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<?php |
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namespace TheCodingMachine\GraphQL\Controllers\Types; |
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use Exception; |
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use GraphQL\Error\InvariantViolation; |
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use GraphQL\Type\Definition\FieldDefinition; |
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use GraphQL\Type\Definition\ObjectType; |
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use TheCodingMachine\GraphQL\Controllers\Annotations\Type; |
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use TheCodingMachine\GraphQL\Controllers\Mappers\RecursiveTypeMapperInterface; |
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/** |
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* An object type built from the Type annotation |
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*/ |
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class MutableObjectType extends ObjectType |
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{ |
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// In pending state, we can still add fields. |
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public const STATUS_PENDING = 'pending'; |
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public const STATUS_FROZEN = 'frozen'; |
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/** |
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* @var string |
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*/ |
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private $status; |
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/** |
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* @var array<callable> |
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*/ |
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private $fieldsCallables = []; |
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/** |
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* @var FieldDefinition[]|null |
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*/ |
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private $finalFields; |
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public function __construct(array $config) |
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{ |
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$this->status = self::STATUS_PENDING; |
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parent::__construct($config); |
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} |
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public function freeze(): void |
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{ |
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$this->status = self::STATUS_FROZEN; |
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} |
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public function getStatus(): string |
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{ |
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return $this->status; |
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} |
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public function addFields(callable $fields): void |
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{ |
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if ($this->status !== self::STATUS_PENDING) { |
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throw new \RuntimeException('Tried to add fields to a frozen MutableObjectType.'); |
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} |
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$this->fieldsCallables[] = $fields; |
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} |
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/** |
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* @param string $name |
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* |
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* @return FieldDefinition |
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* |
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* @throws Exception |
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*/ |
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public function getField($name): FieldDefinition |
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{ |
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if ($this->status === self::STATUS_PENDING) { |
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throw new \RuntimeException('You must freeze() a MutableObjectType before fetching its fields.'); |
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} |
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return parent::getField($name); |
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} |
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/** |
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* @param string $name |
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* |
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* @return bool |
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*/ |
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public function hasField($name): bool |
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{ |
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if ($this->status === self::STATUS_PENDING) { |
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throw new \RuntimeException('You must freeze() a MutableObjectType before fetching its fields.'); |
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} |
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return parent::hasField($name); |
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} |
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/** |
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* @return FieldDefinition[] |
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* |
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* @throws InvariantViolation |
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*/ |
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public function getFields(): array |
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{ |
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if ($this->finalFields === null) { |
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if ($this->status === self::STATUS_PENDING) { |
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throw new \RuntimeException('You must freeze() a MutableObjectType before fetching its fields.'); |
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} |
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$this->finalFields = parent::getFields(); |
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foreach ($this->fieldsCallables as $fieldsCallable) { |
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$this->finalFields = FieldDefinition::defineFieldMap($this, $fieldsCallable()) + $this->finalFields; |
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} |
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} |
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return $this->finalFields; |
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} |
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} |
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