// add a basic CTE that will join in only the requested subscription
$q->setCTE("subscribed_feeds(id,sub) as (SELECT ?,?)", ["int","int"], [$id,$context->subscription]);
$q->setCTE("subscribed_feeds(id,sub) as (SELECT ?,?)", ["int","int"], [$id,$context->subscription], "join subscribed_feeds on feed is subscribed_feeds.id");
} else if($context->folder()) {
// if a folder is specified, make sure it exists
$this->folderValidateId($user, $context->folder);
// if it does exist, add a common table expression to list it and its children so that we select from the entire subtree
$q->setCTE("folders(folder) as (SELECT ? union select id from arsse_folders join folders on parent is folder)", "int", $context->folder);
// add another CTE for the subscriptions within the folder
$q->setCTE("subscribed_feeds(id,sub) as (SELECT feed,id from arsse_subscriptions join user on user is owner join folders on arsse_subscriptions.folder is folders.folder)");
$q->setCTE("subscribed_feeds(id,sub) as (SELECT feed,id from arsse_subscriptions join user on user is owner join folders on arsse_subscriptions.folder is folders.folder)", [], [], "join subscribed_feeds on feed is subscribed_feeds.id");
} else {
// otherwise add a CTE for all the user's subscriptions
$q->setCTE("subscribed_feeds(id,sub) as (SELECT feed,id from arsse_subscriptions join user on user is owner)");
$q->setCTE("subscribed_feeds(id,sub) as (SELECT feed,id from arsse_subscriptions join user on user is owner)", [], [], "join subscribed_feeds on feed is subscribed_feeds.id");
}
// filter for specific article or edition
if($context->article()) $q->setWhere("arsse_article.id is ?", "int", $context->article);
if($context->edition()) $q->setWhere("arsse_article.id is (SELECT article from arsse_editions where id is ?)", "int", $context->edition);