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<?php |
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namespace LeKoala\Tin\Algo; |
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use LeKoala\Tin\Util\DateUtil; |
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use LeKoala\Tin\Util\StringUtil; |
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/** |
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* Finland |
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*/ |
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class FIAlgorithm extends TINAlgorithm |
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{ |
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const LENGTH = 11; |
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const PATTERN = "[0-3]\\d[0-1]\\d{3}[+-A]\\d{3}[0-9A-Z]"; |
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public function validate(string $tin) |
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{ |
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if (!$this->isFollowLength($tin)) { |
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return StatusCode::INVALID_LENGTH; |
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} |
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if (!$this->isFollowPattern($tin) || !$this->isValidDate($tin)) { |
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return StatusCode::INVALID_PATTERN; |
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} |
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if (!$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 isFollowLength(string $tin) |
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{ |
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return StringUtil::isFollowLength($tin, self::LENGTH); |
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} |
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public function isFollowPattern(string $tin) |
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{ |
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return StringUtil::isFollowPattern($tin, self::PATTERN); |
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} |
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public function isFollowRules(string $tin) |
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{ |
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return $this->isFollowFinlandRule($tin); |
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} |
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public function isFollowFinlandRule(string $tin) |
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{ |
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$number = intval(StringUtil::substring($tin, 0, 6) . StringUtil::substring($tin, 7, 10)); |
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$remainderBy31 = $number % 31; |
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$c11 = $tin[10]; |
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return $this->getMatch($remainderBy31) == $c11; |
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} |
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public function getMatch($number) |
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{ |
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if ($number < 10) { |
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return StringUtil::forDigit($number, 10); |
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} |
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switch ($number) { |
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case 10: |
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return 'A'; |
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case 11: |
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return 'B'; |
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case 12: |
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return 'C'; |
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case 13: |
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return 'D'; |
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case 14: |
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return 'E'; |
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case 15: |
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return 'F'; |
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case 16: |
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return 'H'; |
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case 17: |
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return 'J'; |
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case 18: |
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return 'K'; |
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case 19: |
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return 'L'; |
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case 20: |
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return 'M'; |
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case 21: |
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return 'N'; |
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case 22: |
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return 'P'; |
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case 23: |
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return 'R'; |
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case 24: |
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return 'S'; |
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case 25: |
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return 'T'; |
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case 26: |
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return 'U'; |
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case 27: |
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return 'V'; |
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case 28: |
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return 'W'; |
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case 29: |
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return 'X'; |
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case 30: |
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return 'Y'; |
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default: |
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return ' '; |
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} |
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} |
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private function isValidDate(string $tin) |
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{ |
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$day = intval(StringUtil::substring($tin, 0, 2)); |
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$month = intval(StringUtil::substring($tin, 2, 4)); |
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$year = intval(StringUtil::substring($tin, 4, 6)); |
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$c7 = StringUtil::substring($tin, 6, 7); |
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if ("+" == $c7) { |
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return DateUtil::validate(1800 + $year, $month, $day); |
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} |
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if ("-" == $c7) { |
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return DateUtil::validate(1900 + $year, $month, $day); |
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} |
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return "A" == $c7 && DateUtil::validate(2000 + $year, $month, $day); |
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} |
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} |
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lekoala /
tin
