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<?php |
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namespace SilverCommerce\TaxAdmin\Traits; |
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use LogicException; |
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use NumberFormatter; |
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trait Taxable |
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{ |
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/** |
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* Filter the results returned by an extension |
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* |
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* @param mixed $results Possible results |
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* |
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* @return mixed |
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*/ |
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public function filterTaxableExtensionResults($results) |
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{ |
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if (!empty($results) && is_array($results)) { |
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$results = array_filter( |
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$results, |
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function ($v) { |
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return !is_null($v); |
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} |
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); |
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if (is_array($results) && count($results) > 0) { |
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return $results[0]; |
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} |
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} |
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return; |
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} |
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/** |
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* Get currency formatter |
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* |
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* @return NumberFormatter |
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*/ |
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public function getFormatter() |
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{ |
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if (!$this->hasMethod('getLocale')) { |
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throw new LogicException('Object must implement \SilverCommerce\TaxAdmin\Interfaces\TaxableProvider'); |
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} |
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return NumberFormatter::create( |
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$this->getLocale(), |
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NumberFormatter::CURRENCY |
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); |
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} |
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/** |
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* Get ISO 4217 currency code from curent locale |
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* |
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* @return string |
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*/ |
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public function getCurrency() |
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{ |
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return $this |
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->getFormatter() |
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->getTextAttribute(NumberFormatter::CURRENCY_CODE); |
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} |
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/** |
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* Get a currency symbol from the current site local |
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* |
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* @return string |
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*/ |
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public function getCurrencySymbol() |
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{ |
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return $this |
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->getFormatter() |
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->getSymbol(NumberFormatter::CURRENCY_SYMBOL); |
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} |
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/** |
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* Shortcut to get the price of this product without tax |
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* |
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* @return float |
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*/ |
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public function getNoTaxPrice() |
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{ |
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if (!$this->hasMethod('getBasePrice')) { |
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throw new LogicException('Object must implement \SilverCommerce\TaxAdmin\Interfaces\TaxableProvider'); |
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} |
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$price = $this->getBasePrice(); |
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if ($this->hasMethod('extend')) { |
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$result = $this->filterTaxableExtensionResults( |
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$this->extend("updateNoTaxPrice", $price) |
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); |
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if (!empty($result)) { |
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return $result; |
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} |
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} |
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return $price; |
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} |
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/** |
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* Get the percentage tax rate assotiated with this field |
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* |
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* @return float |
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*/ |
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public function getTaxPercentage() |
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{ |
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$percent = $this->getTaxRate()->Rate; |
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if ($this->hasMethod('extend')) { |
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$result = $this->filterTaxableExtensionResults( |
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$this->extend("updateTaxPercentage", $percent) |
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); |
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if (!empty($result)) { |
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return $result; |
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} |
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} |
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return $percent; |
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} |
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/** |
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* Get a final tax amount for this object. You can extend this |
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* method using "UpdateTax" allowing third party modules to alter |
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* tax amounts dynamically. |
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* |
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* @return float |
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*/ |
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public function getTaxAmount() |
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{ |
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if (!$this->exists()) { |
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return 0; |
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} |
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$price = $this->getBasePrice(); |
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$percent = $this->getTaxPercentage(); |
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// Round using default rounding defined on MathsHelper |
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$tax = ($price / 100) * $percent; |
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if ($this->hasMethod('extend')) { |
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$result = $this->filterTaxableExtensionResults( |
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$this->extend("updateTaxAmount", $tax) |
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); |
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if (!empty($result)) { |
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return $result; |
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} |
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} |
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return $tax; |
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} |
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/** |
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* Get the Total price and tax |
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* |
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* @return float |
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*/ |
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public function getPriceAndTax() |
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{ |
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$notax = $this->getNoTaxPrice(); |
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$tax = $this->getTaxAmount(); |
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$price = $notax + $tax; |
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if ($this->hasMethod('extend')) { |
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$result = $this->filterTaxableExtensionResults( |
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$this->extend("updatePriceAndTax", $price) |
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); |
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if (!empty($result)) { |
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return $result; |
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} |
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} |
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return $price; |
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} |
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/** |
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* Generate a string to go with the the product price. We can |
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* overwrite the wording of this by using Silverstripes language |
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* files |
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* |
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* @param bool|null $include_tax Should this include tax or not? |
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* |
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* @return string |
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*/ |
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public function getTaxString($include_tax = null) |
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{ |
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if (!$this->hasMethod('getTaxRate') |
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|| !$this->hasMethod('getShowPriceWithTax') |
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) { |
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throw new LogicException('Object must implement \SilverCommerce\TaxAdmin\Interfaces\TaxableProvider'); |
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} |
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$string = ""; |
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$rate = $this->getTaxRate(); |
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if (empty($include_tax)) { |
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$include_tax = $this->getShowPriceWithTax(); |
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} |
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if ($rate->exists() && $include_tax) { |
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$string = _t( |
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self::class . ".TaxIncludes", |
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"inc. {title}", |
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["title" => $rate->Title] |
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); |
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} elseif ($rate->exists() && !$include_tax) { |
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$string = _t( |
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self::class . ".TaxExcludes", |
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"ex. {title}", |
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["title" => $rate->Title] |
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); |
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} |
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if ($this->hasMethod('extend')) { |
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$result = $this->filterTaxableExtensionResults( |
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$this->extend("updateTaxString", $string) |
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); |
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if (!empty($result)) { |
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return $result; |
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} |
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} |
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return $string; |
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} |
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/** |
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* Return a formatted price (based on locale) |
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* |
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* @param bool $include_tax Should the formatted price include tax? |
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* |
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* @return string |
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*/ |
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public function getFormattedPrice($include_tax = false) |
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{ |
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$currency = $this->getCurrency(); |
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$formatter = $this->getFormatter(); |
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if ($include_tax) { |
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$amount = $this->getPriceAndTax(); |
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} else { |
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$amount = $this->getNoTaxPrice(); |
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} |
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// Without currency, format as basic localised number |
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if (!$currency) { |
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return $formatter->format($amount); |
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} |
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return $formatter->formatCurrency($amount, $currency); |
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} |
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/** |
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* Get nicely formatted currency (based on current locale) |
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* |
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* @return string |
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*/ |
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public function getNicePrice() |
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{ |
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if ($this->hasMethod('renderWith')) { |
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return $this->renderWith(__CLASS__ . "_NicePrice"); |
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} |
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return ""; |
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} |
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} |
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