Swis\JsonApi\Client\Concerns\HasAttributes

Complexity

Total Complexity

77

Size/Duplication

Total Lines	614
Duplicated Lines	0 %

Importance

Changes	1
Bugs	0	Features	0

33 Methods

Rating	Name	Duplication	Size	Complexity
A	cacheMutatedAttributes()	0	12	3
A	hasGetMutator()	0	3	1
A	mutateAttribute()	0	3	1
A	hasCast()	0	7	3
A	getAttributes()	0	3	1
A	getAttributeFromArray()	0	3	1
A	getCasts()	0	3	1
A	getMutatorMethods()	0	5	1
A	addMutatedAttributesToArray()	0	19	3
A	mergeCasts()	0	5	1
A	only()	0	9	3
A	attributesToArray()	0	23	2
A	getAttributeValue()	0	3	1
A	hasSetMutator()	0	3	1
A	setMutatedAttributeValue()	0	3	1
A	getAttribute()	0	23	6
A	getArrayableAppends()	0	8	2
A	addCastAttributesToArray()	0	21	5
A	getMutatedAttributes()	0	9	2
A	mergeAppends()	0	5	1
A	asJson()	0	3	1
A	getArrayableItems()	0	11	3
A	setAppends()	0	5	1
A	isJsonCastable()	0	3	1
A	mutateAttributeForArray()	0	5	2
A	fromJson()	0	3	1
A	getArrayableAttributes()	0	3	1
A	setAttribute()	0	16	4
A	transformModelValue()	0	17	3
A	fromFloat()	0	11	4
C	castAttribute()	0	29	14
A	hasAppended()	0	3	1
A	getCastType()	0	3	1

<?php

namespace Swis\JsonApi\Client\Concerns;

use Illuminate\Contracts\Support\Arrayable;
use Swis\JsonApi\Client\Collection;
use Swis\JsonApi\Client\Util;

trait HasAttributes
{
    /**
     * The model's attributes.
     *
     * @var array
     */
    protected $attributes = [];

    /**
     * The attributes that should be cast.
     *
     * @var array
     */
    protected $casts = [];

    /**
     * The accessors to append to the model's array form.
     *
     * @var array
     */
    protected $appends = [];

    /**
     * Indicates whether attributes are snake cased on arrays.
     *
     * @var bool
     */
    public static $snakeAttributes = true;

    /**
     * The cache of the mutated attributes for each class.
     *
     * @var array
     */
    protected static $mutatorCache = [];

    /**
     * Convert the model's attributes to an array.
     *
     * @return array
     */
    public function attributesToArray()
    {
        $attributes = $this->getArrayableAttributes();

        $attributes = $this->addMutatedAttributesToArray(
            $attributes, $mutatedAttributes = $this->getMutatedAttributes()
        );

        // Next we will handle any casts that have been setup for this model and cast
        // the values to their appropriate type. If the attribute has a mutator we
        // will not perform the cast on those attributes to avoid any confusion.
        $attributes = $this->addCastAttributesToArray(
            $attributes, $mutatedAttributes
        );

        // Here we will grab all of the appended, calculated attributes to this model
        // as these attributes are not really in the attributes array, but are run
        // when we need to array or JSON the model for convenience to the coder.
        foreach ($this->getArrayableAppends() as $key) {
            $attributes[$key] = $this->mutateAttributeForArray($key, null);
        }

        return $attributes;
    }

    /**
     * Add the mutated attributes to the attributes array.
     *
     * @param array $attributes
     * @param array $mutatedAttributes
     *
     * @return array
     */
    protected function addMutatedAttributesToArray(array $attributes, array $mutatedAttributes)
    {
        foreach ($mutatedAttributes as $key) {
            // We want to spin through all the mutated attributes for this model and call
            // the mutator for the attribute. We cache off every mutated attributes so
            // we don't have to constantly check on attributes that actually change.
            if (!array_key_exists($key, $attributes)) {
                continue;
            }

