
}
if (!is_null($taxAddress->postcode)) {
if (!is_null($compareAddress)) {
if ($taxAddress->postcode != $compareAddress->post_code) {
$flag = false;
}
} else {
$flag = false;
}
}
return $flag;
}
/**
* set all taxes
*
* @param $taxes
* @return void
*/
public function setTaxes($taxes)
{
$this->taxes = $taxes;
$collectionTaxesNotNull = collect($this->taxes)->where('country', '!=', null)->groupBy('country');
$collectionTaxesNull = collect($this->taxes)->where('country', null)->groupBy('country');
$collectionTaxes = $collectionTaxesNotNull->merge($collectionTaxesNull);
$data = [];
foreach ($collectionTaxes as $allTaxes) {
$uniquePriority = [];
foreach ($allTaxes as $allTax) {
if (!in_array($allTax->priority, $uniquePriority)) {
$maxSort = $allTaxes->where('priority', $allTax->priority)->max('sort_by');
$data[] = $allTaxes->where('priority', $allTax->priority)->where('sort_by', $maxSort)->first();
$uniquePriority[] = $allTax->priority;
}
}
}
$this->taxes = collect($data);
}
}
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