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<?php |
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/** |
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* Copyright 2016 Facebook, Inc. |
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* |
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* You are hereby granted a non-exclusive, worldwide, royalty-free license to |
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* use, copy, modify, and distribute this software in source code or binary |
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* form for use in connection with the web services and APIs provided by |
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* Facebook. |
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* |
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* As with any software that integrates with the Facebook platform, your use |
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* of this software is subject to the Facebook Developer Principles and |
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* Policies [http://developers.facebook.com/policy/]. This copyright notice |
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* shall be included in all copies or substantial portions of the software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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* DEALINGS IN THE SOFTWARE. |
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* |
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*/ |
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namespace Facebook\GraphNodes; |
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/** |
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* Class GraphNode |
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* |
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* @package Facebook |
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*/ |
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class GraphNode extends Collection |
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{ |
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/** |
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* @var array Maps object key names to Graph object types. |
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*/ |
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protected static $graphObjectMap = []; |
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/** |
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* Init this Graph object. |
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* |
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* @param array $data |
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*/ |
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public function __construct(array $data = []) |
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{ |
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parent::__construct($this->castItems($data)); |
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} |
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/** |
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* Iterates over an array and detects the types each node |
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* should be cast to and returns all the items as an array. |
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* |
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* @TODO Add auto-casting to AccessToken entities. |
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* |
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* @param array $data The array to iterate over. |
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* |
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* @return array |
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*/ |
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public function castItems(array $data) |
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{ |
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$items = []; |
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foreach ($data as $k => $v) { |
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if ($this->shouldCastAsDateTime($k) |
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&& (is_numeric($v) |
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|| $this->isIso8601DateString($v)) |
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) { |
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$items[$k] = $this->castToDateTime($v); |
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} elseif ($k === 'birthday') { |
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$items[$k] = $this->castToBirthday($v); |
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} else { |
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$items[$k] = $v; |
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} |
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} |
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return $items; |
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} |
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/** |
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* Uncasts any auto-casted datatypes. |
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* Basically the reverse of castItems(). |
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* |
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* @return array |
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*/ |
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public function uncastItems() |
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{ |
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$items = $this->asArray(); |
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return array_map(function ($v) { |
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if ($v instanceof \DateTime) { |
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return $v->format(\DateTime::ISO8601); |
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} |
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return $v; |
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}, $items); |
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} |
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/** |
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* Get the collection of items as JSON. |
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* |
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* @param int $options |
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* |
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* @return string |
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*/ |
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public function asJson($options = 0) |
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{ |
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return json_encode($this->uncastItems(), $options); |
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} |
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/** |
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* Detects an ISO 8601 formatted string. |
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* |
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* @param string $string |
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* |
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* @return boolean |
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* |
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* @see https://developers.facebook.com/docs/graph-api/using-graph-api/#readmodifiers |
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* @see http://www.cl.cam.ac.uk/~mgk25/iso-time.html |
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* @see http://en.wikipedia.org/wiki/ISO_8601 |
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*/ |
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public function isIso8601DateString($string) |
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{ |
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// This insane regex was yoinked from here: |
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// http://www.pelagodesign.com/blog/2009/05/20/iso-8601-date-validation-that-doesnt-suck/ |
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// ...and I'm all like: |
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// http://thecodinglove.com/post/95378251969/when-code-works-and-i-dont-know-why |
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$crazyInsaneRegexThatSomehowDetectsIso8601 = '/^([\+-]?\d{4}(?!\d{2}\b))' |
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. '((-?)((0[1-9]|1[0-2])(\3([12]\d|0[1-9]|3[01]))?' |
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. '|W([0-4]\d|5[0-2])(-?[1-7])?|(00[1-9]|0[1-9]\d' |
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. '|[12]\d{2}|3([0-5]\d|6[1-6])))([T\s]((([01]\d|2[0-3])' |
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. '((:?)[0-5]\d)?|24\:?00)([\.,]\d+(?!:))?)?(\17[0-5]\d' |
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. '([\.,]\d+)?)?([zZ]|([\+-])([01]\d|2[0-3]):?([0-5]\d)?)?)?)?$/'; |
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return preg_match($crazyInsaneRegexThatSomehowDetectsIso8601, $string) === 1; |
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} |
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/** |
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* Determines if a value from Graph should be cast to DateTime. |
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* |
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* @param string $key |
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* |
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* @return boolean |
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*/ |
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public function shouldCastAsDateTime($key) |
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{ |
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return in_array($key, [ |
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'created_time', |
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'updated_time', |
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'start_time', |
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'end_time', |
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'backdated_time', |
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'issued_at', |
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'expires_at', |
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'publish_time' |
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], true); |
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} |
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/** |
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* Casts a date value from Graph to DateTime. |
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* |
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* @param int|string $value |
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* |
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* @return \DateTime |
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*/ |
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public function castToDateTime($value) |
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{ |
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if (is_int($value)) { |
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$dt = new \DateTime(); |
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$dt->setTimestamp($value); |
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} else { |
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$dt = new \DateTime($value); |
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} |
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return $dt; |
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} |
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/** |
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* Casts a birthday value from Graph to Birthday |
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* |
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* @param string $value |
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* |
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* @return Birthday |
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*/ |
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public function castToBirthday($value) |
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{ |
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return new Birthday($value); |
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} |
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/** |
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* Getter for $graphObjectMap. |
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* |
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* @return array |
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*/ |
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public static function getObjectMap() |
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{ |
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return static::$graphObjectMap; |
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} |
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} |
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