feat(phase1): add OIDC provider, MongoDB audit, and Docker infrastructure

- Add oidc-provider v9 for OIDC/OAuth2 authentication
- Add MongoDB client service for audit logging (sso_audit database)
- Add audit logger service with retry queue (up to 3 retries, 60s timeout)
- Add audit repository (insert, findByUserId, findByEventType)
- Add OIDC PostgreSQL adapter (grants storage)
- Add Handlebars views (login, register, consent)
- Add OIDC config service (issuer, TTL, cookie keys)
- Add oidc-grants and clients SQL migrations
- Update docker-compose: add PostgreSQL, MongoDB, rename containers
- Update .env.example: add OIDC, MongoDB, PostgreSQL variables
- Update package.json: add oidc-provider, mongodb, express-handlebars
- Update README with OIDC endpoints and architecture diagram
Co-authored-by: Cursor <cursoragent@cursor.com>

.env.example

 # ─────────────────────────────────────────────
 # Server
 # ─────────────────────────────────────────────
-# NODE_ENV: development (relaxed security), staging, production (strict security)
 NODE_ENV=development
 PORT=3001
 BACKEND_URL=http://localhost:3001
-# FRONTEND_URL: list of allowed origins (comma-separated)
 FRONTEND_URL=http://localhost:3000,http://localhost:3001
-PROJECT_NAME=Bekind Backend
+PROJECT_NAME=SSO VietProDev
 PROJECT_VERSION=1.0.0
 
 # ─────────────────────────────────────────────
-# Database (SECRETS - keep in .env)
+# Database - PostgreSQL (SECRETS - keep in .env)
 # ─────────────────────────────────────────────
-DB_HOST=your_db_host
+DB_HOST=localhost
 DB_PORT=5432
-DB_USER=your_db_user
-DB_PASSWORD=your_db_password
-DB_NAME=bekind
+DB_USER=postgres
+DB_PASSWORD=postgres
+DB_NAME=sso
 DB_POOL_MAX=50
 DB_POOL_MIN=5
 DB_POOL_ACQUIRE=30000
 DB_POOL_IDLE=10000
 DB_POOL_EVICT=60000
 
+# ─────────────────────────────────────────────
+# MongoDB - Audit Logging (SECRETS - keep in .env)
+# ─────────────────────────────────────────────
+MONGODB_AUDIT_URL=mongodb://localhost:27017
+MONGODB_AUDIT_DATABASE=sso_audit
+
 # ─────────────────────────────────────────────
 # Redis (SECRETS - keep in .env)
 # ─────────────────────────────────────────────
-REDIS_ENABLED=false
+REDIS_ENABLED=true
 REDIS_HOST=localhost
 REDIS_PORT=6379
 REDIS_PASSWORD=
@@ -54,16 +58,15 @@ REDIS_B_DB=0
 # ─────────────────────────────────────────────
 # Authentication & Security (SECRETS - keep in .env)
 # ─────────────────────────────────────────────
-# JWT secrets: use strong secrets in production (minimum 32 characters)
 JWT_SECRET=change_this_to_strong_secret_min_32_chars
-JWT_SECRET_PREVIOUS=old_secret_1,old_secret_2  # Comma-separated previous secrets for rotation
+JWT_SECRET_PREVIOUS=old_secret_1,old_secret_2
 JWT_REFRESH_SECRET=change_this_to_strong_refresh_secret_min_32_chars
-JWT_REFRESH_SECRET_PREVIOUS=old_refresh_secret_1,old_refresh_secret_2  # Comma-separated previous refresh secrets for rotation
+JWT_REFRESH_SECRET_PREVIOUS=old_refresh_secret_1,old_refresh_secret_2
 JWT_EXPIRES_IN=1h
 JWT_REFRESH_EXPIRES_IN=7d
 TOKEN_ENCRYPTION_KEY=change_this_to_exactly_32_chars
-TOKEN_ENCRYPTION_KEY_PREVIOUS=old_encryption_key_1,old_encryption_key_2  # Comma-separated previous encryption keys for rotation
-DEFAULT_PASSWORD=change_this_default_password_hash
+TOKEN_ENCRYPTION_KEY_PREVIOUS=old_encryption_key_1,old_encryption_key_2
+DEFAULT_PASSWORD=Vietpro@123
 BCRYPT_ROUNDS=12
 PASSWORD_MIN_LENGTH=8
 PASSWORD_MAX_LENGTH=128
@@ -71,13 +74,21 @@ INCLUDE_TOKENS_IN_RESPONSE=false
 SKIP_SENSITIVE_CONFIRM=false
 ENABLE_REGISTER=true
 
+# ─────────────────────────────────────────────
+# OIDC Provider (SECRETS - keep in .env)
+# ─────────────────────────────────────────────
+OIDC_ISSUER=http://localhost:3001
+OIDC_ACCESS_TOKEN_TTL=900
+OIDC_REFRESH_TOKEN_TTL=2592000
+OIDC_COOKIE_KEYS=change_this_cookie_key_at_least_32_chars,another_cookie_key_for_rotation
+
 # ─────────────────────────────────────────────
 # Cookie Settings
 # ─────────────────────────────────────────────
-COOKIE_DOMAIN=.yourdomain.com
+COOKIE_DOMAIN=.localhost
 COOKIE_CROSS_SITE=false
-FORCE_SECURE_COOKIES=true
-DEV_SAMESITE_LAX=false
+FORCE_SECURE_COOKIES=false
+DEV_SAMESITE_LAX=true
 
