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    <h3>Editing: GenerateUuidCommand.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier &lt;fabien@symfony.com&gt;
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Uid\Command;

use Symfony\Component\Console\Attribute\AsCommand;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Completion\CompletionInput;
use Symfony\Component\Console\Completion\CompletionSuggestions;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\ConsoleOutputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Style\SymfonyStyle;
use Symfony\Component\Uid\Factory\UuidFactory;
use Symfony\Component\Uid\Uuid;

#[AsCommand(name: 'uuid:generate', description: 'Generate a UUID')]
class GenerateUuidCommand extends Command
{
    private UuidFactory $factory;

    public function __construct(UuidFactory $factory = null)
    {
        $this-&gt;factory = $factory ?? new UuidFactory();

        parent::__construct();
    }

    protected function configure(): void
    {
        $this
            -&gt;setDefinition([
                new InputOption('time-based', null, InputOption::VALUE_REQUIRED, 'The timestamp, to generate a time-based UUID: a parsable date/time string'),
                new InputOption('node', null, InputOption::VALUE_REQUIRED, 'The UUID whose node part should be used as the node of the generated UUID'),
                new InputOption('name-based', null, InputOption::VALUE_REQUIRED, 'The name, to generate a name-based UUID'),
                new InputOption('namespace', null, InputOption::VALUE_REQUIRED, 'The UUID to use at the namespace for named-based UUIDs, predefined namespaces keywords &quot;dns&quot;, &quot;url&quot;, &quot;oid&quot; and &quot;x500&quot; are accepted'),
                new InputOption('random-based', null, InputOption::VALUE_NONE, 'To generate a random-based UUID'),
                new InputOption('count', 'c', InputOption::VALUE_REQUIRED, 'The number of UUID to generate', 1),
                new InputOption('format', 'f', InputOption::VALUE_REQUIRED, 'The UUID output format: rfc4122, base58 or base32', 'rfc4122'),
            ])
            -&gt;setHelp(&lt;&lt;&lt;'EOF'
The &lt;info&gt;%command.name%&lt;/info&gt; generates a UUID.

    &lt;info&gt;php %command.full_name%&lt;/info&gt;

To generate a time-based UUID:

    &lt;info&gt;php %command.full_name% --time-based=now&lt;/info&gt;

To specify a time-based UUID's node:

    &lt;info&gt;php %command.full_name% --time-based=@1613480254 --node=fb3502dc-137e-4849-8886-ac90d07f64a7&lt;/info&gt;

To generate a name-based UUID:

    &lt;info&gt;php %command.full_name% --name-based=foo&lt;/info&gt;

To specify a name-based UUID's namespace:

    &lt;info&gt;php %command.full_name% --name-based=bar --namespace=fb3502dc-137e-4849-8886-ac90d07f64a7&lt;/info&gt;

To generate a random-based UUID:

    &lt;info&gt;php %command.full_name% --random-based&lt;/info&gt;

To generate several UUIDs:

    &lt;info&gt;php %command.full_name% --count=10&lt;/info&gt;

To output a specific format:

    &lt;info&gt;php %command.full_name% --format=base58&lt;/info&gt;
EOF
            )
        ;
    }

    protected function execute(InputInterface $input, OutputInterface $output): int
    {
        $io = new SymfonyStyle($input, $output instanceof ConsoleOutputInterface ? $output-&gt;getErrorOutput() : $output);

        $time = $input-&gt;getOption('time-based');
        $node = $input-&gt;getOption('node');
        $name = $input-&gt;getOption('name-based');
        $namespace = $input-&gt;getOption('namespace');
        $random = $input-&gt;getOption('random-based');

        if (false !== ($time ?? $name ?? $random) &amp;&amp; 1 &lt; ((null !== $time) + (null !== $name) + $random)) {
            $io-&gt;error('Only one of &quot;--time-based&quot;, &quot;--name-based&quot; or &quot;--random-based&quot; can be provided at a time.');

            return 1;
        }

        if (null === $time &amp;&amp; null !== $node) {
            $io-&gt;error('Option &quot;--node&quot; can only be used with &quot;--time-based&quot;.');

            return 1;
        }

        if (null === $name &amp;&amp; null !== $namespace) {
            $io-&gt;error('Option &quot;--namespace&quot; can only be used with &quot;--name-based&quot;.');

            return 1;
        }

        switch (true) {
            case null !== $time:
                if (null !== $node) {
                    try {
                        $node = Uuid::fromString($node);
                    } catch (\InvalidArgumentException $e) {
                        $io-&gt;error(sprintf('Invalid node &quot;%s&quot;: %s', $node, $e-&gt;getMessage()));

                        return 1;
                    }
                }

                try {
                    new \DateTimeImmutable($time);
                } catch (\Exception $e) {
                    $io-&gt;error(sprintf('Invalid timestamp &quot;%s&quot;: %s', $time, str_replace('DateTimeImmutable::__construct(): ', '', $e-&gt;getMessage())));

                    return 1;
                }

                $create = function () use ($node, $time): Uuid {
                    return $this-&gt;factory-&gt;timeBased($node)-&gt;create(new \DateTimeImmutable($time));
                };
                break;

            case null !== $name:
                if ($namespace &amp;&amp; !\in_array($namespace, ['dns', 'url', 'oid', 'x500'], true)) {
                    try {
                        $namespace = Uuid::fromString($namespace);
                    } catch (\InvalidArgumentException $e) {
                        $io-&gt;error(sprintf('Invalid namespace &quot;%s&quot;: %s', $namespace, $e-&gt;getMessage()));

                        return 1;
                    }
                }

                $create = function () use ($namespace, $name): Uuid {
                    try {
                        $factory = $this-&gt;factory-&gt;nameBased($namespace);
                    } catch (\LogicException) {
                        throw new \InvalidArgumentException('Missing namespace: use the &quot;--namespace&quot; option or configure a default namespace in the underlying factory.');
                    }

                    return $factory-&gt;create($name);
                };
                break;

            case $random:
                $create = $this-&gt;factory-&gt;randomBased()-&gt;create(...);
                break;

            default:
                $create = $this-&gt;factory-&gt;create(...);
                break;
        }

        $formatOption = $input-&gt;getOption('format');

        if (\in_array($formatOption, $this-&gt;getAvailableFormatOptions())) {
            $format = 'to'.ucfirst($formatOption);
        } else {
            $io-&gt;error(sprintf('Invalid format &quot;%s&quot;, did you mean &quot;base32&quot;, &quot;base58&quot; or &quot;rfc4122&quot;?', $formatOption));

            return 1;
        }

        $count = (int) $input-&gt;getOption('count');
        try {
            for ($i = 0; $i &lt; $count; ++$i) {
                $output-&gt;writeln($create()-&gt;$format());
            }
        } catch (\Exception $e) {
            $io-&gt;error($e-&gt;getMessage());

            return 1;
        }

        return 0;
    }

    public function complete(CompletionInput $input, CompletionSuggestions $suggestions): void
    {
        if ($input-&gt;mustSuggestOptionValuesFor('format')) {
            $suggestions-&gt;suggestValues($this-&gt;getAvailableFormatOptions());
        }
    }

    private function getAvailableFormatOptions(): array
    {
        return [
            'base32',
            'base58',
            'rfc4122',
        ];
    }
}
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