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IsUnique.php
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<?php
/**
* JBZoo Toolbox - Csv-Blueprint.
*
* This file is part of the JBZoo Toolbox project.
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*
* @license MIT
* @copyright Copyright (C) JBZoo.com, All rights reserved.
* @see https://github.com/JBZoo/Csv-Blueprint
*/
declare(strict_types=1);
namespace JBZoo\CsvBlueprint\Rules\Aggregate;
use JBZoo\CsvBlueprint\Rules\AbstractRule;
final class IsUnique extends AbstractAggregateRule
{
public const INPUT_TYPE = AbstractRule::INPUT_TYPE_STRINGS;
public function getHelpMeta(): array
{
return [
[],
[self::DEFAULT => ['true', 'All values in the column are unique.']],
];
}
public function validateRule(array $columnValues): ?string
{
if (\count($columnValues) === 0) {
return null;
}
if (self::analyzeColumnValues($columnValues) === false) {
$uValuesCount = \count(\array_unique($columnValues));
$valuesCount = \count($columnValues);
return 'Column has non-unique values. ' .
"Unique: <c>{$uValuesCount}</c>, total: <green>{$valuesCount}</green>";
}
return null;
}
public static function analyzeColumnValues(array $columnValues): array|bool|float|int|string
{
$uValuesCount = \count(\array_unique($columnValues));
$valuesCount = \count($columnValues);
return $uValuesCount === $valuesCount;
}
}