feat: ensure players only appear once (#110)

* feat: ensure players only appear once

* feat: remove !!!

src/db/model.d.ts

@@ -25,6 +25,8 @@ export interface MmrRating {
   sigma: string | null;
   counter: number | null;
   game: string | null;
+  queue_channel_id: number | null;
+  time: number | null;
 }
 
 export interface Points {
@@ -33,11 +35,19 @@ export interface Points {
   wins: number | null;
   losses: number | null;
   game: string | null;
+  queue_channel_id: number | null;
+}
+
+export interface QueueChannels {
+  guild_id: number | null;
+  channel_id: number | null;
+  unique_leaderboard: boolean | null;
 }
 
 export interface DB {
   games: Games;
   igns: Igns;
   mmr_rating: MmrRating;
   points: Points;
+  queuechannels: QueueChannels;
 }

src/db/queries/leaderboard.ts

@@ -46,7 +46,13 @@ export async function fetchLeaderboardRaw(
   let builder = db
     .selectFrom("mmr_rating")
     .where("mmr_rating.guild_id", "=", guildId)
-    // join with mmr_rating, same user_id and guild_id
+    .where("mmr_rating.time", "=",
+      (qb) => qb.selectFrom("mmr_rating as latest_mmr")
+        .select(sql<number>`MAX(${sql.ref('latest_mmr.time')})`.as("max_time"))
+        .whereRef("latest_mmr.user_id", "=", "mmr_rating.user_id")
+        .where("latest_mmr.guild_id", "=", guildId)
+    )
+    // join with points, same user_id and guild_id
     .leftJoin("points", (eb) => eb.on(b => b.and([
       b(b.ref("points.user_id"), "=", b.ref("mmr_rating.user_id")),
       b(b.ref("points.guild_id"), "=", b.ref("mmr_rating.guild_id"))