 # ─────────────────────────────────────────────
 # Upload Settings
@@ -91,14 +102,14 @@ STORAGE_FILES_PATH=/storage/uploads/files
 # ─────────────────────────────────────────────
 # Storage (MinIO/S3)
 # ─────────────────────────────────────────────
-STORAGE_PROVIDER=minio
-PUBLIC_BASE_URL=https://api.yourdomain.com
+STORAGE_PROVIDER=local
+PUBLIC_BASE_URL=http://localhost:3001
 LOCAL_STORAGE_ROOT=./storage/uploads
-MINIO_ENDPOINT=minio
+MINIO_ENDPOINT=localhost
 MINIO_PORT=9000
-MINIO_USE_SSL=true
-MINIO_ACCESS_KEY=your_minio_access_key
-MINIO_SECRET_KEY=your_minio_secret_key
+MINIO_USE_SSL=false
+MINIO_ACCESS_KEY=minioadmin
+MINIO_SECRET_KEY=minioadmin123
 MINIO_BUCKET=uploads
 MINIO_REGION=us-east-1
 
@@ -107,8 +118,8 @@ MINIO_REGION=us-east-1
 # ─────────────────────────────────────────────
 EMAIL_HOST=smtp.example.com
 EMAIL_PORT=587
-EMAIL_USER=your_email@example.com
-EMAIL_PASS=your_email_password
+EMAIL_USER=
+EMAIL_PASS=
 EMAIL_FROM=noreply@yourdomain.com
 
 # ─────────────────────────────────────────────
@@ -177,7 +188,7 @@ CLAM_SCAN_TIMEOUT_MS=15000
 # ─────────────────────────────────────────────
 LOG_LEVEL=info
 LOG_URL=./storage/logs
-LOG_MODE=file
+LOG_MODE=both
 LOG_TIMEOUT=5000
 
 # ─────────────────────────────────────────────

README.md

-# BeKind Backend
+# SSO VietProDev Backend
 
-Backend template built with TypeScript, Node.js, Express.js and PostgreSQL. Features auto-routing,
-Sequelize ORM, JWT authentication, Server-Sent Events (SSE), and OneSignal push notifications.
-
-**Created by Nguyen Thi Nguyet Que**
+Production-ready SSO Authorization Server built with TypeScript, Express.js, and Sequelize — supports **OIDC/OAuth2**, **bcryptjs**, **PostgreSQL**, **MongoDB audit logs**, and **Redis**.
 
 ## Quick Start
 
 ```bash
 pnpm install
-cp .env.example .env          # fill in DB, Redis, JWT values — see docs/setup.md
-psql -U postgres -c "CREATE DATABASE bekind;"
-pnpm migrate
-pnpm dev
+cp .env.example .env          # fill in DB, Redis, JWT, OIDC, MongoDB values
+docker compose up -d          # start PostgreSQL, MongoDB, Redis, MinIO
+pnpm migrate                  # run SQL migrations (001-036)
+pnpm dev                      # start development server
 ```
 
-Server: `http://localhost:3001` — Swagger UI: `http://localhost:3001/swagger/index`
+**Server**: `http://localhost:3001`
+**Swagger UI**: `http://localhost:3001/swagger/index`
+**OIDC Discovery**: `http://localhost:3001/.well-known/openid-configuration`
 
 ---
 
-## Important Notes
-
-⚠️ **Database Schema Changes**: NEVER modify database structure directly (SQL console, GUI tools,
-etc.). Always use migration files in `sql/migrations/`. In production, restrict schema changes via
-PostgreSQL permissions:
+## Architecture
 
