Console Service

Command Line Interface using Symfony Console as default implementation.

Table of Contents

• Getting started
  • Requirements
  • Highlights
• Documentation
  • Console
    • Create Console
    • Add Command
    • Run Console
    • Execute Command
  • Creating Commands
    • Command
      • Arguments and Options
    • Abstract Command
      • Using Signature
  • Interactor
    • Retrieving Argument and Option Values
    • Writing Output
    • Asking Questions
    • Progress Bar
    • Verbosity Levels
  • Locking
  • Signals
  • Events
  • Testing
  • Symfony
    • Symfony Console
    • Symfony Custom Interactor
• Credits

---

Getting started

Add the latest version of the console service project running this command.

composer require tobento/service-console

Requirements

• PHP 8.0 or greater

Highlights

• Framework-agnostic, will work with any project
• Decoupled design

Documentation

Console

Create Console

use Tobento\Service\Console\Symfony;
use Tobento\Service\Console\ConsoleInterface;
use Psr\Container\ContainerInterface;
use Psr\EventDispatcher\EventDispatcherInterface;

$console = new Symfony\Console(
    name: 'app',
    container: $container, // ContainerInterface
    
    // you may define a event dispatcher:
    eventDispatcher: $eventDispatcher, // EventDispatcherInterface
);

var_dump($console instanceof ConsoleInterface);
// bool(true)

Add Command

After Creating Commands you can add them in the console:

$console->addCommand(SampleCommand::class);

// or
$console->addCommand(new SampleCommand());

Run Console

$console->run();

Execute Command

You may want to execute a command instead of running the console.

use Tobento\Service\Console\ExecutedInterface;

$executed = $console->execute(
    command: SampleCommand::class,
    
    // passing arguments and options:
    input: [
        // passing arguments:
        'username' => 'Tom',

        // with array value:
        'username' => ['Tom', 'Tim'],

        // passing options:
        '--some-option' => 'value',

        // with array value:
        '--some-option' => ['value'],
    ]
);

var_dump($executed instanceof ExecutedInterface);
// bool(true)

$command = $executed->command(); // string
$code = $executed->code(); // int
$output = $executed->output(); // string

Example with command class

use Tobento\Service\Console\Command;
use Tobento\Service\Console\InteractorInterface;

$command = (new Command(name: 'name'))
    ->handle(function(InteractorInterface $io): int {
        // do sth:
        return 0;
    });
    
$console->execute(command: $command);

Example with command name

$console->addCommand(SampleCommand::class);

$console->execute(command: 'sample');

Creating Commands

Command

You may use the Command::class to create simple commands.

use Tobento\Service\Console\Command;
use Tobento\Service\Console\CommandInterface;
use Tobento\Service\Console\InteractorInterface;

$command = (new Command(name: 'mail:send'))
    // you may set a description:
    ->description('Send an email to a user(s)')
    
    // you may set a usage text:
    ->usage('Send emails ...')
    
    // you may add an argument(s):
    ->argument(
        name: 'user',
        description: 'The Id(s) of the user',
        variadic: true,
    )
    
    // you may add an option(s):
    ->option(
        name: 'queue',
        description: 'Whether the email should be queued',
    )
    
    // handle the command:
    ->handle(function(InteractorInterface $io, MailerInterface $mailer): int {
        // retrieve input arguments and options:
        $userIds = $io->argument('user');
        $queue = $io->option('queue');
        
        // send emails using the mailer...
        
        // you may write some output:
        $io->write(sprintf(
            'email(s) send to user ids %s queued [%s]',
            implode(',', $userIds),
            $queue ? 'true' : 'false',
        ));

        return Command::SUCCESS;
        // return Command::FAILURE;
        // return Command::INVALID;
    });
    
var_dump($command instanceof CommandInterface);
// bool(true)

Check out the Interactor section to learn more about it.