            // Next, we will call the mutator for this attribute so that we can get these
            // mutated attribute's actual values. After we finish mutating each of the
            // attributes we will return this final array of the mutated attributes.
            $attributes[$key] = $this->mutateAttributeForArray(
                $key, $attributes[$key]
            );
        }

        return $attributes;
    }

    /**
     * Add the casted attributes to the attributes array.
     *
     * @param array $attributes
     * @param array $mutatedAttributes
     *
     * @return array
     */
    protected function addCastAttributesToArray(array $attributes, array $mutatedAttributes)
    {
        foreach ($this->getCasts() as $key => $value) {
            if (!array_key_exists($key, $attributes) ||
                in_array($key, $mutatedAttributes)) {
                continue;
            }

            // Next we will handle any casts that have been setup for this model and cast
            // the values to their appropriate type. If the attribute has a mutator we
            // will not perform the cast on those attributes to avoid any confusion.
            $attributes[$key] = $this->castAttribute(
                $key, $attributes[$key]
            );

            if ($attributes[$key] instanceof Arrayable) {
                $attributes[$key] = $attributes[$key]->toArray();
            }
        }

        return $attributes;
    }

    /**
     * Get an attribute array of all arrayable attributes.
     *
     * @return array
     */
    protected function getArrayableAttributes()
    {
        return $this->getArrayableItems($this->getAttributes());
    }

    /**
     * Get all of the appendable values that are arrayable.
     *
     * @return array
     */
    protected function getArrayableAppends()
    {
        if (!count($this->appends)) {
            return [];
        }

        return $this->getArrayableItems(
            array_combine($this->appends, $this->appends)
        );
    }

    /**
     * Get an attribute array of all arrayable values.
     *
     * @param array $values
     *
     * @return array
     */
    protected function getArrayableItems(array $values)
    {
        if (count($this->getVisible()) > 0) {

It seems like getVisible() must be provided by classes using this trait. How about adding it as abstract method to this trait?

            $values = array_intersect_key($values, array_flip($this->getVisible()));
        }

        if (count($this->getHidden()) > 0) {

It seems like getHidden() must be provided by classes using this trait. How about adding it as abstract method to this trait?

            $values = array_diff_key($values, array_flip($this->getHidden()));
        }

        return $values;
    }

    /**
     * Get an attribute from the model.
     *
     * @param string $key
     *
     * @return mixed
     */
    public function getAttribute($key)
    {
        if (!$key) {
            return;
        }

        // If the attribute exists in the attribute array or has a "get" mutator we will
        // get the attribute's value. Otherwise, we will proceed as if the developers
        // are asking for a relationship's value. This covers both types of values.
        if (array_key_exists($key, $this->attributes) ||
            array_key_exists($key, $this->casts) ||
            $this->hasGetMutator($key)) {
            return $this->getAttributeValue($key);
        }

        // Here we will determine if the model base class itself contains this given key
        // since we don't want to treat any of those methods as relationships because
        // they are all intended as helper methods and none of these are relations.
        if (method_exists(self::class, $key)) {
            return;
        }

        return $this->getRelationValue($key);

It seems like getRelationValue() must be provided by classes using this trait. How about adding it as abstract method to this trait?

    }

    /**
     * Get a plain attribute (not a relationship).
     *
     * @param string $key
     *
     * @return mixed
     */
    public function getAttributeValue($key)
    {
        return $this->transformModelValue($key, $this->getAttributeFromArray($key));
    }

    /**
     * Get an attribute from the $attributes array.
     *
     * @param string $key
     *
     * @return mixed
     */
    protected function getAttributeFromArray(string $key)
    {
        return $this->getAttributes()[$key] ?? null;
    }

    /**
     * Determine if a get mutator exists for an attribute.
     *
     * @param string $key
     *
     * @return bool
     */
    public function hasGetMutator($key)
    {
        return method_exists($this, 'get'.Util::stringStudly($key).'Attribute');
    }

