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<?php
namespace App;
use Respect\Validation\Validator;
use Awobaz\Compoships\Database\Eloquent\Model;
use Carbon\Carbon;
use Illuminate\Database\Capsule\Manager as DB;
use Illuminate\Support\Collection;
use Movim\Widget\Wrapper;
use Moxl\Xec\Payload\Packet;
use React\Promise\Promise;
use SimpleXMLElement;
class Post extends Model
{
protected $primaryKey = 'id';
protected $guarded = [];
public $with = [
'attachments',
'likes',
'comments',
'contact',
'links',
'userAffiliation'
];
public $withCount = ['userViews'];
private $titleLimit = 700;
private $changed = false; // Detect if the set post was different from the cache
public array $attachments = [];
public array $resolvableAttachments = [];
public $tags = [];
public const MICROBLOG_NODE = 'urn:xmpp:microblog:0';
public const COMMENTS_NODE = 'urn:xmpp:microblog:0:comments';
public const STORIES_NODE = 'urn:xmpp:pubsub-social-feed:stories:0';
public function contact()
{
return $this->hasOne('App\Contact', 'id', 'aid');
}
public function tags()
{
return $this->belongsToMany('App\Tag')->withTimestamps();
}
public function comments()
{
return $this->hasMany('App\Post', 'parent_id', 'id')
->orderBy('published')
->where('like', false);
}
public function parent()
{
return $this->hasOne('App\Post', 'id', 'parent_id');
}
public function info()
{
return $this->hasOne('App\Info', ['server', 'node'], ['server', 'node']);
}
public function userAffiliation()
{
return $this->hasOne('App\Affiliation', ['server', 'node'], ['server', 'node'])
->where('jid', me()->id);
}
public function userViews()
{
return $this->belongsToMany(User::class, 'post_user_views', 'post_id', 'user_id')->withTimestamps();
}
public function myViews()
{
return $this->userViews()->where('user_id', me()->id);
}
public function likes()
{
return $this->hasMany('App\Post', 'parent_id', 'id')
->whereIn('id', function ($query) {
$query->select(DB::raw('min(id) as id'))
->from('posts')
->where('like', true)
->whereNotNull('aid')
->groupByRaw('aid, parent_id');
});
}
public function links()
{
return $this->hasMany('App\Attachment')
->where('category', 'link')
->whereNotIn('href', function ($query) {
$query->select('href')
->from('attachments')
->where('post_id', $this->id)
->where('category', 'picture')
->get();
});
}
/**
* Attachements
*/
public function attachments()
{
return $this->hasMany('App\Attachment');
}
public function resolveAttachments(): Collection
{
return $this->relations['attachments'] ?? $this->attachments()->get();
}
public function getOpenlinkAttribute()
{
return $this->resolveAttachments()->firstWhere('category', 'open');
}
public function getEmbedsAttribute()
{
return $this->resolveAttachments()->where('category', 'embed');
}
public function getEmbedAttribute()
{
return $this->resolveAttachments()->firstWhere('category', 'embed');
}
public function getFilesAttribute()
{
return $this->resolveAttachments()->where('category', 'file');
}
public function getPicturesAttribute()
{
return $this->resolveAttachments()
->where('category', 'picture')
->where('type', '!=', 'content');
}
public function getPictureAttribute()
{
return $this->resolveAttachments()->firstWhere('category', 'picture');
}
public function getAttachmentAttribute()
{
return $this->resolveAttachments()
->whereIn('rel', ['enclosure', 'related'])
->orderBy('rel', 'desc')
->first(); // related first
}
public function save(array $options = [])
{
try {
if (!$this->validAtom()) {
\logError('Invalid Atom: ' . $this->server . '/' . $this->node . '/' . $this->nodeid);
if ($this->created_at) {
$this->delete();
}
return;
}
if (!$this->changed) return;
parent::save($options);
if (!$this->isComment()) {
$this->healAttachments();
$this->attachments()->delete();
$this->attachments()->saveMany($this->attachments);
$this->tags()->sync($this->tags);
}
} catch (\Exception $e) {
/*
* When an article is received by two accounts simultaenously
* in different processes they can be saved using the insert state
* in the DB causing an error
*/
}
}
private function validAtom(): bool
{
return ($this->title != null && $this->updated != null);
}
public function scopeRestrictToMicroblog($query)
{
return $query->where('posts.node', Post::MICROBLOG_NODE);
