from fastapi import FastAPI, HTTPException, Query
from app.services.stats import get_season_avg, get_last_n, get_splits
from app.utils.player_map import search_players
from app.utils.cache import cache_health

app = FastAPI(title="BetonBLK NBA Stats Service", version="1.0.0")

VALID_STAT_TYPES = {
    "points", "rebounds", "assists", "threes", "blocks",
    "steals", "pra", "turnovers", "minutes", "games_played",
}

VALID_SPLIT_TYPES = {"home_away", "rest_days", "vs_team"}


@app.get("/health")
async def health():
    return {"status": "ok", "cache": "connected" if cache_health() else "disconnected"}


@app.get("/players/search")
async def player_search(name: str = Query(..., min_length=2)):
    results = search_players(name)
    if not results:
        raise HTTPException(status_code=404, detail=f"Player not found: {name}")
    return {"results": results}


@app.get("/stats/season-avg")
async def season_avg(
    player: str = Query(..., min_length=2),
    stat_type: str = Query(None),
    season: str = Query(None),
):
    if stat_type and stat_type not in VALID_STAT_TYPES:
        raise HTTPException(status_code=400, detail=f"Invalid stat_type: {stat_type}")

    try:
        result = get_season_avg(player, stat_type=stat_type, season=season)
    except Exception as e:
        raise HTTPException(status_code=503, detail="NBA stats service unavailable")

    if result is None:
        raise HTTPException(status_code=404, detail=f"Player not found: {player}")

    return result


@app.get("/stats/last-n")
async def last_n(
    player: str = Query(..., min_length=2),
    n: int = Query(10, ge=1, le=30),
    stat_type: str = Query(None),
):
    if stat_type and stat_type not in VALID_STAT_TYPES:
        raise HTTPException(status_code=400, detail=f"Invalid stat_type: {stat_type}")

    try:
        result = get_last_n(player, n=n, stat_type=stat_type)
    except Exception as e:
        raise HTTPException(status_code=503, detail="NBA stats service unavailable")

    if result is None:
        raise HTTPException(status_code=404, detail=f"Player not found: {player}")

    return result


@app.get("/stats/splits")
async def splits(
    player: str = Query(..., min_length=2),
    stat_type: str = Query(...),
    split_type: str = Query(...),
    opponent: str = Query(None),
):
    if stat_type not in VALID_STAT_TYPES:
        raise HTTPException(status_code=400, detail=f"Invalid stat_type: {stat_type}")

    if split_type not in VALID_SPLIT_TYPES:
        raise HTTPException(status_code=400, detail=f"Invalid split_type: {split_type}")

    if split_type == "vs_team" and not opponent:
        raise HTTPException(status_code=400, detail="opponent is required when split_type=vs_team")

    try:
        result = get_splits(player, stat_type, split_type, opponent=opponent)
    except Exception as e:
        raise HTTPException(status_code=503, detail="NBA stats service unavailable")

    if result is None:
        raise HTTPException(status_code=404, detail=f"Player not found: {player}")

    return result