38 lines
764 B
PHP
38 lines
764 B
PHP
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<?php
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namespace App\Services\SmsBilling;
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class SmsSegmentCalculator
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{
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private const PERSIAN_LIMITS = [70, 64, 67];
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public function countParts(string $text): int
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{
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$length = mb_strlen(trim($text), 'UTF-8');
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if ($length <= 0) {
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return 0;
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}
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$first = self::PERSIAN_LIMITS[0];
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$second = self::PERSIAN_LIMITS[1];
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$rest = self::PERSIAN_LIMITS[2];
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if ($length <= $first) {
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return 1;
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}
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if ($length <= $first + $second) {
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return 2;
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}
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$thirdThreshold = $first + $second + $rest;
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if ($length <= $thirdThreshold) {
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return 3;
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}
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return 3 + (int) ceil(($length - $thirdThreshold) / $rest);
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}
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}
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