-```sql
-REVOKE CREATE ON SCHEMA public FROM app_user;
-REVOKE ALTER ON ALL TABLES IN SCHEMA public FROM app_user;
 ```
-
----
+Browser/App
+    │
+    ├─ REST API (JWT) ──── Express Backend
+    │   └─ /api/v1/* (auto-routed controllers)
+    │
+    └─ OIDC Flow ────────── oidc-provider
+        ├─ /.well-known/openid-configuration
+        ├─ /oauth/authorize
+        ├─ /oauth/token
+        ├─ /oauth/userinfo
+        ├─ /oauth/logout
+        └─ /oidc/interaction/* (login, register, consent)
+
+PostgreSQL ── users, roles, permissions, sessions, clients, oidc_grants
+MongoDB ───── audit_logs
+Redis ─────── rate limiting, caching, sessions
+```
 
 ## Stack
 
 | Layer | Technology |
-| --------- | ------------------------------------- |
+|---|---|
 | Runtime | Node.js 20 + TypeScript |
 | Framework | Express.js + express-automatic-routes |
 | ORM | Sequelize (PostgreSQL) |
+| Auth | OIDC/OAuth2 (oidc-provider) + JWT |
+| Password | bcryptjs |
+| Audit | MongoDB |
 | Cache | Redis |
-| Auth      | JWT + HttpOnly Cookies / Bearer       |
 | Docs | OpenAPI 3.0 (Zod + zod-to-openapi) |
 
 ---
 
+## Important Notes
+
+**Database Schema Changes**: NEVER modify database structure directly. Always use migration files in `sql/migrations/`.
+
+```sql
+REVOKE CREATE ON SCHEMA public FROM app_user;
+REVOKE ALTER ON ALL TABLES IN SCHEMA public FROM app_user;
+```
+
+---
+
 ## Important Commands
 
 ### Development
 
 | Command | Description |
-| ----------------------------- | -------------------------------------- |
+|---|---|
 | `pnpm dev` / `pnpm start:dev` | Run development server with hot reload |
 | `pnpm build` | Build for production |
 | `pnpm start` | Run production server |
+| `pnpm docker:dev` | Run with Docker Compose (full stack) |
 
 ### Database
 
 | Command | Description |
-| -------------- | ----------------------------- |
+|---|---|
 | `pnpm migrate` | Run SQL migrations |
+| `pnpm seed` | Seed default data |
+| `pnpm db:setup` | Run migrations + seeds |
 | `pnpm gen-db` | Generate models from database |
 
 ### Quality
 
 | Command | Description |
-| ----------------------- | -------------------------------------------------------- |
+|---|---|
 | `pnpm lint` | ESLint check |
 | `pnpm type-check` | TypeScript check |
-| `pnpm quality:check`    | Full check — lint + type-check + swagger + test coverage |
+| `pnpm quality:check` | lint + type-check + swagger + coverage |
 | `pnpm swagger:validate` | Generate then validate Swagger spec |
 
 ### Testing
 
 | Command | Description |
-| ----------------------- | --------------------------------------- |
+|---|---|
 | `pnpm test:unit` | Unit tests only |
 | `pnpm test:integration` | Integration tests only |
 | `pnpm test:coverage` | Full suite + coverage report |
-| `pnpm test:critical`    | Critical gate — auth + security (< 30s) |
+| `pnpm test:critical` | Critical gate — auth + security |
+
+---
+
+## OIDC Endpoints
+
+| Endpoint | Description |
+|---|---|
+| `GET /.well-known/openid-configuration` | OIDC Discovery document |
+| `GET /oauth/authorize` | Authorization endpoint |
+| `POST /oauth/token` | Token endpoint |
+| `GET /oauth/userinfo` | UserInfo endpoint |
+| `GET /oauth/jwks` | JWKS endpoint |
+| `POST /oauth/revoke` | Token revocation |
+| `POST /oauth/introspect` | Token introspection |
+| `GET /oidc/interaction/:uid` | Login page |
+| `POST /oidc/interaction/:uid/login` | Submit login |
+| `POST /oidc/interaction/:uid/register` | Register account |
+| `POST /oidc/interaction/:uid/confirm` | Approve consent |
+| `POST /oidc/interaction/:uid/cancel` | Cancel consent |
 
 ---
 
 ## Docs
 
 | Topic | Link |
-| ------------------- | -------------------------------------------------- |
+|---|---|
 | Setup & Environment | [docs/setup.md](docs/setup.md) |
 | New API Development | [docs/api-development.md](docs/api-development.md) |
 | Error Handling | [docs/error-handling.md](docs/error-handling.md) |
@@ -95,5 +137,3 @@ REVOKE ALTER ON ALL TABLES IN SCHEMA public FROM app_user;
 | Testing | [docs/testing.md](docs/testing.md) |
 | Conventions | [docs/conventions.md](docs/conventions.md) |
 | Security | [docs/security.md](docs/security.md) |
-
-<!-- Test -->

docker-compose.yml

 # ─────────────────────────────────────────────
 # Infrastructure services (always-on, no profile)
-# Run independently: docker compose up redis minio -d
+# Run independently: docker compose up -d
 # ─────────────────────────────────────────────
 services:
+  postgres:
+    image: postgres:17-alpine
+    container_name: sso-postgres
+    restart: unless-stopped
+    ports:
+      - '${POSTGRES_PORT:-5432}:5432'
+    environment:
+      POSTGRES_USER: ${DB_USER:-postgres}
+      POSTGRES_PASSWORD: ${DB_PASSWORD:-postgres}
+      POSTGRES_DB: ${DB_NAME:-sso}
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    networks:
+      - sso-network
+    healthcheck:
+      test: ['CMD-SHELL', 'pg_isready -U ${DB_USER:-postgres}']
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
+  mongo:
+    image: mongo:7
+    container_name: sso-mongo
+    restart: unless-stopped
+    ports:
+      - '${MONGO_PORT:-27017}:27017'
+    environment:
+      MONGO_INITDB_DATABASE: ${MONGODB_AUDIT_DATABASE:-sso_audit}
+    volumes:
+      - mongo_data:/data/db
+    networks:
+      - sso-network
+    healthcheck:
+      test: ['CMD', 'mongosh', '--eval', 'db.adminCommand({ping:1})']
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
   redis:
     image: redis:7-alpine
-    container_name: bekind-redis
+    container_name: sso-redis
     restart: unless-stopped
     ports:
       - '${REDIS_PORT:-6379}:6379'
@@ -13,7 +51,7 @@ services:
       - redis_data:/data
     command: redis-server --appendonly yes
     networks:
-      - bekind-network
+      - sso-network
     healthcheck:
       test: ['CMD', 'redis-cli', 'ping']
       interval: 10s
@@ -22,7 +60,7 @@ services:
 
   minio:
     image: minio/minio:RELEASE.2025-04-22T22-12-26Z
-    container_name: bekind-minio
+    container_name: sso-minio
     restart: unless-stopped
     ports:
       - '${MINIO_PORT:-9000}:9000'
@@ -34,7 +72,7 @@ services:
       - minio_data:/data
     command: server /data --console-address ':9001'
     networks:
-      - bekind-network
+      - sso-network
     healthcheck:
       test: ['CMD', 'curl', '-f', 'http://localhost:9000/minio/health/live']
       interval: 30s
@@ -53,22 +91,28 @@ services:
       context: .
       dockerfile: Dockerfile
       target: development
-    container_name: bekind-dev
+    container_name: sso-dev
     restart: unless-stopped
     ports:
       - '3001:3001'
     env_file:
       - .env
     environment:
+      - DB_HOST=postgres
       - REDIS_HOST=redis
       - MINIO_ENDPOINT=minio
+      - MONGODB_AUDIT_URL=mongodb://mongo:27017
       - CHOKIDAR_USEPOLLING=true
     volumes:
       - .:/usr/src/app
       - /usr/src/app/node_modules
     networks:
-      - bekind-network
+      - sso-network
     depends_on:
+      postgres:
+        condition: service_healthy
+      mongo:
+        condition: service_healthy
       redis:
         condition: service_healthy
       minio:
@@ -92,11 +136,17 @@ services:
     env_file:
       - .env.staging
     environment:
+      - DB_HOST=postgres
       - REDIS_HOST=redis
       - MINIO_ENDPOINT=minio
+      - MONGODB_AUDIT_URL=mongodb://mongo:27017
     networks:
-      - bekind-network
+      - sso-network
     depends_on:
+      postgres:
+        condition: service_healthy
+      mongo:
+        condition: service_healthy
       redis:
         condition: service_healthy
       minio:
@@ -120,11 +170,17 @@ services:
     env_file:
       - .env.prod
     environment:
+      - DB_HOST=postgres
       - REDIS_HOST=redis
       - MINIO_ENDPOINT=minio
+      - MONGODB_AUDIT_URL=mongodb://mongo:27017
     networks:
-      - bekind-network
+      - sso-network
     depends_on:
+      postgres:
+        condition: service_healthy
+      mongo:
+        condition: service_healthy
       redis:
         condition: service_healthy
       minio:
@@ -137,9 +193,11 @@ services:
       start_period: 40s
 
 networks:
-  bekind-network:
+  sso-network:
     driver: bridge
 
 volumes:
+  postgres_data:
+  mongo_data:
   redis_data:
   minio_data:

package.json

 {
-  "name": "bekind-backend",
+  "name": "sso-vietprodev-backend",
   "version": "1.0.0",
-  "description": "A Node.js backend template built with TypeScript, Express, and Sequelize, designed for rapid API development with a focus on best practices, security, and scalability.",
+  "description": "SSO Backend built with TypeScript, Express, and Sequelize — supports OIDC/OAuth2, bcryptjs, PostgreSQL multi-pool, and MongoDB audit logging.",
   "main": "dist/index.js",
   "engines": {
     "node": ">=20.1.0",
@@ -80,9 +80,9 @@
     "test:integration": "cross-env NODE_ENV=test jest tests/integration",
     "test:critical": "cross-env NODE_ENV=test jest --testPathPattern=\"(auth|virusScan)\" --no-coverage",
     "-----------------DOCKER------------------": "",
-    "docker:build": "docker build -t bekind-backend .",
-    "docker:build:dev": "docker build --target development -t bekind-backend:dev .",
-    "docker:build:prod": "docker build --target production -t bekind-backend:prod .",
+    "docker:build": "docker build -t sso-vietprodev-backend .",
+    "docker:build:dev": "docker build --target development -t sso-vietprodev-backend:dev .",
+    "docker:build:prod": "docker build --target production -t sso-vietprodev-backend:prod .",
     "docker:infra": "docker compose up redis minio -d",
     "docker:infra:down": "docker compose down redis minio",
     "docker:dev": "docker compose --profile dev up --build",
@@ -108,7 +108,7 @@
     "backend",
     "rest"
   ],
-  "author": "Nguyen Thi Nguyet Que",
+  "author": "VietProDev Team",
   "license": "ISC",
   "dependencies": {
     "@asteasolutions/zod-to-openapi": "^8.5.0",
@@ -123,14 +123,17 @@
     "dotenv": "^17.2.3",
     "express": "^4.22.1",
     "express-automatic-routes": "^1.1.0",
+    "express-handlebars": "^8.0.1",
     "express-validator": "^7.3.1",
     "file-type": "^19.6.0",
     "handlebars": "^4.7.9",
     "helmet": "^8.1.0",
     "ioredis": "^5.4.1",
     "jsonwebtoken": "^9.0.3",
+    "mongodb": "^6.16.0",
     "module-alias": "^2.2.3",
     "multer": "^2.0.2",
+    "oidc-provider": "^9.8.4",
     "mustache": "^4.2.0",
     "mv": "^2.1.1",
     "node-schedule": "^2.1.1",
@@ -164,6 +167,7 @@
     "@types/cookie-parser": "^1.4.10",