}
public function scopeRestrictToCommunities($query)
{
return $query->where('posts.node', '!=', Post::MICROBLOG_NODE);
}
public function scopeWithoutComments($query)
{
return $query->whereNull('posts.parent_id');
}
public function scopeRestrictUserHost($query)
{
$configuration = Configuration::get();
if ($configuration->restrictsuggestions) {
$query->whereIn('id', function ($query) {
$host = me()->session->host;
$query->select('id')
->from('posts')
->where('server', 'like', '%.' . $host)
->orWhere('server', 'like', '@' . $host);
});
}
}
public function scopeRestrictReported($query)
{
$query->whereNotIn('aid', function ($query) {
$query->select('reported_id')
->from('reported_user')
->where('user_id', me()->id);
});
}
public function scopeRestrictNSFW($query)
{
$query->where('nsfw', false);
if (me()->nsfw) {
$query->orWhere('nsfw', true);
}
}
public function scopeRecents($query)
{
$query->join(
DB::raw('(
select max(published) as published, server, node
from posts
group by server, node) as recents
'),
function ($join) {
$join->on('posts.node', '=', 'recents.node');
$join->on('posts.published', '=', 'recents.published');
}
);
}
protected function withContactsScope($query, string $node = Post::MICROBLOG_NODE)
{
return $query->unionAll(
DB::table('posts')
->where('node', $node)
->whereIn('posts.server', function ($query) {
$query->from('rosters')
->select('jid')
->where('session_id', SESSION_ID)
->where('subscription', 'both');
})
);
}
public function scopeWithContacts($query)
{
return $this->withContactsScope($query);
}
protected function withMineScope($query, string $node = Post::MICROBLOG_NODE)
{
return $query->unionAll(
DB::table('posts')
->where('node', $node)
->where('server', me()->id)
);
}
public function scopeWithMine($query)
{
return $this->withMineScope($query);
}
protected function withSubscriptionsScope($query)
{
return $query->unionAll(
DB::table('posts')
->whereIn('server', function ($query) {
$query->select('server')
->from('subscriptions')
->where('jid', me()->id);
})
->whereIn('node', function ($query) {
$query->select('node')
->from('subscriptions')
->where('jid', me()->id);
})
);
}
public function scopeWithSubscriptions($query)
{
return $this->withSubscriptionsScope($query);
}
public function scopeMyStories($query, ?int $id = null)
{
$query = $query->whereIn('id', function ($query) {
$filters = DB::table('posts')->where('id', -1);
$filters = \App\Post::withMineScope($filters, Post::STORIES_NODE);
$filters = \App\Post::withContactsScope($filters, Post::STORIES_NODE);
$query->select('id')->from(
$filters,
'posts'
);
})
->where('published', '>', Carbon::now()->subDay())
->orderBy('published', 'desc');
if ($id != null) $query = $query->where('id', $id);
return $query;
}
public function getColorAttribute(): string
{
if ($this->contact) {
return $this->contact->color;
}
if ($this->aid) {
return stringToColor($this->aid);
}
return stringToColor($this->node);
}
public function getPreviousAttribute(): ?Post
{
return \App\Post::where('server', $this->server)
->where('node', $this->node)
->where('published', '<', $this->published)
->where('open', true)
->orderBy('published', 'desc')
->first();
}
public function getNextAttribute(): ?Post
{
return \App\Post::where('server', $this->server)
->where('node', $this->node)
->where('published', '>', $this->published)
->orderBy('published')
->where('open', true)
->first();
}
public function getTruenameAttribute()
{
if ($this->contact) {
return $this->contact->truename;
}
return $this->aid
? explodeJid($this->aid)['username']
: '';
}
public function getDecodedContentRawAttribute()
{
return htmlspecialchars_decode($this->contentraw, ENT_XML1 | ENT_COMPAT);
}
private function extractContent(SimpleXMLElement $contents): ?string
{
$content = null;
foreach ($contents as $c) {
switch ($c->attributes()->type) {
case 'html':
$d = htmlspecialchars_decode((string)$c);
$dom = new \DOMDocument('1.0', 'utf-8');
$dom->loadHTML('<div>' . $d . '</div>', LIBXML_NOERROR);
return (string)$dom->saveHTML($dom->documentElement->lastChild->lastChild);
break;
case 'xhtml':
$import = null;
$dom = new \DOMDocument('1.0', 'utf-8');
if ($c->children() instanceof \DOMElement) {
$import = @dom_import_simplexml($c->children());
