"""S/R Levels router — support/resistance detection endpoints."""

from fastapi import APIRouter, Depends, Query
from sqlalchemy.ext.asyncio import AsyncSession

from app.dependencies import get_db, require_access
from app.schemas.common import APIEnvelope
from app.schemas.sr_level import SRLevelResponse, SRLevelResult
from app.services.sr_service import get_sr_levels

router = APIRouter(tags=["sr-levels"])


@router.get("/sr-levels/{symbol}", response_model=APIEnvelope)
async def read_sr_levels(
    symbol: str,
    tolerance: float = Query(0.005, ge=0, le=0.1, description="Merge tolerance (default 0.5%)"),
    _user=Depends(require_access),
    db: AsyncSession = Depends(get_db),
) -> APIEnvelope:
    """Get support/resistance levels for a symbol, sorted by strength descending."""
    levels = await get_sr_levels(db, symbol, tolerance)
    data = SRLevelResponse(
        symbol=symbol.upper(),
        levels=[
            SRLevelResult(
                id=lvl.id,
                price_level=lvl.price_level,
                type=lvl.type,
                strength=lvl.strength,
                detection_method=lvl.detection_method,
                created_at=lvl.created_at,
            )
            for lvl in levels
        ],
        count=len(levels),
    )
    return APIEnvelope(status="success", data=data.model_dump())