0df8547d96
Issue 1: Only update lastSignalDate when signal type changes (BUY→SELL or SELL→BUY) - Modified clearIndicatorCaches() to accept clearSignalState parameter - When new candle completes: only clear cachedResults/cachedMeta (not signal state) - When timeframe changes: clear everything including signal tracking - This preserves signal change history across multiple candles Issue 2: Indicator lines not updating when new candles arrive - Added updateIndicatorCandles() function to update existing series - Instead of removing and recreating series, now uses .setData() to update - Called when new candle is detected to update indicator lines - Chart renders correctly with new data after each candle completion Both issues now resolved: 1. Shows last crossover date only when signal actually changes 2. Indicator lines update in real-time when new candles complete
BTC Trading Dashboard
A Bitcoin trading dashboard with FastAPI backend, PostgreSQL database, and technical analysis features.
Architecture
- Backend: FastAPI (Python)
- Frontend: HTML/JS dashboard with lightweight-charts
- Database: PostgreSQL (connects to NAS)
- Features:
- Real-time candle data
- Technical indicators (SMA, EMA, RSI, MACD, Bollinger Bands, etc.)
- Trading strategy simulation
- Backtesting
Prerequisites
- Python 3.9+
- PostgreSQL database (on NAS at 20.20.20.20:5433)
Setup
1. Virtual Environment
python -m venv venv
2. Install Dependencies
venv\Scripts\activate
pip install -r requirements.txt
3. Configure Database
Edit .env file:
DB_HOST=20.20.20.20
DB_PORT=5433
DB_NAME=btc_data
DB_USER=btc_bot
DB_PASSWORD=your_password
4. Test Database Connection
python test_db.py
Running the Server
Quick Start
Windows:
start_dev.cmd
Linux/Mac:
chmod +x start_dev.sh
./start_dev.sh
Manual Start
venv\Scripts\activate
uvicorn src.api.server:app --reload --host 0.0.0.0 --port 8000
Access the Application
Once the server is running:
- Dashboard: http://localhost:8000/dashboard
- API Docs: http://localhost:8000/docs
- Health Check: http://localhost:8000/api/v1/health
Project Structure
.
├── config/
│ └── data_config.yaml # Data collection configuration
├── src/
│ ├── api/
│ │ ├── server.py # FastAPI application
│ │ └── dashboard/ # Frontend static files
│ ├── data_collector/ # Data collection modules
│ │ ├── main.py # Data collector service
│ │ ├── database.py # Database manager
│ │ ├── websocket_client.py # WebSocket client
│ │ ├── indicator_engine.py # Technical indicators
│ │ ├── brain.py # Trading logic
│ │ └── backtester.py # Backtesting engine
│ └── strategies/ # Trading strategies
│ ├── base.py # Base strategy class
│ └── ma_strategy.py # Moving average strategy
├── .env # Environment variables
├── requirements.txt # Python dependencies
└── test_db.py # Database connection test
API Endpoints
| Endpoint | Method | Description |
|---|---|---|
/ |
GET | API info |
/api/v1/health |
GET | System health check |
/api/v1/candles |
GET | Get candle data |
/api/v1/strategies |
GET | List available strategies |
/api/v1/ta |
GET | Technical analysis |
/api/v1/stats |
GET | Trading statistics |
/api/v1/backtests |
POST | Trigger backtest |
Development Tips
- Auto-reload: The server reloads automatically when Python files change
- Database changes: Restart server to pick up schema changes
- Frontend: Edit HTML/JS in
src/api/dashboard/static/ - Indicators: Add new indicators in
src/api/dashboard/static/js/indicators/ - Strategies: Create strategies in
src/strategies/
Troubleshooting
Port 8000 already in use
netstat -ano | findstr :8000
taskkill /PID <PID> /F
Database connection failed
- Check NAS is reachable:
ping 20.20.20.20 - Verify PostgreSQL is running on NAS
- Check
.envcredentials - Run
python test_db.pyfor diagnosis
No data in dashboard
- Verify data collector is running on NAS
- Check database has candles table
- Use API docs to query data manually