import asyncio
import logging
from contextlib import asynccontextmanager
from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware

from core.config import settings
from core.database import init_db, AsyncSessionLocal
from services.mqtt_subscriber import run_subscriber
from services.seed import run_all_seeds
from api.routes import (
    health, sites, readings, alarms, ws, assets,
    power, env, reports, capacity,
    generator, fire, cooling, leak, network, maintenance, floor_layout,
    scenarios, settings as settings_router,
)

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


@asynccontextmanager
async def lifespan(app: FastAPI):
    logger.info(f"Starting {settings.APP_NAME}")
    await init_db()
    async with AsyncSessionLocal() as session:
        await run_all_seeds(session)
    # Start MQTT subscriber as a background task
    task = asyncio.create_task(run_subscriber())
    yield
    task.cancel()
    try:
        await task
    except asyncio.CancelledError:
        pass
    logger.info("Shutdown complete")


app = FastAPI(
    title=settings.APP_NAME,
    version="0.2.0",
    docs_url="/docs",
    redoc_url="/redoc",
    lifespan=lifespan,
)

app.add_middleware(
    CORSMiddleware,
    allow_origins=settings.CORS_ORIGINS,
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

app.include_router(health.router,    prefix="/api",          tags=["health"])
app.include_router(sites.router,     prefix="/api/sites",    tags=["sites"])
app.include_router(readings.router,  prefix="/api/readings", tags=["readings"])
app.include_router(alarms.router,    prefix="/api/alarms",   tags=["alarms"])
app.include_router(ws.router,        prefix="/api",          tags=["websocket"])
app.include_router(assets.router,    prefix="/api/assets",   tags=["assets"])
app.include_router(power.router,     prefix="/api/power",    tags=["power"])
app.include_router(env.router,       prefix="/api/env",      tags=["env"])
app.include_router(reports.router,   prefix="/api/reports",   tags=["reports"])
app.include_router(capacity.router,  prefix="/api/capacity",  tags=["capacity"])
app.include_router(generator.router, prefix="/api/generator", tags=["generator"])
app.include_router(fire.router,      prefix="/api/fire",      tags=["fire"])
app.include_router(cooling.router,   prefix="/api/cooling",   tags=["cooling"])
app.include_router(leak.router,      prefix="/api/leak",      tags=["leak"])
app.include_router(network.router,      prefix="/api/network",      tags=["network"])
app.include_router(maintenance.router,   prefix="/api/maintenance",   tags=["maintenance"])
app.include_router(floor_layout.router,  prefix="/api/floor-layout",  tags=["floor-layout"])
app.include_router(scenarios.router,      prefix="/api/scenarios",       tags=["scenarios"])
app.include_router(settings_router.router, prefix="/api/settings",      tags=["settings"])