Arguments and Options

Arguments in detail

use Tobento\Service\Console\Command;

$command = (new Command(name: 'sample'))
    ->argument(
        // The name of the argument:
        name: 'name',

        // you may define a description:
        description: 'Some description',

        // you may define a default value(s) (null default):
        value: ['foo', 'bar'], // mixed

        // set if the argument is optional (false default):
        optional: true,

        // if true expecting multiple values (false default):
        variadic: true,

        // not supported yet!
        suggestedValues: null,
    );

Options in detail

use Tobento\Service\Console\Command;

$command = (new Command(name: 'sample'))
    ->option(
        // The name of the option:
        name: 'name',

        // you may define a description:
        description: 'Some description',

        // you may define a default value(s) (null default):
        value: ['foo', 'bar'], // mixed
        
        // variadic:
        variadic: null, // (default)
        // acts as boolean value, if exists true, otherwise false.
        
        variadic: false,
        // optional value (e.g. --name or --name=foo) if not specified default value is used.
        
        variadic: true,
        // is variadic expecting multiple values (e.g. --name=foo --name=bar).
        // if not specified default values are used.
     
        // not supported yet!
        suggestedValues: null,
    );

Abstract Command

Simply extend from the AbstractCommand::class to create more complex commands.

use Tobento\Service\Console\AbstractCommand;
use Tobento\Service\Console\InteractorInterface;

class SendEmails extends AbstractCommand
{
    /**
     * The command name.
     */
    public const NAME = 'email:send';
    
    /**
     * The command description.
     */
    public const DESC = 'Send an email to a user(s)';
    
    /**
     * The command usage text.
     */
    public const USAGE = 'Send emails ...';
    
    /**
     * Create a new instance.
     */
    public function __construct()
    {
        // you may add an argument(s):
        $this->argument(
            name: 'user',
            description: 'The Id(s) of the user',
            variadic: true,
        );
        
        // you may add an option(s):
        $this->option(
            name: 'queue',
            description: 'Whether the email should be queued',
        );
    }
    
    /**
     * Handle the command.
     *
     * @param InteractorInterface $io
     * @return int The exit status code: 
     *     0 SUCCESS
     *     1 FAILURE If some error happened during the execution
     *     2 INVALID To indicate incorrect command usage e.g. invalid options
     */
    public function handle(InteractorInterface $io, MailerInterface $mailer): int
    {
        // retrieve input arguments and options:
        $userIds = $io->argument('user');
        $queue = $io->option('queue');
        
        // send emails using the mailer...
        
        // you may write some output:
        $io->write(sprintf(
            'email(s) send to user ids %s queued [%s]',
            implode(',', $userIds),
            $queue ? 'true' : 'false',
        ));
        
        return 0;
        // or use the available constants:
        // return static::SUCCESS;
        // return static::FAILURE;
        // return static::INVALID;
    }
}

Check out Arguments and Options for more detail.

Using Signature

You may use the SIGNATURE as an alternative way to define the name, description, arguments and options of your command.

use Tobento\Service\Console\AbstractCommand;
use Tobento\Service\Console\InteractorInterface;

class SendEmails extends AbstractCommand
{
    /**
     * The signature of the console command.
     */
    public const SIGNATURE = '
        mail:send | Send an email to a user(s)
        {user : The Id(s) of the user}
        {--queue : Whether the email should be queued}
    ';
    
    /**
     * Handle the command.
     *
     * @param InteractorInterface $io
     * @return int The exit status code: 
     *     0 SUCCESS
     *     1 FAILURE If some error happened during the execution
     *     2 INVALID To indicate incorrect command usage e.g. invalid options
     */
    public function handle(InteractorInterface $io): int
    {
        return 0;
    }
}

Arguments

• {name} required, expecting single value
• {name?} optional, expecting single value
• {name[]} required and variadic, expecting multiple values
• {name[]?} optional and variadic, expecting multiple values
• {name=} optional with null as default value
• {name=foo} optional with foo as default value
• {name=[foo,bar]} optional and variadic with foo and bar as default values

Options

• {--name} acts as boolean value, if exists true, otherwise false
• {--n|name} with n as short name
• {--name=} with null as default value
• {--name=foo} with foo as default value
• {--name[]} variadic, expecting multiple values
• {--name=[foo,bar]} variadic with foo and bar as default values

Options are optional in general!