     "@types/cors": "^2.8.19",
     "@types/express": "^5.0.6",
+    "@types/express-handlebars": "^3.1.0",
     "@types/ioredis": "^5.0.0",
     "@types/jest": "^29.5.12",
     "@types/jsonwebtoken": "^9.0.10",

sql/migrations/035-add-oidc-schema.sql

+-- Migration: 035-add-oidc-schema.sql
+-- Description: Add OIDC grants and clients tables for oidc-provider
+-- Date: 2026-06-13
+
+-- OIDC Grants table (stores AuthorizationCode, RefreshToken, AccessToken, Interaction references)
+CREATE TABLE IF NOT EXISTS oidc_grants (
+    id VARCHAR(128) NOT NULL,
+    model VARCHAR(64) NOT NULL,
+    payload JSONB NOT NULL,
+    expires_at TIMESTAMPTZ,
+    consumed BOOLEAN DEFAULT FALSE,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    PRIMARY KEY (model, id)
+);
+
+CREATE INDEX IF NOT EXISTS idx_oidc_grants_expires_at ON oidc_grants (expires_at);
+CREATE INDEX IF NOT EXISTS idx_oidc_grants_payload_uid ON oidc_grants ((payload->>'uid'));
+CREATE INDEX IF NOT EXISTS idx_oidc_grants_payload_user_code ON oidc_grants ((payload->>'userCode'));
+CREATE INDEX IF NOT EXISTS idx_oidc_grants_payload_grant_id ON oidc_grants ((payload->>'grantId'));
+
+COMMENT ON TABLE oidc_grants IS 'Stores OIDC grants: AuthorizationCode, RefreshToken, AccessToken, Interaction';

sql/migrations/036-add-clients-schema.sql

+-- Migration: 036-add-clients-schema.sql
+-- Description: Add OIDC clients table for managing authorized applications
+-- Date: 2026-06-13
+
+CREATE TABLE IF NOT EXISTS clients (
+  id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+  app_code TEXT UNIQUE NOT NULL,
+  client_id TEXT UNIQUE NOT NULL,
+  client_secret_hash TEXT,
+  name TEXT NOT NULL,
+  redirect_uris TEXT[] NOT NULL DEFAULT '{}',
+  post_logout_redirect_uris TEXT[] NOT NULL DEFAULT '{}',
+  grant_types TEXT[] NOT NULL DEFAULT '{authorization_code,refresh_token}',
+  response_types TEXT[] NOT NULL DEFAULT '{code}',
+  scopes TEXT[] NOT NULL DEFAULT '{openid,profile,email}',
+  token_endpoint_auth_method TEXT NOT NULL DEFAULT 'none',
+  require_pkce BOOLEAN NOT NULL DEFAULT TRUE,
+  status TEXT NOT NULL DEFAULT 'active',
+  created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+COMMENT ON TABLE clients IS 'OIDC registered applications (clients)';

src/audit/auditEvents.ts

+export const AUDIT_EVENTS = {
+	LOGIN_SUCCESS: 'LOGIN_SUCCESS',
+	LOGIN_FAILED: 'LOGIN_FAILED',
+	LOGOUT: 'LOGOUT',
+	TOKEN_REFRESH: 'TOKEN_REFRESH',
+	TOKEN_VERIFY_FAILED: 'TOKEN_VERIFY_FAILED',
+	PASSWORD_CHANGED: 'PASSWORD_CHANGED',
+	ROLE_CHANGED: 'ROLE_CHANGED',
+	DB_CONNECTION_FAILED: 'DB_CONNECTION_FAILED',
+	DB_FAILOVER_STARTED: 'DB_FAILOVER_STARTED',
+	DB_FAILOVER_SUCCESS: 'DB_FAILOVER_SUCCESS',
+	DB_FAILOVER_FAILED: 'DB_FAILOVER_FAILED',
+	DB_BACKUP_STARTED: 'DB_BACKUP_STARTED',
+	DB_BACKUP_SUCCESS: 'DB_BACKUP_SUCCESS',
+	DB_BACKUP_FAILED: 'DB_BACKUP_FAILED',
+	ADMIN_ACTION: 'ADMIN_ACTION',
+	SESSION_REUSED: 'SESSION_REUSED',
+	SESSION_EXPIRED: 'SESSION_EXPIRED',
+	ACCOUNT_LOCKED: 'ACCOUNT_LOCKED',
+	ACCOUNT_UNLOCKED: 'ACCOUNT_UNLOCKED',
+	REGISTER_SUCCESS: 'REGISTER_SUCCESS',
+	REGISTER_FAILED: 'REGISTER_FAILED',
+	EMAIL_VERIFICATION_SENT: 'EMAIL_VERIFICATION_SENT',
+	EMAIL_VERIFIED: 'EMAIL_VERIFIED',
+} as const;
+
+export type AuditEventType = keyof typeof AUDIT_EVENTS;

src/audit/auditLoggerService.ts

+import { AuditRepository } from './auditRepository';
+import { AuditLog } from './schemas';
+import Logger from '../utils/logger';
+
+interface QueuedAuditEvent {
+	event: Omit<AuditLog, 'createdAt'>;
+	retries: number;
+	firstAttempt: number;
+}
+
+const MAX_RETRIES = 3;
+const RETRY_DELAY_MS = 2000;
+
+export class AuditLoggerService {
+	private readonly repo = new AuditRepository();
+	private readonly queue: QueuedAuditEvent[] = [];
+	private processing = false;
+	private intervalHandle: NodeJS.Timeout | undefined;
+
+	async log(event: Omit<AuditLog, 'createdAt'>): Promise<void> {
+		try {
+			await this.repo.insert({ ...event, createdAt: new Date() });
+		} catch (e: unknown) {
+			Logger.warn(`[audit] write failed (will retry): ${(e as Error).message}`);
+			this.enqueue({ event, retries: 0, firstAttempt: Date.now() });
+		}
+	}
+
+	private enqueue(item: QueuedAuditEvent): void {
+		this.queue.push(item);
+		if (!this.processing) {
+			void this.processQueue();
+		}
+	}
+
+	startQueueProcessor(intervalMs = 30_000): void {
+		this.intervalHandle = setInterval(() => void this.processQueue(), intervalMs);
+	}
+
+	stopQueueProcessor(): void {
+		if (this.intervalHandle) {
+			clearInterval(this.intervalHandle);
+			this.intervalHandle = undefined;
+		}
+	}
+
+	private async processQueue(): Promise<void> {
+		if (this.processing || this.queue.length === 0) return;
+		this.processing = true;
+
+		while (this.queue.length > 0) {
+			const item = this.queue[0]!;
+			const delay = RETRY_DELAY_MS * Math.pow(2, item.retries);
+
+			if (Date.now() - item.firstAttempt > 60_000) {
+				Logger.error(`[audit] event dropped after 60s retries: ${item.event.eventType}`);
+				this.queue.shift();
+				continue;
+			}
+
+			if (item.retries > 0) {
+				await this.sleep(delay);
+			}
+
+			try {
+				await this.repo.insert({ ...item.event, createdAt: new Date() });
+				this.queue.shift();
+			} catch (e: unknown) {
