Files
lowkey_backtest/api/routers/data.py
Simon Moisy 0c82c4f366 Implement FastAPI backend and Vue 3 frontend for Lowkey Backtest UI
- Added FastAPI backend with core API endpoints for strategies, backtests, and data management.
- Introduced Vue 3 frontend with a dark theme, enabling users to run backtests, adjust parameters, and compare results.
- Implemented Pydantic schemas for request/response validation and SQLAlchemy models for database interactions.
- Enhanced project structure with dedicated modules for services, routers, and components.
- Updated dependencies in `pyproject.toml` and `frontend/package.json` to include FastAPI, SQLAlchemy, and Vue-related packages.
- Improved `.gitignore` to exclude unnecessary files and directories.
2026-01-14 21:44:04 +08:00

98 lines
3.0 KiB
Python

"""
Data status and symbol information endpoints.
"""
from pathlib import Path
import pandas as pd
from fastapi import APIRouter
from api.models.schemas import DataStatusResponse, SymbolInfo
router = APIRouter()
# Base path for CCXT data
DATA_BASE = Path(__file__).parent.parent.parent / "data" / "ccxt"
def _scan_available_data() -> list[SymbolInfo]:
"""
Scan the data directory for available symbols and timeframes.
Returns list of SymbolInfo with date ranges and row counts.
"""
symbols = []
if not DATA_BASE.exists():
return symbols
# Structure: data/ccxt/{exchange}/{market_type}/{symbol}/{timeframe}.csv
for exchange_dir in DATA_BASE.iterdir():
if not exchange_dir.is_dir():
continue
exchange = exchange_dir.name
for market_dir in exchange_dir.iterdir():
if not market_dir.is_dir():
continue
market_type = market_dir.name
for symbol_dir in market_dir.iterdir():
if not symbol_dir.is_dir():
continue
symbol = symbol_dir.name
# Find all timeframes
timeframes = []
start_date = None
end_date = None
row_count = 0
for csv_file in symbol_dir.glob("*.csv"):
tf = csv_file.stem
timeframes.append(tf)
# Read first and last rows for date range
try:
df = pd.read_csv(csv_file, parse_dates=['timestamp'])
if not df.empty:
row_count = len(df)
start_date = df['timestamp'].min().strftime("%Y-%m-%d")
end_date = df['timestamp'].max().strftime("%Y-%m-%d")
except Exception:
pass
if timeframes:
symbols.append(SymbolInfo(
symbol=symbol,
exchange=exchange,
market_type=market_type,
timeframes=sorted(timeframes),
start_date=start_date,
end_date=end_date,
row_count=row_count,
))
return symbols
@router.get("/symbols", response_model=DataStatusResponse)
async def get_symbols():
"""
Get list of available symbols with their data ranges.
Scans the local data directory for downloaded OHLCV data.
"""
symbols = _scan_available_data()
return DataStatusResponse(symbols=symbols)
@router.get("/data/status", response_model=DataStatusResponse)
async def get_data_status():
"""
Get detailed data inventory status.
Alias for /symbols with additional metadata.
"""
symbols = _scan_available_data()
return DataStatusResponse(symbols=symbols)