Pix::qrcode() - Code Metrics - Inspection of "correcao pix" - brunobmorais/php-pix - Measure and Improve Code Quality continuously with Scrutinizer

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by BRUNO

created 2022-09-24 19:30 UTC

Pix::qrcode() A

↳ Parent: Pix

Complexity

Conditions	1
Paths	1

Size

Total Lines	3
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	1
eloc	2
c	1
b	0
f	0
nc	1
nop	2
dl	0
loc	3
rs	10

<?php

namespace BMorais\Pix;

use Mpdf\QrCode\Output;
use Mpdf\QrCode\QrCode;

/**
 * CLASSE PIX
 *  Esta classe é responsavel por gerar o pix
 *
 * @author Bruno Morais <[email protected]>
 * @copyright GPL © 2022, bmorais.com
 * @package bmorais\pix
 * @subpackage class
 * @access private
 */
class Pix {

  /**
   * IDs do Payload do Pix
   * @var string
   */
  const ID_PAYLOAD_FORMAT_INDICATOR = '00';
  const ID_MERCHANT_ACCOUNT_INFORMATION = '26';

  const ID_MERCHANT_ACCOUNT_INFORMATION_GUI = '00';
  const ID_MERCHANT_ACCOUNT_INFORMATION_CHAVE = '01';
  const ID_MERCHANT_ACCOUNT_INFORMATION_DESCRIPTION = '02';

  const ID_MERCHANT_CATEGORY_CODE = '52';
  const ID_TRANSACTION_CURRENCY = '53';
  const ID_TRANSACTION_AMOUNT = '54';
  const ID_COUNTRY_CODE = '58';
  const ID_MERCHANT_NAME = '59';
  const ID_MERCHANT_CITY = '60';

  const ID_ADDITIONAL_DATA_FIELD_TEMPLATE = '62';
  const ID_ADDITIONAL_DATA_FIELD_TEMPLATE_TXID = '05';

  const ID_CRC16 = '63';

  /**
   * Chave Pix
   * @var string
   */
  private $pixKey;

  /**
   * Descrição do pagamento
   * @var string
   */
  private $description;

  /**
   * Nome do titular da conta
   * @var string
   */
  private $merchantName;

  /**
   * Cidade do titular da conta
   * @var string
   */
  private $merchantCity;

  /**
   * ID de transação Pix
   * @var string
   */
  private $txid;

  /**
   * Valor da transação
   * @var string
   */
  private $amount;

  /**
   * Método responsável por definir o valor de $pixKey
   * @param string $pixKey
   */
  public function setPixKey($pixKey) {
    $this->pixKey = $pixKey;
    return $this;
  }

  /**
   * Método responsável por definir o valor de $description
   * @param string $description
   */
  public function setDescription($description) {
    $this->description = $description;
    return $this;
  }

  /**
   * Método responsável por definir o valor de $merchantName
   * @param string $merchantName
   */
  public function setMerchantName($merchantName) {
    $this->merchantName = $merchantName;
    return $this;
  }

  /**
   * Método responsável por definir o valor de $merchantCity
   * @param string $merchantCity
   */
  public function setMerchantCity($merchantCity) {
    $this->merchantCity = $merchantCity;
    return $this;
  }

  /**
   * Método responsável por definir o valor de $txid
   * @param string $txid
   */
  public function setTxid($txid) {
    $this->txid = $txid;
    return $this;
  }

    /**
     * @param $amount
     * @return $this
     */
  public function setAmount($amount) {
      $this->amount = number_format($amount, 2, ',', '.');
    return $this;
  }

  /**
   * Método responsável por retornar o valor completo de um objeto pauload
   * @param string $id
   * @param string $value
   * @return string $id.$size.$value
   */
  private function getValue($id, $value) {
    $size = str_pad(strlen($value), 2, '0', STR_PAD_LEFT);

    return $id.$size.$value;
  }

  /**
   * Método responsável por retornar valores completos da informação da conta
   * @return string
   */
  private function getMerchantAccountInformation() {
    // Domínio do Banco Central
    $gui = $this->getValue(self::ID_MERCHANT_ACCOUNT_INFORMATION_GUI, 'br.gov.bcb.pix');

    // Chave Pix
    $key = $this->getValue(self::ID_MERCHANT_ACCOUNT_INFORMATION_CHAVE, $this->pixKey);

    // Descrição do pagamento
    $description = 
    strlen($this->description) ? 
    $this->getValue(self::ID_MERCHANT_ACCOUNT_INFORMATION_DESCRIPTION, $this->description) :
    '';

    // Retorna o valor completo da conta
    return $this->getValue(self::ID_MERCHANT_ACCOUNT_INFORMATION, $gui.$key.$description);
  }

  /**
   * Método responsável por retornar os valores completos do campo adicional do pix ($txid)
   * @return string
   */
  private function getAdditionalDataFieldTemplate() {
    // txid
    $txid = $this->getValue(self::ID_ADDITIONAL_DATA_FIELD_TEMPLATE_TXID, $this->txid);