+				item.retries++;
+				if (item.retries >= MAX_RETRIES) {
+					Logger.error(
+						`[audit] permanently failed after ${MAX_RETRIES} retries: ${item.event.eventType}`,
+					);
+					this.queue.shift();
+				} else {
+					Logger.warn(`[audit] retry ${item.retries}/${MAX_RETRIES} failed: ${(e as Error).message}`);
+				}
+			}
+		}
+
+		this.processing = false;
+	}
+
+	private sleep(ms: number): Promise<void> {
+		return new Promise((resolve) => setTimeout(resolve, ms));
+	}
+}

src/audit/auditRepository.ts

+import { MongoClientService, MONGO_COLLECTIONS } from '../database/mongo';
+import { AuditLog } from './schemas';
+
+export class AuditRepository {
+	async insert(log: AuditLog): Promise<void> {
+		const db = await MongoClientService.getDb();
+		await db.collection(MONGO_COLLECTIONS.AUDIT_LOGS).insertOne(log);
+	}
+
+	async findByUserId(userId: string, limit = 100): Promise<AuditLog[]> {
+		const db = await MongoClientService.getDb();
+		const cursor = db
+			.collection(MONGO_COLLECTIONS.AUDIT_LOGS)
+			.find({ userId })
+			.sort({ createdAt: -1 })
+			.limit(limit);
+		const results = await cursor.toArray();
+		return results as unknown as AuditLog[];
+	}
+
+	async findByEventType(eventType: string, limit = 100): Promise<AuditLog[]> {
+		const db = await MongoClientService.getDb();
+		const cursor = db
+			.collection(MONGO_COLLECTIONS.AUDIT_LOGS)
+			.find({ eventType })
+			.sort({ createdAt: -1 })
+			.limit(limit);
+		const results = await cursor.toArray();
+		return results as unknown as AuditLog[];
+	}
+}

src/audit/index.ts

+export { AuditRepository } from './auditRepository';
+export { AuditLoggerService } from './auditLoggerService';
+export { AuditLog } from './schemas';
+export { AUDIT_EVENTS } from './auditEvents';

src/audit/schemas/auditLog.ts

+export interface AuditLog {
+	eventType: string;
+	userId?: string;
+	clientApp?: string;
+	ip?: string;
+	userAgent?: string;
+	status: 'success' | 'failed' | 'info';
+	metadata?: Record<string, unknown>;
+	requestId?: string;
+	createdAt: Date;
+}

src/audit/schemas/index.ts

+export { AuditLog } from './auditLog';

src/config/oidcConfigService.ts

+export class OidcConfigService {
+	get issuer(): string {
+		return process.env.OIDC_ISSUER ?? 'http://localhost:3001';
+	}
+
+	get accessTokenTtl(): number {
+		return Number(process.env.OIDC_ACCESS_TOKEN_TTL ?? 900);
+	}
+
+	get refreshTokenTtl(): number {
+		return Number(process.env.OIDC_REFRESH_TOKEN_TTL ?? 2592000);
+	}
+
+	get cookieKeys(): string[] {
+		const keys = process.env.OIDC_COOKIE_KEYS ?? 'dev-cookie-key-minimum-32-chars';
+		return keys.split(',').filter(Boolean);
+	}
+}

src/database/mongo/collections.ts

+export const MONGO_COLLECTIONS = {
+	AUDIT_LOGS: 'audit_logs',
+} as const;

src/database/mongo/index.ts

+export { MongoClientService } from './mongoClientService';
+export { MONGO_COLLECTIONS } from './collections';

src/database/mongo/mongoClientService.ts

+import { MongoClient, Db } from 'mongodb';
+
+let client: MongoClient | undefined;
+let db: Db | undefined;
+
+export class MongoClientService {
+	private static _url: string | undefined;
+	private static _databaseName: string | undefined;
+
+	static configure(url: string, databaseName: string): void {
+		this._url = url;
+		this._databaseName = databaseName;
+	}
+
+	static getUrl(): string {
+		if (!this._url) {
+			const url = process.env.MONGODB_AUDIT_URL;
+			if (!url) {
+				throw new Error('Missing MONGODB_AUDIT_URL environment variable');
+			}
+			this._url = url;
+		}
+		return this._url;
+	}
+
+	static getDatabaseName(): string {
+		if (!this._databaseName) {
+			this._databaseName = process.env.MONGODB_AUDIT_DATABASE ?? 'sso_audit';
+		}
+		return this._databaseName;
+	}
+
+	static async getClient(): Promise<MongoClient> {
+		if (!client) {
+			client = new MongoClient(this.getUrl());
+			await client.connect();
+		}
+		return client;
+	}
+
+	static async getDb(): Promise<Db> {
+		if (!db) {
+			const c = await this.getClient();
+			db = c.db(this.getDatabaseName());
+		}
+		return db;
+	}
+
+	static async close(): Promise<void> {
+		if (client) {
+			await client.close();
+			client = undefined;
+			db = undefined;
+		}
+	}
+}

src/oidc/oidcAdapterService.ts

+import { Sequelize, QueryTypes } from 'sequelize';
+
+export class OidcAdapterService {
+	constructor(private readonly sequelize: Sequelize) {}
+
+	createAdapter(name: string) {
+		const db = this.sequelize;
+
+		class PgOidcAdapter {
+			async upsert(id: string, payload: unknown, expiresIn: number): Promise<void> {
+				await db.query(
+					`INSERT INTO oidc_grants(model, id, payload, expires_at)
+           VALUES(:name, :id, :payload::jsonb, NOW() + (:expiresIn || ' seconds')::interval)
+           ON CONFLICT(model, id)
+           DO UPDATE SET payload = :payload::jsonb, expires_at = NOW() + (:expiresIn || ' seconds')::interval`,
+					{
+						replacements: { name, id, payload: JSON.stringify(payload), expiresIn },
+						type: QueryTypes.UPDATE,
+					},
+				);
+			}
+
+			async find(id: string): Promise<unknown> {
+				const rows = await db.query<{ payload: unknown }>(
+					`SELECT payload
+           FROM oidc_grants
+           WHERE model = :name
+             AND id = :id
