from contextlib import asynccontextmanager
from fastapi import FastAPI
from starlette.middleware.cors import CORSMiddleware
from apscheduler.schedulers.asyncio import AsyncIOScheduler

from app.core.config import settings
from app.api.eta import router as eta_router
from app.api.auth import router as auth_router
from app.api.addresses import router as addresses_router
from app.api.colonias import router as colonias_router
from app.api.simulation import router as simulation_router
from app.services import simulation, notifications

scheduler = AsyncIOScheduler()


@asynccontextmanager
async def lifespan(app: FastAPI):
    print("Iniciando aplicación: Backend Sistema de Recolección...")

    simulation.load_data()
    simulation.start_simulation_state()

    notifications.init_firebase(settings.FIREBASE_CREDENTIALS_PATH)

    scheduler.add_job(
        simulation.tick,
        "interval",
        seconds=settings.SIMULATION_TICK_SECONDS,
        id="simulation_tick",
    )
    scheduler.start()
    print(f"Simulador iniciado. Tick cada {settings.SIMULATION_TICK_SECONDS}s.")

    yield

    print("Apagando aplicación y deteniendo simulador...")
    scheduler.shutdown()


app = FastAPI(
    title="API — Recolección Inteligente y Privada",
    description="Backend para el sistema de recolección de residuos con privacidad por diseño.",
    version="1.0.0",
    lifespan=lifespan,
)

# CORS — necesario para el simulador web y el cliente Flutter
app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],  # En producción limitar a dominios reales
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

app.include_router(auth_router)
app.include_router(addresses_router)
app.include_router(eta_router)
app.include_router(colonias_router)
app.include_router(simulation_router)


@app.get("/")
def read_root():
    return {
        "status": "ok",
        "message": "Backend operativo. Regla innegociable #1: NUNCA se devuelven coordenadas al ciudadano.",
    }


@app.get("/health")
def health_check():
    return {"status": "healthy"}