# AccManager Backend Setup Guide

## 📋 Database Information

**Server:** 172.20.235.176  
**Database:** AccManager  
**User:** sa  
**Password:** robotics@2020  

## 📊 Database Structure

### Tables Created

#### 1. **Users** - Quản lý người dùng
- `UserId` (INT) - Primary Key
- `Username` (NVARCHAR) - Unique
- `Password` (NVARCHAR)
- `Email` (NVARCHAR)
- `FullName` (NVARCHAR)
- `Role` (NVARCHAR) - admin, user, viewer
- `Status` (NVARCHAR) - Active/Inactive
- `CreatedDate` (DATETIME)
- `LastLogin` (DATETIME)
- `IsActive` (BIT)

#### 2. **Applications** - Danh sách ứng dụng
- `AppId` (INT) - Primary Key
- `Name` (NVARCHAR)
- `Type` (NVARCHAR) - Cloud, VCS, Collaboration, Infra
- `Status` (NVARCHAR) - online/offline
- `Icon` (NVARCHAR)
- `Description` (NVARCHAR)
- `CreatedDate` (DATETIME)
- `UpdatedDate` (DATETIME)

#### 3. **Accounts** - Tài khoản ứng dụng
- `AccountId` (INT) - Primary Key
- `UserId` (INT) - Foreign Key
- `AppId` (INT) - Foreign Key
- `AccountUsername` (NVARCHAR)
- `AccountPassword` (NVARCHAR)
- `Email` (NVARCHAR)
- `AccessLevel` (NVARCHAR)
- `Status` (NVARCHAR)
- `Notes` (NVARCHAR)
- `CreatedDate` (DATETIME)
- `UpdatedDate` (DATETIME)

#### 4. **AuditLog** - Nhật ký hoạt động
- `LogId` (INT) - Primary Key
- `UserId` (INT) - Foreign Key
- `Action` (NVARCHAR) - INSERT, UPDATE, DELETE
- `TableName` (NVARCHAR)
- `RecordId` (INT)
- `OldValue` (NVARCHAR)
- `NewValue` (NVARCHAR)
- `Timestamp` (DATETIME)

## 🔐 Default Admin Account

**Username:** admin  
**Password:** admin  
**Role:** admin  
**Status:** Active  

## 🚀 Installation & Setup

### 1. Install Node.js Dependencies

```bash
npm install
```

### 2. Run Backend Server

```bash
npm start
```

Server sẽ chạy tại: **http://localhost:3000**

### 3. Kiểm tra Database Connection

```bash
curl http://localhost:3000/api/health
```

Response:
```json
{
  "status": "OK",
  "database": "Connected"
}
```

## 📡 API Endpoints

### Authentication

#### Login
```bash
POST /api/auth/login
Content-Type: application/json

{
  "username": "admin",
  "password": "admin"
}
```

### Users

#### Get All Users
```bash
GET /api/users
```

#### Get User Details
```bash
GET /api/users/:id
```

#### Create New User
```bash
POST /api/users
Content-Type: application/json

{
  "username": "newuser",
  "password": "password123",
  "email": "user@example.com",
  "fullname": "Full Name",
  "role": "user"
}
```

### Applications

#### Get All Applications
```bash
GET /api/applications
```

#### Create Application
```bash
POST /api/applications
Content-Type: application/json

{
  "name": "New App",
  "type": "Cloud",
  "status": "online",
  "icon": "cloud",
  "description": "Application description"
}
```

### Accounts

#### Get User Accounts
```bash
GET /api/accounts/user/:userId
```

#### Create Account
```bash
POST /api/accounts
Content-Type: application/json

{
  "userId": 1,
  "appId": 1,
  "accountUsername": "account_user",
  "accountPassword": "account_pass",
  "email": "account@example.com",
  "accessLevel": "Admin",
  "notes": "Account notes"
}
```

### Database Info

#### Get Database Statistics
```bash
GET /api/database/info
```

Response:
```json
{
  "success": true,
  "database": "AccManager",
  "server": "172.20.235.176",
  "tables": [
    {
      "TableName": "Accounts",
      "ColumnCount": 11
    },
    {
      "TableName": "Applications",
      "ColumnCount": 7
    },
    {
      "TableName": "AuditLog",
      "ColumnCount": 8
    },
    {
      "TableName": "Users",
      "ColumnCount": 10
    }
  ],
  "statistics": {
    "users": 1,
    "applications": 4,
    "accounts": 0
  }
}
```

## 🔧 Frontend Integration

Update frontend API calls to use the backend server:

```javascript
// Change from localStorage to API calls
const API_URL = 'http://localhost:3000/api';

// Example: Login
async function login(username, password) {
  const response = await fetch(`${API_URL}/auth/login`, {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify({ username, password })
  });
  return response.json();
}

// Example: Get user accounts
async function getAccounts(userId) {
  const response = await fetch(`${API_URL}/accounts/user/${userId}`);
  return response.json();
}
```

## 📝 Initial Data Created

### Users
- **admin** (admin role)

### Applications
- AWS (Cloud) - online
- GitHub (VCS) - online
- Google Workspace (Collaboration) - online
- Nginx Proxy (Infra) - offline

## 🐛 Troubleshooting

### Connection Error
```
Database connection failed: Error
```
**Solution:**
- Kiểm tra SQL Server đang chạy
- Kiểm tra network connectivity đến 172.20.235.176
- Kiểm tra username/password đúng
- Kiểm tra SQL Server Authentication được enable

### Port Already in Use
```
listen EADDRINUSE: address already in use :::3000
```
**Solution:**
```bash
# Change port in .env
PORT=3001
```

### MSSQL Module Not Found
```bash
npm install mssql
```

## 📚 References

- [ExpressJS Documentation](https://expressjs.com/)
- [MSSQL Package](https://github.com/tediousjs/node-mssql)
- [SQL Server Documentation](https://docs.microsoft.com/en-us/sql/)

---

**Status:** ✓ Database created, ✓ Tables created, ✓ Admin user created, ✓ Backend ready