SignpostMarv\DaftObject\AbstractDaftObject

Complexity

Total Complexity

41

Size/Duplication

Total Lines	374
Duplicated Lines	0 %

Test Coverage

Coverage

97.67%

Importance

Changes

0

18 Methods

Rating	Name	Duplication	Size	Complexity
B	DoGetSet()	0	52	5
A	DaftObjectProperties()	0	3	1
A	DaftObjectJsonPropertyNames()	0	13	3
A	ThrowIfNotDaftJson()	0	5	2
A	HasPublicMethod()	0	18	3
A	DaftObjectPublicGetters()	0	5	1
A	__debugInfo()	0	15	4
A	DaftObjectExportableProperties()	0	3	1
A	DaftObjectPublicSetters()	0	5	1
B	CheckTypeDefinesOwnIdProperties()	0	28	6
A	__set()	0	7	1
A	__unset()	0	3	1
B	CachePublicGettersAndSetters()	0	38	6
A	__get()	0	6	1
A	__construct()	0	5	1
A	DaftObjectNullableProperties()	0	3	1
A	DaftObjectJsonProperties()	0	5	1
A	DaftObjectMethodNameFromProperty()	0	5	2

<?php
/**
* Base daft objects.
*
* @author SignpostMarv
*/
declare(strict_types=1);

namespace SignpostMarv\DaftObject;

use BadMethodCallException;
use ReflectionClass;
use ReflectionMethod;
use Throwable;

/**
* Base daft object.
*/
abstract class AbstractDaftObject implements DaftObject
{
    /**
    * List of properties that can be defined on an implementation.
    *
    * @var string[]
    */
    const PROPERTIES = [];

    /**
    * List of nullable properties that can be defined on an implementation.
    *
    * @var string[]
    */
    const NULLABLE_PROPERTIES = [];

    /**
    * List of exportable properties that can be defined on an implementation.
    *
    * @var string[]
    */
    const EXPORTABLE_PROPERTIES = [];

    /**
    * import/export definition for DaftJson.
    */
    const JSON_PROPERTIES = [];

    /**
    * @var string[][]
    */
    private static $publicGetters = [];

    /**
    * @var string[][]
    */
    private static $publicSetters = [];

    /**
    * Does some sanity checking.
    *
    * @see DefinesOwnIdPropertiesInterface
    * @see self::CheckTypeDefinesOwnIdProperties()
    */
    public function __construct()
    {
        self::CheckTypeDefinesOwnIdProperties(
            static::class,
            ($this instanceof DefinesOwnIdPropertiesInterface)
        );
    }

    /**
    * {@inheritdoc}
    */
    public function __get(string $property)
    {
        return $this->DoGetSet(
            $property,
            false,
            NotPublicGetterPropertyException::class
        );
    }

    /**
    * {@inheritdoc}
    */
    public function __set(string $property, $v)
    {
        return $this->DoGetSet(
            $property,
            true,
            NotPublicSetterPropertyException::class,
            $v
        );
    }

    /**
    * {@inheritdoc}
    *
    * @see static::NudgePropertyValue()
    */
    public function __unset(string $property) : void
    {
        $this->NudgePropertyValue($property, null);
    }

    /**
    * {@inheritdoc}
    */
    public function __debugInfo() : array
    {
        $out = [];
        $publicGetters = static::DaftObjectPublicGetters();
        foreach (static::DaftObjectExportableProperties() as $prop) {
            $expectedMethod = 'Get' . ucfirst($prop);
            if (
                $this->__isset($prop) &&
                in_array($prop, $publicGetters, true)
            ) {
                $out[$prop] = $this->$expectedMethod();
            }
        }

        return $out;
    }

    /**
    * List of properties that can be defined on an implementation.
    *
    * @return string[]
    */
    final public static function DaftObjectProperties() : array
    {
        return static::PROPERTIES;
    }

    /**
    * {@inheritdoc}
    */
    final public static function DaftObjectNullableProperties() : array
    {
        return static::NULLABLE_PROPERTIES;
    }

    /**
    * {@inheritdoc}
    */
    final public static function DaftObjectExportableProperties() : array
    {
        return static::EXPORTABLE_PROPERTIES;
    }

    /**
    * {@inheritdoc}
    */
    final public static function DaftObjectPublicGetters() : array
    {
        static::CachePublicGettersAndSetters();

        return self::$publicGetters[static::class];
    }

    /**
    * {@inheritdoc}
    */
    final public static function DaftObjectPublicSetters() : array
    {
        static::CachePublicGettersAndSetters();

        return self::$publicSetters[static::class];
    }

    /**
    * {@inheritdoc}
    */
    final public static function DaftObjectJsonProperties() : array
    {
        static::ThrowIfNotDaftJson();

        return static::JSON_PROPERTIES;
    }

    /**
    * {@inheritdoc}
    */
    final public static function DaftObjectJsonPropertyNames() : array
    {
        $out = [];

        foreach (static::DaftObjectJsonProperties() as $k => $prop) {
            if (is_string($k)) {
                $prop = $k;
            }

