friendica/include/socgraph.php

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<?php
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require_once('include/datetime.php');
/*
* poco_load
*
* Given a contact-id (minimum), load the PortableContacts friend list for that contact,
* and add the entries to the gcontact (Global Contact) table, or update existing entries
* if anything (name or photo) has changed.
* We use normalised urls for comparison which ignore http vs https and www.domain vs domain
*
* Once the global contact is stored add (if necessary) the contact linkage which associates
* the given uid, cid to the global contact entry. There can be many uid/cid combinations
* pointing to the same global contact id.
*
*/
function poco_load($cid,$uid = 0,$url = null) {
$a = get_app();
if((! $url) || (! $uid)) {
$r = q("select `poco`, `uid` from `contact` where `id` = %d limit 1",
intval($cid)
);
if(count($r)) {
$url = $r[0]['poco'];
$uid = $r[0]['uid'];
}
}
if((! $url) || (! $uid))
return;
$s = fetch_url($url . '/@me/@all?fields=displayName,urls,photos');
if(($a->get_curl_code() > 299) || (! $s))
return;
$j = json_decode($s);
foreach($j->entry as $entry) {
$profile_url = '';
$profile_photo = '';
$name = '';
$name = $entry->displayName;
foreach($entry->urls as $url) {
if($url->type == 'profile') {
$profile_url = $url->value;
break;
}
}
foreach($entry->photos as $photo) {
if($photo->type == 'profile') {
$profile_photo = $photo->value;
break;
}
}
if((! $name) || (! $profile_url) || (! $profile_photo))
continue;
$x = q("select * from `gcontact` where `nurl` = '%s' limit 1",
dbesc(normalise_link($profile_url))
);
if(count($x)) {
$gcid = $x[0]['id'];
if($x[0]['name'] != $name || $x[0]['photo'] != $profile_photo) {
q("update gcontact set `name` = '%s', `photo` = '%s' where
`nurl` = '%s' limit 1",
dbesc($name),
dbesc($profile_photo),
dbesc(normalise_link($profile_url))
);
}
}
else {
q("insert into `gcontact` (`name`,`url`,`nurl`,`photo`)
values ( '%s', '%s', '%s', '%s') ",
dbesc($name),
dbesc($profile_url),
dbesc(normalise_link($profile_url)),
dbesc($profile_photo)
);
$x = q("select * from `gcontact` where `nurl` = '%s' limit 1",
dbesc(normalise_link($profile_url))
);
if(count($x))
$gcid = $x[0]['id'];
}
if(! $gcid)
return;
$r = q("select * from glink where `cid` = %d and `uid` = %d and `gcid` = %d limit 1",
intval($cid),
intval($uid),
intval($gcid)
);
if(! count($r)) {
q("insert into glink ( `cid`,`uid`,`gcid`,`updated`) values (%d,%d,%d,'%s') ",
intval($cid),
intval($uid),
intval($gcid),
dbesc(datetime_convert())
);
}
else {
q("update glink set updated = '%s' where `cid` = %d and `uid` = %d and `gcid` = %d limit 1",
dbesc(datetime_convert()),
intval($cid),
intval($uid),
intval($gcid)
);
}
}
q("delete from glink where `cid` = %d and `uid` = %d and `updated` < UTC_TIMESTAMP - INTERVAL 2 DAY",
intval($cid),
intval($uid)
);
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}
function count_common_friends($uid,$cid) {
$r = q("SELECT count(*) as `total`
FROM `glink` left join `gcontact` on `glink`.`gcid` = `gcontact`.`id`
where `glink`.`cid` = %d and `glink`.`uid` = %d
and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and id != %d ) ",
intval($cid),
intval($uid),
intval($uid),
intval($cid)
);
if(count($r))
return $r[0]['total'];
return 0;
}
function common_friends($uid,$cid) {
$r = q("SELECT `gcontact`.*
FROM `glink` left join `gcontact` on `glink`.`gcid` = `gcontact`.`id`
where `glink`.`cid` = %d and `glink`.`uid` = %d
and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and id != %d ) ",
intval($cid),
intval($uid),
intval($uid),
intval($cid)
);
return $r;
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}
function suggestion_query($uid, $start = 0, $limit = 40) {
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if(! $uid)
return array();
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$r = q("SELECT count(glink.gcid) as `total`, gcontact.* from gcontact
left join glink on glink.gcid = gcontact.id
where uid = %d and not gcontact.nurl in ( select nurl from contact where uid = %d)
group by glink.gcid order by total desc limit %d, %d ",
intval($uid),
intval($uid),
intval($start),
intval($limit)
);
return $r;
}