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<?php |
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namespace Napp\Core\Api\Transformers; |
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use Illuminate\Contracts\Support\Arrayable; |
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use Illuminate\Database\Eloquent\Model; |
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use Illuminate\Pagination\LengthAwarePaginator; |
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use Illuminate\Pagination\Paginator; |
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use Illuminate\Support\Collection; |
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class ApiTransformer implements TransformerInterface |
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{ |
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/** |
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* @var array |
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*/ |
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protected $apiMapping = []; |
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/** |
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* Strict mode removes keys that are |
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* not specified in api mapping array. |
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* |
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* @var bool |
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*/ |
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protected $strict = false; |
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/** |
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* @param array|Model $apiMapping |
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* @return void |
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*/ |
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public function setApiMapping($apiMapping) |
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{ |
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$this->apiMapping = []; |
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if (true === $apiMapping instanceof Model && true === property_exists($apiMapping, 'apiMapping')) { |
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$this->apiMapping = $apiMapping->apiMapping; |
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} elseif (true === \is_array($apiMapping)) { |
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$this->apiMapping = $apiMapping; |
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} |
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} |
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/** |
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* @param array|Arrayable $data |
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* @return array |
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*/ |
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public function transformInput($data): array |
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{ |
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$input = []; |
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$data = (true === \is_array($data)) ? $data : $data->toArray(); |
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foreach ($data as $key => $value) { |
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$input[$this->findOriginalKey($key)] = $value; |
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} |
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return $input; |
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} |
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/** |
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* @param array|Arrayable $data |
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* @return array |
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*/ |
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public function transformOutput($data): array |
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{ |
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$output = []; |
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if (true === $data instanceof LengthAwarePaginator || true === $data instanceof Paginator) { |
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return $this->transformPaginatedOutput($data); |
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} |
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if (true === $data instanceof Collection) { |
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foreach ($data as $item) { |
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$output[] = $this->transformOutput($item); |
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} |
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} else { |
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$data = (true === \is_array($data)) ? $data : $data->toArray(); |
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foreach ($data as $key => $value) { |
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if (true === $this->strict && false === array_key_exists($key, $this->apiMapping)) { |
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continue; |
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} |
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$output[$this->findNewKey($key)] = $this->convertValueType($key, $value); |
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} |
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} |
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return $output; |
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} |
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protected function transformPaginatedOutput($data): array |
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{ |
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$result = $data->toArray(); |
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$result['data'] = $this->transformOutput($data->getCollection()); |
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return $result; |
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} |
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/** |
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* @param string $newKey |
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* @return string |
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*/ |
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protected function findOriginalKey(string $newKey) |
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{ |
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foreach ($this->apiMapping as $key => $value) { |
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if (true === \in_array($newKey, $value)) { |
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return $key; |
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} |
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} |
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return $newKey; |
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} |
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/** |
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* @param string $originalKey |
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* @return string |
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*/ |
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protected function findNewKey(string $originalKey): string |
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{ |
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if (true === array_key_exists($originalKey, $this->apiMapping)) { |
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return $this->apiMapping[$originalKey]['newName']; |
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} |
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return $originalKey; |
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} |
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/** |
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* @param string $key |
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* @param mixed $value |
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* @return mixed |
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*/ |
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protected function convertValueType(string $key, $value) |
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{ |
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$type = (true === array_key_exists($key, $this->apiMapping)) |
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? $this->apiMapping[$key]['dataType'] |
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: 'string'; |
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switch ($type) { |
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case 'datetime': |
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return strtotime($value) > 0 ? date("c", strtotime($value)) : ''; |
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case 'int': |
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return (int) $value; |
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case 'bool': |
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return (bool) $value; |
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case 'array': |
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return (array) $value; |
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case 'json': |
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return json_decode($value); |
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default: |
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return $value; |
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} |
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} |
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} |
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