"""Listing endpoints – read-only access to listing data with ELO ratings."""

from fastapi import APIRouter, Depends, HTTPException
from sqlalchemy import text
from sqlalchemy.orm import Session

from app.config import settings
from app.database import get_db
from app.queries import LISTING_SELECT, row_to_listing
from app.schemas import ListingResponse

router = APIRouter()


@router.get("/listings", response_model=list[ListingResponse])
def get_listings(
    status: str | None = None,
    db: Session = Depends(get_db),
):
    """Return all listings with their current ELO rating."""
    query = LISTING_SELECT
    params: dict = {"default_elo": settings.DEFAULT_ELO}
    if status and status != "all":
        query += " where l.status = :status"
        params["status"] = status
    query += " order by elo_rating desc"
    result = db.execute(text(query), params)
    return [row_to_listing(row) for row in result]


@router.get("/listings/{global_id}", response_model=ListingResponse)
def get_listing(global_id: str, db: Session = Depends(get_db)):
    """Return a single listing by its global_id."""
    query = LISTING_SELECT + " where l.global_id = :global_id"
    row = db.execute(
        text(query), {"global_id": global_id, "default_elo": settings.DEFAULT_ELO}
    ).first()
    if not row:
        raise HTTPException(status_code=404, detail="Listing not found")
    return row_to_listing(row)