"""
BantayCam — Integrated License Plate & Face Recognition for Philippine CCTV
FastAPI Application Entry Point
"""
from contextlib import asynccontextmanager
import logging

from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from fastapi.staticfiles import StaticFiles
from pathlib import Path

from app.core.config import settings
from app.core.database import init_db
from app.services.vehicle_detector import vehicle_detector
from app.services.face_service import face_service
from app.services.stream_manager import StreamManager
from app.api import cameras, vehicles, persons

logging.basicConfig(
    level=logging.INFO,
    format="%(asctime)s [%(levelname)s] %(name)s: %(message)s"
)
logger = logging.getLogger(__name__)


@asynccontextmanager
async def lifespan(app: FastAPI):
    """Startup and shutdown events."""
    logger.info("🚀 BantayCam starting up...")

    # Init database
    await init_db()
    logger.info("✅ Database initialized")

    # Load AI models
    logger.info("Loading AI models (this may take a moment)...")
    vehicle_detector.load()
    face_service.load()
    logger.info("✅ AI models loaded")

    # Ensure snapshot storage exists
    Path(settings.STORAGE_PATH).mkdir(parents=True, exist_ok=True)

    yield

    # Shutdown
    logger.info("Shutting down streams...")
    await StreamManager.get().stop_all()
    logger.info("👋 BantayCam shut down")


app = FastAPI(
    title="BantayCam",
    description="Integrated License Plate & Face Recognition for Philippine CCTV Infrastructure",
    version=settings.APP_VERSION,
    lifespan=lifespan,
)

app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],  # Tighten in production
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

# API routes
app.include_router(cameras.router, prefix="/api/v1")
app.include_router(vehicles.router, prefix="/api/v1")
app.include_router(persons.router, prefix="/api/v1")

# Serve snapshots as static files
snapshot_dir = Path(settings.STORAGE_PATH)
snapshot_dir.mkdir(parents=True, exist_ok=True)
app.mount("/snapshots", StaticFiles(directory=str(snapshot_dir)), name="snapshots")


@app.get("/")
async def root():
    return {
        "app": settings.APP_NAME,
        "version": settings.APP_VERSION,
        "status": "running",
        "docs": "/docs",
    }


@app.get("/health")
async def health():
    return {"status": "ok"}