Interactor

The interactor let you interact with the input and output from the console while handling your command:

use Tobento\Service\Console\Command;
use Tobento\Service\Console\InteractorInterface;

$command = (new Command(name: 'mail:send'))
    // handle the command:
    ->handle(function(InteractorInterface $io): int {
        // ...
        // use the interactor $io to interact
        // ...
    });

Retrieving Argument and Option Values

Retrieve input argument(s) and option(s) if specified. See Arguments and Options.

// Argument(s):
$value = $io->argument(name: 'name');

// all values indexed by the argument name:
$values = $io->arguments();

// Option(s):
$value = $io->option(name: 'name');

// all values indexed by the option name:
$values = $io->options();

Argument details

// Argument with variadic: false
$value = $io->argument(name: 'name');
// NULL, if the argument was not passed when running the command
// Not NULL, if the argument was passed when running the command

// Argument with variadic: true
$value = $io->argument(name: 'name');
// Array empty if the argument was not passed when running the command

Option details

// Option with variadic: null
$value = $io->option(name: 'name');
// bool(false), if the option was not passed when running the command
// bool(true), if the option was passed when running the command

// Option with variadic: false
$value = $io->option(name: 'name');
// NULL, if the option was not passed when running the command
// Not NULL, if the option was passed when running the command

// Option with variadic: true
$value = $io->option(name: 'name');
// Array, empty if the option was not passed when running the command

Writing Output

$io->write('Some text');

$io->write('Some Text', 'newline');
$io->write('Some Text', newline: 1);

// Write a single blank line:
$io->newLine();

// Write three blank lines:
$io->newLine(num: 3);

// Write specific messages:
$io->info('An info message');
$io->comment('A comment message');
$io->warning('A warning message');
$io->error('An error message');
$io->success('A success message');

Writing formatted output

You may write formatted output by the following way:

$io->write('<comment>Some text</comment>');

$io->write('<fg=red>Some text</>');
$io->write('<bg=red>Some text</>');
$io->write('<fg=white;bg=red>Some text</>');

Writing tables

$io->table(
    headers: ['Name', 'Email'],
    rows: [
        ['Tom', 'tom@example.com'],
    ],
);

Asking Questions

$name = $io->ask('What is your name?');

// With validator:
$name = $io->ask('What is your name?', validator: function(string $answer): void {
    if ($answer !== 'something') {
        throw new \Exception('Your answer is incorrect');
    }
});

// With max attempts:
$name = $io->ask('What is your name?', attempts: 2);

Secret question

You may ask a secret question:

$password = $io->secret('What is the password?');

// With validator:
$name = $io->secret('What is your name?', validator: function(string $answer): void {
    if ($answer !== 'something') {
        throw new \Exception('Your answer is incorrect');
    }
});

// With max attempts:
$name = $io->secret('What is your name?', attempts: 2);

Confirmation question

You may ask for confirmation:

if ($io->confirm('Do you wish to continue?', default: true)) {
    // ...
}

Choice question

You may ask a choice question:

$color = $io->choice(
    question: 'What color do you wish to use?',
    choices: ['red', 'blue'],
    default: 'red',
    multiselect: true,
);

Progress Bar

$io->progressStart(max: 5);

foreach (range(0, 5) as $number) {
    sleep(1);
    $io->progressAdvance(step: 1);
}

$io->progressFinish();

Verbosity Levels

• quiet No message output
• normal Normal output
• v Low verbosity
• vv Medium verbosity
• vvv High verbosity

if ($io->isVerbose('vv')) {
    $io->write('Some Text');
}

// or:
$io->write('Some Text', 'v');
$io->write('Some Text', 'vv');
$io->write('Some Text', 'vvv');

Locking

Not supported yet.

Signals

Not supported yet.

Events

You may listen to the following events if you have defined a event listener in the console:

Event	Description
Tobento\Service\Console\Event\CommandStarting::class	The Event is fired before executing the console command.
Tobento\Service\Console\Event\CommandFinished::class	The Event is fired after executing the console command.

Testing

You may test commands using the TestCommand::class.