    /**
     * Get the value of an attribute using its mutator.
     *
     * @param string $key
     * @param mixed  $value
     *
     * @return mixed
     */
    protected function mutateAttribute($key, $value)
    {
        return $this->{'get'.Util::stringStudly($key).'Attribute'}($value);
    }

    /**
     * Get the value of an attribute using its mutator for array conversion.
     *
     * @param string $key
     * @param mixed  $value
     *
     * @return mixed
     */
    protected function mutateAttributeForArray($key, $value)
    {
        $value = $this->mutateAttribute($key, $value);

        return $value instanceof Arrayable ? $value->toArray() : $value;
    }

    /**
     * Merge new casts with existing casts on the model.
     *
     * @param array $casts
     *
     * @return $this
     */
    public function mergeCasts(array $casts)
    {
        $this->casts = array_merge($this->casts, $casts);

        return $this;
    }

    /**
     * Cast an attribute to a native PHP type.
     *
     * @param string $key
     * @param mixed  $value
     *
     * @return mixed
     */
    protected function castAttribute($key, $value)
    {
        if (is_null($value)) {
            return $value;
        }

        switch ($this->getCastType($key)) {
            case 'int':
            case 'integer':
                return (int) $value;
            case 'real':
            case 'float':
            case 'double':
                return $this->fromFloat($value);
            case 'string':
                return (string) $value;
            case 'bool':
            case 'boolean':
                return (bool) $value;
            case 'object':
                return $this->fromJson($value, true);
            case 'array':
            case 'json':
                return $this->fromJson($value);
            case 'collection':
                return new Collection($this->fromJson($value));
        }

        return $value;
    }

    /**
     * Get the type of cast for a model attribute.
     *
     * @param string $key
     *
     * @return string
     */
    protected function getCastType($key)
    {
        return trim(strtolower($this->getCasts()[$key]));
    }

    /**
     * Set a given attribute on the model.
     *
     * @param string $key
     * @param mixed  $value
     *
     * @return mixed
     */
    public function setAttribute($key, $value)
    {
        // First we will check for the presence of a mutator for the set operation
        // which simply lets the developers tweak the attribute as it is set on
        // the model, such as "json_encoding" an listing of data for storage.
        if ($this->hasSetMutator($key)) {
            return $this->setMutatedAttributeValue($key, $value);
        }

        if (!is_null($value) && $this->isJsonCastable($key)) {
            $value = $this->asJson($value);
        }

        $this->attributes[$key] = $value;

        return $this;
    }

    /**
     * Determine if a set mutator exists for an attribute.
     *
     * @param string $key
     *
     * @return bool
     */
    public function hasSetMutator($key)
    {
        return method_exists($this, 'set'.Util::stringStudly($key).'Attribute');
    }

    /**
     * Set the value of an attribute using its mutator.
     *
     * @param string $key
     * @param mixed  $value
     *
     * @return mixed
     */
    protected function setMutatedAttributeValue($key, $value)
    {
        return $this->{'set'.Util::stringStudly($key).'Attribute'}($value);
    }

    /**
     * Encode the given value as JSON.
     *
     * @param mixed $value
     *
     * @return string
     */
    protected function asJson($value)
    {
        return json_encode($value);
    }

    /**
     * Decode the given JSON back into an array or object.
     *
     * @param string $value
     * @param bool   $asObject
     *
     * @return mixed
     */
    public function fromJson(string $value, $asObject = false)
    {
        return json_decode($value, !$asObject);
    }

    /**
     * Decode the given float.
     *
     * @param mixed $value
     *
     * @return mixed
     */
    public function fromFloat($value)
    {
        switch ((string) $value) {
            case 'Infinity':
                return INF;
            case '-Infinity':
                return -INF;
            case 'NaN':
                return NAN;
            default:
                return (float) $value;
        }
    }

