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<?php
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namespace Illuminate\Database\Eloquent\Casts;
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use BackedEnum;
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use Illuminate\Contracts\Database\Eloquent\Castable;
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use Illuminate\Contracts\Database\Eloquent\CastsAttributes;
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use Illuminate\Support\Collection;
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class AsEnumCollection implements Castable
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{
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/**
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* Get the caster class to use when casting from / to this cast target.
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*
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* @template TEnum of \UnitEnum|\BackedEnum
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*
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* @param array{class-string<TEnum>} $arguments
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* @return CastsAttributes<Collection<array-key, TEnum>, iterable<TEnum>>
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*/
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public static function castUsing(array $arguments)
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{
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return new class($arguments) implements CastsAttributes
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{
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protected $arguments;
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public function __construct(array $arguments)
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{
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$this->arguments = $arguments;
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}
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public function get($model, $key, $value, $attributes)
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{
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if (! isset($attributes[$key]) || is_null($attributes[$key])) {
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return;
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}
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$data = json_decode($attributes[$key], true);
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if (! is_array($data)) {
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return;
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}
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$enumClass = $this->arguments[0];
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return (new Collection($data))->map(function ($value) use ($enumClass) {
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return is_subclass_of($enumClass, BackedEnum::class)
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? $enumClass::from($value)
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: constant($enumClass.'::'.$value);
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});
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}
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public function set($model, $key, $value, $attributes)
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{
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$value = $value !== null
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? (new Collection($value))->map(function ($enum) {
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return $this->getStorableEnumValue($enum);
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})->toJson()
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: null;
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return [$key => $value];
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}
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public function serialize($model, string $key, $value, array $attributes)
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{
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return (new Collection($value))->map(function ($enum) {
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return $this->getStorableEnumValue($enum);
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})->toArray();
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}
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protected function getStorableEnumValue($enum)
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{
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if (is_string($enum) || is_int($enum)) {
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return $enum;
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}
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return $enum instanceof BackedEnum ? $enum->value : $enum->name;
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}
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};
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}
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}
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