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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Celema\Console; |
| 6 | |
| 7 | use Attribute; |
| 8 | use ReflectionClass; |
| 9 | use ValueError; |
| 10 | |
| 11 | /** |
| 12 | * Declares a class as a console command. |
| 13 | * |
| 14 | * The name may carry a group prefix separated by a single colon, e.g. |
| 15 | * `db:migrate`; further colons are rejected. |
| 16 | * The prefix namespaces the command on the command line and groups it in the |
| 17 | * help overview under the capitalized prefix; `group` overrides that |
| 18 | * displayed title. |
| 19 | * |
| 20 | * @api |
| 21 | */ |
| 22 | #[Attribute(Attribute::TARGET_CLASS)] |
| 23 | final class Command |
| 24 | { |
| 25 | public readonly string $name; |
| 26 | public readonly string $prefix; |
| 27 | |
| 28 | public function __construct( |
| 29 | string $name, |
| 30 | public readonly string $description = '', |
| 31 | public readonly string $group = '', |
| 32 | ) { |
| 33 | $lower = strtolower($name); |
| 34 | $prefix = ''; |
| 35 | $bare = $lower; |
| 36 | |
| 37 | if (str_contains($lower, ':')) { |
| 38 | /** @var array{0: string, 1: string} $parts */ |
| 39 | $parts = explode(':', $lower, limit: 2); |
| 40 | [$prefix, $bare] = $parts; |
| 41 | |
| 42 | // A single colon only: a second one would collide with the |
| 43 | // prefixed lookup of another command. |
| 44 | if ($prefix === '' || str_contains($bare, ':')) { |
| 45 | throw new ValueError("Invalid command name '{$name}'"); |
| 46 | } |
| 47 | } |
| 48 | |
| 49 | if ($bare === '') { |
| 50 | throw new ValueError("Invalid command name '{$name}'"); |
| 51 | } |
| 52 | |
| 53 | $this->prefix = $prefix; |
| 54 | $this->name = $bare; |
| 55 | } |
| 56 | |
| 57 | public function full(): string |
| 58 | { |
| 59 | return $this->prefix === '' ? $this->name : "{$this->prefix}:{$this->name}"; |
| 60 | } |
| 61 | |
| 62 | public function title(): string |
| 63 | { |
| 64 | if ($this->group !== '') { |
| 65 | return $this->group; |
| 66 | } |
| 67 | |
| 68 | return $this->prefix === '' ? 'General' : ucfirst($this->prefix); |
| 69 | } |
| 70 | |
| 71 | /** |
| 72 | * Reads the attribute off a command instance or class. |
| 73 | * |
| 74 | * @param class-string|object $command |
| 75 | */ |
| 76 | public static function of(object|string $command): self |
| 77 | { |
| 78 | $class = is_object($command) ? $command::class : $command; |
| 79 | $attributes = new ReflectionClass($class)->getAttributes(self::class); |
| 80 | |
| 81 | if ($attributes === []) { |
| 82 | throw new ValueError("Command class '{$class}' has no #[Command] attribute"); |
| 83 | } |
| 84 | |
| 85 | return $attributes[0]->newInstance(); |
| 86 | } |
| 87 | } |