}
if ($import == null) {
$import = dom_import_simplexml($c);
}
$element = $dom->importNode($import, true);
$dom->appendChild($element);
return (string)$dom->saveHTML();
break;
case 'text':
if (trim($c) != '') {
$this->contentraw = trim($c);
}
break;
default:
$content = (string)$c;
break;
}
}
return $content;
}
private function extractTitle($titles): ?string
{
$title = null;
foreach ($titles as $t) {
switch ($t->attributes()->type) {
case 'html':
case 'xhtml':
$title = strip_tags(
($t->children()->getName() == 'div' && (string)$t->children()->attributes()->xmlns == 'http://www.w3.org/1999/xhtml')
? html_entity_decode((string)$t->children()->asXML())
: (string)$t->children()->asXML()
);
break;
case 'text':
if (trim($t) != '') {
$title = trim($t);
}
break;
default:
$title = (string)$t;
break;
}
}
return $title;
}
public function set($entry, $delay = false)
{
$this->nodeid = (string)$entry->attributes()->id;
$hash = hash('sha256', $entry->asXML());
// Detect if things changed from the cached version
if ($hash == $this->contenthash) {
return \React\Promise\resolve();
}
$this->contenthash = $hash;
$this->changed = true;
// Ensure that the author is the publisher
if (
$entry->entry->author && $entry->entry->author->uri
&& 'xmpp:' . baseJid((string)$entry->attributes()->publisher) == (string)$entry->entry->author->uri
) {
$this->aid = substr((string)$entry->entry->author->uri, 5);
$this->aname = ($entry->entry->author->name)
? (string)$entry->entry->author->name
: null;
$this->aemail = ($entry->entry->author->email)
? (string)$entry->entry->author->email
: null;
} else {
$this->aid = null;
}
if (empty($this->aname)) {
$this->aname = null;
}
// Content
$this->title = $entry->entry->title
? $this->extractTitle($entry->entry->title)
: null;
$summary = ($entry->entry->summary && (string)$entry->entry->summary != '')
? '<p class="summary">' . (string)$entry->entry->summary . '</p>'
: null;
$content = $entry->entry->content
? $this->extractContent($entry->entry->content)
: null;
$this->content = $this->contentcleaned = null;
if ($summary != null || $content != null) {
$this->content = trim((string)$summary . (string)$content);
$this->contentcleaned = requestAPI('purifyhtml', 2, ['content' => $this->content]);
}
$this->updated = ($entry->entry->updated)
? toSQLDate($entry->entry->updated)
: null;
if ($entry->entry->published) {
$this->published = toSQLDate($entry->entry->published);
} elseif ($entry->entry->updated) {
$this->published = toSQLDate($entry->entry->updated);
} else {
$this->published = gmdate(MOVIM_SQL_DATE);
}
if ($delay) {
$this->delay = $delay;
}
// Tags parsing
if ($entry->entry->category) {
if (
$entry->entry->category->count() == 1
&& isset($entry->entry->category->attributes()->term)
&& !empty(trim($entry->entry->category->attributes()->term))
) {
$tag = \App\Tag::firstOrCreateSafe([
'name' => strtolower((string)$entry->entry->category->attributes()->term)
]);
$this->tags[] = $tag->id;
if ($tag->name == 'nsfw') {
$this->nsfw = true;
}
} else {
foreach ($entry->entry->category as $cat) {
if (!empty(trim((string)$cat->attributes()->term))) {
$tag = \App\Tag::firstOrCreateSafe([
'name' => strtolower((string)$cat->attributes()->term)
]);
if ($tag) {
$this->tags[] = $tag->id;
if ($tag->name == 'nsfw') {
$this->nsfw = true;
}
}
}
}
}
}
// Extract more tags if possible
$tagsContent = getHashtags(htmlspecialchars($this->title ?? ''))
+ getHashtags(htmlspecialchars($this->contentraw ?? ''));
foreach ($tagsContent as $tag) {
$tag = \App\Tag::firstOrCreateSafe([
'name' => strtolower((string)$tag)
]);
$this->tags[] = $tag->id;
}
if (current(explode('.', $this->server)) == 'nsfw') {
$this->nsfw = true;
}
if (!isset($this->commentserver)) {
$this->commentserver = $this->server;
}
// We fill empty aid
if ($this->isMicroblog() && empty($this->aid)) {
$this->aid = $this->server;
}
// We check if this is a reply
if ($entry->entry->{'in-reply-to'}) {
$href = (string)$entry->entry->{'in-reply-to'}->attributes()->href;
$arr = explode(';', $href);
$this->replyserver = substr($arr[0], 5, -1);
$this->replynode = substr($arr[1], 5);
$this->replynodeid = substr($arr[2], 5);
}
$extra = false;
// We try to extract a picture
$xml = \simplexml_load_string('<div>' . $this->contentcleaned . '</div>');
