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<?php
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namespace PhpOffice\PhpSpreadsheet\Calculation\TextData;
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use PhpOffice\PhpSpreadsheet\Calculation\ArrayEnabled;
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use PhpOffice\PhpSpreadsheet\Calculation\Exception as CalcExp;
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use PhpOffice\PhpSpreadsheet\Calculation\Functions;
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use PhpOffice\PhpSpreadsheet\Calculation\Information\ExcelError;
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use PhpOffice\PhpSpreadsheet\Cell\DataType;
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use PhpOffice\PhpSpreadsheet\Shared\StringHelper;
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class Replace
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{
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    use ArrayEnabled;
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    /**
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     * REPLACE.
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     *
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     * @param mixed $oldText The text string value to modify
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     *                         Or can be an array of values
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     * @param mixed $start Integer offset for start character of the replacement
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     *                         Or can be an array of values
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     * @param mixed $chars Integer number of characters to replace from the start offset
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     *                         Or can be an array of values
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     * @param mixed $newText String to replace in the defined position
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     *                         Or can be an array of values
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     *
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     * @return array|string If an array of values is passed for either of the arguments, then the returned result
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     *            will also be an array with matching dimensions
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     */
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    public static function replace(mixed $oldText, mixed $start, mixed $chars, mixed $newText): array|string
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    {
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        if (is_array($oldText) || is_array($start) || is_array($chars) || is_array($newText)) {
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            return self::evaluateArrayArguments([self::class, __FUNCTION__], $oldText, $start, $chars, $newText);
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        }
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        try {
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            $start = Helpers::extractInt($start, 1, 0, true);
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            $chars = Helpers::extractInt($chars, 0, 0, true);
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            $oldText = Helpers::extractString($oldText, true);
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            $newText = Helpers::extractString($newText, true);
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            $left = StringHelper::substring($oldText, 0, $start - 1);
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            $right = StringHelper::substring($oldText, $start + $chars - 1, null);
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        } catch (CalcExp $e) {
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            return $e->getMessage();
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        }
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        $returnValue = $left . $newText . $right;
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        if (StringHelper::countCharacters($returnValue) > DataType::MAX_STRING_LENGTH) {
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            $returnValue = ExcelError::VALUE();
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        }
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        return $returnValue;
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    }
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    /**
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     * SUBSTITUTE.
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     *
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     * @param mixed $text The text string value to modify
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     *                         Or can be an array of values
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     * @param mixed $fromText The string value that we want to replace in $text
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     *                         Or can be an array of values
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     * @param mixed $toText The string value that we want to replace with in $text
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     *                         Or can be an array of values
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     * @param mixed $instance Integer instance Number for the occurrence of frmText to change
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     *                         Or can be an array of values
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     *
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     * @return array|string If an array of values is passed for either of the arguments, then the returned result
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     *            will also be an array with matching dimensions
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     */
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    public static function substitute(mixed $text = '', mixed $fromText = '', mixed $toText = '', mixed $instance = null): array|string
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    {
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        if (is_array($text) || is_array($fromText) || is_array($toText) || is_array($instance)) {
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            return self::evaluateArrayArguments([self::class, __FUNCTION__], $text, $fromText, $toText, $instance);
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        }
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        try {
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            $text = Helpers::extractString($text, true);
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            $fromText = Helpers::extractString($fromText, true);
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            $toText = Helpers::extractString($toText, true);
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            if ($instance === null) {
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                $returnValue = str_replace($fromText, $toText, $text);
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            } else {
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                if (is_bool($instance)) {
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                    if ($instance === false || Functions::getCompatibilityMode() !== Functions::COMPATIBILITY_OPENOFFICE) {
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                        return ExcelError::Value();
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                    }
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                    $instance = 1;
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                }
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                $instance = Helpers::extractInt($instance, 1, 0, true);
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                $returnValue = self::executeSubstitution($text, $fromText, $toText, $instance);
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            }
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        } catch (CalcExp $e) {
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            return $e->getMessage();
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        }
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        if (StringHelper::countCharacters($returnValue) > DataType::MAX_STRING_LENGTH) {
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            $returnValue = ExcelError::VALUE();
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        }
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        return $returnValue;
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    }
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    private static function executeSubstitution(string $text, string $fromText, string $toText, int $instance): string
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    {
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        $pos = -1;
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        while ($instance > 0) {
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            $pos = mb_strpos($text, $fromText, $pos + 1, 'UTF-8');
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            if ($pos === false) {
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                return $text;
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            }
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            --$instance;
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        }
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        return Functions::scalar(self::REPLACE($text, ++$pos, StringHelper::countCharacters($fromText), $toText));
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    }
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}