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<?php |
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namespace TheAentMachine\Helper; |
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use Symfony\Component\Console\Helper\QuestionHelper; |
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use Symfony\Component\Console\Input\InputInterface; |
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use Symfony\Component\Console\Output\OutputInterface; |
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/** |
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* A helper class to easily create questions. |
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*/ |
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class Question |
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{ |
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/** |
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* @var QuestionHelper |
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*/ |
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private $helper; |
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/** |
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* @var InputInterface |
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*/ |
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private $input; |
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/** |
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* @var OutputInterface |
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*/ |
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private $output; |
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/** |
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* @var string |
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*/ |
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private $question; |
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/** |
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* @var string|null |
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*/ |
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private $default; |
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/** |
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* @var bool |
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*/ |
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private $compulsory = false; |
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/** |
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* @var callable |
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*/ |
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private $validator; |
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/** |
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* @var string|null |
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*/ |
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private $helpText; |
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/** |
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* @var bool |
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*/ |
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private $yesNoQuestion = false; |
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public function __construct(QuestionHelper $helper, InputInterface $input, OutputInterface $output, string $question) |
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{ |
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$this->helper = $helper; |
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$this->input = $input; |
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$this->output = $output; |
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$this->question = $question; |
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} |
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public function compulsory(): self |
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{ |
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$this->compulsory = true; |
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return $this; |
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} |
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public function setValidator(callable $validator): self |
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{ |
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$this->validator = $validator; |
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return $this; |
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} |
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public function setHelpText(string $helpText): self |
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{ |
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$this->helpText = $helpText; |
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return $this; |
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} |
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public function setDefault(string $default): self |
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{ |
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$this->default = $default; |
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return $this; |
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} |
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public function yesNoQuestion(): self |
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{ |
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$this->yesNoQuestion = true; |
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return $this; |
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} |
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public function ask() |
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{ |
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$text = $this->question; |
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if ($this->helpText) { |
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$text .= ' (? for help)'; |
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} |
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if ($this->default) { |
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if (!$this->yesNoQuestion) { |
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$text .= ' ['.$this->default.']'; |
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} elseif ($this->default === 'y') { |
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$text .= ' [Y/n]'; |
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} elseif ($this->default === 'n') { |
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$text .= ' [y/N]'; |
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} else { |
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$text .= ' [y/n]'; |
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} |
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} |
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$text .= ': '; |
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$question = new \Symfony\Component\Console\Question\Question($text, $this->default); |
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$validator = $this->validator; |
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if ($this->yesNoQuestion) { |
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$validator = function(?string $response) use ($validator) { |
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$response = trim(\strtolower($response)); |
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if (!\in_array($response, ['y', 'n', 'yes', 'no'])) { |
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throw new \InvalidArgumentException('Answer must be "y" or "n"'); |
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} |
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$response = \in_array($response, ['y', 'yes']) ? '1' : ''; |
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return $validator ? $validator($response) : $response; |
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}; |
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} |
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if ($this->helpText) { |
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$validator = function(?string $response) use ($validator) { |
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if (trim($response) === '?') { |
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$this->output->writeln($this->helpText); |
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return '?'; |
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} |
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return $validator ? $validator($response) : $response; |
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}; |
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} |
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if ($this->compulsory) { |
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$validator = function(?string $response) use ($validator) { |
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if (trim($response) === '') { |
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throw new \InvalidArgumentException('This field is compulsory.'); |
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} |
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return $validator ? $validator($response) : $response; |
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}; |
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} |
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$question->setValidator($validator); |
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do { |
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$answer = $this->helper->ask($this->input, $this->output, $question); |
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} while ($this->helpText !== null && $answer === '?'); |
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return $answer; |
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} |
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} |
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theaentmachine /
aent-console
