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

from apscheduler.schedulers.asyncio import AsyncIOScheduler

from app.database import engine
from app.routers import auth, todos, events, calendars, reminders, projects, people, locations, settings as settings_router, dashboard, weather, event_templates
from app.jobs.notifications import run_notification_dispatch

# Import models so Alembic's autogenerate can discover them
from app.models import user as _user_model  # noqa: F401
from app.models import session as _session_model  # noqa: F401


@asynccontextmanager
async def lifespan(app: FastAPI):
    scheduler = AsyncIOScheduler()
    scheduler.add_job(
        run_notification_dispatch,
        "interval",
        minutes=1,
        id="ntfy_dispatch",
        max_instances=1,  # prevent overlap if a run takes longer than 60s
    )
    scheduler.start()
    yield
    scheduler.shutdown(wait=False)
    await engine.dispose()


app = FastAPI(
    title="UMBRA API",
    description="Backend API for UMBRA application",
    version="1.0.0",
    lifespan=lifespan
)

# CORS configuration for development
app.add_middleware(
    CORSMiddleware,
    allow_origins=["http://localhost:5173"],
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

# Include routers with /api prefix
app.include_router(auth.router, prefix="/api/auth", tags=["Authentication"])
app.include_router(todos.router, prefix="/api/todos", tags=["Todos"])
app.include_router(events.router, prefix="/api/events", tags=["Calendar Events"])
app.include_router(calendars.router, prefix="/api/calendars", tags=["Calendars"])
app.include_router(reminders.router, prefix="/api/reminders", tags=["Reminders"])
app.include_router(projects.router, prefix="/api/projects", tags=["Projects"])
app.include_router(people.router, prefix="/api/people", tags=["People"])
app.include_router(locations.router, prefix="/api/locations", tags=["Locations"])
app.include_router(settings_router.router, prefix="/api/settings", tags=["Settings"])
app.include_router(dashboard.router, prefix="/api", tags=["Dashboard"])
app.include_router(weather.router, prefix="/api/weather", tags=["Weather"])
app.include_router(event_templates.router, prefix="/api/event-templates", tags=["Event Templates"])


@app.get("/")
async def root():
    return {"message": "UMBRA API is running"}


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