    // Retorna o valor completo
    return $this->getValue(self::ID_ADDITIONAL_DATA_FIELD_TEMPLATE, $txid);
  }

  /**
   * Método responsável por calcular o valor da hash de validação do código pix
   * @return string
   */
  private function getCRC16($payload) {
    // Adiciona dados gerais do payload
    $payload .= self::ID_CRC16.'04';

    // Dados definidos pelo Bacen
    $polinomio = 0x1021;
    $resultado = 0xFFFF;

    // Checksum 
    if (($length = strlen($payload)) > 0) {
        for ($offset = 0; $offset < $length; $offset++) {
            $resultado ^= (ord($payload[$offset]) << 8);
            for ($bitwise = 0; $bitwise < 8; $bitwise++) {
                if (($resultado <<= 1) & 0x10000) $resultado ^= $polinomio;
                $resultado &= 0xFFFF;
            }
        }
    }

    // Retorna o código CRC16 de 4 caractéres
    return self::ID_CRC16.'04'.strtoupper(dechex($resultado));
  }

  /**
   * Método responsável por gerar o código completo do payload Pix
   * @return string
   */
  public function getPayload() {
    // Cria o $payload
    $payload = 
      $this->getValue(self::ID_PAYLOAD_FORMAT_INDICATOR, '01') . 
      $this->getMerchantAccountInformation() . 
      $this->getValue(self::ID_MERCHANT_CATEGORY_CODE, '0000') .
      $this->getValue(self::ID_TRANSACTION_CURRENCY, '986') .
      $this->getValue(self::ID_TRANSACTION_AMOUNT, $this->amount) .
      $this->getValue(self::ID_COUNTRY_CODE, 'BR') .
      $this->getValue(self::ID_MERCHANT_NAME, $this->merchantName) .
      $this->getValue(self::ID_MERCHANT_CITY, $this->merchantCity) . 
      $this->getAdditionalDataFieldTemplate();

    // Retorna o payload + CRC16
    return $payload.$this->getCRC16($payload);
  }

    /**
     * @param $payload
     * @param $size
     * @return string
     * @throws \Mpdf\QrCode\QrCodeException
     */
  public function qrcode($payload, $size=400){
      $objQrcode = new QrCode($payload);
      return (new Output\Png)->output($objQrcode, $size);
  }
}

