/** Deletes from the database articles which are beyond the configured clean-up threshold */
public function articleCleanup(): bool {
$query = $this->db->prepare(
$query = $this->db->prepareArray(
"WITH RECURSIVE
exempt_articles as (SELECT id from arsse_articles join (SELECT article, max(id) as edition from arsse_editions group by article) as latest_editions on arsse_articles.id = latest_editions.article where feed = ? order by edition desc limit ?),
target_articles as (
select id from arsse_articles
left join (select article, sum(starred) as starred, sum(\"read\") as \"read\", max(arsse_marks.modified) as marked_date from arsse_marks join arsse_subscriptions on arsse_subscriptions.id = arsse_marks.subscription group by article) as mark_stats on mark_stats.article = arsse_articles.id
left join (select feed, count(*) as subs from arsse_subscriptions group by feed) as feed_stats on feed_stats.feed = arsse_articles.feed
where arsse_articles.feed = ? and coalesce(starred,0) = 0 and (coalesce(marked_date,modified) <= ? or (coalesce(\"read\",0) = coalesce(subs,0) and coalesce(marked_date,modified) <= ?))
)
exempt_articles as (
SELECT
id
from arsse_articles join (
SELECT article, max(id) as edition from arsse_editions group by article
) as latest_editions on arsse_articles.id = latest_editions.article
where feed = ? order by edition desc limit ?
),
target_articles as (
SELECT
id
from arsse_articles
join (
select
feed,
count(*) as subs
from arsse_subscriptions
where feed = ?
group by feed
) as feed_stats on feed_stats.feed = arsse_articles.feed
left join (
select
article,
sum(cast((starred = 1 and hidden = 0) as integer)) as starred,
sum(cast((\"read\" = 1 or hidden = 1) as integer)) as \"read\",
max(arsse_marks.modified) as marked_date
from arsse_marks
group by article
) as mark_stats on mark_stats.article = arsse_articles.id
where
coalesce(starred,0) = 0
and (
coalesce(marked_date,modified) <= ?
or (
coalesce(\"read\",0) = coalesce(subs,0)
and coalesce(marked_date,modified) <= ?
)
)
)
DELETE FROM arsse_articles WHERE id not in (select id from exempt_articles) and id in (select id from target_articles)",