    /**
     * Determine whether an attribute should be cast to a native type.
     *
     * @param string            $key
     * @param array|string|null $types
     *
     * @return bool
     */
    public function hasCast($key, $types = null)
    {
        if (array_key_exists($key, $this->getCasts())) {
            return $types ? in_array($this->getCastType($key), (array) $types, true) : true;
        }

        return false;
    }

    /**
     * Get the casts array.
     *
     * @return array
     */
    public function getCasts()
    {
        return $this->casts;
    }

    /**
     * Determine whether a value is JSON castable for inbound manipulation.
     *
     * @param string $key
     *
     * @return bool
     */
    protected function isJsonCastable($key)
    {
        return $this->hasCast($key, ['array', 'json', 'object', 'collection']);
    }

    /**
     * Get all of the current attributes on the model.
     *
     * @return array
     */
    public function getAttributes()
    {
        return $this->attributes;
    }

    /**
     * Get a subset of the model's attributes.
     *
     * @param array|mixed $attributes
     *
     * @return array
     */
    public function only($attributes)
    {
        $results = [];

        foreach (is_array($attributes) ? $attributes : func_get_args() as $attribute) {
            $results[$attribute] = $this->getAttribute($attribute);
        }

        return $results;
    }

    /**
     * Transform a raw model value using mutators, casts, etc.
     *
     * @param string $key
     * @param mixed  $value
     *
     * @return mixed
     */
    protected function transformModelValue($key, $value)
    {
        // If the attribute has a get mutator, we will call that then return what
        // it returns as the value, which is useful for transforming values on
        // retrieval from the model to a form that is more useful for usage.
        if ($this->hasGetMutator($key)) {
            return $this->mutateAttribute($key, $value);
        }

        // If the attribute exists within the cast array, we will convert it to
        // an appropriate native PHP type dependent upon the associated value
        // given with the key in the pair. Dayle made this comment line up.
        if ($this->hasCast($key)) {
            return $this->castAttribute($key, $value);
        }

        return $value;
    }

    /**
     * Set the accessors to append to model arrays.
     *
     * @param array $appends
     *
     * @return $this
     */
    public function setAppends(array $appends)
    {
        $this->appends = $appends;

        return $this;
    }

    /**
     * Add the accessors to append to model arrays.
     *
     * @param array $attributes
     *
     * @return $this
     */
    public function mergeAppends($attributes)
    {
        $this->appends = array_merge($this->appends, $attributes);

        return $this;
    }

    /**
     * Return whether the accessor attribute has been appended.
     *
     * @param string $attribute
     *
     * @return bool
     */
    public function hasAppended($attribute)
    {
        return in_array($attribute, $this->appends);
    }

    /**
     * Get the mutated attributes for a given instance.
     *
     * @return array
     */
    public function getMutatedAttributes()
    {
        $class = static::class;

        if (!isset(static::$mutatorCache[$class])) {
            static::cacheMutatedAttributes($class);
        }

        return static::$mutatorCache[$class];
    }

    /**
     * Extract and cache all the mutated attributes of a class.
     *
     * @param string $class
     *
     * @return void
     */
    public static function cacheMutatedAttributes($class)
    {
        $mutatedAttributes = [];

        // Here we will extract all of the mutated attributes so that we can quickly
        // spin through them after we export models to their array form, which we
        // need to be fast. This'll let us know the attributes that can mutate.
        foreach (static::getMutatorMethods($class) as $match) {
            $mutatedAttributes[] = lcfirst(static::$snakeAttributes ? Util::stringSnake($match) : $match);
        }

        static::$mutatorCache[$class] = $mutatedAttributes;
    }

    /**
     * Get all of the attribute mutator methods.
     *
     * @param mixed $class
     *
     * @return array
     */
    protected static function getMutatorMethods($class)
    {
        preg_match_all('/(?<=^|;)get([^;]+?)Attribute(;|$)/', implode(';', get_class_methods($class)), $matches);

        return $matches[1];
    }
}