            $out[] = $prop;
        }

        return $out;
    }

    protected static function ThrowIfNotDaftJson() : void
    {
        if (false === is_a(static::class, DaftJson::class, true)) {
            throw new DaftObjectNotDaftJsonBadMethodCallException(
                static::class
            );
        }
    }

    final protected static function HasPublicMethod(
        ReflectionClass $classReflection,
        string $method
    ) : bool {
        if (
            $classReflection->hasMethod($method)
        ) {
            $methodReflection = new ReflectionMethod(
                static::class,
                $method
            );

            return
                $methodReflection->isPublic() &&
                false === $methodReflection->isStatic();
        }

        return false;
    }

    final protected static function CachePublicGettersAndSetters() : void
    {
        if (false === isset(self::$publicGetters[static::class])) {
            self::$publicGetters[static::class] = [];
            self::$publicSetters[static::class] = [];

            if (
                is_a(
                    static::class,
                    DefinesOwnIdPropertiesInterface::class,
                    true
                )
            ) {
                self::$publicGetters[static::class][] = 'id';
            }

            $classReflection = new ReflectionClass(static::class);

            foreach (static::DaftObjectProperties() as $property) {
                if (
                    static::HasPublicMethod(
                        $classReflection,
                        static::DaftObjectMethodNameFromProperty($property)
                    )
                ) {
                    self::$publicGetters[static::class][] = $property;
                }

                if (
                    static::HasPublicMethod(
                        $classReflection,
                        static::DaftObjectMethodNameFromProperty(
                            $property,
                            true
                        )
                    )
                ) {
                    self::$publicSetters[static::class][] = $property;
                }
            }
        }
    }

    /**
    * Nudge the state of a given property, marking it as dirty.
    *
    * @param string $property property being nudged
    * @param mixed $value value to nudge property with
    *
    * @throws UndefinedPropertyException if $property is not in static::DaftObjectProperties()
    * @throws PropertyNotNullableException if $property is not in static::DaftObjectNullableProperties()
    * @throws PropertyNotRewriteableException if class is write-once read-many and $property was already changed
    */
    abstract protected function NudgePropertyValue(
        string $property,
        $value
    ) : void;

    /**
    * Checks if a type correctly defines it's own id.
    *
    * @throws ClassDoesNotImplementClassException if $class is not an implementation of DefinesOwnIdPropertiesInterface
    * @throws ClassMethodReturnHasZeroArrayCountException if $class::DaftObjectIdProperties() does not contain at least one property
    * @throws ClassMethodReturnIsNotArrayOfStringsException if $class::DaftObjectIdProperties() is not string[]
    * @throws UndefinedPropertyException if an id property is not in $class::DaftObjectIdProperties()
    */
    final protected static function CheckTypeDefinesOwnIdProperties(
        string $class,
        bool $throwIfNotImplementation = false
    ) : void {
        $interfaceCheck = $class;

        if (is_a($interfaceCheck, DefinesOwnIdPropertiesInterface::class, true)) {
            $properties = $class::DaftObjectIdProperties();

            if (count($properties) < 1) {
                throw new ClassMethodReturnHasZeroArrayCountException(
                    $class,
                    'DaftObjectIdProperties'
                );
            }

            foreach ($properties as $property) {
                if (false === is_string($property)) {
                    throw new ClassMethodReturnIsNotArrayOfStringsException(
                        $class,
                        'DaftObjectIdProperties'
                    );
                }
            }
        } elseif ($throwIfNotImplementation) {
            throw new ClassDoesNotImplementClassException(
                $class,
                DefinesOwnIdPropertiesInterface::class
            );
        }
    }

    protected static function DaftObjectMethodNameFromProperty(
        string $property,
        bool $SetNotGet = false
    ) : string {
        return ($SetNotGet ? 'Set' : 'Get') . ucfirst($property);
    }

    /**
    * @param mixed $v
    *
    * @return mixed
    *
    * @psalm-suppress InvalidThrow
    */
    protected function DoGetSet(
        string $property,
        bool $SetNotGet,
        string $notPublic,
        $v = null
    ) {
        $expectedMethod = static::DaftObjectMethodNameFromProperty(
            $property,
            $SetNotGet
        );
        $thingers = static::DaftObjectPublicGetters();

        if ($SetNotGet) {
            $thingers = static::DaftObjectPublicSetters();
        }

        if (
            false === (
                in_array(
                    $property,
                    $thingers,
                    true
                )
            )
        ) {
            if (
                false === in_array(
                    $property,
                    static::DaftObjectProperties(),
                    true
                )
            ) {
                throw new UndefinedPropertyException(static::class, $property);
            } elseif ( ! is_a($notPublic, Throwable::class, true)) {
                throw new BadMethodCallException(
                    'Argument 3 passed to ' .
                    __METHOD__ .
                    ' must be an implementation of ' .
                    Throwable::class .
                    ', "' .
                    $notPublic .
                    '" given.'
                );
            }

            throw new $notPublic(
                static::class,
                $property
            );
        }

        return $this->$expectedMethod($v);
    }
}