diff options
| -rw-r--r-- | Zotlabs/Lib/ActivityStreams2.php | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/Zotlabs/Lib/ActivityStreams2.php b/Zotlabs/Lib/ActivityStreams2.php new file mode 100644 index 000000000..46852886b --- /dev/null +++ b/Zotlabs/Lib/ActivityStreams2.php @@ -0,0 +1,86 @@ +<?php + +namespace Zotlabs\Lib; + + +class ActivityStreams2 { + + public $data; + public $valid = false; + public $id = ''; + public $type = ''; + public $actor = null; + public $obj = null; + public $tgt = null; + + function __construct($string) { + + $this->data = json_decode($string,true); + if($this->data) { + $this->valid = true; + } + + if($this->is_valid()) { + $this->id = $this->get_property_obj('id'); + $this->type = $this->get_primary_type(); + $this->actor = $this->get_compound_property('actor'); + $this->obj = $this->get_compound_property('object'); + $this->tgt = $this->get_compound_property('target'); + } + } + + function is_valid() { + return $this->valid; + } + + function get_property_obj($property,$base = '') { + if(! $base) { + $base = $this->data; + } + return $base[$property]; + } + + function fetch_property($url) { + $redirects = 0; + $x = z_fetch_url($url,true,$redirects, + ['headers' => [ 'Accept' => 'application/ld+json; profile="https://www.w3.org/ns/activitystreams"']]); + if($x['success']) + return json_decode($x['body'],true); + return null; + } + + function get_compound_property($property,$base = '') { + $x = $this->get_property_obj($property,$base); + if($this->is_url($x)) { + $x = $this->fetch_property($x); + } + return $x; + } + + function is_url($url) { + if(($url) && (! is_array($url)) && (strpos($url,'http') === 0)) { + return true; + } + return false; + } + + function get_primary_type($base = '') { + if(! $base) + $base = $this->data; + $x = $this->get_property_obj('type',$base); + if(is_array($x)) { + foreach($x as $y) { + if(strpos($y,':') === false) { + return $y; + } + } + } + return $x; + } + + function debug() { + $x = var_export($this,true); + return $x; + } + +}
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