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<?php |
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namespace Tgallice\FBMessenger\Model; |
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class Button implements \JsonSerializable |
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{ |
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const TYPE_POSTBACK = 'postback'; |
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const TYPE_PHONE_NUMBER = 'phone_number'; |
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const TYPE_WEB_URL = 'web_url'; |
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/** |
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* @var string |
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*/ |
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private $title; |
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/** |
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* @var string |
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*/ |
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private $type; |
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/** |
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* Url or payload |
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* |
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* @var string |
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*/ |
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protected $data; |
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/** |
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* @param string $type |
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* @param string $title |
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* @param string $data Url, phone number or payload value |
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*/ |
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public function __construct($type, $title, $data) |
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{ |
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$this->type = $type; |
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$this->validateTitleSize($title); |
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$this->title = $title; |
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if ($this->type === self::TYPE_POSTBACK) { |
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$this->validatePayload($data); |
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} elseif ($this->type === self::TYPE_PHONE_NUMBER) { |
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$this->validatePhoneNumber($data); |
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} |
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$this->data = $data; |
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} |
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/** |
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* @return string |
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*/ |
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public function getType() |
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{ |
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return $this->type; |
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} |
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/** |
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* @return string |
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*/ |
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public function getTitle() |
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{ |
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return $this->title; |
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} |
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/** |
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* @return string |
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*/ |
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public function getData() |
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{ |
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return $this->data; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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2 |
View Code Duplication |
public function jsonSerialize() |
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{ |
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$data = [ |
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'type' => $this->type, |
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'title' => $this->title, |
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]; |
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if ($this->type === self::TYPE_WEB_URL) { |
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$data['url'] = $this->data; |
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} else { |
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$data['payload'] = $this->data; |
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} |
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return $data; |
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} |
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/** |
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* @param string $title |
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* |
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* @throws \InvalidArgumentException |
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*/ |
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private function validateTitleSize($title) |
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{ |
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if (mb_strlen($title) > 20) { |
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throw new \InvalidArgumentException('The button title field should not exceed 20 characters.'); |
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} |
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} |
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/** |
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* @param $payload |
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* |
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* @throws \InvalidArgumentException |
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*/ |
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private function validatePayload($payload) |
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{ |
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if (mb_strlen($payload) > 1000) { |
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throw new \InvalidArgumentException(sprintf( |
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'Payload should not exceed 1000 characters.', $payload) |
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); |
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} |
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} |
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/** |
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* @param $phoneNumber |
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* |
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* @throws \InvalidArgumentException |
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*/ |
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private function validatePhoneNumber($phoneNumber) |
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{ |
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// Dummy phone number check |
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if (strpos($phoneNumber, '+') !== 0) { |
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throw new \InvalidArgumentException(sprintf( |
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'The phone number "%s" seem to be invalid. Please check the documentation to format the phone number.', $phoneNumber) |
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); |
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} |
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} |
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} |
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tgallice /
fb-messenger-sdk
