"""Billing Service — FastAPI application.

Owns: Stripe checkout/webhook, subscription management, tier feature matrix,
quota enforcement.

Downstream services query this service (or read the user's tier from
the X-User-Tier header injected by Traefik) for billing decisions.
The webhook endpoint is exposed WITHOUT ForwardAuth so Stripe can reach it.
"""

from __future__ import annotations

import logging
import sys
from contextlib import asynccontextmanager
from pathlib import Path
from typing import AsyncGenerator

# Ensure the repo root is on sys.path so "shared" is importable in local dev.
_repo_root = str(Path(__file__).resolve().parents[3])
if _repo_root not in sys.path:
    sys.path.insert(0, _repo_root)

from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware

from app.routes import router

logger = logging.getLogger(__name__)


@asynccontextmanager
async def lifespan(app: FastAPI) -> AsyncGenerator[None, None]:
    logger.info("billing: service started")
    yield
    logger.info("billing: service stopped")


app = FastAPI(title="Adiuva Billing Service", lifespan=lifespan)

app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],
    allow_methods=["GET", "POST", "DELETE"],
    allow_headers=["*"],
)

app.include_router(router)


@app.get("/health")
async def health() -> dict[str, str]:
    return {"status": "ok", "service": "billing"}