if ($xml) {
$results = $xml->xpath('//img/@src');
if (is_array($results) && !empty($results)) {
$extra = (string)$results[0];
} else {
$results = $xml->xpath('//video/@poster');
if (is_array($results) && !empty($results)) {
$extra = (string)$results[0];
}
}
$results = $xml->xpath('//a');
if (is_array($results) && !empty($results)) {
foreach ($results as $link) {
$link->addAttribute('target', '_blank');
}
}
}
$this->like = $this->isLike();
$this->open = false;
if ($this->isComment()) {
$p = \App\Post::where('commentserver', $this->server)
->where('commentnodeid', substr($this->node, 30))
->first();
if ($p) {
$this->parent_id = $p->id;
}
}
$this->setAttachments($entry->entry->link, $extra);
}
private function setAttachments($links, $extra = false)
{
$picture = false;
foreach ($links as $attachment) {
$enc = (array)$attachment->attributes();
$enc = $enc['@attributes'];
$att = new Attachment;
if (empty($enc['href'])) {
continue;
}
$att->rel = $enc['rel'] ?? 'alternate';
$att->href = $enc['href'];
$att->category = 'other';
if (isset($enc['title'])) {
$att->title = $enc['title'];
}
if (isset($enc['description'])) {
$att->description = $enc['description'];
}
switch ($att->rel) {
case 'enclosure':
if (isset($enc['type'])) {
$att->category = 'file';
$att->type = $enc['type'];
if (typeIsPicture($enc['type'])) {
$att->category = 'picture';
$picture = true;
}
}
break;
case 'alternate':
if (Validator::url()->isValid($enc['href'])) {
$this->open = true;
$att->category = 'open';
}
break;
case 'related':
$att->category = 'link';
$att->logo = (isset($enc['logo'])) ? $enc['logo'] : null;
break;
}
if (in_array($att->rel, ['enclosure', 'related', 'alternate'])) {
$atte = new Attachment;
$atte->rel = $att->rel;
$atte->category = 'embed';
// Youtube
if (preg_match('%(?:youtube(?:-nocookie)?\.com/(?:[^/]+/.+/|(?:v|e(?:mbed)?)/|.*[?&]v=)|youtu\.be/)([^"&?/ ]{11})%i', $enc['href'], $match)) {
$atte->href = 'https://www.youtube.com/embed/' . $match[1];
$this->attachments[] = $atte;
// RedGif
} elseif (preg_match('/(?:https:\/\/)?(?:www.)?redgifs.com\/watch\/([a-zA-Z]+)$/', $enc['href'], $match)) {
$atte->href = 'https://www.redgifs.com/ifr/' . $match[1];
$this->attachments[] = $atte;
$this->resolveUrl($enc['href']);
// PeerTube
} elseif (
preg_match('/https:\/\/?(.*)\/w\/(\w{22})/', $enc['href'], $match)
|| preg_match('/https:\/\/?(.*)\/videos\/watch\/([0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12})/', $enc['href'], $match)
) {
$atte->href = 'https://' . $match[1] . '/videos/embed/' . $match[2];
$this->attachments[] = $atte;
// Reddit
} elseif (
in_array(parse_url($enc['href'], PHP_URL_HOST), ['old.reddit.com', 'reddit.com', 'www.reddit.com'])
&& substr(parse_url($enc['href'], PHP_URL_PATH), 0, 8) == '/gallery'
) {
$this->resolveUrl($enc['href']);
}
}
$this->attachments[] = $att;
if ((string)$attachment->attributes()->title == 'comments') {
$url = parse_url(urldecode((string)$attachment->attributes()->href));
if ($url) {
$this->commentserver = $url['path'];
$this->commentnodeid = substr($url['query'], 36);
}
}
}
if ($picture == false && $extra) {
$attachment = new Attachment;
$attachment->rel = 'enclosure';
$attachment->href = $extra;
$attachment->type = 'content';
$attachment->category = 'picture';
$this->attachments[] = $attachment;
}
}
private function resolveUrl(string $url)
{
array_push(
$this->resolvableAttachments,
new Promise(function () use ($url) {
\requestResolverWorker($url)->then(function ($extractor) {
try {
$atte = new Attachment;
$atte->rel = 'enclosure';
$atte->href = $extractor->image;
$atte->type = 'media/jpeg';
$atte->category = 'picture';
$atte->post_id = $this->id;
$atte->save();
} catch (\Throwable $th) {
//
}
Wrapper::getInstance()->iterate('post_resolved', (new Packet)->pack($this->id));
});
})
);
}
private function healAttachments()
{
$enclosures = [];
foreach (array_filter($this->attachments, fn($a) => $a->rel == 'enclosure') as $attachment) {
array_push($enclosures, $attachment->href);
}
foreach (array_filter($this->attachments, fn($a) => $a->rel != 'enclosure') as $key => $attachment) {
if (in_array($attachment->href, $enclosures)) {
unset($this->attachments[$key]);
}
}
// Remove duplicates...