1			<?php
2
3			namespace BMorais\Pix;
4
5			use Mpdf\QrCode\Output;
6			use Mpdf\QrCode\QrCode;
7
8			/**
9			* CLASSE PIX
10			* Esta classe é responsavel por gerar o pix
11			*
12			* @author Bruno Morais <[email protected]>
13			* @copyright GPL © 2022, bmorais.com
14			* @package bmorais\pix
15			* @subpackage class
16			* @access private
17			*/
18			class Pix {
19
20			/**
21			* IDs do Payload do Pix
22			* @var string
23			*/
24			const ID_PAYLOAD_FORMAT_INDICATOR = '00';
25			const ID_MERCHANT_ACCOUNT_INFORMATION = '26';
26
27			const ID_MERCHANT_ACCOUNT_INFORMATION_GUI = '00';
28			const ID_MERCHANT_ACCOUNT_INFORMATION_CHAVE = '01';
29			const ID_MERCHANT_ACCOUNT_INFORMATION_DESCRIPTION = '02';
30
31			const ID_MERCHANT_CATEGORY_CODE = '52';
32			const ID_TRANSACTION_CURRENCY = '53';
33			const ID_TRANSACTION_AMOUNT = '54';
34			const ID_COUNTRY_CODE = '58';
35			const ID_MERCHANT_NAME = '59';
36			const ID_MERCHANT_CITY = '60';
37
38			const ID_ADDITIONAL_DATA_FIELD_TEMPLATE = '62';
39			const ID_ADDITIONAL_DATA_FIELD_TEMPLATE_TXID = '05';
40
41			const ID_CRC16 = '63';
42
43			/**
44			* Chave Pix
45			* @var string
46			*/
47			private $pixKey;
48
49			/**
50			* Descrição do pagamento
51			* @var string
52			*/
53			private $description;
54
55			/**
56			* Nome do titular da conta
57			* @var string
58			*/
59			private $merchantName;
60
61			/**
62			* Cidade do titular da conta
63			* @var string
64			*/
65			private $merchantCity;
66
67			/**
68			* ID de transação Pix
69			* @var string
70			*/
71			private $txid;
72
73			/**
74			* Valor da transação
75			* @var string
76			*/
77			private $amount;
78
79			/**
80			* Método responsável por definir o valor de $pixKey
81			* @param string $pixKey
82			*/
83			public function setPixKey($pixKey) {
84			$this->pixKey = $pixKey;
85			return $this;
86			}
87
88			/**
89			* Método responsável por definir o valor de $description
90			* @param string $description
91			*/
92			public function setDescription($description) {
93			$this->description = $description;
94			return $this;
95			}
96
97			/**
98			* Método responsável por definir o valor de $merchantName
99			* @param string $merchantName
100			*/
101			public function setMerchantName($merchantName) {
102			$this->merchantName = $merchantName;
103			return $this;
104			}
105
106			/**
107			* Método responsável por definir o valor de $merchantCity
108			* @param string $merchantCity
109			*/
110			public function setMerchantCity($merchantCity) {
111			$this->merchantCity = $merchantCity;
112			return $this;
113			}
114
115			/**
116			* Método responsável por definir o valor de $txid
117			* @param string $txid
118			*/
119			public function setTxid($txid) {
120			$this->txid = $txid;
121			return $this;
122			}
123
124			/**
125			* @param $amount
126			* @return $this
127			*/
128			public function setAmount($amount) {
129			$this->amount = number_format($amount, 2, ',', '.');
130			return $this;
131			}
132
133			/**
134			* Método responsável por retornar o valor completo de um objeto pauload
135			* @param string $id
136			* @param string $value
137			* @return string $id.$size.$value
138			*/
139			private function getValue($id, $value) {
140			$size = str_pad(strlen($value), 2, '0', STR_PAD_LEFT);
141
142			return $id.$size.$value;
143			}
144
145			/**
146			* Método responsável por retornar valores completos da informação da conta
147			* @return string
148			*/
149			private function getMerchantAccountInformation() {
150			// Domínio do Banco Central
151			$gui = $this->getValue(self::ID_MERCHANT_ACCOUNT_INFORMATION_GUI, 'br.gov.bcb.pix');
152
153			// Chave Pix
154			$key = $this->getValue(self::ID_MERCHANT_ACCOUNT_INFORMATION_CHAVE, $this->pixKey);
155
156			// Descrição do pagamento
157			$description =
158			strlen($this->description) ?
159			$this->getValue(self::ID_MERCHANT_ACCOUNT_INFORMATION_DESCRIPTION, $this->description) :
160			'';
161
162			// Retorna o valor completo da conta
163			return $this->getValue(self::ID_MERCHANT_ACCOUNT_INFORMATION, $gui.$key.$description);
164			}
165
166			/**
167			* Método responsável por retornar os valores completos do campo adicional do pix ($txid)
168			* @return string
169			*/
170			private function getAdditionalDataFieldTemplate() {
171			// txid
172			$txid = $this->getValue(self::ID_ADDITIONAL_DATA_FIELD_TEMPLATE_TXID, $this->txid);
173
174			// Retorna o valor completo
175			return $this->getValue(self::ID_ADDITIONAL_DATA_FIELD_TEMPLATE, $txid);
176			}
177
178			/**
179			* Método responsável por calcular o valor da hash de validação do código pix
180			* @return string
181			*/
182			private function getCRC16($payload) {
183			// Adiciona dados gerais do payload
184			$payload .= self::ID_CRC16.'04';
185
186			// Dados definidos pelo Bacen
187			$polinomio = 0x1021;
188			$resultado = 0xFFFF;
189
190			// Checksum
191			if (($length = strlen($payload)) > 0) {
192			for ($offset = 0; $offset < $length; $offset++) {
193			$resultado ^= (ord($payload[$offset]) << 8);
194			for ($bitwise = 0; $bitwise < 8; $bitwise++) {
195			if (($resultado <<= 1) & 0x10000) $resultado ^= $polinomio;
196			$resultado &= 0xFFFF;
197			}
198			}
199			}
200
201			// Retorna o código CRC16 de 4 caractéres
202			return self::ID_CRC16.'04'.strtoupper(dechex($resultado));
203			}
204
205			/**
206			* Método responsável por gerar o código completo do payload Pix
207			* @return string
208			*/
209			public function getPayload() {
210			// Cria o $payload
211			$payload =
212			$this->getValue(self::ID_PAYLOAD_FORMAT_INDICATOR, '01') .
213			$this->getMerchantAccountInformation() .
214			$this->getValue(self::ID_MERCHANT_CATEGORY_CODE, '0000') .
215			$this->getValue(self::ID_TRANSACTION_CURRENCY, '986') .
216			$this->getValue(self::ID_TRANSACTION_AMOUNT, $this->amount) .
217			$this->getValue(self::ID_COUNTRY_CODE, 'BR') .
218			$this->getValue(self::ID_MERCHANT_NAME, $this->merchantName) .
219			$this->getValue(self::ID_MERCHANT_CITY, $this->merchantCity) .
220			$this->getAdditionalDataFieldTemplate();
221
222			// Retorna o payload + CRC16
223			return $payload.$this->getCRC16($payload);
224			}
225
226			/**
227			* @param $payload
228			* @param $size
229			* @return string
230			* @throws \Mpdf\QrCode\QrCodeException
231			*/
232			public function qrcode($payload, $size=400){
233			$objQrcode = new QrCode($payload);
234			return (new Output\Png)->output($objQrcode, $size);
235			}
236			}

brunobmorais / php-pix

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Pix::qrcode() A

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