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<?php |
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/** |
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* @author Flipbox Factory |
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* @copyright Copyright (c) 2017, Flipbox Digital |
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* @link https://github.com/flipbox/transform/releases/latest |
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* @license https://github.com/flipbox/transform/blob/master/LICENSE |
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*/ |
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namespace Flipbox\Transform; |
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use Flipbox\Transform\Helpers\Object as ObjectHelper; |
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/** |
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* @author Flipbox Factory <[email protected]> |
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* @since 1.0.0 |
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*/ |
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class Transform |
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{ |
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/** |
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* The character used to separate modifier parameters. |
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* |
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* @var string |
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*/ |
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public $paramDelimiter = '|'; |
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/** |
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* Upper limit to how many levels of included data are allowed. |
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* |
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* @var int |
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*/ |
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public $recursionLimit = 10; |
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/** |
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* Scope identifiers that resources can optionally include. |
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* |
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* @var array |
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*/ |
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protected $includes = []; |
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/** |
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* Scope identifiers that resources must exclude. |
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* |
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* @var array |
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*/ |
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protected $excludes = []; |
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/** |
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* Scope identifiers that resources must return. |
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* |
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* @var array |
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*/ |
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protected $fields = []; |
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/** |
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* Array containing modifiers as keys and an array value of params. |
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* |
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* @var array |
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*/ |
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protected $params = []; |
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/** |
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* @param array $config |
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*/ |
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public function __construct(array $config = []) |
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{ |
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ObjectHelper::configure($this, $config); |
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} |
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/** |
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* @param string $include |
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* |
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* @return ParamBag |
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*/ |
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public function getParams($include): ParamBag |
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{ |
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$params = isset($this->params[$include]) ? $this->params[$include] : []; |
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return new ParamBag($params); |
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} |
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/******************************************* |
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* INCLUDES |
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*******************************************/ |
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/** |
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* Get Requested Includes. |
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* |
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* @return array |
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*/ |
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public function getIncludes(): array |
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{ |
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return $this->includes; |
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} |
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/** |
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* Parse Include String. |
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* |
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* @param array|string $includes Array or csv string of resources to include |
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* |
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* @return $this |
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*/ |
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public function setIncludes($includes) |
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{ |
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// Wipe these before we go again |
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$this->includes = $this->params = []; |
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if (is_string($includes)) { |
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$includes = explode(',', $includes); |
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} |
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if (!is_array($includes)) { |
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throw new \InvalidArgumentException( |
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'The parseIncludes() method expects a string or an array. ' . gettype($includes) . ' given' |
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); |
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} |
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foreach ($includes as $include) { |
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list($includeName, $allModifiersStr) = array_pad(explode(':', $include, 2), 2, null); |
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// Trim it down to a cool level of recursion |
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$includeName = $this->trimToAcceptableRecursionLevel($includeName); |
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if (in_array($includeName, $this->includes)) { |
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continue; |
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} |
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$this->includes[] = $includeName; |
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// No Params? Bored |
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if ($allModifiersStr === null) { |
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continue; |
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} |
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// Matches multiple instances of 'something(foo|bar|baz)' in the string |
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// I guess it ignores : so you could use anything, but probably don't do that |
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preg_match_all('/([\w]+)(\(([^\)]+)\))?/', $allModifiersStr, $allModifiersArr); |
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// [0] is full matched strings... |
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$modifierCount = count($allModifiersArr[0]); |
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$modifierArr = []; |
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for ($modifierIt = 0; $modifierIt < $modifierCount; $modifierIt++) { |
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// [1] is the modifier |
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$modifierName = $allModifiersArr[1][$modifierIt]; |
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// and [3] is delimited params |
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$modifierParamStr = $allModifiersArr[3][$modifierIt]; |
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// Make modifier array key with an array of params as the value |
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$modifierArr[$modifierName] = explode($this->paramDelimiter, $modifierParamStr); |
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} |
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$this->params[$includeName] = $modifierArr; |
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} |
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// This should be optional and public someday, but without it includes would never show up |
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$this->autoIncludeParents(); |
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return $this; |
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} |
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/******************************************* |
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* EXCLUDES |
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*******************************************/ |
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/** |
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* Get Requested Excludes. |
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* |
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* @return array |
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*/ |
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public function getExcludes(): array |
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{ |
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return $this->excludes; |
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} |
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/** |
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* Parse Exclude String. |
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* |
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* @param array|string $excludes Array or csv string of resources to exclude |
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* |
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* @return $this |
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*/ |
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public function setExcludes($excludes) |
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{ |
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$this->excludes = []; |
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if (is_string($excludes)) { |
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$excludes = explode(',', $excludes); |
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} |
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if (!is_array($excludes)) { |
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throw new \InvalidArgumentException( |
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'The parseExcludes() method expects a string or an array. ' . gettype($excludes) . ' given' |
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); |
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} |
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foreach ($excludes as $excludeName) { |
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$excludeName = $this->trimToAcceptableRecursionLevel($excludeName); |
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if (in_array($excludeName, $this->excludes)) { |
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continue; |
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} |
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$this->excludes[] = $excludeName; |
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} |
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return $this; |
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} |
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/******************************************* |
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* FIELDS |
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*******************************************/ |
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/** |
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* Parse field parameter. |
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* |
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* @param array $fields Array of fields to include. It must be an array |
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* whose keys are resource types and values a string |
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* of the fields to return, separated by a comma |
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* |
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* @return $this |
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*/ |
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public function setFields(array $fields) |
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{ |
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$this->fields = []; |
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foreach ($fields as $type => $field) { |
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//Remove empty and repeated fields |
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$this->fields[$type] = array_unique(array_filter(explode(',', $field))); |
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} |
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return $this; |
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} |
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/** |
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* Get requested fields. |
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* |
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* @return array |
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*/ |
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public function getFields(): array |
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{ |
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return $this->fields; |
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} |
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/** |
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* Get field params for the specified type. |
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* |
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* @param string $type |
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* |
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* @return ParamBag|null |
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*/ |
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public function getField($type) |
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{ |
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return !isset($this->fields[$type]) ? |
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null : |
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new ParamBag($this->fields[$type]); |
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} |
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/** |
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* Auto-include Parents |
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* |
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* Look at the requested includes and automatically include the parents if they |
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* are not explicitly requested. E.g: [foo, bar.baz] becomes [foo, bar, bar.baz] |
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* |
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* @internal |
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* |
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* @return void |
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*/ |
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protected function autoIncludeParents() |
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{ |
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$parsed = []; |
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foreach ($this->includes as $include) { |
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$nested = explode('.', $include); |
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$part = array_shift($nested); |
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$parsed[] = $part; |
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while (count($nested) > 0) { |
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$part .= '.' . array_shift($nested); |
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$parsed[] = $part; |
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} |
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} |
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$this->includes = array_values(array_unique($parsed)); |
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} |
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/** |
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* Trim to Acceptable Recursion Level |
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* |
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* @internal |
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* |
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* @param string $includeName |
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* |
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* @return string |
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*/ |
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protected function trimToAcceptableRecursionLevel($includeName) |
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{ |
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return implode('.', array_slice(explode('.', $includeName), 0, $this->recursionLimit)); |
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} |
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} |
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