[WIP] Setup Authentication Database Schema for User Management

__tests__/prisma/schema.test.ts

@@ -0,0 +1,57 @@
+import { describe, it, expect } from 'vitest'
+import { prisma } from '../../lib/prisma/client'
+
+describe('Database Schema', () => {
+  it('should create a user with valid data', async () => {
+    const user = await prisma.user.create({
+      data: {
+        email: 'test@example.com',
+        password: 'hashedpassword123',
+        username: 'testuser',
+        firstName: 'Test',
+        lastName: 'User'
+      }
+    })
+
+    expect(user).toBeDefined()
+    expect(user.email).toBe('test@example.com')
+    expect(user.username).toBe('testuser')
+  })
+
+  it('should prevent duplicate email creation', async () => {
+    await prisma.user.create({
+      data: {
+        email: 'unique@example.com',
+        password: 'hashedpassword123'
+      }
+    })
+
+    await expect(prisma.user.create({
+      data: {
+        email: 'unique@example.com',
+        password: 'anotherpassword'
+      }
+    })).rejects.toThrow()
+  })
+
+  it('should create a saved job for a user', async () => {
+    const user = await prisma.user.create({
+      data: {
+        email: 'jobseeker@example.com',
+        password: 'hashedpassword123'
+      }
+    })
+
+    const savedJob = await prisma.savedJob.create({
+      data: {
+        jobId: 'job123',
+        title: 'Software Engineer',
+        company: 'Tech Corp',
+        userId: user.id
+      }
+    })
+
+    expect(savedJob).toBeDefined()
+    expect(savedJob.userId).toBe(user.id)
+  })
+})

lib/prisma/client.ts

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+import { PrismaClient } from '@prisma/client'
+
+// Ensure a single instance of PrismaClient in development
+const globalForPrisma = global as unknown as { prisma: PrismaClient }
+
+export const prisma =
+  globalForPrisma.prisma ||
+  new PrismaClient({
+    log: process.env.NODE_ENV === 'development' ? ['query', 'error', 'warn'] : ['error'],
+  })
+
+if (process.env.NODE_ENV !== 'production') globalForPrisma.prisma = prisma