Move stats logic to model and fix caching

app/models/replay.ts

@@ -1,7 +1,67 @@
 import { DateTime } from 'luxon'
 import { BaseModel, column } from '@adonisjs/lucid/orm'
+import db from '@adonisjs/lucid/services/db'
+import redis from '@adonisjs/redis/services/main'
 
 export default class Replay extends BaseModel {
+  public static async updateReplayStats() {
+          let results = await db.rawQuery(`
+            SELECT
+              u.display_name,
+              u.sessions,
+              u.total_time_seconds,
+              u.total_time_readable,
+              u.average_session_time_readable,
+              u.average_time_seconds,
+              r.id AS last_session_id,
+              r.finished_at AS last_session_time
+
+            FROM (
+              -- Aggregate sessions in the last 30 days
+              SELECT
+                "user" ->> 'display_name' AS display_name,
+                COUNT(duration) AS sessions,
+                SUM(duration) AS total_time_seconds,
+                AVG(duration) AS average_time_seconds,
+                CONCAT(
+                  FLOOR(SUM(duration) / 86400), 'd ',
+                  FLOOR(MOD(SUM(duration), 86400) / 3600), 'h ',
+                  FLOOR(MOD(SUM(duration), 3600) / 60), 'm'
+                ) AS total_time_readable,
+                CONCAT(
+                  FLOOR(COUNT(duration) / 86400), 'd ',
+                  FLOOR(MOD(COUNT(duration), 86400) / 3600), 'h ',
+                  FLOOR(MOD(COUNT(duration), 3600) / 60), 'm'
+                ) AS average_session_time_readable
+              FROM
+                replays
+              WHERE
+                finished_at >= NOW() - INTERVAL '30 days'
+              GROUP BY
+                "user" ->> 'display_name'
+            ) u
+
+            -- LATERAL JOIN to get latest session (either within 30d or fallback to latest overall)
+            JOIN LATERAL (
+              SELECT id, finished_at
+              FROM replays
+              WHERE "user" ->> 'display_name' = u.display_name
+              ORDER BY
+                CASE WHEN finished_at >= NOW() - INTERVAL '30 days' THEN 0 ELSE 1 END,
+                finished_at DESC
+              LIMIT 1
+            ) r ON true
+
+            ORDER BY
+              u.total_time_seconds DESC;`
+          )
+            const updatedVersion = await redis.incr('replay:stats:latest_version')
+            results.version = updatedVersion
+            results.updatedAt = Date.now()
+            await redis.set(`replays:stats:latest_version`, updatedVersion)
+            await redis.set(`replays:stats:version:${updatedVersion}:results`, JSON.stringify(results))
+            return results
+  }
   @column({ isPrimary: true })
   declare id: string