You may check out the Tobento\Service\Console\Test\TestCommandTest::class for examples.

use PHPUnit\Framework\TestCase;
use Tobento\Service\Console\Test\TestCommand;

class SampleCommandTest extends TestCase
{
    public function testCommand()
    {
        (new TestCommand(command: SampleCommand::class))
            // output expectations:
            ->expectsOutput('lorem')
            ->doesntExpectOutput('ipsum')
            ->expectsOutputToContain('lorem')
            ->doesntExpectOutputToContain('ipsum')
            ->expectsTable(
                headers: ['Name', 'Email'],
                rows: [
                    ['Tim', 'tom@example.com'],
                ],
            )
            
            // questions expectations:
            ->expectsQuestion('What is your name?', answer: 'Tom')
            ->expectsQuestion('What colors do you wish to use?', answer: ['red', 'yellow'])
            ->expectsQuestion('Do you wish to continue?', answer: true)
            
            // exit code expectation:
            ->expectsExitCode(0)
            
            // execute test:
            ->execute();
    }
}

Passing input arguments and options

use PHPUnit\Framework\TestCase;
use Tobento\Service\Console\Test\TestCommand;
use Tobento\Service\Console\CommandInterface;

class SampleCommandTest extends TestCase
{
    public function testCommand()
    {
        (new TestCommand(
            command: SampleCommand::class, // string|CommandInterface
            input: [
                // passing arguments:
                'username' => 'Tom',
                
                // with array value:
                'username' => ['Tom', 'Tim'],

                // passing options:
                '--some-option' => 'value',
                
                // with array value:
                '--some-option' => ['value'],
                
                // pass null for options with variadic: null
                '--some-option' => null,
                
            ],
        ))
        // set expectations:
        ->expectsOutput('lorem')
        ->expectsExitCode(0)

        // execute test:
        ->execute();
    }
}

Passing Container Or Console

use PHPUnit\Framework\TestCase;
use Tobento\Service\Console\Test\TestCommand;
use Tobento\Service\Console\ConsoleInterface;
use Psr\Container\ContainerInterface;

class SampleCommandTest extends TestCase
{
    public function testCommand()
    {
        (new TestCommand(command: SampleCommand::class))
            ->expectsExitCode(0)
            
            // if no dependencies
            ->execute() // null
            
            // passing the console to test on:
            ->execute($console) // ConsoleInterface
            
            // or just passing the container
            // (recommended way as console independent):
            ->execute($container); // ContainerInterface
    }
}

With input

You may use the withInput method returning a new TestCommand::class instance:

use PHPUnit\Framework\TestCase;
use Tobento\Service\Console\Test\TestCommand;

class SampleCommandTest extends TestCase
{
    private function command(): TestCommand
    {
        return new TestCommand(command: SampleCommand::class);
    }
    
    public function testCommand()
    {
        $this->command()
            ->withInput([
                'username' => 'Tom',            
            ])
            ->expectsExitCode(0)
            ->execute();
    }
}

Symfony

Symfony Console

use Tobento\Service\Console\Symfony;
use Tobento\Service\Console\ConsoleInterface;
use Psr\Container\ContainerInterface;
use Psr\EventDispatcher\EventDispatcherInterface;

$console = new Symfony\Console(
    name: 'app',
    container: $container, // ContainerInterface
    
    // you may define a event dispatcher:
    eventDispatcher: $eventDispatcher, // EventDispatcherInterface
);

var_dump($console instanceof ConsoleInterface);
// bool(true)

Symfony Custom Interactor

You may create a custom interactor using the interactorFactory parameter:

use Tobento\Service\Console\Symfony;
use Tobento\Service\Console\ConsoleInterface;
use Tobento\Service\Console\InteractorInterface;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Style\SymfonyStyle;
use Psr\Container\ContainerInterface;

$interactorFactory = function(
    Command $command,
    InputInterface $input,
    OutputInterface $output
): InteractorInterface {
    return new Symfony\Interactor(
        command: $command,
        input: $input,
        output: $output,
        style: null, // null|SymfonyStyle
    );
    
    // or create another Interactor fitting your needs
};

$console = new Symfony\Console(
    name: 'app',
    container: $container, // ContainerInterface
    interactorFactory: $interactorFactory,
);

var_dump($console instanceof ConsoleInterface);
// bool(true)

Credits

• Tobias Strub
• All Contributors
• Symfony Console