v0.1.9 - 인증 API 추가

backend/src/routes/auth.js

@@ -0,0 +1,197 @@
+import { eq } from 'drizzle-orm'
+import { z } from 'zod'
+import { db } from '../db/client.js'
+import { authSessions, users } from '../db/schema.js'
+import { env } from '../config.js'
+import {
+  createSessionToken,
+  hashPassword,
+  hashSessionToken,
+  verifyPassword,
+} from '../lib/password.js'
+
+const signupSchema = z.object({
+  email: z.string().trim().email(),
+  password: z.string().min(8).max(72),
+  nickname: z.string().trim().min(2).max(30),
+})
+
+const loginSchema = z.object({
+  email: z.string().trim().email(),
+  password: z.string().min(1).max(72),
+})
+
+function sanitizeUser(user) {
+  return {
+    id: user.id,
+    email: user.email,
+    nickname: user.nickname,
+    createdAt: user.createdAt,
+    updatedAt: user.updatedAt,
+  }
+}
+
+function getBearerToken(request) {
+  const authorization = request.headers.authorization
+
+  if (!authorization?.startsWith('Bearer ')) {
+    return null
+  }
+
+  return authorization.slice('Bearer '.length).trim()
+}
+
+async function createSession(userId) {
+  const token = createSessionToken()
+  const tokenHash = hashSessionToken(token)
+  const now = Date.now()
+  const expiresAt = now + env.SESSION_TTL_DAYS * 24 * 60 * 60 * 1000
+
+  const [session] = await db
+    .insert(authSessions)
+    .values({
+      userId,
+      tokenHash,
+      expiresAt: new Date(expiresAt),
+      createdAt: new Date(now),
+    })
+    .returning()
+
+  return {
+    token,
+    session,
+  }
+}
+
+async function findAuthenticatedUser(request) {
+  const token = getBearerToken(request)
+
+  if (!token) {
+    return null
+  }
+
+  const tokenHash = hashSessionToken(token)
+
+  const [session] = await db
+    .select()
+    .from(authSessions)
+    .where(eq(authSessions.tokenHash, tokenHash))
+    .limit(1)
+
+  if (!session || new Date(session.expiresAt).getTime() <= Date.now()) {
+    return null
+  }
+
+  const [user] = await db
+    .select()
+    .from(users)
+    .where(eq(users.id, session.userId))
+    .limit(1)
+
+  return user ?? null
+}
+
+export async function registerAuthRoutes(app) {
+  app.post('/api/auth/signup', async (request, reply) => {
+    const payload = signupSchema.safeParse(request.body)
+
+    if (!payload.success) {
+      return reply.code(400).send({
+        message: '회원가입 입력값이 올바르지 않습니다.',
+        issues: payload.error.flatten(),
+      })
+    }
+
+    const { email, password, nickname } = payload.data
+    const normalizedEmail = email.toLowerCase()
+
+    const [existingUser] = await db
+      .select()
+      .from(users)
+      .where(eq(users.email, normalizedEmail))
+      .limit(1)
+
+    if (existingUser) {
+      return reply.code(409).send({
+        message: '이미 사용 중인 이메일입니다.',
+      })
+    }
+
+    const now = new Date()
+    const passwordHash = await hashPassword(password)
+
+    const [user] = await db
+      .insert(users)
+      .values({
+        email: normalizedEmail,
+        passwordHash,
+        nickname,
+        createdAt: now,
+        updatedAt: now,
+      })
+      .returning()
+
+    const { token } = await createSession(user.id)
+
+    return reply.code(201).send({
+      message: '회원가입이 완료되었습니다.',
+      token,
+      user: sanitizeUser(user),
+    })
+  })
+
+  app.post('/api/auth/login', async (request, reply) => {
+    const payload = loginSchema.safeParse(request.body)
+
+    if (!payload.success) {
+      return reply.code(400).send({
+        message: '로그인 입력값이 올바르지 않습니다.',
+        issues: payload.error.flatten(),
+      })
+    }
+
+    const normalizedEmail = payload.data.email.toLowerCase()
+
+    const [user] = await db
+      .select()
+      .from(users)
+      .where(eq(users.email, normalizedEmail))
+      .limit(1)
+
+    if (!user) {
+      return reply.code(401).send({
+        message: '이메일 또는 비밀번호가 올바르지 않습니다.',
+      })
+    }
+
+    const passwordMatches = await verifyPassword(payload.data.password, user.passwordHash)
+
+    if (!passwordMatches) {
+      return reply.code(401).send({
+        message: '이메일 또는 비밀번호가 올바르지 않습니다.',
+      })
+    }
+
+    const { token } = await createSession(user.id)
+
+    return {
+      message: '로그인에 성공했습니다.',
+      token,
+      user: sanitizeUser(user),
+    }
+  })
+
+  app.get('/api/auth/me', async (request, reply) => {
+    const user = await findAuthenticatedUser(request)
+
+    if (!user) {
+      return reply.code(401).send({
+        message: '인증이 필요합니다.',
+      })
+    }
+
+    return {
+      user: sanitizeUser(user),
+    }
+  })
+}