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<?php
/**
* Copyright 2014 Facebook, Inc.
*
* You are hereby granted a non-exclusive, worldwide, royalty-free license to
* use, copy, modify, and distribute this software in source code or binary
* form for use in connection with the web services and APIs provided by
* Facebook.
*
* As with any software that integrates with the Facebook platform, your use
* of this software is subject to the Facebook Developer Principles and
* Policies [http://developers.facebook.com/policy/]. This copyright notice
* shall be included in all copies or substantial portions of the software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
*/
namespace Facebook\GraphNodes;
/**
* Class GraphNode
*
* @package Facebook
*/
class GraphNode extends Collection
{
/**
* @var array Maps object key names to Graph object types.
*/
protected static $graphObjectMap = [];
/**
* Init this Graph object.
*
* @param array $data
*/
public function __construct(array $data = [])
{
parent::__construct($this->castItems($data));
}
/**
* Iterates over an array and detects the types each node
* should be cast to and returns all the items as an array.
*
* @TODO Add auto-casting to AccessToken entities.
*
* @param array $data The array to iterate over.
*
* @return array
*/
public function castItems(array $data)
{
$items = [];
foreach ($data as $k => $v) {
if ($this->shouldCastAsDateTime($k)
&& (is_numeric($v)
|| $k === 'birthday'
|| $this->isIso8601DateString($v))
) {
$items[$k] = $this->castToDateTime($v);
} else {
$items[$k] = $v;
}
}
return $items;
}
/**
* Uncasts any auto-casted datatypes.
* Basically the reverse of castItems().
*
* @return array
*/
public function uncastItems()
{
$items = $this->asArray();
return array_map(function ($v) {
if ($v instanceof \DateTime) {
return $v->format(\DateTime::ISO8601);
}
return $v;
}, $items);
}
/**
* Get the collection of items as JSON.
*
* @param int $options
*
* @return string
*/
public function asJson($options = 0)
{
return json_encode($this->uncastItems(), $options);
}
/**
* Detects an ISO 8601 formatted string.
*
* @param string $string
*
* @return boolean
*
* @see https://developers.facebook.com/docs/graph-api/using-graph-api/#readmodifiers
* @see http://www.cl.cam.ac.uk/~mgk25/iso-time.html
* @see http://en.wikipedia.org/wiki/ISO_8601
*/
public function isIso8601DateString($string)
{
// This insane regex was yoinked from here:
// http://www.pelagodesign.com/blog/2009/05/20/iso-8601-date-validation-that-doesnt-suck/
// ...and I'm all like:
// http://thecodinglove.com/post/95378251969/when-code-works-and-i-dont-know-why
$crazyInsaneRegexThatSomehowDetectsIso8601 = '/^([\+-]?\d{4}(?!\d{2}\b))'
. '((-?)((0[1-9]|1[0-2])(\3([12]\d|0[1-9]|3[01]))?'
. '|W([0-4]\d|5[0-2])(-?[1-7])?|(00[1-9]|0[1-9]\d'
. '|[12]\d{2}|3([0-5]\d|6[1-6])))([T\s]((([01]\d|2[0-3])'
. '((:?)[0-5]\d)?|24\:?00)([\.,]\d+(?!:))?)?(\17[0-5]\d'
. '([\.,]\d+)?)?([zZ]|([\+-])([01]\d|2[0-3]):?([0-5]\d)?)?)?)?$/';
return preg_match($crazyInsaneRegexThatSomehowDetectsIso8601, $string) === 1;
}
/**
* Determines if a value from Graph should be cast to DateTime.
*
* @param string $key
*
* @return boolean
*/
public function shouldCastAsDateTime($key)
{
return in_array($key, [
'created_time',
'updated_time',
'start_time',
'end_time',
'backdated_time',
'issued_at',
'expires_at',
'birthday',
'publish_time'
], true);
}
/**
* Casts a date value from Graph to DateTime.
*
* @param int|string $value
*
* @return \DateTime
*/
public function castToDateTime($value)
{
if (is_int($value)) {
$dt = new \DateTime();
$dt->setTimestamp($value);
} else {
$dt = new \DateTime($value);
}
return $dt;
}
/**
* Getter for $graphObjectMap.
*
* @return array
*/
public static function getObjectMap()
{
return static::$graphObjectMap;
}
}
|
