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Diffstat (limited to 'src/datalayer.clj')
| -rw-r--r-- | src/datalayer.clj | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/src/datalayer.clj b/src/datalayer.clj new file mode 100644 index 0000000..7086b12 --- /dev/null +++ b/src/datalayer.clj @@ -0,0 +1,76 @@ +(ns datalayer + (:require redis + tags) + (:use config + utils)) + + + +;;;; Message lookup + +(defn recent-posts-query [user-id] + (format " +SELECT u.user_id, u.nick, u.avatar, + m.content, m.message_id%s +FROM users u +LEFT JOIN messages m on m.message_id = + (SELECT message_id FROM messages + WHERE user_id = u.user_id + AND is_image + AND room_id IN (SELECT room_id from rooms where admin_only = false) + ORDER BY created_on desc LIMIT 1) +WHERE u.user_id = ANY(?)" + (if user-id + (format + ", + EXISTS (SELECT 1 FROM tags + WHERE tag = 'favorite' AND user_id = %s AND message_id = m.message_id) AS favorited" + user-id) + ", false AS favorited"))) + +(defn lookup-recent-posts [user-tag-id user-ids] + (do-select [(recent-posts-query user-tag-id) + (sql-array "int" user-ids)])) + +(defn lookup-recent-posts-tagless [user-tag-id user-ids] + (do-select [(recent-posts-query nil) + (sql-array "int" user-ids)])) + +(defn fetch-message-by-id [m-id] + (let [query "SELECT m.message_id, m.content, m.created_on, m.user_id, + u.nick, u.avatar, r.key, r.admin_only + FROM messages m, users u, rooms r + WHERE m.user_id = u.user_id + AND r.room_id = m.room_id + AND m.message_id = ?"] + (first (do-select [query (maybe-parse-int m-id -1)])))) + + + +;;;; Popular Posts + +(def popular-dumps-qry " +select u.nick, u.avatar, r.key, m.message_id, m.content, m.created_on, count(*) as count, + array_agg(u2.nick) as user_nicks +from users u, messages m, rooms r, tags t, users u2 +where lower(u.nick) = lower(?) +and u.user_id = m.user_id and m.message_id = t.message_id +and m.room_id = r.room_id and m.is_image = true and r.admin_only = false +and t.tag = 'favorite' +and t.user_id = u2.user_id +group by u.nick, u.avatar, r.key, m.message_id, m.content, m.created_on +order by count desc limit ? offset ?") + +(defn fetch-popular-dumps [nick viewer-nick] + (for [d (do-select [popular-dumps-qry nick 40 0])] + (let [favers (vec (.getArray (:user_nicks d)))] + (assoc d + :favers favers + :favorited (some #(= % viewer-nick) favers))))) + +(defn fetch-popular-dumps-redis [nick viewer-nick] + (let [rkey (str "popular:" nick) + msg-ids (redis/with-server redis-server + (redis/zrevrange rkey 0 (dec num-popular-dumps))) + msg-ids (map maybe-parse-int msg-ids)] + (tags/fetch-dumps-by-ids msg-ids viewer-nick)))
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