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Refactor reply-chain SQL to use CTEs and fix a bug where they were chaining to the wrong parent tweets

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This commit is contained in:
Alessio 2023-08-04 13:10:46 -03:00
parent 9d3eacc256
commit 3c3fd55991
1 changed files with 24 additions and 10 deletions
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34
pkg/persistence/compound_queries.go
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@ -246,15 +246,29 @@ func (p Profile) GetTweetDetail(id TweetID) (TweetDetailView, error) {
ret.ReplyChains = append(ret.ReplyChains, []TweetID{r.ID})
}
reply2_query := `
select id, user_id, text, posted_at, num_likes, num_retweets, num_replies, num_quote_tweets, in_reply_to_id, quoted_tweet_id,
mentions, reply_mentions, hashtags, ifnull(space_id, '') space_id, ifnull(tombstone_types.short_name, "") tombstone_type,
is_expandable,
is_stub, is_content_downloaded, is_conversation_scraped, last_scraped_at
from tweets
left join tombstone_types on tweets.tombstone_type = tombstone_types.rowid
where in_reply_to_id in (` + strings.Repeat("?,", len(reply_1_ids)-1) + `?)
order by num_likes desc
limit 50`
with parent_ids(id) as (values ` + strings.Repeat("(?), ", len(reply_1_ids)-1) + `(?)),
all_reply_ids(id, parent_id, num_likes) as (
select tweets.id, tweets.in_reply_to_id, num_likes
from parent_ids
left join tweets on tweets.in_reply_to_id = parent_ids.id
),
top_ids_by_parent(id, parent_id) as (
select id, parent_id outer_parent_id
from all_reply_ids
where id = (
select id from all_reply_ids
where parent_id = outer_parent_id
order by num_likes desc limit 1
)
)
select tweets.id id, user_id, text, posted_at, num_likes, num_retweets, num_replies, num_quote_tweets, in_reply_to_id,
quoted_tweet_id, mentions, reply_mentions, hashtags, ifnull(space_id, '') space_id,
ifnull(tombstone_types.short_name, "") tombstone_type, is_expandable,
is_stub, is_content_downloaded, is_conversation_scraped, last_scraped_at
from top_ids_by_parent
left join tweets on tweets.id = top_ids_by_parent.id
left join tombstone_types on tweets.tombstone_type = tombstone_types.rowid`
err = p.DB.Select(&replies, reply2_query, reply_1_ids...)
if err != nil {
panic(err)
@ -262,7 +276,7 @@ func (p Profile) GetTweetDetail(id TweetID) (TweetDetailView, error) {
for _, r := range replies {
ret.Tweets[r.ID] = r
for i, chain := range ret.ReplyChains {
if chain[0] == r.InReplyToID {
if len(chain) == 1 && chain[0] == r.InReplyToID {
ret.ReplyChains[i] = append(chain, r.ID)
break
}