feat: add database indexes for performance optimization

src/db/indexes.test.ts

@@ -0,0 +1,43 @@
+import { expect, test, describe } from "bun:test";
+import { postgres } from "../lib/DrizzleClient";
+
+describe("Database Indexes", () => {
+    test("should have indexes on users table", async () => {
+        const result = await postgres`
+            SELECT indexname FROM pg_indexes 
+            WHERE tablename = 'users'
+        `;
+        const indexNames = result.map(r => r.indexname);
+        expect(indexNames).toContain("users_balance_idx");
+        expect(indexNames).toContain("users_level_xp_idx");
+    });
+
+    test("should have index on transactions table", async () => {
+        const result = await postgres`
+            SELECT indexname FROM pg_indexes 
+            WHERE tablename = 'transactions'
+        `;
+        const indexNames = result.map(r => r.indexname);
+        expect(indexNames).toContain("transactions_created_at_idx");
+    });
+
+    test("should have indexes on moderation_cases table", async () => {
+        const result = await postgres`
+            SELECT indexname FROM pg_indexes 
+            WHERE tablename = 'moderation_cases'
+        `;
+        const indexNames = result.map(r => r.indexname);
+        expect(indexNames).toContain("moderation_cases_user_id_idx");
+        expect(indexNames).toContain("moderation_cases_case_id_idx");
+    });
+
+    test("should have indexes on user_timers table", async () => {
+        const result = await postgres`
+            SELECT indexname FROM pg_indexes 
+            WHERE tablename = 'user_timers'
+        `;
+        const indexNames = result.map(r => r.indexname);
+        expect(indexNames).toContain("user_timers_expires_at_idx");
+        expect(indexNames).toContain("user_timers_lookup_idx");
+    });
+});