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Enhancement: Extract phpweb\Spam\Challenge
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,203 @@ | ||
| <?php | ||
|
|
||
| declare(strict_types=1); | ||
|
|
||
| namespace phpweb\Spam; | ||
|
|
||
| final class Challenge | ||
| { | ||
| private const NUM = array( | ||
| 0 => 'zero', | ||
| 1 => 'one', | ||
| 2 => 'two', | ||
| 3 => 'three', | ||
| 4 => 'four', | ||
| 5 => 'five', | ||
| 6 => 'six', | ||
| 7 => 'seven', | ||
| 8 => 'eight', | ||
| 9 => 'nine', | ||
| ); | ||
|
|
||
| private const CHALLENGES = array( | ||
| // name, print, generator | ||
| 'max' => array( | ||
| 'max', | ||
| [ | ||
| self::class, | ||
| 'print_prefix' | ||
| ], | ||
| ), | ||
| 'min' => array( | ||
| 'min', | ||
| [ | ||
| self::class, | ||
| 'print_prefix' | ||
| ], | ||
| ), | ||
| 'minus' => array( | ||
| [ | ||
| self::class, | ||
| 'minus' | ||
| ], | ||
| [ | ||
| self::class, | ||
| 'print_infix' | ||
| ], | ||
| [ | ||
| self::class, | ||
| 'gen_minus' | ||
| ], | ||
| ), | ||
| 'plus' => array( | ||
| [ | ||
| self::class, | ||
| 'plus' | ||
| ], | ||
| [ | ||
| self::class, | ||
| 'print_infix' | ||
| ], | ||
| [ | ||
| self::class, | ||
| 'gen_plus' | ||
| ], | ||
| ), | ||
| ); | ||
|
|
||
| /** | ||
| * @var string | ||
| */ | ||
| private $function; | ||
|
|
||
| /** | ||
| * @var string | ||
| */ | ||
| private $argumentOne; | ||
|
|
||
| /** | ||
| * @var string | ||
| */ | ||
| private $argumentTwo; | ||
|
|
||
| /** | ||
| * @var string | ||
| */ | ||
| private $question; | ||
|
|
||
| private function __construct( | ||
| string $function, | ||
| string $argumentOne, | ||
| string $argumentTwo, | ||
| string $question | ||
| ) { | ||
| $this->function = $function; | ||
| $this->argumentOne = $argumentOne; | ||
| $this->argumentTwo = $argumentTwo; | ||
| $this->question = $question; | ||
| } | ||
|
|
||
| public static function create(): self | ||
| { | ||
| $function = array_rand(self::CHALLENGES); | ||
|
|
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| $challenge = self::CHALLENGES[$function]; | ||
|
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| $a = rand(0, 9); | ||
| $argumentOne = self::NUM[$a]; | ||
| $b = isset($challenge[2]) ? $challenge[2]($a) : rand(0, 9); | ||
| $argumentTwo = self::NUM[$b]; | ||
|
|
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| $question = $challenge[1]( | ||
| $function, | ||
| $argumentOne, | ||
| $argumentTwo | ||
| ); | ||
|
|
||
| return new self( | ||
| $function, | ||
| $argumentOne, | ||
| $argumentTwo, | ||
| $question | ||
| ); | ||
| } | ||
|
|
||
| public static function isValidAnswer( | ||
| $function, | ||
| $argumentOne, | ||
| $argumentTwo, | ||
| $answer | ||
| ): bool { | ||
| if (!is_string($function)) { | ||
| return false; | ||
| } | ||
|
|
||
| if (!array_key_exists($function, self::CHALLENGES)) { | ||
| return false; | ||
| } | ||
|
|
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| $challenge = self::CHALLENGES[$function]; | ||
|
|
||
| if (!is_array($challenge)) { | ||
| return false; | ||
| } | ||
|
|
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| $a = array_search($argumentOne, self::NUM, false); | ||
|
|
||
| if (!is_int($a)) { | ||
| return false; | ||
| } | ||
|
|
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| $b = array_search($argumentTwo, self::NUM, false); | ||
|
|
||
| if (!is_int($b)) { | ||
| return false; | ||
| } | ||
|
|
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| return self::NUM[$challenge[0]($a, $b)] === $answer; | ||
| } | ||
|
|
||
| public static function plus($a, $b) { | ||
| return $a + $b; | ||
| } | ||
|
|
||
| public static function gen_plus($a) { | ||
| return rand(0, 9 - $a); | ||
| } | ||
|
|
||
| public static function minus($a, $b) { | ||
| return $a - $b; | ||
| } | ||
|
|
||
| public static function gen_minus($a) { | ||
| return rand(0, $a); | ||
| } | ||
|
|
||
| public static function print_infix($name, $a, $b) { | ||
| return "$a $name $b"; | ||
| } | ||
|
|
||
| public static function print_prefix($name, $a, $b) { | ||
| return "$name($a, $b)"; | ||
| } | ||
|
|
||
| public function function(): string | ||
| { | ||
| return $this->function; | ||
| } | ||
|
|
||
| public function argumentOne(): string | ||
| { | ||
| return $this->argumentOne; | ||
| } | ||
|
|
||
| public function argumentTwo(): string | ||
| { | ||
| return $this->argumentTwo; | ||
| } | ||
|
|
||
| public function question(): string | ||
| { | ||
| return $this->question; | ||
| } | ||
| } |
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