app/api/routes/watchlist.py

"""API routes for watchlist and FR history."""
from fastapi import APIRouter, HTTPException

from app.services import get_watchlist_service, get_history_service
from app.models import (
    WatchlistResponse, 
    AddWatchlistRequest, 
    WatchlistItem,
    FRHistoryResponse,
)

router = APIRouter(prefix="/watchlist", tags=["Watchlist"])


@router.get("", response_model=WatchlistResponse)
async def get_watchlist():
    """
    Get all watched coins with current FR data.
    """
    service = get_watchlist_service()
    data = await service.get_watchlist()
    
    return WatchlistResponse(
        success=True,
        data=data,
        count=len(data),
    )


@router.post("", response_model=WatchlistItem)
async def add_to_watchlist(request: AddWatchlistRequest):
    """
    Add a coin to watchlist.
    
    - **symbol**: Trading pair (e.g., BTC, BTC_USDT, BTCUSDT)
    - **notes**: Optional notes about this coin
    """
    service = get_watchlist_service()
    try:
        item = await service.add_to_watchlist(request.symbol, request.notes)
        return item
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))


@router.delete("/{symbol}")
async def remove_from_watchlist(symbol: str):
    """
    Remove a coin from watchlist.
    """
    service = get_watchlist_service()
    removed = await service.remove_from_watchlist(symbol)
    
    if not removed:
        raise HTTPException(status_code=404, detail="Symbol not found in watchlist")
    
    return {"success": True, "message": f"Removed {symbol} from watchlist"}


@router.get("/history/{symbol}", response_model=FRHistoryResponse)
async def get_fr_history(symbol: str, hours: int = 24):
    """
    Get FR history for a watched coin.
    
    - **symbol**: Trading pair symbol
    - **hours**: Number of hours to look back (default: 24)
    """
    service = get_history_service()
    data = await service.get_history(symbol, hours=hours)
    
    return FRHistoryResponse(
        success=True,
        symbol=symbol.upper(),
        data=data,
        count=len(data),
    )