Store cumulative player scores alongside balances

src/lib/server/db/migrations.ts

@@ -17,6 +17,7 @@ import { migrateHostSchema } from '../hosts/schema.js';
 import { migrateAuthSchema, migrateSuperViewerRole } from '../auth/schema.js';
 import { migrateGameFileSchema } from '../game-files/schema.js';
 import { migrateLeaderboardReports } from './leaderboard-reports.js';
+import { migratePlayerScoreTotal } from './player-score-total.js';
 import type { Migration } from './migration-runner.js';
 
 // Append only: never renumber entries or change an applied migration to add an
@@ -103,6 +104,11 @@ export const migrations: readonly Migration[] = [
         version: 18,
         name: 'durable leaderboard report identity and sequences',
         run: migrateLeaderboardReports
+    },
+    {
+        version: 19,
+        name: 'cumulative player score per match',
+        run: migratePlayerScoreTotal
     }
 ];
 

src/lib/server/db/player-score-total.ts

@@ -0,0 +1,11 @@
+import type Database from 'better-sqlite3';
+
+/** Old score balances cannot be used to reconstruct cumulative points. */
+export function migratePlayerScoreTotal(handle: Database.Database): void {
+    const columns = handle.prepare('PRAGMA table_info(leaderboard_match_players)').all() as {
+        name: string;
+    }[];
+    if (!columns.some((column) => column.name === 'score_total'))
+        handle.exec(`ALTER TABLE leaderboard_match_players ADD COLUMN score_total INTEGER
+            CHECK (score_total IS NULL OR (typeof(score_total) = 'integer' AND score_total >= 0))`);
+}