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<?php |
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namespace MathieuTu\JsonSyncer\Helpers; |
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use BadMethodCallException; |
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use Illuminate\Database\Eloquent\Model; |
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use Illuminate\Database\Eloquent\Relations\HasOneOrMany; |
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use Illuminate\Support\Str; |
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use MathieuTu\JsonSyncer\Contracts\JsonImportable; |
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use MathieuTu\JsonSyncer\Exceptions\JsonDecodingException; |
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use MathieuTu\JsonSyncer\Exceptions\UnknownAttributeException; |
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class JsonImporter |
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{ |
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private $importable; |
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public function __construct(JsonImportable $importable) |
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{ |
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$this->importable = $importable; |
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} |
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public static function importFromJson(JsonImportable $importable, $objects) |
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{ |
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(new static($importable))->import($objects); |
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} |
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public function import($objects) |
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{ |
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$objects = $this->convertObjectsToArray($objects); |
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foreach ($objects as $attributes) { |
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$object = $this->importAttributes($attributes); |
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$this->importRelations($object, $attributes); |
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} |
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} |
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protected function convertObjectsToArray($objects): array |
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{ |
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if (is_string($objects)) { |
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$objects = json_decode($objects, true); |
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} |
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if (json_last_error() !== JSON_ERROR_NONE) { |
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throw new JsonDecodingException('Invalid json format.'); |
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} |
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if ($objects instanceof \Illuminate\Contracts\Support\Arrayable) { |
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$objects = $objects->toArray(); |
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} |
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return $this->wrap((array) $objects); |
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} |
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protected function wrap(array $objects): array |
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{ |
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return empty($objects) || is_array(reset($objects)) ? $objects : [$objects]; |
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} |
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protected function importAttributes($attributes): JsonImportable |
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{ |
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$attributes = array_only($attributes, $this->importable->getJsonImportableAttributes()); |
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return $this->importable instanceof Model ? $this->importable->create($attributes) : $this->importable; |
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} |
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protected function importRelations($object, $attributes) |
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{ |
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$relationsNames = array_intersect(array_keys($attributes), $this->importable->getJsonImportableRelations()); |
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foreach ($relationsNames as $relationName) { |
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$children = $this->convertObjectsToArray($attributes[$relationName]); |
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$relation = $this->getRelationObject($object, $relationName); |
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$this->importChildrenIfImportable($relation, $children); |
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} |
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} |
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protected function importChildrenIfImportable(HasOneOrMany $relation, array $children) |
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{ |
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$childClass = $relation->getRelated(); |
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if ($childClass instanceof JsonImportable) { |
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$children = $this->addParentKeyToChildren($children, $relation); |
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$childClass->importFromJson($children); |
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} |
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} |
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protected function addParentKeyToChildren(array $children, HasOneOrMany $relation): array |
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{ |
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return array_map(function ($object) use ($relation) { |
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$object[$relation->getForeignKeyName()] = $relation->getParentKey(); |
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return $object; |
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}, $children); |
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} |
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protected function getRelationObject($object, $relationName): HasOneOrMany |
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{ |
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$relationName = Str::camel($relationName); |
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try { |
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$relation = $object->$relationName(); |
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if (!$relation instanceof HasOneOrMany) { |
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throw new BadMethodCallException(); |
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} |
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return $relation; |
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} catch (BadMethodCallException $e) { |
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$class = get_class($object); |
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throw new UnknownAttributeException("Unknown attribute or HasOneorMany relation '$relationName' in '$class'."); |
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} |
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} |
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} |
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mathieutu /
laravel-json-syncer
