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<?php |
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namespace Milwad\LaravelValidate\Traits; |
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trait IbanTrait |
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{ |
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/** |
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* Set value of $countries property. |
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*/ |
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private function setCountries(?array $countries): void |
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{ |
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if (empty($countries)) { |
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$this->countries = []; |
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return; |
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} |
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if (is_array($countries[0])) { |
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$countries = $countries[0]; |
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} |
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foreach ($countries as $country) { |
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$this->countries[] = $country; |
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} |
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} |
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/** |
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* Check IBAN is valid. |
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*/ |
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private function isIbanValid(string $iban): bool |
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{ |
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if (! $this->checkIbanFormat($iban)) { |
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return false; |
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} |
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/* |
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* Connect Iban title with value (code) ex: 8330001234567NO . |
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*/ |
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$parsedIban = substr($iban, 4).substr($iban, 0, 4); |
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/* |
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* Replace iban value with character map. |
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*/ |
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$parsedIban = strtr($parsedIban, $this->characterMap); |
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return bcmod($parsedIban, '97') === '1'; |
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} |
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/** |
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* Check IBAN format is valid. |
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*/ |
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private function checkIbanFormat(string $iban): bool |
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{ |
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if (empty($iban)) { |
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return false; |
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} |
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$ibanCountryCode = $this->getIbanCountryCode($iban); |
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return ! (empty($this->checkIfBcmodIsAvailable()) |
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|| ! $this->twoFirstCharactersValid($ibanCountryCode) |
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|| ! $this->isCountriesValid($ibanCountryCode) |
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|| ! $this->isIbanLengthValid($iban, $ibanCountryCode)); |
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} |
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/** |
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* Get IBAN country code. |
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*/ |
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private function getIbanCountryCode(string $iban): string |
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{ |
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return substr($iban, 0, 2); |
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} |
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/** |
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* Check if bcmod function is available. |
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*/ |
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private function checkIfBcmodIsAvailable(): bool |
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{ |
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return function_exists('bcmod'); |
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} |
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/** |
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* Check two first character's validity. |
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*/ |
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private function twoFirstCharactersValid(string $countryCode): bool |
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{ |
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return ! empty($countryCode) && ctype_alpha($countryCode); |
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} |
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/** |
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* Check countries of the IBAN. |
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*/ |
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private function isCountriesValid(string $ibanCountryCode): bool |
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{ |
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if (empty($this->countries)) { |
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return true; |
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} |
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foreach ($this->countries as $country) { |
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if ($this->isCountryValid($country, $ibanCountryCode)) { |
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return true; |
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} |
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} |
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return false; |
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} |
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/** |
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* Check country of the IBAN. |
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*/ |
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private function isCountryValid(string $country, string $ibanCountryCode): bool |
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{ |
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return ! empty($country) |
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&& isset($this->ibanLengthByCountry[$country]) |
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&& $ibanCountryCode === $country; |
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} |
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/** |
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* Check country of the IBAN. |
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*/ |
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private function isIbanLengthValid(string $iban, string $ibanCountryCode): bool |
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{ |
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return strlen($iban) === $this->ibanLengthByCountry[$ibanCountryCode]; |
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} |
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} |
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milwad-dev /
laravel-validate
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