---
title: Lin - LinkedIn Community Manager
sdk: docker
app_file: start_app.py
license: mit
---

# Lin - Community Manager Assistant for LinkedIn

A comprehensive community management tool that helps you automate and streamline your LinkedIn activities.

## 🚀 Quick Start

### Prerequisites

- Node.js (v16 or higher)
- Python (v3.8 or higher)
- npm (v8 or higher)

### Installation

**Option 1: Using the root package.json (Recommended)**

```bash
# Clone the repository
git clone <repository-url>
cd Lin

# Install all dependencies
npm install

# Setup the project
npm run setup

# Start both frontend and backend
npm start
```

**Option 2: Manual installation**

```bash
# Install frontend dependencies
cd frontend
npm install

# Install backend dependencies
cd ../backend
pip install -r requirements.txt

# Return to root directory
cd ..
```

## 📁 Project Structure

```
Lin/
├── package.json              # Root package.json with combined scripts
├── frontend/                 # React frontend application
│   ├── package.json          # Frontend-specific dependencies
│   ├── src/                  # React source code
│   ├── public/               # Static assets
│   └── build/                # Build output
├── backend/                  # Flask backend API
│   ├── app.py                # Main application file
│   ├── requirements.txt      # Python dependencies
│   ├── api/                  # API endpoints
│   ├── models/               # Data models
│   ├── services/             # Business logic
│   └── utils/                # Utility functions
└── README.md                 # This file
```

## 🛠️ Development

### Available Scripts

From the project root directory, you can use the following commands:

#### Installation
- `npm install` - Install root dependencies
- `npm run install:frontend` - Install frontend dependencies
- `npm run install:backend` - Install backend dependencies
- `npm run install:all` - Install all dependencies
- `npm run install:all:win` - Install all dependencies (Windows-specific)

#### Development Servers
- `npm run dev:frontend` - Start frontend development server
- `npm run dev:backend` - Start backend development server
- `npm run dev:all` - Start both servers concurrently
- `npm run start` - Alias for `npm run dev:all`
- `npm run start:frontend` - Start frontend only
- `npm run start:backend` - Start backend only

#### Build & Test
- `npm run build` - Build frontend for production
- `npm run build:prod` - Build frontend for production
- `npm run preview` - Preview production build
- `npm run test` - Run frontend tests
- `npm run test:backend` - Run backend tests
- `npm run lint` - Run ESLint
- `npm run lint:fix` - Fix ESLint issues

#### Setup & Maintenance
- `npm run setup` - Full setup (install + build)
- `npm run setup:win` - Full setup (Windows-specific)
- `npm run clean` - Clean build artifacts
- `npm run reset` - Reset project (clean + install)

### Directory Navigation

**Important:** Most npm commands should be run from the project root directory where the main `package.json` is located.

#### Command Prompt (Windows)
```cmd
# Navigate to project root (if not already there)
cd C:\Users\YourUser\Documents\Project\Lin_re\Lin

# Install dependencies
npm install

# Start development servers
npm start

# Or start individually
npm run dev:frontend
npm run dev:backend
```

#### PowerShell (Windows)
```powershell
# Navigate to project root (if not already there)
cd C:\Users\YourUser\Documents\Project\Lin_re\Lin

# Install dependencies
npm install

# Start development servers
npm start

# Or start individually
npm run dev:frontend
npm run dev:backend
```

#### Linux/macOS
```bash
# Navigate to project root (if not already there)
cd /path/to/your/project/Lin

# Install dependencies
npm install

# Start development servers
npm start

# Or start individually
npm run dev:frontend
npm run dev:backend
```

## 🔧 Environment Setup

### Frontend Environment

```bash
# Copy environment file
cd frontend
cp .env.example .env.local

# Edit environment variables
# Open .env.local and add your required values
```

### Backend Environment

```bash
# Copy environment file
cd backend
cp .env.example .env

# Edit environment variables
# Open .env and add your required values
```

### Required Environment Variables

**Frontend (.env.local)**
- `REACT_APP_API_URL` - Backend API URL (default: http://localhost:5000)

**Backend (.env)**
- `SUPABASE_URL` - Your Supabase project URL
- `SUPABASE_KEY` - Your Supabase API key
- `CLIENT_ID` - LinkedIn OAuth client ID
- `CLIENT_SECRET` - LinkedIn OAuth client secret
- `REDIRECT_URL` - LinkedIn OAuth redirect URL
- `HUGGING_KEY` - Hugging Face API key
- `JWT_SECRET_KEY` - Secret key for JWT token generation
- `SECRET_KEY` - Flask secret key
- `DEBUG` - Debug mode (True/False)
- `SCHEDULER_ENABLED` - Enable/disable task scheduler (True/False)
- `PORT` - Port to run the application on (default: 5000)

## 🌐 Development URLs

- **Frontend**: http://localhost:3000
- **Backend API**: http://localhost:5000

## 🔍 Troubleshooting

### Common Issues

#### 1. ENOENT Error: no such file or directory
**Problem**: Running npm commands from the wrong directory
**Solution**: Always run npm commands from the project root directory where `package.json` is located

```bash
# Check if you're in the right directory
ls package.json

# If not, navigate to the root directory
cd /path/to/project/Lin
```

#### 2. Port Already in Use
**Problem**: Port 3000 or 5000 is already in use
**Solution**: Change ports or stop conflicting services

**Command Prompt:**
```cmd
# Check what's using port 3000
netstat -ano | findstr :3000

# Check what's using port 5000
netstat -ano | findstr :5000
```

**PowerShell:**
```powershell
# Check what's using port 3000
netstat -ano | Select-String ":3000"

# Check what's using port 5000
netstat -ano | Select-String ":5000"
```

#### 3. Python/Node.js Not Recognized
**Problem**: Python or Node.js commands not found
**Solution**: Ensure Python and Node.js are added to your system PATH

**Windows:**
1. Open System Properties > Environment Variables
2. Add Python and Node.js installation directories to PATH
3. Restart your terminal

#### 4. Permission Issues
**Problem**: Permission denied errors
**Solution**: Run terminal as Administrator or check file permissions

### Windows-Specific Issues

#### File Copy Commands
**Command Prompt:**
```cmd
# Copy frontend environment file
copy frontend\.env.example frontend\.env.local

# Copy backend environment file
copy backend\.env.example backend\.env
```

**PowerShell:**
```powershell
# Copy frontend environment file
Copy-Item frontend\.env.example -Destination frontend\.env.local

# Copy backend environment file
Copy-Item backend\.env.example -Destination backend\.env
```

#### Python Installation Issues
```cmd
# If pip fails, try using python -m pip
cd backend
python -m pip install -r requirements.txt
```

## 📚 Additional Resources

- [Windows Compatibility Guide](./test_windows_compatibility.md)
- [Backend API Documentation](./backend/README.md)
- [Frontend Development Guide](./frontend/README.md)

## 🤝 Contributing

1. Fork the repository
2. Create a feature branch (`git checkout -b feature/amazing-feature`)
3. Commit your changes (`git commit -m 'Add amazing feature'`)
4. Push to the branch (`git push origin feature/amazing-feature`)
5. Open a Pull Request

## 📄 License

This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.

## 🙏 Acknowledgments

- Built with React, Flask, and Tailwind CSS
- Powered by Supabase for authentication and database
- LinkedIn API integration for social media management
- Hugging Face for AI-powered content generation