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<?php |
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namespace Nkey\DDG\API; |
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use Nkey\DDG\API\Model\Icon; |
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use Nkey\DDG\API\Model\QueryResult; |
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use Nkey\DDG\API\Model\Result; |
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use Webmozart\Json\JsonDecoder; |
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use ReflectionClass; |
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use ReflectionMethod; |
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/** |
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* This class provides means for parsing json from duckduckgo api into a local model |
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* |
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* @author Maik Greubel <[email protected]> |
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* @license Apache 2.0 |
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*/ |
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class QueryResultParser |
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{ |
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/** |
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* Parse a payload json string |
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* |
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* @param string $payload |
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* The payload to parse |
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* @return QueryResult |
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*/ |
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public function parseQueryResult(string $payload): QueryResult |
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{ |
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$decoder = new JsonDecoder(); |
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$json = $decoder->decode($payload); |
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$result = new QueryResult(); |
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$ref = new ReflectionClass($result); |
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$methods = $ref->getMethods(ReflectionMethod::IS_PUBLIC); |
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View Code Duplication |
foreach ($methods as $method) { |
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if (($propertyName = $this->getPropertyName($method))) { |
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if ($propertyName === 'Meta') { |
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$result = $this->parseMeta($result, $json->meta); |
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continue; |
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} |
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$this->assignPropertyValue($method, $result, $json, $propertyName); |
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} |
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} |
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$result = $this->parseResults($result, $json->RelatedTopics, false); |
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$result = $this->parseResults($result, $json->Results, true); |
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return $result; |
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} |
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private function assignPropertyValue(ReflectionMethod $method, $destObject, $object, $propertyName) { |
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if (property_exists($object, $propertyName)) { |
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$property = $object->$propertyName; |
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$method->invoke($destObject, $property); |
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} |
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} |
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private function getPropertyName(ReflectionMethod $method) { |
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$propertyName = false; |
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if (substr($method->name, 0, 3) === 'set') { |
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$propertyName = substr($method->name, 3); |
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} |
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return $propertyName; |
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} |
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private function parseResults(QueryResult $queryResult, $results, bool $isResult) |
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{ |
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foreach ($results as $result) { |
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$res = new Result(); |
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$ref = new ReflectionClass($res); |
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$methods = $ref->getMethods(ReflectionMethod::IS_PUBLIC); |
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View Code Duplication |
foreach ($methods as $method) { |
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if (($propertyName = $this->getPropertyName($method))) { |
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if ($propertyName === 'Icon') { |
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$res = $this->parseIcon($res, $result->Icon); |
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continue; |
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} |
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$this->assignPropertyValue($method, $res, $result, $propertyName); |
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} |
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} |
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if( $isResult ) { |
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$queryResult->addResult($res); |
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} |
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else { |
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$queryResult->addRelatedTopic($res); |
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} |
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} |
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return $queryResult; |
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} |
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private function parseIcon(Result $result, $icon): Result |
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{ |
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$ico = new Icon(); |
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$ref = new ReflectionClass($ico); |
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$methods = $ref->getMethods(ReflectionMethod::IS_PUBLIC); |
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foreach ($methods as $method) { |
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if (($propertyName = $this->getPropertyName($method))) { |
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if (property_exists($icon, $propertyName)) { |
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$property = $icon->$propertyName; |
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if ($propertyName === 'Height' || $propertyName === 'Width') { |
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$property = intval($property); |
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} |
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$method->invoke($ico, $property); |
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} |
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} |
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} |
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$result->setIcon($ico); |
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return $result; |
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} |
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private function parseMeta(QueryResult $result, $meta): QueryResult |
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{ |
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return $result; |
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} |
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} |
This check looks from parameters that have been defined for a function or method, but which are not used in the method body.