+             AND (expires_at IS NULL OR expires_at > NOW())`,
+					{
+						replacements: { name, id },
+						type: QueryTypes.SELECT,
+					},
+				);
+				return rows[0]?.payload;
+			}
+
+			async findByUserCode(userCode: string): Promise<unknown> {
+				const rows = await db.query<{ payload: unknown }>(
+					`SELECT payload
+           FROM oidc_grants
+           WHERE model = :name
+             AND payload->>'userCode' = :userCode
+             AND (expires_at IS NULL OR expires_at > NOW())`,
+					{
+						replacements: { name, userCode },
+						type: QueryTypes.SELECT,
+					},
+				);
+				return rows[0]?.payload;
+			}
+
+			async findByUid(uid: string): Promise<unknown> {
+				const rows = await db.query<{ payload: unknown }>(
+					`SELECT payload
+           FROM oidc_grants
+           WHERE model = :name
+             AND payload->>'uid' = :uid
+             AND (expires_at IS NULL OR expires_at > NOW())`,
+					{
+						replacements: { name, uid },
+						type: QueryTypes.SELECT,
+					},
+				);
+				return rows[0]?.payload;
+			}
+
+			async destroy(id: string): Promise<void> {
+				await db.query('DELETE FROM oidc_grants WHERE model = :name AND id = :id', {
+					replacements: { name, id },
+					type: QueryTypes.DELETE,
+				});
+			}
+
+			async revokeByGrantId(grantId: string): Promise<void> {
+				await db.query("DELETE FROM oidc_grants WHERE payload->>'grantId' = :grantId", {
+					replacements: { grantId },
+					type: QueryTypes.DELETE,
+				});
+			}
+
+			async consume(id: string): Promise<void> {
+				await db.query(
+					`UPDATE oidc_grants
+           SET payload = jsonb_set(payload, '{consumed}', to_jsonb(EXTRACT(EPOCH FROM NOW())::bigint))
+           WHERE model = :name AND id = :id`,
+					{
+						replacements: { name, id },
+						type: QueryTypes.UPDATE,
+					},
+				);
+			}
+		}
+
+		return new PgOidcAdapter();
+	}
+}

src/oidc/views/consent.hbs

+<!DOCTYPE html>
+<html lang="vi">
+<head>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>Authorize - SSO VietProDev</title>
+  <style>
+    * { box-sizing: border-box; margin: 0; padding: 0; }
+    body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: #f5f5f5; display: flex; align-items: center; justify-content: center; min-height: 100vh; }
+    .consent-card { background: #fff; padding: 40px; border-radius: 12px; box-shadow: 0 2px 12px rgba(0,0,0,0.1); width: 100%; max-width: 400px; text-align: center; }
+    .consent-card h2 { margin-bottom: 8px; color: #1a1a2e; font-size: 22px; }
+    .consent-card p { margin-bottom: 24px; color: #666; font-size: 14px; }
+    .client-name { font-weight: 600; color: #333; }
+    .permissions { background: #f9f9f9; border: 1px solid #eee; border-radius: 8px; padding: 16px; margin-bottom: 24px; text-align: left; }
+    .permissions h3 { font-size: 14px; color: #555; margin-bottom: 12px; }
+    .permissions ul { list-style: none; font-size: 13px; color: #555; }
+    .permissions ul li { padding: 4px 0; }
+    .permissions ul li::before { content: '✓'; color: #4f46e5; margin-right: 8px; }
+    button { width: 100%; padding: 12px; border: none; border-radius: 8px; font-size: 15px; font-weight: 600; cursor: pointer; transition: background 0.2s; margin-bottom: 10px; }
+    .btn-approve { background: #4f46e5; color: #fff; }
+    .btn-approve:hover { background: #4338ca; }
+    .btn-deny { background: #fff; color: #dc2626; border: 1px solid #fecaca; }
+    .btn-deny:hover { background: #fef2f2; }
+  </style>
+</head>
+<body>
+  <div class="consent-card">
+    <h2>Authorize Application</h2>
+    <p><span class="client-name">{{ client }}</span> is requesting access to your account</p>
+    <div class="permissions">
+      <h3>This application will be able to:</h3>
+      <ul>
+        <li>View your profile information</li>
+        <li>Access your email address</li>
+        <li>Manage your authentication sessions</li>
+      </ul>
+    </div>
+    <form method="POST" action="/oidc/interaction/{{ uid }}/confirm">
+      <input type="hidden" name="_csrf" value="{{ csrfToken }}">
+      <button type="submit" class="btn-approve">Authorize</button>
+    </form>
+    <form method="POST" action="/oidc/interaction/{{ uid }}/cancel">
+      <input type="hidden" name="_csrf" value="{{ csrfToken }}">
+      <button type="submit" class="btn-deny">Cancel</button>
+    </form>
+  </div>
+</body>
+</html>

src/oidc/views/login.hbs

+<!DOCTYPE html>
+<html lang="vi">
+<head>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>Login - SSO VietProDev</title>
+  <style>
+    * { box-sizing: border-box; margin: 0; padding: 0; }
+    body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: #f5f5f5; display: flex; align-items: center; justify-content: center; min-height: 100vh; }
+    .login-card { background: #fff; padding: 40px; border-radius: 12px; box-shadow: 0 2px 12px rgba(0,0,0,0.1); width: 100%; max-width: 400px; }
+    .login-card h2 { margin-bottom: 8px; color: #1a1a2e; font-size: 24px; }
+    .login-card p { margin-bottom: 24px; color: #666; font-size: 14px; }
+    .form-group { margin-bottom: 16px; }
+    .form-group label { display: block; margin-bottom: 6px; font-weight: 500; color: #333; font-size: 14px; }