foreach ($this->attachments as $key => $attachment) {
foreach ($this->attachments as $keyCheck => $attachmentCheck) {
if (
$key != $keyCheck
&& $attachment->href == $attachmentCheck->href
&& $attachment->category == $attachmentCheck->category
&& $attachment->rel == $attachmentCheck->rel
) {
unset($this->attachments[$key]);
}
}
}
}
public function getUUID()
{
if (substr($this->nodeid, 10) == 'urn:uuid:') {
return $this->nodeid;
}
return 'urn:uuid:' . generateUUID(hash('sha256', $this->server . $this->node . $this->nodeid, true));
}
public function getRef(): string
{
return 'xmpp:' . $this->server . '?;node=' . $this->node . ';item=' . $this->nodeid;
}
public function getLink(?bool $public = false): string
{
if ($public) {
return $this->isMicroblog()
? \Movim\Route::urlize('blog', [$this->server, $this->nodeid])
: \Movim\Route::urlize('community', [$this->server, $this->node, $this->nodeid]);
}
return \Movim\Route::urlize('post', [$this->server, $this->node, $this->nodeid]);
}
// Works only for the microblog posts
public function getParent(): ?Post
{
return \App\Post::find($this->parent_id);
}
public function isMine(User $me, ?bool $force = false): bool
{
if ($force) {
return ($this->aid == $me->id);
}
return ($this->aid == $me->id
|| $this->server == $me->id);
}
public function isMicroblog(): bool
{
return ($this->node == "urn:xmpp:microblog:0");
}
public function isEdited(): bool
{
return $this->published != $this->updated;
}
public function isEditable(): bool
{
return ($this->contentraw != null || $this->links != null);
}
public function isShort(): bool
{
return $this->contentcleaned == null || (strlen($this->contentcleaned) < 700);
}
public function isBrief(): bool
{
return ($this->content == null && strlen($this->title) < $this->titleLimit);
}
public function isReply(): bool
{
return isset($this->replynodeid);
}
public function isLike(): bool
{
return ($this->title == '♥');
}
public function isRTL(): bool
{
return (isRTL($this->contentraw ?? '') || isRTL($this->title ?? ''));
}
public function isStory(): bool
{
return $this->node == Post::STORIES_NODE;
}
public function isComment(): bool
{
return (str_starts_with($this->node, Post::COMMENTS_NODE));
}
public function hasCommentsNode(): bool
{
return (isset($this->commentserver)
&& isset($this->commentnodeid));
}
public function getSummary()
{
if ($this->isBrief()) {
return truncate(html_entity_decode($this->title), 140);
}
return truncate(stripTags(html_entity_decode($this->contentcleaned ?? '')), 140);
}
public function getContent(bool $addHashTagLinks = false): string
{
if ($this->contentcleaned == null) return '';
return ($addHashTagLinks)
? addHashtagsLinks($this->contentcleaned)
: $this->contentcleaned;
}
public function getReply()
{
if (!$this->replynodeid) {
return;
}
return \App\Post::where('server', $this->replyserver)
->where('node', $this->replynode)
->where('nodeid', $this->replynodeid)
->first();
}
public function isLiked()
{
return ($this->likes()->where('aid', me()->id)->count() > 0);
}
public function isRecycled()
{
return false;
}
}