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<?php |
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namespace LeKoala\Tin\Algo; |
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use LeKoala\Tin\Util\StringUtil; |
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/** |
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* Ireland |
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*/ |
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class IEAlgorithm extends TINAlgorithm |
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{ |
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const LENGTH_1 = 9; |
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const PATTERN_1 = "\\d{7}[a-wA-W]([a-iA-I]|W)"; |
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const LENGTH_2 = 8; |
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const PATTERN_2 = "\\d{7}[a-wA-W]"; |
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public function validate(string $tin) |
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{ |
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if (!$this->isFollowLength1($tin) && !$this->isFollowLength2($tin)) { |
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return StatusCode::INVALID_LENGTH; |
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} |
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if (($this->isFollowLength1($tin) && !$this->isFollowPattern1($tin)) || ($this->isFollowLength2($tin) && !$this->isFollowPattern2($tin))) { |
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return StatusCode::INVALID_PATTERN; |
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} |
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if (!$this->isFollowRules($tin)) { |
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return StatusCode::INVALID_SYNTAX; |
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} |
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return StatusCode::VALID; |
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} |
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public function isFollowLength1(string $tin) |
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{ |
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return StringUtil::isFollowLength($tin, self::LENGTH_1); |
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} |
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public function isFollowPattern1(string $tin) |
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{ |
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return StringUtil::isFollowPattern($tin, self::PATTERN_1); |
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} |
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public function isFollowLength2(string $tin) |
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{ |
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return StringUtil::isFollowLength($tin, self::LENGTH_2); |
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} |
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public function isFollowPattern2(string $tin) |
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{ |
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return StringUtil::isFollowPattern($tin, self::PATTERN_2); |
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} |
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public function isFollowRules(string $tin) |
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{ |
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$c1 = StringUtil::digitAt($tin, 0); |
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$c2 = StringUtil::digitAt($tin, 1); |
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$c3 = StringUtil::digitAt($tin, 2); |
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$c4 = StringUtil::digitAt($tin, 3); |
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$c5 = StringUtil::digitAt($tin, 4); |
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$c6 = StringUtil::digitAt($tin, 5); |
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$c7 = StringUtil::digitAt($tin, 6); |
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$c8 = StringUtil::digitAt($tin, 7); |
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$c9 = (strlen($tin) >= 9) ? self::letterToNumber($tin[8]) : 0; |
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$c8 = $tin[7]; |
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$sum = $c9 * 9 + $c1 * 8 + $c2 * 7 + $c3 * 6 + $c4 * 5 + $c5 * 4 + $c6 * 3 + $c7 * 2; |
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$remainderBy23 = $sum % 23; |
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if ($remainderBy23 != 0) { |
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return StringUtil::getAlphabeticalPosition($c8) == $remainderBy23; |
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} |
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return $c8 == 'W' || $c8 == 'w'; |
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} |
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public static function letterToNumber(string $toConv) |
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{ |
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if (!$toConv) { |
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return 0; |
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} |
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if ($toConv == 'W' || $toConv == 'w') { |
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return 0; |
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} |
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return StringUtil::getAlphabeticalPosition($toConv); |
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} |
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} |
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lekoala /
tin
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