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<?php namespace Botble\Base\Supports; use BadMethodCallException; use Botble\Base\Facades\BaseHelper; use Illuminate\Contracts\Database\Eloquent\CastsAttributes; use Illuminate\Support\Facades\Lang; use Illuminate\Support\Facades\Log; use Illuminate\Support\HtmlString; use JsonSerializable; use ReflectionClass; use ReflectionException; abstract class Enum implements CastsAttributes, JsonSerializable { protected static array $cache = []; protected static $langPath = 'core/base::enums'; protected mixed $value = null; public function make($value): static { if ($value instanceof static) { $this->value = $value->getValue(); return $this; } if ($value !== null && ! $this->isValid($value)) { Log::error(sprintf('Value %s is not part of the enum %s', json_encode($value), get_called_class())); } else { $this->value = $value; } return $this; } public function getValue() { return $this->value; } /** * Check if is valid enum value / public static function isValid($value): bool { return in_array($value, static::toArray(), true); } public static function toArray(bool $includeDefault = false): array { $class = get_called_class(); if (! isset(static::$cache[$class])) { try { $reflection = new ReflectionClass($class); static::$cache[$class] = $reflection->getConstants(); } catch (ReflectionException $exception) { BaseHelper::logError($exception); } } $result = static::$cache[$class]; if (isset($result['__default']) && ! $includeDefault) { unset($result['__default']); } return apply_filters(BASE_FILTER_ENUM_ARRAY, $result, get_called_class()); } /* * Returns the names (keys) of all constants in the Enum class / public static function keys(): array { return array_keys(static::toArray()); } /* * Returns instances of the Enum class of all Enum constants * * @return static[] Constant name in key, Enum instance in value / public static function values(): array { $values = []; foreach (static::toArray() as $key => $value) { $values[$key] = (new static())->make($value); } return $values; } /* * Returns a value when called statically like so: MyEnum::SOME_VALUE() given SOME_VALUE is a class constant * * @param string $name * @param array $arguments * * @return static * @throws BadMethodCallException / public static function __callStatic(string $name, array $arguments) { $array = static::toArray(); if (isset($array[$name]) \|\| array_key_exists($name, $array)) { return (new static())->make($array[$name]); } throw new BadMethodCallException('No static method or enum constant ' . $name . ' in class ' . get_called_class()); } public static function labels(): array { $result = []; foreach (static::toArray() as $value) { $result[$value] = static::getLabel($value); } return $result; } public static function getLabel(string\|null $value): string\|null { $key = sprintf( '%s.%s', static::$langPath, $value ); $label = Lang::has($key) ? trans($key) : $value; return apply_filters(BASE_FILTER_ENUM_LABEL, $label, get_called_class()); } /* * Returns the enum key (i.e. the constant name). * * @return false\|int\|string / public function getKey(): bool\|int\|string { return static::search($this->value); } /* * Return key for value * * @param string\|int $value * * @return false\|int\|string / public static function search($value): bool\|int\|string { return array_search($value, static::toArray(), true); } public function __toString() { return (string)$this->value; } /* * Compares one Enum with another. * * @param Enum\|null $enum * @return bool True if Enums are equal, false if not equal / final public function equals(Enum $enum = null): bool { return $enum !== null && $this->getValue() === $enum->getValue() && get_called_class() === get_class($enum); } /* * Specify data which should be serialized to JSON. This method returns data that can be serialized by json_encode() * natively. * * @return mixed * @link http://php.net/manual/en/jsonserializable.jsonserialize.php */ public function jsonSerialize(): array { return [ 'value' => $this->getValue(), 'label' => $this->label(), ]; } public function label(): string\|null { return self::getLabel($this->getValue()); } public function toHtml() { return new HtmlString(apply_filters(BASE_FILTER_ENUM_HTML, $this->value, get_called_class())); } public function get($model, string $key, $value, array $attributes): self { return $this->asEnum($value); } public function set($model, string $key, $value, array $attributes): self { return $this->asEnum($value); } protected function asEnum($value): Enum { if ($value instanceof Enum) { return $value; } return (new static())->make($value); } }

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