feat: get occurences by day

apps/backend/src/backend/postgres/queries.gleam

@@ -3,6 +3,7 @@ import backend/data/hex_user.{type HexUser}
 import backend/error
 import backend/gleam/context
 import birl.{type Time}
+import birl/duration
 import gleam/bool
 import gleam/dict.{type Dict}
 import gleam/dynamic
@@ -102,11 +103,18 @@ pub fn upsert_search_analytics_timeseries(
 }
 
 pub fn get_timeseries_count(db: pgo.Connection) {
- "SELECT count(*), date
- FROM analytics_timeseries
- WHERE date >= now() - INTERVAL '30 day'
- GROUP BY date
- ORDER BY date desc"
+ "SELECT
+ SUM(at.occurences - COALESCE(
+ (SELECT att.occurences
+ FROM analytics_timeseries att
+ WHERE att.date < at.date
+ AND att.query = at.query),
+ 0)
+ ), at.date
+ FROM analytics_timeseries at
+ WHERE at.date >= now() - INTERVAL '30 day'
+ GROUP BY at.date
+ ORDER BY date DESC"
  |> pgo.execute(db, [], dynamic.tuple2(dynamic.int, helpers.decode_time))
  |> result.map_error(error.DatabaseError)
  |> result.map(fn(r) { r.rows })