from fastapi import APIRouter, HTTPException, Query, Request

from app.bars.models import Timeframe

router = APIRouter(prefix="/api")


@router.get("/health")
def health():
    return {"status": "ok", "service": "chart"}


@router.get("/status")
def status(request: Request):
    runtime = request.app.state.runtime
    return {
        "stream": runtime.stream.status,
        "source": runtime.stream.source.name,
        "symbol": runtime.stream.symbol,
        "last_bar_t": runtime.stream.last_bar_t,
        "bars_held": runtime.store.counts(),
        "warm": {tf.value: bool(runtime.store.get(tf)) for tf in Timeframe},
    }


@router.get("/bars")
def bars(request: Request, tf: str = "1m", limit: int = Query(500, ge=1, le=5000)):
    try:
        timeframe = Timeframe(tf)
    except ValueError as exc:
        raise HTTPException(400, "Unknown timeframe") from exc
    values = request.app.state.runtime.store.get(timeframe, limit)
    return {"tf": timeframe.value, "bars": [bar.to_dict() for bar in values]}