+    .form-group input { width: 100%; padding: 10px 12px; border: 1px solid #ddd; border-radius: 8px; font-size: 14px; transition: border-color 0.2s; }
+    .form-group input:focus { outline: none; border-color: #4f46e5; }
+    .remember-row { display: flex; align-items: center; margin-bottom: 20px; font-size: 14px; }
+    .remember-row input { margin-right: 8px; }
+    button { width: 100%; padding: 12px; background: #4f46e5; color: #fff; border: none; border-radius: 8px; font-size: 15px; font-weight: 600; cursor: pointer; transition: background 0.2s; }
+    button:hover { background: #4338ca; }
+    .error { background: #fef2f2; border: 1px solid #fecaca; color: #dc2626; padding: 10px 12px; border-radius: 8px; margin-bottom: 16px; font-size: 14px; }
+    .footer { margin-top: 20px; text-align: center; font-size: 13px; color: #888; }
+    .footer a { color: #4f46e5; text-decoration: none; }
+  </style>
+</head>
+<body>
+  <div class="login-card">
+    <h2>Sign In</h2>
+    <p>Sign in to access <strong>{{ client }}</strong></p>
+    {{#if error}}<div class="error">{{ error }}</div>{{/if}}
+    <form method="POST" action="/oidc/interaction/{{ uid }}/login">
+      <input type="hidden" name="_csrf" value="{{ csrfToken }}">
+      <div class="form-group">
+        <label for="email">Email</label>
+        <input type="email" id="email" name="email" required autocomplete="email" placeholder="you@example.com">
+      </div>
+      <div class="form-group">
+        <label for="password">Password</label>
+        <input type="password" id="password" name="password" required autocomplete="current-password" placeholder="Your password">
+      </div>
+      <div class="remember-row">
+        <input type="checkbox" id="remember" name="remember" value="1">
+        <label for="remember" style="margin-bottom:0; font-weight:normal;">Remember me</label>
+      </div>
+      <button type="submit">Sign In</button>
+    </form>
+    <div class="footer">
+      <a href="/oidc/interaction/{{ uid }}/register">Create an account</a>
+    </div>
+  </div>
+</body>
+</html>

src/oidc/views/register.hbs

+<!DOCTYPE html>
+<html lang="vi">
+<head>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>Register - SSO VietProDev</title>
+  <style>
+    * { box-sizing: border-box; margin: 0; padding: 0; }
+    body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: #f5f5f5; display: flex; align-items: center; justify-content: center; min-height: 100vh; }
+    .register-card { background: #fff; padding: 40px; border-radius: 12px; box-shadow: 0 2px 12px rgba(0,0,0,0.1); width: 100%; max-width: 400px; }
+    .register-card h2 { margin-bottom: 8px; color: #1a1a2e; font-size: 24px; }
+    .register-card p { margin-bottom: 24px; color: #666; font-size: 14px; }
+    .form-group { margin-bottom: 16px; }
+    .form-group label { display: block; margin-bottom: 6px; font-weight: 500; color: #333; font-size: 14px; }
+    .form-group input { width: 100%; padding: 10px 12px; border: 1px solid #ddd; border-radius: 8px; font-size: 14px; transition: border-color 0.2s; }
+    .form-group input:focus { outline: none; border-color: #4f46e5; }
+    .password-hint { font-size: 12px; color: #888; margin-top: 4px; }
+    button { width: 100%; padding: 12px; background: #4f46e5; color: #fff; border: none; border-radius: 8px; font-size: 15px; font-weight: 600; cursor: pointer; transition: background 0.2s; }
+    button:hover { background: #4338ca; }
+    .error { background: #fef2f2; border: 1px solid #fecaca; color: #dc2626; padding: 10px 12px; border-radius: 8px; margin-bottom: 16px; font-size: 14px; }
+    .footer { margin-top: 20px; text-align: center; font-size: 13px; color: #888; }
+    .footer a { color: #4f46e5; text-decoration: none; }
+  </style>
+</head>
+<body>
+  <div class="register-card">
+    <h2>Create Account</h2>
+    <p>Register to access the application</p>
+    {{#if error}}<div class="error">{{ error }}</div>{{/if}}
+    <form method="POST" action="/oidc/interaction/{{ uid }}/register">
+      <input type="hidden" name="_csrf" value="{{ csrfToken }}">
+      <div class="form-group">
+        <label for="email">Email</label>
+        <input type="email" id="email" name="email" required autocomplete="email" placeholder="you@example.com">
+      </div>
+      <div class="form-group">
+        <label for="username">Username (optional)</label>
+        <input type="text" id="username" name="username" autocomplete="username" placeholder="your_username">
+      </div>
+      <div class="form-group">
+        <label for="password">Password</label>
+        <input type="password" id="password" name="password" required autocomplete="new-password" placeholder="At least 12 characters">
+        <p class="password-hint">Minimum 12 characters</p>
+      </div>
+      <div class="form-group">
+        <label for="confirmPassword">Confirm Password</label>
+        <input type="password" id="confirmPassword" name="confirmPassword" required autocomplete="new-password" placeholder="Confirm your password">
+      </div>
+      <button type="submit">Create Account</button>
+    </form>
+    <div class="footer">
+      Already have an account? <a href="/oidc/interaction/{{ uid }}">Sign in</a>
+    </div>
+  </div>
+</body>
+</html>