Rewrite the data access layer onto Prisma Client

test/db.test.js

@@ -1,5 +1,5 @@
 import { describe, it, expect, afterAll } from 'vitest';
-import { getPool, closePool, buildDatabaseUrl } from '../src/db.js';
+import { getPrismaClient, closePrismaClient, buildDatabaseUrl } from '../src/db.js';
 import { loadConfig } from '../src/config.js';
 
 describe('buildDatabaseUrl', () => {
@@ -20,25 +20,25 @@ describe('buildDatabaseUrl', () => {
   });
 });
 
-describe('getPool', () => {
+describe('getPrismaClient', () => {
   afterAll(async () => {
-    await closePool();
+    await closePrismaClient();
   });
 
-  it('returns a working pool that can run a query', async () => {
+  it('returns a working client that can run a query', async () => {
     const config = loadConfig();
-    const pool = getPool(config);
+    const prisma = getPrismaClient(config);
 
-    const rows = await pool.query('SELECT 1 AS value');
+    const rows = await prisma.$queryRaw`SELECT 1 AS value`;
 
     expect(Number(rows[0].value)).toBe(1);
   });
 
-  it('returns the same pool instance on repeated calls', () => {
+  it('returns the same client instance on repeated calls', () => {
     const config = loadConfig();
-    const poolA = getPool(config);
-    const poolB = getPool(config);
+    const clientA = getPrismaClient(config);
+    const clientB = getPrismaClient(config);
 
-    expect(poolA).toBe(poolB);
+    expect(clientA).toBe(clientB);
   });
 });